App.xaml in class library

Question

I have created a windows phone 7 custom class library, in that I have created App.xaml and App.xaml.cs files also(I have renamed them as MiEngineApp.xaml, MiEngineApp.xaml.c

Answer 1

You also have to change the App.xaml file. So this will be your MiEngine.xaml

<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             x:Class="MiEngine.MiEngineApp"
             >
    <Application.Resources>

    </Application.Resources>
</Application>

and MiEngine.xaml.cs:

namespace MiEngine
{
    public partial class MiEngineApp : Application
    {

        public MiEngineApp()
        {

This will be the App.xaml that inherits from (extends) MiEngine.xaml:

<z:MiEngineApp xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
             x:Class="SilverlightApplication6.App"

             xmlns:z="clr-namespace:MiEngine;assembly=MiEngine"
             >
    <z:MiEngineApp.Resources>

    </z:MiEngineApp.Resources>
</z:MiEngineApp>

Note the use of the z namespace so that i can reference the base class.
And the codebehind for that:

namespace SilverlightApplication6
{
    public partial class App : MiEngineApp
    {

        public App()
        {