https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.toolstrip.allowitemreorder?view=netframework-4.8.1
ToolStrip.AllowItemReorder Property (System.Windows.Forms) | Microsoft Learn
Gets or sets a value indicating whether drag-and-drop and item reordering are handled privately by the ToolStrip class.
property systemwindows formsmicrosoftlearn