Prevents the control from being updated until the ASPxScheduler.EndUpdate method is called.
The BeginUpdate method locks the control until the ASPxScheduler.EndUpdate method is called. Any changes made after a call to the BeginUpdate method won't cause the control to update itself. The EndUpdate method invalidates and unlocks the control so that any further changes made are applied immediately.
To ensure that EndUpdate is always called even if an exception occurs, wrap any calls to these methods in a try...finally statement.
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