Hello i am getting an Stackoverflow Exception in this two dialog. Dialog A is being called from a main dialog class. Dialog A have a choice to go to Dialog A
In Visual Studio you can check your call stack and you will know where is the exact problem in your StackOverflowException.
If DialogA is the base class of DialogA_child then in your DialogA_child's constructor and your base class constructor will be calling themselfs recursively.
So your call stack should look like this:
DialogA constructor add new DialogA_childDialogA_child calls base(so DialogA constructor)DialogA constructor add new DialogA_childDialogA_child calls base(so DialogA constructor)