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906 lines
35 KiB
906 lines
35 KiB
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.SqlClient;
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namespace EasyNet.DBUtility
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{
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public abstract class DbHelperSQL
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{
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//資料庫連接字符串(web.config來配置)，可以動態改變connectionString支持多資料庫.
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private static string _connectionString = AdoHelper.ConnectionString;
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protected DbHelperSQL()
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{
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}
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#region 公用方法
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/// <summary>
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/// 判斷是否存在某表的某個欄位
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/// </summary>
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/// <param name="tableName">表名稱</param>
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/// <param name="columnName">欄位名稱</param>
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/// <returns>是否存在</returns>
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public static bool ColumnExists(string tableName, string columnName)
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{
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var sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
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var res = GetSingle(sql);
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if (res == null)
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{
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return false;
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}
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return Convert.ToInt32(res) > 0;
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}
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public static int GetMaxID(string FieldName, string TableName)
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{
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var strsql = "select max(" + FieldName + ")+1 from " + TableName;
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var obj = DbHelperSQL.GetSingle(strsql);
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return obj == null ? 1 : int.Parse(obj.ToString());
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}
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public static bool Exists(string strSql)
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{
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var obj = DbHelperSQL.GetSingle(strSql);
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int cmdresult;
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cmdresult = (Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)) ? 0 : int.Parse(obj.ToString());
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return cmdresult == 0 ? false : true;
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}
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/// <summary>
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/// 表是否存在
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/// </summary>
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/// <param name="TableName"></param>
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/// <returns></returns>
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public static bool TabExists(string TableName)
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{
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var strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
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//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
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var obj = DbHelperSQL.GetSingle(strsql);
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int cmdresult;
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cmdresult = (Object.Equals(obj, null)) || (Object.Equals(obj, DBNull.Value)) ? 0 : int.Parse(obj.ToString());
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return cmdresult == 0 ? false : true;
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}
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public static bool Exists(string strSql, params SqlParameter[] cmdParms)
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{
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var obj = DbHelperSQL.GetSingle(strSql, cmdParms);
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int cmdresult;
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cmdresult = (Object.Equals(obj, null)) || (Object.Equals(obj, DBNull.Value)) ? 0 : int.Parse(obj.ToString());
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return cmdresult == 0 ? false : true;
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}
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#endregion 公用方法
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#region 執行簡單SQL語句
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/// <summary>
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/// 執行SQL語句，返回影響的資料數
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/// </summary>
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/// <param name="SQLString">SQL語句</param>
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/// <returns>影響的資料數</returns>
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public static int ExecuteSql(string SQLString)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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using (SqlCommand cmd = new SqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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var rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (SqlException e)
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{
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connection.Close();
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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}
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public static int ExecuteSqlByTime(string SQLString, int Times)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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using (SqlCommand cmd = new SqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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cmd.CommandTimeout = Times;
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var rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (SqlException e)
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{
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connection.Close();
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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}
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/// <summary>
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/// 執行多条SQL語句，實現資料庫事務。
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/// </summary>
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/// <param name="SQLStringList">多条SQL語句</param>
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public static int ExecuteSqlTran(List<String> SQLStringList)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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connection.Open();
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var cmd = new SqlCommand
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{
