string DesignationPath = @"C:\\Documents and Settings\\Narayanan\\My Documents\\Others\\Txt)";
string[] Dir;
Dir = Directory.GetFiles(C:\\Documents and Settings\\Narayanan\\My Documents\\Others\\Txt);
foreach (string str in Dir)
{
string[] GFiles = str.Split('\\');
string ExportPath =@"E:\" + "\\" + GFiles[6];
File.Copy(DesignationPath + "\\" + GFiles[6], ExportPath, true);
}