On the way to partial classes, I nearly pulled out all of my hair...
I have an project written in Visual Studio .NET 2003 at home. Around midnight, I get the bright idea to take my two forms and convert them to the newer style of form, which uses partial classes to separate the designer-inserted code and the user-code for a form class.
Great.
The first step was to remove Main() from my form. When you create a new project in Visual Studio .NET 2005, you get a Program.cs file which contains the global main. It looks like this:
#region Using directives
using System;
using System.Collections.Generic;
using System.Windows.Forms;
#endregion
namespace WindowsApplication1
{
static class Program
{
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.EnableRTLMirroring();
Application.Run(new Form1());
}
}
}
The ApplicationModel class above is my experiment, not default code. The second step is to divide your form class into two sections. So, I generated a new project and used it as a reference. I noticed a few things:
- The designer class dosn't show up in the IDE's file list. I saw in the csproj file (a simple XML file) that the designer file is simply a dependent file to the main form file that you own.
- The designer file has the definition for Dispose(),
- It is home to all of your control member variables,
- It doesn't specify a base class (this is done by your main form class, though no error is generated if you re-specify it... this has some interesting implications).
- Finally, the designer file declares the components IContainer variable.
So, in about 5 minutes I cut and paste myself into a corner and was left with a form with no controls on it and multiple compilation errors.
I resolved the compilation errors and guess what? I still have a form with no controls on it.
I decide to re-do my entire form, using my old form as a reference. Note that it's about 12:30am and I'm getting tired.
Now I have a form with controls on it, but the designer code is inserted into my regular class file and not the designer file.
Bitch!
I decide to go to bed, leaving my code in ruin. This is almost as bad as going to bed mad at your spouse. I really wanted to make up with the code, but it left me on the couch and a fitful sleep it was.