How can I call a methode from the MainWindow without making an instance of it?

Question

I have a method in my Mainwindow, i want to call this method in an other usercontrol. I dont use a static method because my MainWindow is not Static, and I can't make it static. So I figured out to use this, but I dont know what comes behind the AS and I dont know if I can put a method is VAR? I also can't make another MainWindow instance because that gives me a Stackoverflow exception. How can I solve this? var myMethode= mainWindow.FindName("MyMethode") as (should be a methode); if (myMethode!= null) { //My code } JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

You can define a static method on a class that is not static. For example: static void Main() { Foo foo = new Foo(); Foo.DoSomething(); foo.DoSomethingElse(); } public class Foo { public static void DoSomething() { Console.WriteLine("DoSomething"); } public void DoSomethingElse() { Console.WriteLine("DoSomethingElse"); } } But wouldn't it be a better solution to pass the MainWindow as a parameter into the User Control? So the user controls knows to which window it belongs and can access a function on it? (even better to declare an interface for this and pas the interface around). This would look like: public interface IWindow { string SomeWindowActivity(); } public class MyUserControl { public IWindow Window { get; set; } public void SomeActionOnUserControl() { string data = Window.SomeWindowActivity(); } } public class MainWindow : IWindow { MyUserControl MyUserControl { get; set; } public MainWindow() { // Link the UserControl to the Window it's one. This can be done trough the // constructor or a property MyUserControl.Window = this; } public string SomeWindowActivity() { // Some code... return "result"; } }