如何将我的app.xaml设置为指向*.cs文件而不是*.xaml？

<Application x:Class="YourNamespace.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
         
    </Application.Resources>
</Application>

<Application x:Class="YourNamespace.AppLogic"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
         
    </Application.Resources>
</Application>

namespace YourNamespace
{
    public partial class AppLogic : Application
    {
        // 应用程序的全局逻辑代码
    }
}