C# - Main Method? - Xtreme Visual Basic Talk

05-10-2007, 06:54 AM

vbuser2006 vbuser2006 is offline

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C# - Main Method?

All the tutorials I read say a program must have a Main method. I have a program which doesn't, but it compiles OK and runs fine without it. What am I missing?

05-10-2007, 07:30 AM

Mike Rosenblum Mike Rosenblum is offline

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A class library would not have an entrypoint (although you can still create a startup object for a class library) but an application absolutely must have one. The code must begin executing somewhere.

If you go into the Solution Explorer, you should see a document there named 'Program.cs'. If you open that up you should see something like the following:

Code:

namespace csTester
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

This is sort of the "code behind", if you will, that makes your startup form load.

,
Mike

Last edited by Mike Rosenblum; 05-10-2007 at 10:32 AM.

05-10-2007, 07:34 AM

Shurik12

Steppe Walker

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Hi,

I'm curious. Can you show the code?

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05-10-2007, 07:36 AM

vbuser2006 vbuser2006 is offline

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Thanks. I don't know if I looked there? I looked through
'Form1.Designer.cs' and 'Form1.cs'.

So there must be a 'Program.cs' in the solution explorer as well? I will have a look tonight.

Thanks again.

I just started using C# yesterday. As if it wasn't obvious.

Last edited by vbuser2006; 05-10-2007 at 07:39 AM. Reason: P.S

05-10-2007, 10:30 AM

Mike Rosenblum Mike Rosenblum is offline

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Quote:

Originally Posted by vbuser2006

So there must be a 'Program.cs' in the solution explorer as well? I will have a look tonight.

Yep!

You won't find this in VB.NET windows application because VB.NET uses a 'Startup Form' setting within the Project Propertes page, on the Application tab. (And therefore the actual entrypoint is hidden from us.) But a VB.NET console application does use a Sub Main().

Quote:

I just started using C# yesterday. As if it wasn't obvious.

It's all good, learning's fun.

05-10-2007, 01:43 PM

vbuser2006 vbuser2006 is offline

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Quote:

Originally Posted by Mike_R

Let's just forget the thing I said about the main thing, it was there tucked away in the program.cs all along...