Inheriting from a UserControl abstract subclass

问题:

I have a set of UserControls that need to have a few similar properties. Thus I have defined an abstract subclass of UserControl that defines these properties and updated the .xaml.cs and .g.cs files to inherit from this base class. All compiles well and runs well. Great! But.... .g.cs files are generated and will be regenerated, so how do I tell Blend or Visual Studio to keep inheriting from my base class rather than UserControl?

回答1:

You need to change the XAML a bit to prefix the UserControl declaration with a namespace:

<local:MyBaseControl x:Class="MyNameSpace.MyControl"
    xmlns:local="clr-namespace:MyNameSpace"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <!-- Content -->
</local:MyBaseControl>

Where MyNameSpace is your namespace (duh!), MyBaseControl is your base class and MyControl is your control that inherits from MyBaseControl. The x:Class part doesn't need to be in the same namespace, I've just kept it the same for the example.

More info here and here.