CODEWITHSUNDEEP
c#textboxconsole
vanna
vanna

Reputation: 1572

How to redirect a verbose console to TextBox in C# without slowing down the application

I am redirecting my console to a TextBox using the following setup :

public partial class WindowMain : Window
{
    public WindowMain()
    {
        InitializeComponent(); 
        TextWriter writer = new TextBoxStreamWriter(consoleTextBox);
        Console.SetOut(writer);
    }
}

with class TextBoxStreamWriter :

public class TextBoxStreamWriter : TextWriter
{
    TextBox _output = null;

    public TextBoxStreamWriter(TextBox output)
    {
        _output = output;
    }

    public override void Write(char value)
    {
        base.Write(value);
        _output.Dispatcher.Invoke(new Action(() =>
        {
            _output.AppendText(value.ToString());
        })
        );
    }
}

This is working. When I call Console.Write in my application my TextBox is appended correctly. The problem is I am feeding the console with very large data continuously (output of a very verbose batch launched via a Process calling cmd.exe)

process.OutputDataReceived += (s, e) =>
{
    if (e.Data != null)
    {
        Console.WriteLine(e.Data);
    }
};

The issue here is that this is slowing down the whole application (particularly threads that I launch during the feeding). My idea is to manually control the frequency of writing. However I feel this is a common issue and I don't want to reinvent the wheel. Any suggestions ?

Upvotes: 3

Views: 675

Answers (1)

vanna
vanna

Reputation: 1572

I ended up not using the console anymore. My application has no need for a console indeed.

process.OutputDataReceived += (s, e) =>
{
    if (e.Data != null)
    {
        consoleTextBox.AppendText(e.Data);
    }
};

My solution was more complex than the piece of code above since I use threads (which is what confused my in the first place, making me think using the console was smart).

Upvotes: 1

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