run exe in console

Question

I have an exe that works in command prompt and needs two parameters feeded and enter pushed (to get some calculation results). However I need this to be worked directly from my vb.net application, so that those two parameters are feeded automatically and the results read into vb.

I can make the external exe run with Shell-command and i can feed commands to cmd with SendKeys class so that the external exe makes its calculation properly. But the calculation results appear in the cmd prompt window and I can't make my software read them. Is there any simple solution to this?

Juha · Answer

Thanks for the reply you were on the right track. I already found a solution to this: Dim proc As New Process() Dim result As String =  Dim argString as String = Whatever Dim feed1 as String = 1st feed value Dim feed2 as String = 2nd feed value proc.StartInfo.FileName = myexe.exe proc.StartInfo.Arguments = argString proc.StartInfo.CreateNoWindow = True proc.StartInfo.RedirectStandardInput = True proc.StartInfo.RedirectStandardOutput = True proc.StartInfo.UseShellExecute = False proc.Start() proc.StandardInput.WriteLine(feed1 &   & feed2) proc.StandardInput.Close() result = proc.StandardOutput.ReadToEnd I just replaced arguments and those feeded values with proper values. Works perfectly. :)

Vulpes · Answer

I'd have thought that something like this should work: Dim arg1 As String = Whatever1 Dim arg2 As String = Whatever2 Dim proc As New System.Diagnostics.Process() proc.StartInfo.FileName = myexe.exe proc.StartInfo.Arguments = arg1 &   & arg2 proc.StartInfo.UseShellExecute = False proc.StartInfo.RedirectStandardOutput = True proc.Start() Dim result As String = proc.StandardOutput.ReadToEnd()) proc.WaitForExit()