.net - Edit UserControl subclass in Windows Form Designer? -

in vs2010, targeting framework 4.0, have usercontrol contains tablelayoutpanel empty second row.

is possible add items second row using windows forms designer, or have via code?

edit: in reply hans passant's comment, linked question references usercontrol being used inside control. asking question inherited controls.

i have created following test code, testcontrol usercontrol containing tablelayoutpanel named "tablelayoutpanel1":

imports system.componentmodel imports system.windows.forms.design  <designer(gettype(testdesigner))> public class testcontrol end class  public class testdesigner     inherits controldesigner     public overrides sub initialize(component system.componentmodel.icomponent)         mybase.initialize(component)         dim x testcontrol = ctype(component, testcontrol)         enabledesignmode(x.tablelayoutpanel1, "tablelayoutpanelx")     end sub end class 

creating following class in new file:

public class testinheritedcontrol     inherits testcontrol end class 

creates control which, when viewed in designer, contained tablelayoutpanel named "tablelayoutpanel1" not designer-editable. situation described in original question, not solved.

creating new usercontrol, not inheriting either of previous usercontrols, , placing testcontrol creates instance of testcontrol designer-editable tablelayoutpanel named "testcontrol1.tablelayoutpanelx".

is there way make testinheritedcontrol class, shown above, designer-editable?

i had similar today. way worked around use un-instantiated references in base class, actual instantiation on inheriting class.

you have add couple of steps make plug-in, gives control want. have drop tablelayoutpanel onto each inheriting control type, , in constructor, set base class' version current instantiated version (after calling initializecomponents).

this way, can "design" in inheriting control, use programmaticly base control.