2 references to MDIContainerMustBeTopLevel
System.Windows.Forms (2)
System\Windows\Forms\Form.ControlCollection.cs (1)
35
throw new ArgumentException(SR.
MDIContainerMustBeTopLevel
, nameof(value));
System\Windows\Forms\Form.cs (1)
1967
throw new ArgumentException(SR.
MDIContainerMustBeTopLevel
, nameof(value));