Visual inheritance and .NET IDE

  • Thread starter Thread starter Deena
  • Start date Start date
D

Deena

Hi

I create a abstract base class("MyBaseForm") which extends
System.Windows.Forms.Form class. I add buttons,.... . I then extend another
class("MyDerivedForm") from "MyBaseForm". This compiles fine, runs fine but
as soon as I double click - MyDerivedForm - to view the form in the IDE
designer - the IDE designer gives me an error.

Is the a bug? I saw a similar post earlier with no suitable explanation.
This is basically what we are trying to do. Create a base class with
something like this:

namespace MyFormClassLibrary
{
public abstract class MyBaseForm : System.Windows.Forms.Form
{
public MyBaseForm ()
{
}

}
}

Then create another Form and change the superclass from
"System.Windows.Forms.Form " to the "MyPage" class created above:

namespace MyFormClassLibrary
{
public class MyDerivedForm : MyBaseForm
{
public MyDerivedForm()
{
}

}
}

Is there a fix for the IDE?
 
I ran into that problem months ago...

I got to the conclusion that you couldn't do that because of the IDE...

I wonder how Microsoft left that problem happen...

José.
 
How is that important?

And i think that is something pretty common...

BTW: have you accomplished using abstract classes for forms + IDE before?

José.
 
It is important because .NET IDE runs the control's code, and if it
encounters "parent", parent doesn't exist and it gets confused. Not only
that, if you have a custom paint event that occurs on some UI feedback, then
that might crash the IDE too (some stackoverflow exception cuz it goes in a
infinite paint loop .. dunnow why .. details aren't documetned/published no
way to find out either for sure).

Abstract base class - Yes I have.

--
- Sahil Malik
Independent Consultant
You can reach me thru my blog at -
http://www.dotnetjunkies.com/weblog/sahilmalik/
 
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