C# design mode and delegates

Hi there
 
I have a public property that is a delegate to a function.
 
I want the C# designer to have a drop down box to select a function that matches the delegate.
 
The following doesn't seem to work

[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public SomeDelegate Matching Function{get;set;}