Creatin MDI Parent, Child, Menu Strip In MDI ,Open Form, Close All Forms in C# Windows Forms

جميل

Hi, I did what you did but it throws an exception unhandled at forech (Form f in Application.OpenForms) saying System.InvalidOperationException. Why?

Thank you for this video !

thanks sir working well

Hello thank you for the video. I did all but again form in parent-child mdi opened as many as clicked.

hi excuse me you know i have a problem when to open the md child i hidden the menu, my question is , how i do to show the menu of the mdi parent when close mdi child?

nice why not you make visible the code ? i want to copy it haha

Hello Mr "code factory 2016 ", if I want do it on the Tree-view control, so how can I do it, please kindly advice to me something or some idea

Thanks!

Thanks