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RadListControlBeginUpdate Method
Suspends internal notifications and processing in order to improve performance. This method is cumulative, that is, if BeginUpdate is called N times, EndUpdate must also be called N times. Calling BeginUpdate will cause the ItemsChanged event to stop firing until EndUpdate is called.

Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.UI (in Telerik.WinControls.UI.dll) Version: 2018.3.911.40 (2018.3.911.40)
Syntax
public void BeginUpdate()
See Also