Question

If I have a GUI like this:

---------------------

[Button]

---------------------
[RichTextbox_output]

---------------------

Would it be possible to show all:

stdout and stderr in the richTextbox that I can see from ‘output’ diaglog of visual studio?

Thanks in advance.

Answer 1

Stdout in C# is called Console.Out. Stderr is called Console.Error.

To solve this you will need to redirect Console.Out. This can be done using Console.SetOut. This will then need to be redirected to a custom stringwriter of your own that will write to the rich text box. This isn’t built into the textbox and you will need to create a stream implementation of your own. One possible solution is to subclass StringWriter and overload the WriteLine method to push to your textbox instead.

public class TextBoxWriter : StringWriter
{
   public override void WriteLine(string x)
   {
       // Write to textbox here
   }
}

Obviously, if you use more than just WriteLine you’ll have to create overloads for those methods as well.

The same approach can be taken with Console.SetError for the stderr stream.