Split Generic.xaml in Silverlight Applications

If you work with Templated controls in a big Silverlight project, your Generic.xaml might grow fast. Here’s a quick tutorial on how to split the Generic.xaml into multiple resource files.

Step1: Find the resource

You will typically have the control code:

public class TemplatedControl1 : Control {
    public TemplatedControl1() {
        this.DefaultStyleKey = typeof(TemplatedControl1);
    }
}

and the XAML in the Generic.xaml:

<Style TargetType="local:TemplatedControl1">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="local:TemplatedControl1">
                <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Step2: Create a new resource file

Create a copy of Generic.xaml and rename to TemplatedControl1.xaml.
Delete the TemplatedControl1 style from Generic.xaml.
So Generic.xaml looks like:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:SilverlightApplication1">
</ResourceDictionary>

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