CODEWITHSUNDEEP
c#.netwpfxaml
user6262880
user6262880

Reputation:

Is it necessary to inherit System.Windows.Application base class for WPF Application?

In VS2015, when we generated new WPF project, it contains App.xaml(.cs). I suppose that it will be an entry point of WPF application. Then App.xaml.cs becomes like:

...
using System.Windows;

namespace WpfApplication
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
    }
}

Now, I remove inheritance of System.Windows.Application, still it seems to be working...

- public partial class App : Application
+ public partial class App

So let me ask: App class does not need to inherit System.Windows.Application? What is the difference?

thanks.

Upvotes: 2

Views: 429

Answers (1)

Scott Chamberlain
Scott Chamberlain

Reputation: 127543

No it is not required. In your code you have the class defined as partial, this allows your code and autogenerated code by the compiler to be combined.

In your App.xaml you have

<Application x:Class="WpfApplication.App" ...

This tells the compiler you are creating a object of type Application with the name WpfApplication.App so the auto-generated code will include the inherited type class. Once your WpfApplication.App code is combined with the auto-generated WpfApplication.App the inheritance is already defined.

Upvotes: 2

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