Can I add extension methods to an existing static class?

Question

I\'m a fan of extension methods in C#, but haven\'t had any success adding an extension method to a static class, such as Console.

For example, if I want to add an e

Answer 1

You can use a cast on null to make it work.

public static class YoutTypeExtensionExample
{
    public static void Example()
    {
        ((YourType)null).ExtensionMethod();
    }
}

The extension:

public static class YourTypeExtension
{
    public static void ExtensionMethod(this YourType x) { }
}

YourType:

public class YourType { }