ExportDataToFile/Utility/MSSQLUtilityClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Configuration;
using Npgsql;


namespace ManagementSystem.Utility
{
    public static class MSSQLUtility
    {
                
        #region 取得指定Table資料
        public static DataSet GetTable(string strTableName, string[] strColumnList , string strWhere, string strOrderBy)
        {
            DataSet dsData = new DataSet();
            try
            {
                string strColumns = "";
                foreach (string strColumn in strColumnList) //取得欄位陣列
                {
                    if (strColumns != "")
                    {
                        strColumns += "," + strColumn.Trim();
                    }
                    else
                    {
                        strColumns = strColumn;
                    }
                }
                string strCommand = string.Format("Select {0} From {1} ",strColumns, strTableName);

                if (strWhere != "") //設定過濾條件
                {
                    strCommand += " Where " + strWhere;
                }

                if (strOrderBy != "")  //取得排序欄位
                {
                    strCommand += " Order By " + strOrderBy;
                }

                //using (SqlConnection sqlConn = GetConn(MainForm.strAccountingBookID))
                //{
                //    using (SqlDataAdapter sqlAdapter = new SqlDataAdapter(strCommand, sqlConn))
                //    {
                //        if (sqlConn.State == ConnectionState.Closed)  //判斷連線狀態
                //        {
                //            sqlConn.Open();
                //        }
                //        sqlAdapter.Fill(dsData, "Result");
                //    }
                //}
                return dsData;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static DataSet GetTable(string strTableName, string[] strColumnList, string strWhere)
        {
            return GetTable(strTableName, strColumnList, strWhere, "");
        }

        public static DataSet GetTable(string strTableName, string[] strColumnList)
        {
            return GetTable(strTableName, strColumnList,"","");
        }

        public static DataSet GetTable(string strTableName)
        {
            return GetTable(strTableName,new string[] {"*"}, "", "");
        }


        #endregion

        #region MS-SQL命令相關程式集
        public static SqlConnection GetConn(string strIP, string strDBName, string strID, string strPWD)
        {
            string strConnectionString = "server="+ strIP +";database=" + strDBName + ";uid=" + strID + ";pwd=" + strPWD;
            SqlConnection sqlConn = new SqlConnection(strConnectionString);
            sqlConn.ConnectionString = strConnectionString;            
            return sqlConn;
        }        

        public static DataSet GetSQLResult(string strSQL, SqlConnection sqlConn)
        {
            DataSet dsData = new DataSet();
            try
            {                
                
                using (SqlDataAdapter sqlAdapter = new SqlDataAdapter(strSQL, sqlConn))
                {
                    if (sqlConn.State == ConnectionState.Closed)  //判斷連線狀態
                    {
                        sqlConn.Open();
                    }
                    sqlAdapter.Fill(dsData, "Result");
                }
                
                return dsData;
            }
            catch(Exception ex)
            {
                throw ex; 
            }
        }

        public static bool IsExist(string strSQL, SqlConnection sqlConn)
        {
            try
            {
                DataSet sdResult = GetSQLResult(strSQL, sqlConn);
                DataTable dtResult = sdResult.Tables[0];
                if (dtResult.Rows.Count > 0)
                { return true; }
                else
                { return false; }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public static bool RunSQLNonReturn(string strSQL, SqlConnection sqlConn)
        {
            try
            {
                SqlCommand sqlCmd = new SqlCommand(strSQL, sqlConn);
                if (sqlConn.State == ConnectionState.Closed)  //判斷連線狀態
                {
                    sqlConn.Open();
                }
                sqlCmd.ExecuteNonQuery();
                return true;
            }
            catch (Exception ex)
            {
                return false;
            }
        }

        public static string GetSQLCount(string strSQL, SqlConnection sqlConn)
        {
            string strCount = "";
            DataSet dsTemp = GetSQLResult(strSQL, sqlConn);
            strCount = dsTemp.Tables[0].Rows.Count.ToString();

            //回傳查詢結果
            if(strCount == "")
                { return "0"; }
            else
                { return strCount; }
        }
        #endregion

        
          
    }
}