CODEWITHSUNDEEP
c#winforms
raindrop_boy
raindrop_boy

Reputation: 63

show console window from WinForms program

I have a WinForms program. If a user starts it from the command line and passes an invalid parameter, how could I display error information in the console window?

Upvotes: 1

Views: 865

Answers (3)

Gayot Fow
Gayot Fow

Reputation: 8792

Your WinForms app could raise a pop up, like a message box, that shows the error.

If the application is running in unattended mode as part of a batch file, you could write to the Event Log, or to a custom log file created by the application.

The other answers that tell you to use Console.WriteLine are also great if your batch command redirects output to a file, such as...

myApp.exe >> errors.txt

this appends the console to the error.txt file...

Upvotes: 0

Renatas M.
Renatas M.

Reputation: 11820

Here is example how to display message to command line if bad parameter is passed to winform application:

static class Program
{
    [DllImport("kernel32.dll")]
    static extern bool AttachConsole(int dwProcessId);
    private const int ATTACH_PARENT_PROCESS = -1;

    [STAThread]
    static void Main(string[] args)
    {

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        //if parameter -window is passed - opens main form, else displays Bad params message
        if(args[0] == "-window")
            Application.Run(new main());
        else
        {
            //Attach console process
            AttachConsole(ATTACH_PARENT_PROCESS);
            Console.WriteLine("Bad params");
        }
    }
}

Reference: http://www.csharp411.com/console-output-from-winforms-application/

Upvotes: 4

Damyan Bogoev
Damyan Bogoev

Reputation: 696

You could output the information using the Console.WriteLine(message) method.

Upvotes: 1

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