Calling constructor inside constructor in C#

To call one C# constructor from another, before the body of the constructor, use either:

: base (parameters)

to call a constructor in the base class; or:

: this (parameters)

to call a constructor in this class.

The following examples illustrate how to call one constructor from another.

public class myPopUp
{
   public myPopUp(int width, int height, myPopUp parentPopUp) : this (width, height)
   {
       this.ParentPopUp = parentPopUp;
   }
}