How To Expose Child Control Style Properties In A Custom Composite WebControl

Feb 23, 2010

I am writing a custom composite WebControl and want to expose styles of child controls it encapsulates to the ASP.NET designer. The code I currently have is similar to the skeleton below (which for simplicity only has one child control).

With the code below, I can see property "ChildPanelStyle" in the designer, but when I try to modify one of the properties (e.g. CssClass) in the designer, it immediately resets itself to its default value. It looks like the designer serialization isn't happening.

What am I doing wrong?

UPDATE

I've updated the sample with an additional style property that is managed directly by the custom control, rather than simply being the property of a child control.

The HeaderStyle property is persisted properly by the designer, but the ChildPanelStyle property isn't.

Of course I could manage all my styles like HeaderStyle, and apply them during rendering, but I'm hoping there's a simpler solution whereby child controls can take care of themselves, and I don't need any custom rendering.

[code]....

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