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Connection = connection
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};
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var tx = connection.BeginTransaction();
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cmd.Transaction = tx;
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try
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{
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var count = 0;
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foreach (var strsql in SQLStringList)
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{
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if (strsql.Trim().Length > 1)
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{
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cmd.CommandText = strsql;
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count += cmd.ExecuteNonQuery();
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}
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}
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tx.Commit();
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return count;
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}
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catch (Exception)
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{
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tx.Rollback();
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return 0;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 執行带一個存储過程参數的的SQL語句。
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/// </summary>
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/// <param name="SQLString">SQL語句</param>
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/// <param name="content">参數内容,比如一個欄位是格式複雜的文章，有特殊符號，可以通過這個方式添加</param>
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/// <returns>影響的資料數</returns>
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public static int ExecuteSql(string SQLString, string content)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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var cmd = new SqlCommand(SQLString, connection);
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var myParameter = new SqlParameter("@content", SqlDbType.NText)
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{
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Value = content
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};
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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var rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (SqlException e)
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{
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 執行带一個存储過程参數的的SQL語句。
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/// </summary>
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/// <param name="SQLString">SQL語句</param>
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/// <param name="content">参數内容,比如一個欄位是格式複雜的文章，有特殊符號，可以通過這個方式添加</param>
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/// <returns>影響的資料數</returns>
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public static object ExecuteSqlGet(string SQLString, string content)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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var cmd = new SqlCommand(SQLString, connection);
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var myParameter = new SqlParameter("@content", SqlDbType.NText)
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{
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Value = content
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};
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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var obj = cmd.ExecuteScalar();
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return (Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)) ? null : obj;
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}
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catch (SqlException e)
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{
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 向資料庫里插入圖像格式的欄位(和上面情況類似的另一種實例)
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/// </summary>
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/// <param name="strSQL">SQL語句</param>
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/// <param name="fs">圖像字節,資料庫的欄位類型为image的情況</param>
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/// <returns>影響的資料數</returns>
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public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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var cmd = new SqlCommand(strSQL, connection);
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var myParameter = new SqlParameter("@fs", SqlDbType.Image)
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{
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Value = fs
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};
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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var rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (SqlException e)
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{
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 執行一条计算查詢結果語句，返回查詢結果{Object}。
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/// </summary>
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/// <param name="SQLString">计算查詢結果語句</param>
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/// <returns>查詢結果{Object}</returns>
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public static object GetSingle(string SQLString)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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using (SqlCommand cmd = new SqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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var obj = cmd.ExecuteScalar();
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return (Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)) ? null : obj;
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}
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catch (SqlException e)
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{
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connection.Close();
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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}
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public static object GetSingle(string SQLString, int Times)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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using (SqlCommand cmd = new SqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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cmd.CommandTimeout = Times;
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var obj = cmd.ExecuteScalar();
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return (Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)) ? null : obj;
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}
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catch (SqlException e)
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{
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connection.Close();
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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}
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/// <summary>
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/// 執行查詢語句，返回SqlDataReader ( 注意：調用該方法後，一定要對SqlDataReader進行Close )
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/// </summary>
