Unable to use Console.Log() within a WebBrowser Control

Question

So I\'m writing a Javascript coding UI using C# Windows Forms. This is my code for when the \"Run\" button is pressed, in case it helps:

Answer 1

Yes, Console class is not available in your browser control, but you can create a logger class like this

[ComVisible(true)]
public class Logger
{
    public void log(string s)
    {
        Console.WriteLine(s);
    }
}

and use it in your browser control

webBrowser1.ObjectForScripting = new Logger();
webBrowser1.DocumentText = "<script>external.log('TEST');</script>";

Answer 2

You can get JavaScript console output from within Visual Studio.

By default the webBrowser1 control uses IE7 to render it's output. IE7 does not have a console.log() function. In order to get the console.log() function to work, you need to add the following meta tag:

<meta http-equiv="X-UA-Compatible" content="IE=11">

'IE=8' or greater should make the console.log() available to you.

When you debug a Windows Forms application it debugs using the .NET Managed Code debugger. In order to debug differently, instead of pressing 'Play' to debug, try selecting "Debug" > "Start without Debugging". Now once your application is running, go to "Debug" > "Attach to Process" and find your WindowsFormsApplication.exe, attach to it using the Script Code Debugger instead of the .NET Managed Code debugger.

Now, in Visual Studio:

• You can open "Debug" > "Windows" > "JavaScript Console"
• You can also open "Debug" > "Windows" > "DOM Explorer"