Question

How to replace the contents of one file with another in C#

Answer 1

using System;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                File.WriteAllText("d:\\data1.txt", "data111");
                File.WriteAllText("d:\\data2.txt", "data222");

                File.Replace("d:\\data1.txt", "d:\\data2.txt", "d:\\backup.txt");

                Console.WriteLine("Replace successes");
                
            }
            catch (IOException ioex)
            {
                Console.WriteLine(ioex.Message);
            }
        }
    }
}

/*
run:
   
data1
-----
removed

data2
-----
data111
 
backup.txt
----------
data222

*/

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