Extending string with Extension Methods (C# 3.0)?

Question

I know I can extend the string class like so:

public static class EMClass
{
   public static int ToInt32Ext(this string s)
   {
      return Int32.Parse(s);
   }
   public static int ToInt32Static(string s)
   {
      return Int32.Parse(s);
   }
}

And use it like this:

string x = "12";
x.ToInt32Ext()

But how can I make it to where I can use it like this:

int x = string.ToInt32("15");

Answer 1

I don't think you can do "static" extension methods.