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File SetLastWriteTime

using System; using System.IO; class Test  {     public static void Main()      {             string path = @"c:\Temp\MyTest.txt";             if (!File.Exists(path))              {                 File.Create(path);             }              else              {                 File.SetLastWriteTime(path, new DateTime(2010,4,3));             }             DateTime dt = File.GetLastWriteTime(path);             Console.WriteLine("The last write time for this file was {0}.", dt);                    File.SetLastWriteTime(path, DateTime.Now);             dt = File.GetLastWriteTime(path);             Console.WriteLine("The last write time for this file was {0}.", dt);     } }