ClientScriptManager::GetCallbackEventReference Method (Control, String, String, String, Boolean)
Obtains a reference to a client function that, when invoked, initiates a client call back to server events. The client function for this overloaded method includes a specified control, argument, client script, context, and Boolean value.
Assembly: System.Web (in System.Web.dll)
public: String^ GetCallbackEventReference( Control^ control, String^ argument, String^ clientCallback, String^ context, bool useAsync )
Parameters
- control
- Type: System.Web.UI::Control
The server Control that handles the client callback. The control must implement the ICallbackEventHandler interface and provide a RaiseCallbackEvent method.
- argument
- Type: System::String
An argument passed from the client script to the server
RaiseCallbackEvent method.
- clientCallback
- Type: System::String
The name of the client event handler that receives the result of the successful server event.
- context
- Type: System::String
Client script that is evaluated on the client prior to initiating the callback. The result of the script is passed back to the client event handler.
- useAsync
- Type: System::Boolean
true to perform the callback asynchronously; false to perform the callback synchronously.
| Exception | Condition |
|---|---|
| ArgumentNullException | The Control specified is nullptr. |
| InvalidOperationException | The Control specified does not implement the ICallbackEventHandler interface. |
This overload of the GetCallbackEventReference method requires a useAsync parameter, which allows you to perform the client callback asynchronously by setting the value to true. The overload versions of this method that do not require the useAsync parameter set the value to false by default.
For more information on this method, see the remarks for the overload GetCallbackEventReference method.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.