How to access the collection of dock-enabled controls in WinForms Docking Manager?

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Collection of dock enabled control

The DockingManager.Controls property returns an enumerator that may be used for accessing the controls that are currently associated with the DockingManager.

If you want to modify the DockingManager’s control set in any way, then the contents of the enumerator should first be copied to a temporary collection. The following sample shows an implementation that disables docking and disposes of all the dockable controls.

IEnumerator ienum = this.dockingManager1.Controls;
ArrayList dockedctrls = new ArrayList();
while(ienum.MoveNext())
dockedctrls.Add(ienum.Current);
foreach(Control ctrl in dockedctrls)
{
   this.dockingManager1.SetEnableDocking(ctrl, false);
   ctrl.Dispose();
}

Dim ienum As IEnumerator = Me.dockingManager1.Controls
Dim dockedctrls As ArrayList = New ArrayList()
Do While ienum.MoveNext()
dockedctrls.Add(ienum.Current)
Loop
Dim ctrl As Control
For Each ctrl In dockedctrls
    Me.dockingManager1.SetEnableDocking(ctrl, False)
    ctrl.Dispose()
Next

Reference link: https://help.syncfusion.com/windowsforms/dockingmanager/dock-window#enabledisable-dock-functionality

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