did think I read something somewhere in the Silverlight forms that you could add Controls dynamically to the base class (but there was no example).

Can you please give me the link? Normally, I used to read the most of messages in Silverlight forum..

The reason why is because I want to extend the functionality of my UserControl.

As you already know, we can’t add XAML in base control. This is the main thing.

Example #1:

Let’s say you have created one base class that has a function called validatedUser(string,string). Then, you create another class that inherits from base class and you can comsume that functionality. then, it’s possible to do in Silverlight..

Example #2:

Let’s say you have created one base class that has a button. (You can’t have XAML so that it won’t show on Designer anyway.) then, you create another class that inherit from that base class.. but the button that you created in Base control won’t be shown. that’s why I’m wondering why you need to do that..

I have create BaseControl in a silverlight class library,then create a User Control Inheritance from BaseControl ,but the user control is in other project(a silverlight application) who reference to this class library,then we i build the project,VS modify the usercontrol.g.cs change the baseControl back to UserControl…

Please check two things

1)
xmlns="http://schemas.microsoft.com/client/2007"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="400" Height="300">

You should use BaseControl instead of User Control.

2) public partial class InheritedControl : BaseControl {

Your class should be inherited from BaseControl.

I have create BaseControl in a silverlight class library,then create a User Control Inheritance from BaseControl ,but the user control is in other project(a silverlight application) who reference to this class library,then we i build the project,VS modify the usercontrol.g.cs change the baseControl back to UserControl…

thanks again

dean

The reason why is because I want to extend the functionality of my UserControl. I’ve created a Silverlight application that has a UserControl that has a bunch of child custom UserControls and it does a bunch of things. I now want to create administration functionality for my application and take that base UserControl and add more functionality and child UserControls to it.
I can’t just re-write the UserControl, because the child UserControls depend on the parent being of a specific type with some menthods. So if I re-write one I have to re-write them all and then I have a lot of duplicated code.

However I have one more question, how can I add the controls dynamically in the base class (BaseControl)?

There isn’t a this.Children.Add() as it’s a UserControl and I get a null value when I call Application.Current.RootVisual

What am I missing?

Thanks