C＃在运行时使用反射覆盖object.ToString（）

Question

I would like to override object.ToString() for struct in runtime using reflection? I need to change one struct, add new or modify existing override, in some .dll for which I don't have code. So I am thinking to do it in runtime.

Is it possible? Tutorial for this would be excellent? If answer is NO then: is answer different for class?

Answer 1

You cannot change the implementation of an existing class or struct using reflection. Sorry.

Answer 2

Wouldn't it be easier to just use an extension method ToStringNew() ?

public static class ExtensionMethods
{
    public static string ToStringNew(MyStruct str)
    {
        return ...;
    }
}

I thought that's what extension methods were designed for...