C#打开文件夹并定位到指定的文件

   public void PositionFile(string sFileFullName)        {            if (!System.IO.File.Exists(sFileFullName)) return;            System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("Explorer.exe");            //string file = @"c:/windows/notepad.exe";            psi.Arguments = " /select," + sFileFullName;            System.Diagnostics.Process.Start(psi);        }