how to save exception in txt file?

Question

public DataTable InsertItemDetails(FeedRetailPL objFeedRetPL)
{
    DataTable GetListID = new DataTable();
    try
    {
        SqlParameter[] arParams = new SqlParamet         


        

Answer 1

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.IO;
    namespace ErrorLoggingSample
    {
     class Program
      {
      static void Main(string[] args)
      {
        try
        {
            string str = string.Empty;
            if (string.IsNullOrEmpty(str))
            {
                throw new Exception("Wrong Data");
            }
        }
        catch (Exception ex)
        {
            ErrorLogging(ex);
            ReadError();
        }

    }

    public static void ErrorLogging(Exception ex)
    {
        string strPath = @"D:\Rekha\Log.txt";
        if (!File.Exists(strPath))
        {
            File.Create(strPath).Dispose();
        }
        using (StreamWriter sw = File.AppendText(strPath))
        {
            sw.WriteLine("=============Error Logging ===========");
            sw.WriteLine("===========Start============= " +       DateTime.Now);
            sw.WriteLine("Error Message: " + ex.Message);
            sw.WriteLine("Stack Trace: " + ex.StackTrace);
            sw.WriteLine("===========End============= " + DateTime.Now);

        }
    }

    public static void ReadError()
    {
        string strPath = @"D:\Rekha\Log.txt";
        using (StreamReader sr = new StreamReader(strPath))
        {
            string line;
            while ((line = sr.ReadLine()) != null)
            {
                Console.WriteLine(line);
            }
        }
      }
   }
  }