Windows Phone 8 app does not contain a definition for InitializeComponent

Question

I have just downloaded the 14 CTP version of Visual Studio and created a blank app for Windows Phone. I tried to open the MainPage.xaml and the designer shows u

Answer 1

Ensure the class name on your XAML matches the class name in your code-behind. I've run into this a few times while refactoring.

XAML Opening Tag:

Code Behind:

public sealed partial class Bar : UserControl
{
    public Bar()
    {
        // This will become the error specified (does not contain definition)
        this.InitializeComponent(); 
    }
    ...
}

So Namespace.Foo would need to be Namespace.Bar here to get rid of the error. This should have the same behavior if using Page instead of UserControl.