Visual C# simple problem

Hi,

I'm fairly new to programming and I'm having a weird error in both the new Visual Studio Beta and Visual C# Express 2010.

Here's the issue: I create a new Windows Form Application and add a button on it. I double click the button to get this code automatically:

private void button1_Click(object sender, EventArgs e)
{
}

However, if I decide to delete these three lines, my program won't compile anymore. I've messed around with with VB.net before and this didn't happen. Is it normal? How can I fix it?

I realized that I can remove the code when I delete the button, but is there any other way? (If I double click on something by mistake for example.)

Thanks a lot!


Here's the error:

Error 1 'WindowsFormsApplication1.Form1' does not contain a definition for 'button1_Click' and no extension method 'button1_Click' accepting a first argument of type 'WindowsFormsApplication1.Form1' could be found (are you missing a using directive or an assembly reference?) C:\Users\Username\AppData\Local\Temporary Projects\WindowsFormsApplication1\Form1.Designer.cs 42 64 WindowsFormsApplication1

Quote:

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Originally Posted by MightUndoIt

Hi,

Error 1 'WindowsFormsApplication1.Form1' does not contain a definition for 'button1_Click' and no extension method 'button1_Click' accepting a first argument of type 'WindowsFormsApplication1.Form1' could be found (are you missing a using directive or an assembly reference?) C:\Users\Username\AppData\Local\Temporary Projects\WindowsFormsApplication1\Form1.Designer.cs 42 64 WindowsFormsApplication1

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This error is quite clear you unfortunatly created a click event by doing some clicks in the enviroment and when you delete the click events delegate you also need to delete the line where this delegate is used.
Goto the Form1.Designer.cs
How to do: rightclicking in Form1.cs the Forms
InitializeComponent() method s and use 'goto definition' in the context menue then this will open the method which is located in the Dorm1.Designer.cs
and in that method find the line

Code:

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  button1.Click += new System.EventHandler(this.button1_Click);


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and remove that line
Then the error is gone :D

Simple way, you double click on error line in Error list window, VS will help you find where a line make this error. In this situation, you can delete error line.

Quote:

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Originally Posted by zquanghoangz

Simple way, you double click on error line in Error list window, VS will help you find where a line make this error. In this situation, you can delete error line.

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Sorry if you only delete the errormessage and recompile you will still get the same erormessage you really need to go to the click event in the design view and there deleting the event delegate so this field of the click event is empty

What I mean it really like you talk. Maybe I write too hard to understand.
When you delete function, I will have error message, because delegate event already exist.
So, double click on error you will go to error line. Delete that line. It's OK.

I think it is normal error. Many newbie meet.