problem in using CMD and CommandLineTools in c# code (try to use bluetooth)

hello.
I'm programming a project that sent a file from computer to phone.
I use BluetoothCLTools-1.2.0.51 programs to discovery and send my files.
There is my code:

Process p = new Process();
                ProcessStartInfo psi = new ProcessStartInfo("cmd","/c"+@"btobex -n"MyPhone" "C:\A.txt"");

                p.StartInfo = psi;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = false;
                p.StartInfo.ErrorDialog = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.CreateNoWindow = true;
                p.StartInfo.UseShellExecute = false;

                p.Start();

There is no problem when i use Command prom directly, but when start command prom by my code and sending file to phone if i select NO when my phone ask permission to receive file, the program has a error like this:

Problem Event Name=APPCRASH

there is no error when i use

Run->CMD

Tags: C#