ExportDataToFile/Utility/Utility.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace ManagementSystem.Utility
{
    class Utility
    {
        #region 其它共用程式

        public static bool IsNumber(string strSource)
        {
            float output;
            return float.TryParse(strSource, out output);
        }  //確認是否為數字

        public static bool IsDate(string strSource)
        {
            try
            {                
                DateTime dtOutput;
                if (DateTime.TryParse(strSource, out dtOutput))
                {
                    return true;
                }
                else
                {
                    return false;
                }

            }
            catch (Exception ex)
            {
                return false;
            }
        }  //確是否為日期

        public static string MarkNumber(double dbNumber, int intPoint)   //將資料加上三位一撇
        {
            return string.Format("{0:N" + intPoint + "}", dbNumber);
        }

        public static string MarkNumber(int intNumber, int intPoint)   //將資料加上三位一撇
        {
            return string.Format("{0:N" + intPoint + "}", intNumber);
        }

        public static string MarkNumber(string strNumber, int intPoint)  //將資料加上三位一撇
        {
            if (strNumber.IndexOf("%") != -1)
            {
                return strNumber;
            }

            if (!string.IsNullOrEmpty(strNumber))
            {
                if (IsNumber(strNumber))
                {
                    return MarkNumber(Convert.ToDouble(strNumber), intPoint);
                }
            }

            return "";
        }

        public static string MarkNumber(double dbNumber)   //將資料加上三位一撇
        {
            return string.Format("{0:N0}", dbNumber);
        }

        public static string MarkNumber(int intNumber)   //將資料加上三位一撇
        {
            return string.Format("{0:N0}", intNumber);
        }

        public static string MarkNumber(string strNumber)  //將資料加上三位一撇
        {
            if (!string.IsNullOrEmpty(strNumber))
            {
                if (strNumber.IndexOf("%") != -1)
                {
                    return strNumber;
                }

                if (IsNumber(strNumber))
                {
                    return MarkNumber(Math.Round(Convert.ToDouble(strNumber)));
                }
            }

            return "";
        }

        public static void CreateDir(string strDirPath)   //建立資料夾
        {
            string[] strDir = strDirPath.Split('\\');
            string strCreatePath = "";
            foreach (string strPath in strDir)
            {
                if (strPath != "")
                {
                    strCreatePath += strPath + "\\";
                    if (!Directory.Exists(strCreatePath))
                    {
                        Directory.CreateDirectory(strCreatePath);
                    }
                }
            }
        }

        public static void WriteFile(string strFilePath, string strContent)  //撰寫檔案文字內容
        {
            using (StreamWriter swFile = new StreamWriter(strFilePath, true))
            {
                swFile.WriteLine(strContent);
            }
        }

        public static void WriteFile(string strFilePath, string[] strContent)  //撰寫檔案文字內容
        {
            //判斷檔案是否存在
            string[] strPathArray = strFilePath.Split('\\');
            string strCHKPath = "";

            for (int intPath = 0; intPath < strPathArray.Length - 1; intPath++)
            {
                strCHKPath += strPathArray[intPath] + "\\";
            }

            //檢查資料夾是否存在
            if (!File.Exists(strCHKPath))
            {
                CreateDir(strCHKPath);
            }

            using (StreamWriter swFile = new StreamWriter(strFilePath, true))
            {
                foreach (string strContentText in strContent)
                {
                    swFile.WriteLine(strContentText);
                }
            }
        }

        #endregion
    }
}