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/// <param name="strSQL">查詢語句</param>
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/// <returns>SqlDataReader</returns>
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public static SqlDataReader ExecuteReader(string strSQL)
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{
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var connection = new SqlConnection(_connectionString);
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using (var cmd = new SqlCommand(strSQL, connection))
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{
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try
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{
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connection.Open();
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var myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
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return myReader;
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}
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catch (SqlException e)
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{
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throw new Exception("some reason to rethrow", e);
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}
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}
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}
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/// <summary>
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/// 執行查詢語句，返回DataSet
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/// </summary>
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/// <param name="SQLString">查詢語句</param>
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/// <returns>DataSet</returns>
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public static DataSet Query(string SQLString)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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var ds = new DataSet();
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try
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{
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connection.Open();
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using (var command = new SqlDataAdapter(SQLString, connection))
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{
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command.Fill(ds, nameof(ds));
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}
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}
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catch (SqlException ex)
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{
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throw new Exception(ex.Message);
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}
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finally
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{
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connection.Close();
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}
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return ds;
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}
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}
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public static DataSet Query(string SQLString, int Times)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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var ds = new DataSet();
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try
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{
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connection.Open();
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using (var command = new SqlDataAdapter(SQLString, connection))
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{
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command.SelectCommand.CommandTimeout = Times;
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command.Fill(ds, nameof(ds));
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}
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}
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catch (SqlException ex)
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{
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throw new Exception(ex.Message);
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}
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finally
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{
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connection.Close();
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}
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return ds;
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}
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}
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#endregion 執行簡單SQL語句
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#region 執行带参數的SQL語句
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/// <summary>
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/// 執行SQL語句，返回影響的資料數
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/// </summary>
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/// <param name="SQLString">SQL語句</param>
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/// <param name="cmdParms">todo: describe cmdParms parameter on ExecuteSql</param>
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/// <returns>影響的資料數</returns>
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public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
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{
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using (SqlConnection connection = new SqlConnection(_connectionString))
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{
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using (SqlCommand cmd = new SqlCommand())
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{
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try
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{
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PrepareCommand(cmd, connection, null, SQLString, cmdParms);
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var rows = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return rows;
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}
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catch (SqlException e)
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{
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throw new Exception("some reason to rethrow", e);
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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}
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/// <summary>
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/// 執行多条SQL語句，實現資料庫事務。
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/// </summary>
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/// <param name="SQLStringList">SQL語句的哈希表（key为sql語句，value是該語句的SqlParameter[]）</param>
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public static void ExecuteSqlTran(Hashtable SQLStringList)
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{
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using (SqlConnection conn = new SqlConnection(_connectionString))
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{
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conn.Open();
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using (SqlTransaction trans = conn.BeginTransaction())
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{
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var cmd = new SqlCommand();
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try
