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What happens if UpdatePanel panel is not defined?
If the ContentTemplate property is not defined for the UpdatePanel control, no updates of the panel will occur.
When to call the update method of the UpdatePanel control explicitly?
When you call the Update method of the UpdatePanel control explicitly. When the UpdatePanel control is nested inside another UpdatePanel control, and the parent panel is updated. When a postback is caused by a control that is defined as a trigger by using the Triggers property of the UpdatePanel control.
What does UpdatePanel do in ASP.NET page framework?
Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering. Creates a Control object that acts as a container for child controls that define the UpdatePanel control’s content.
How is an update panel used in a form?
I’m using an update panel on a form to stop the page jumping and flickering when drop down lists etc are selected, I have enclosed the table which holds this inside of an update panel and a content template.
When to call the updatepanel.update method?
In a typical page development scenario, if you define triggers or if the ChildrenAsTriggers property is true for the UpdatePanel control, the Update method is automatically called during the page life cycle. If the ContentTemplate property is not defined for the UpdatePanel control, no updates of the panel will occur.
Can a nested UpdatePanel control cause an update?
Child controls of nested UpdatePanel controls do not cause an update to the outer UpdatePanel control unless they are explicitly defined as triggers for the parent panel. If the ChildrenAsTriggers property is set to false and the UpdateMode property is set to Always, an exception is thrown.
How does the UpdatePanel control work in Windows 10?
You do this by defining a trigger for the UpdatePanel control. A trigger is a binding that specifies which postback control and event cause a panel to update. When the specified event of the trigger control is raised (for example, a button’s Click event), the update panel is refreshed.