Question

I have a web User Control (.ascx file) and I would like to initialize some private members. But if I try to create a parameterless constructor like this:

<%@ Control Language="C#" ClassName="MyControl" %>

public MyControl() { }

I get the error:

Type ‘ASP.MyControl’ already defines a member called ‘MyControl’
with the same parameter types

with a source file that’s under C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\...

Answer 1

I just had the same problem. How I solved it was to create a base class with a method that I will use in the user control to do whatever it is that needs doing.

(Edit: I forgot to mention that my base class is also marked abstract)

In the base class define:

public abstract void DoSomethingSpecial();

The base class calls this in it’s own constructor:

public MyBaseClass()
{
    DoSomethingSpecial();
}

Then in the usercontrol I inherit the base class in the page directives:

<%@ Control Language="C#" AutoEventWireup="true" Inherits="MyAppNamespace.myBaseClass" ... %>

The final step is to actually implement the new method in the usercontrol:

 public override void DoSomethingSpecial()

That was my solution.