C# process skips input

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C#

Linux

stream

process

Hey!
I have a problem with my C' Program.
My program is some kind of C Online Compiler. It reads a source file, compiles it and then runs the file and the user should be able to give the Program an input.

The compiling part works. But when I start the executable file through code it skips all the inputs the program asks for.

My Program runs on a Linux VM.

My code:

    private void StartProgramRun()
        {
            try
            {
                _currentProgram = new Process();
                _currentProgram.StartInfo.FileName = $"mypath";
                _currentProgram.StartInfo.RedirectStandardInput = true;
                _currentProgram.StartInfo.RedirectStandardOutput = true;
                _currentProgram.StartInfo.RedirectStandardError = true;
                _currentProgram.StartInfo.UseShellExecute = false;
                _currentProgram.EnableRaisingEvents = true;

                _currentProgram.Exited += CurrentProgram_Exited;
                _currentProgram.OutputDataReceived += CurrentProgram_OutputDataReceived;
                _currentProgram.ErrorDataReceived += CurrentProgram_OutputDataReceived;

                _currentProgram.Start();

                _currentProgram.BeginOutputReadLine();
                _currentProgram.BeginErrorReadLine();
            }
            catch (Exception ex)
            {
                _currentChannel.SendMessageAsync("Error on ProcessStart: " + ex.Message);
            }
        }

        private void CurrentProgram_OutputDataReceived(object sender, DataReceivedEventArgs e)
        {
            if (!string.IsNullOrEmpty(e.Data))
            {
                //displays the message to the user
            }
        }

private void CurrentProgram_Exited(object sender, EventArgs e)
        {
            //displays that the program exited and deletes the executable

            File.Delete($"mypath");
        }

_currentProgram is a global variable.
"mypath" is the path to the executable file.

What I have tried:

I tried to execute the file via '/bin/bash' and I tried to execute the executable itself.