SVN update command not working in ASP.NET

Hi,

Subversion (SVN) command update or checkout is not working with me. Please look at following code, any suggestion here please…

  System.Diagnostics.Process myprocess = new System.Diagnostics.Process();

                myprocess.StartInfo.WorkingDirectory = @"c:\"; ;

                myprocess.StartInfo.UseShellExecute = false;

                myprocess.StartInfo.FileName = "cmd.exe";

                myprocess.StartInfo.Arguments = "svn update " + lStrDetinationPath;

                myprocess.StartInfo.CreateNoWindow = false;

                myprocess.StartInfo.RedirectStandardInput = true;

                myprocess.StartInfo.RedirectStandardOutput = true;

                myprocess.StartInfo.RedirectStandardError = true;

                myprocess.Start();

Any help plz..need solution asap

Thanks

Srenath