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How to apply tabbed MDI mode to an MDIContainer in WinForms TabbedMDIManager?
Apply Tabbed MDI mode
The AttachToMdiContainer property of the TabbedMDIManager applies the Tabbed MDI mode to an MDIContainer.
C#
private TabbedMDIManager tb; this.tb = new TabbedMDIManager(); this.IsMdiContainer = true; this.tb.AttachToMdiContainer(this);
VB
Private tb As TabbedMDIManager Me.tb = New TabbedMDIManager() Me.IsMdiContainer = True Me.tb.AttachToMdiContainer(Me)
Reference link: https://help.syncfusion.com/windowsforms/tabbedmdi/getting-started#add-form-as-tabbed-mdi-child