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{
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//循環
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foreach (DictionaryEntry myDE in SQLStringList)
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{
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var cmdText = myDE.Key.ToString();
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var cmdParms = (SqlParameter[])myDE.Value;
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PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
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var val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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}
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trans.Commit();
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}
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catch
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{
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trans.Rollback();
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throw;
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}
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}
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}
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}
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/// <summary>
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/// 執行多条SQL語句，實現資料庫事務。
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/// </summary>
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/// <param name="cmdList">todo: describe cmdList parameter on ExecuteSqlTran</param>
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public static int ExecuteSqlTran(List<CommandInfo> cmdList)
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{
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using (SqlConnection conn = new SqlConnection(_connectionString))
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{
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conn.Open();
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using (SqlTransaction trans = conn.BeginTransaction())
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{
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var cmd = new SqlCommand();
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try
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{
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var count = 0;
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//循環
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foreach (CommandInfo myDE in cmdList)
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{
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var cmdText = myDE.CommandText;
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var cmdParms = (SqlParameter[])myDE.Parameters;
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PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
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if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
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{
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if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
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{
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trans.Rollback();
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return 0;
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}
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var obj = cmd.ExecuteScalar();
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var isHave = false;
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if (obj == null && obj == DBNull.Value)
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{
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isHave = false;
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}
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isHave = Convert.ToInt32(obj) > 0;
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if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
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{
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trans.Rollback();
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return 0;
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}
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if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
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{
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trans.Rollback();
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return 0;
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}
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continue;
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}
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var val = cmd.ExecuteNonQuery();
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count += val;
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if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
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{
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trans.Rollback();
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return 0;
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}
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cmd.Parameters.Clear();
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}
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trans.Commit();
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return count;
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}
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catch
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{
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trans.Rollback();
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throw;
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}
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}
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}
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}
|
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|
|
/// <summary>
|
|
/// 執行多条SQL語句，實現資料庫事務。
|
|
/// </summary>
|
|
/// <param name="SQLStringList">SQL語句的哈希表（key为sql語句，value是該語句的SqlParameter[]）</param>
|
|
public static void ExecuteSqlTranWithIndentity(List<CommandInfo> SQLStringList)
|
|
{
|
|
using (SqlConnection conn = new SqlConnection(_connectionString))
|
|
{
|
|
conn.Open();
|
|
using (SqlTransaction trans = conn.BeginTransaction())
|
|
{
|
|
var cmd = new SqlCommand();
|
|
try
|
|
{
|
|
var indentity = 0;
|
|
//循環
|
|
foreach (CommandInfo myDE in SQLStringList)
|
|
{
|
|
var cmdText = myDE.CommandText;
|
|
var cmdParms = (SqlParameter[])myDE.Parameters;
|
|
foreach (SqlParameter q in cmdParms)
|
|
{
|
|
if (q.Direction == ParameterDirection.InputOutput)
|
|
{
|
|
q.Value = indentity;
|
|
}
|
|
}
|
|
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
|
var val = cmd.ExecuteNonQuery();
|
|
foreach (SqlParameter q in cmdParms)
|
|
{
|
|
if (q.Direction == ParameterDirection.Output)
|
|
{
|
|
indentity = Convert.ToInt32(q.Value);
|
|
}
|
|
}
|
|
cmd.Parameters.Clear();
|
|
}
|
|
trans.Commit();
|
|
}
|
|
catch
|
|
{
|
|
trans.Rollback();
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行多条SQL語句，實現資料庫事務。
|
|
/// </summary>
|
|
/// <param name="SQLStringList">SQL語句的哈希表（key为sql語句，value是該語句的SqlParameter[]）</param>
|
|
public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
|
|
{
|
|
using (SqlConnection conn = new SqlConnection(_connectionString))
|
|
{
|
|
conn.Open();
|
|
using (SqlTransaction trans = conn.BeginTransaction())
|
|
{
|
|
var cmd = new SqlCommand();
|
|
try
|
|
{
|
|
var indentity = 0;
