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Creating the AssemblyResourceSetLoader Class

This topic is fourth in a multi-part walkthrough that continues from Creating a Style Group’s ResourceDictionary Files. This topic explains how to register each style group’s ResourceSet with the AssemblyResourceSetLoader class. This object registers and loads the ResourceSets when the ThemePack’s assembly is referenced in a project.

  1. Right click the MyThemePack project in the Solution Explorer, click Add on the pop-up menu, and then click Class on the sub-menu.

  2. In the Add New Item dialog box, name the class "ThemesOrangePeelAssemblyResourceSetLoader." Click Add.

  3. Before you start writing any code, you should place using/Imports directives at the top of your class file so you don’t need to always type out a member’s fully qualified name.

In Visual Basic:

Imports Infragistics.Windows
Imports Infragistics.Windows.Themes

In C#:

using Infragistics.Windows;
using Infragistics.Windows.Themes;

  1. Change the default namespace to "MyThemePack.ResourceSets.OrangePeel."

  2. This class derives from the AssemblyResourceSetLoader class.

In Visual Basic:

Public Class ThemesOrangePeelAssemblyResourceSetLoader
        Inherits AssemblyResourceSetLoader
        ...
End Class

In C#:

class ThemesOrangePeelAssemblyResourceSetLoader : AssemblyResourceSetLoader
{
        ...
}

  1. Any class that derives from AssemblyResourceSetLoader class must override the OnRegisterResourceSets method.

In Visual Basic:

...
Protected Overloads Overrides Sub OnRegisterResourceSets(ByVal groupingName As String)
        ...
End Sub
...

In C#:

...
protected override void OnRegisterResourceSets(string groupingName)
{
        ...
}
...

  1. Using the Instance method created in the style group’s class file, register the style group in the OnRegisterResourceSets method. The following code registers the Instance with the AssemblyResourceSetLoader.

In Visual Basic:

...
If groupingName Is Nothing Then
        'ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Primitives.Instance);
        'ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Editors.Instance);
    ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.DataPresenter.Instance)
Else
    Select Case groupingName
        Case "Primitives"
                        'ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Primitives.Instance);
                        Exit Select
        Case "DataPresenter"
                ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.DataPresenter.Instance)
            Exit Select
        Case "Editors"
                        'ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Editors.Instance);
                Exit Select
    End Select
End If
...

In C#:

...
if (groupingName == null)
{
        //ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Primitives.Instance);
        //ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Editors.Instance);
        ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.DataPresenter.Instance);
}
else
{
        switch (groupingName)
        {
                case "Primitives":
                        //ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Primitives.Instance);
                        break;
                case "DataPresenter":
                        ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.DataPresenter.Instance);
                        break;
                case "Editors":
                        //ThemesOrangePeelAssemblyResourceSetLoader.RegisterResourceSet(OrangePeel.Editors.Instance);
                        break;
        }
}
...

The final step in creating a ThemePack is modifying the AssemblyInfo file. Learn about these modifications in Modifying the AssemblyInfo File.