opacity usercontrol c#.net 3.5

Why does not a user control have the 'Opac开发者_如何学编程ity' property? How can I use set the property on a user control?

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For winforms

To make a UserControl transparent, we have to give it a WS_EX_TRANSPARENT style, override its OnPaintBackground method to draw the background with the opacity, and then invalidates its Parent to redraw the control whenever we need to update the graphics

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For WinForms

You can just set User Control Background property to Transparent in web colors tab

but for opacity such as 50% i am looking for a solution.