|
|
//循環
|
|
foreach (DictionaryEntry myDE in SQLStringList)
|
|
{
|
|
var cmdText = myDE.Key.ToString();
|
|
var cmdParms = (SqlParameter[])myDE.Value;
|
|
foreach (SqlParameter q in cmdParms)
|
|
{
|
|
if (q.Direction == ParameterDirection.InputOutput)
|
|
{
|
|
q.Value = indentity;
|
|
}
|
|
}
|
|
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
|
var val = cmd.ExecuteNonQuery();
|
|
foreach (SqlParameter q in cmdParms)
|
|
{
|
|
if (q.Direction == ParameterDirection.Output)
|
|
{
|
|
indentity = Convert.ToInt32(q.Value);
|
|
}
|
|
}
|
|
cmd.Parameters.Clear();
|
|
}
|
|
trans.Commit();
|
|
}
|
|
catch
|
|
{
|
|
trans.Rollback();
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行一条计算查詢結果語句，返回查詢結果{Object}。
|
|
/// </summary>
|
|
/// <param name="SQLString">计算查詢結果語句</param>
|
|
/// <param name="cmdParms">todo: describe cmdParms parameter on GetSingle</param>
|
|
/// <returns>查詢結果{Object}</returns>
|
|
public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
|
|
{
|
|
using (SqlConnection connection = new SqlConnection(_connectionString))
|
|
{
|
|
using (SqlCommand cmd = new SqlCommand())
|
|
{
|
|
try
|
|
{
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
var obj = cmd.ExecuteScalar();
|
|
cmd.Parameters.Clear();
|
|
return (Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)) ? null : obj;
|
|
}
|
|
catch (SqlException e)
|
|
{
|
|
throw new Exception("some reason to rethrow", e);
|
|
}
|
|
finally
|
|
{
|
|
cmd.Dispose();
|
|
connection.Close();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行查詢語句，返回SqlDataReader ( 注意：調用該方法後，一定要對SqlDataReader進行Close )
|
|
/// </summary>
|
|
/// <param name="SQLString">todo: describe SQLString parameter on ExecuteReader</param>
|
|
/// <param name="cmdParms">todo: describe cmdParms parameter on ExecuteReader</param>
|
|
/// <returns>SqlDataReader</returns>
|
|
public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
|
|
{
|
|
var connection = new SqlConnection(_connectionString);
|
|
var cmd = new SqlCommand();
|
|
try
|
|
{
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
var myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
|
|
cmd.Parameters.Clear();
|
|
return myReader;
|
|
}
|
|
catch (SqlException e)
|
|
{
|
|
throw new Exception("some reason to rethrow", e);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行查詢語句，返回DataSet
|
|
/// </summary>
|
|
/// <param name="SQLString">查詢語句</param>
|
|
/// <param name="cmdParms">todo: describe cmdParms parameter on Query</param>
|
|
/// <returns>DataSet</returns>
|
|
public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
|
|
{
|
|
using (SqlConnection connection = new SqlConnection(_connectionString))
|
|
{
|
|
var cmd = new SqlCommand();
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
|
|
{
|
|
var ds = new DataSet();
|
|
try
|
|
{
|
|
da.Fill(ds, nameof(ds));
|
|
cmd.Parameters.Clear();
|
|
}
|
|
catch (SqlException ex)
|
|
{
|
|
throw new Exception(ex.Message);
|
|
}
|
|
finally
|
|
{
|
|
cmd.Dispose();
|
|
connection.Close();
|
|
}
|
|
return ds;
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
|
|
{
|
|
if (conn.State != ConnectionState.Open)
|
|
conn.Open();
|
|
cmd.Connection = conn;
|
|
cmd.CommandText = cmdText;
|
|
if (trans != null)
|
|
cmd.Transaction = trans;
|
|
if (cmdText.StartsWith("OSP_"))
|
|
cmd.CommandType = CommandType.StoredProcedure;//cmdType;
|
|
else
|
|
cmd.CommandType = CommandType.Text;//cmdType;
|
|
if (cmdParms != null)
|
|
{
|
|
foreach (SqlParameter parameter in cmdParms)
|
|
{
|
|
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
|
|
(parameter.Value == null))
|
|
{
|
|
parameter.Value = DBNull.Value;
|
|
}
|
|
cmd.Parameters.Add(parameter);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion 執行带参數的SQL語句
|
|
|
|
#region 存储過程操作
|
|
|
|
/// <summary>
|
|
/// 執行存储過程，返回SqlDataReader ( 注意：調用該方法後，一定要對SqlDataReader進行Close )
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储過程名</param>
|
|
/// <param name="parameters">存储過程参數</param>
|
|
/// <returns>SqlDataReader</returns>
|
|
public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
|
|
{
|
|
var connection = new SqlConnection(_connectionString);
|
|
SqlDataReader returnReader;
|
|
connection.Open();
|
|
var command = BuildQueryCommand(connection, storedProcName, parameters);
|
|
command.CommandType = CommandType.StoredProcedure;
|
|
returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
|
|
return returnReader;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行存储過程
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储過程名</param>
|
|
/// <param name="parameters">存储過程参數</param>
|
|
/// <param name="tableName">DataSet結果中的表名</param>
|
|
/// <returns>DataSet</returns>
|
|
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
|
|
{
|
|
using (SqlConnection connection = new SqlConnection(_connectionString))
|
|
{
|
|
var dataSet = new DataSet();
|
|
connection.Open();
|
|
using (var sqlDA = new SqlDataAdapter
|
|
{
|
|
SelectCommand = BuildQueryCommand(connection, storedProcName, parameters)
|
|
})
|
|
{
|
|
sqlDA.Fill(dataSet, tableName);
|
|
connection.Close();
|
|
return dataSet;
|
|
}
|
|
}
|
|
}
|
|
|
|
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
|
|
{
|
|
using (SqlConnection connection = new SqlConnection(_connectionString))
|
|
{
|
|
var dataSet = new DataSet();
|
|
connection.Open();
|
|
using (var sqlDA = new SqlDataAdapter
|
|
{
|
|
SelectCommand = BuildQueryCommand(connection, storedProcName, parameters)
|
|
})
|
|
{
|
|
sqlDA.SelectCommand.CommandTimeout = Times;
|
|
sqlDA.Fill(dataSet, tableName);
|
|
connection.Close();
|
|
return dataSet;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 构建 SqlCommand 對象(用來返回一個結果集，而不是一個整數值)
|
|
/// </summary>
|
|
/// <param name="connection">資料庫連接</param>
|
|
/// <param name="storedProcName">存储過程名</param>
|
|
/// <param name="parameters">存储過程参數</param>
|
|
/// <returns>SqlCommand</returns>
|
|
private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
|
{
|
|
var command = new SqlCommand(storedProcName, connection)
|
|
{
|
|
CommandType = CommandType.StoredProcedure
|
|
};
|
|
foreach (SqlParameter parameter in parameters)
|
|
{
|
|
if (parameter != null)
|
|
{
|
|
// 檢查未分配值的輸出参數,将其分配以DBNull.Value.
|
|
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
|
|
(parameter.Value == null))
|
|
{
|
|
parameter.Value = DBNull.Value;
|
|
}
|
|
command.Parameters.Add(parameter);
|
|
}
|
|
}
|
|
|
|
return command;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 執行存储過程，返回影響的行數
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储過程名</param>
|
|
/// <param name="parameters">存储過程参數</param>
|
|
/// <param name="rowsAffected">影響的行數</param>
|
|
/// <returns></returns>
|
|
public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
|
|
{
|
|
using (SqlConnection connection = new SqlConnection(_connectionString))
|
|
{
|
|
int result;
|
|
connection.Open();
|
|
var command = BuildIntCommand(connection, storedProcName, parameters);
|
|
rowsAffected = command.ExecuteNonQuery();
|
|
result = (int)command.Parameters["ReturnValue"].Value;
|
|
//Connection.Close();
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// 創建 SqlCommand 對象實例(用來返回一個整數值)
|
|
/// </summary>
|
|
/// <param name="storedProcName">存储過程名</param>
|
|
/// <param name="parameters">存储過程参數</param>
|
|
/// <param name="connection">todo: describe connection parameter on BuildIntCommand</param>
|
|
/// <returns>SqlCommand 對象實例</returns>
|
|
private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
|
{
|
|
var command = BuildQueryCommand(connection, storedProcName, parameters);
|
|
command.Parameters.Add(new SqlParameter("ReturnValue",
|
|
SqlDbType.Int, 4, ParameterDirection.ReturnValue,
|
|
false, 0, 0, string.Empty, DataRowVersion.Default, null));
|
|
return command;
|
|
}
|
|
|
|
#endregion 存储過程操作
|
|
}
|
|
}
|