I have a MainWindow and a DetailedBookView . i want use Method and field from DetailedBookView in MainWindow class whit out using new object... MainWindows isn't parent of DetailedBook ... please help me to write code in MainWindow to use DataContaxt in MainWindow. 

```
public partial class MainWindow : Window
{
    //use DataContaxt method here without using new object
    enter code here

}

public partial class DetailedBookView : UserControl
{
    int DataContaxt = 10;
}

```