How to open an Editor Window by using the MethodInfo.Invoke function ?

I am trying to open my editor window via MethodInfo.Invoke but it will not work .

             if (GUI.Button(new Rect(0, 0, 200, 20), "Click Me"))
             {
                 Type thisType = typeof(EditorWindow);
                 MethodInfo theMethod = thisType.GetMethod("GetWindow", new Type[]{typeof(MyWindow)});
                 theMethod.Invoke("GetWindow", new object[]{typeof(MyWindow)});
             }

This works so why cant i get my editor window to show up

 if (GUI.Button(new Rect(0, 0, 200, 20), "Click Me"))
             {
                 Type thisType = typeof(TestThis);
                 MethodInfo theMethod = thisType.GetMethod("Up", new Type[]{typeof(String)});
                 theMethod.Invoke("Up", new object[]{" word "});
             }
 
 public class TestThis
 {
 
 
     public static void Up()
     {
         Debug.Log("Works");
     }
 
     public static void Up( String T)
     {
         Debug.Log(T);
     }
 }