Splitting WPF interface across multiple Xaml files

Question

I am trying to create a user interface using XAML. However, the file is quickly becoming very large and difficult to work with. What is the best way for splitting it across

Answer 1

You can split a large user interface by defining UserControls.

Right-click on the solution tree, choose Add->New Item... then User Control. You can design this in the normal way.

You can then reference your usercontrol in XAML using a namespace declaration. Let's say you want to include your UserControl in a Window. In the following example I've added a UserControl named "Foo" to the namespace "YourCompany.Controls":

For your specific example, you would make use of your usercontrol in a combobox by defining a DataTemplate that displayed the data within your usercontrol.