Visual Studio 2010 designer error: Value cannot be null. Parameter name: objectType

Posted  Thursday January 2011 alle 10:45

It’s a fact that the Visual Studio 2010 Designer has some problems when dealing with inherited windows forms with a very very deep inheritance hierarchy (inheritance level > 2). Working on one of my legacy project I converted from VS2008 to VS201


Tale of an ‘asp:Content control that do not correspond with asp:ContentPlaceHolder’ Master Page Error

Posted  Wednesday August 2010 alle 04:09

If, like me, you are so unlucky to encounter the infamous: ‘The page has one or more <asp:Content> control that do not correspond with <asp:ContentPlaceHolder> control in master page.’ Figure 1 - The designer showing the master page


WPF: force all the validation rules attached to an object to be executed

Posted  Wednesday August 2009 alle 12:57

I’m working on a WPF application that have some validation performed through the standard ValidationRule system employed by WPF at the UI level. Recently I needed a way to validate (that is check the state and force the execution of any valida...