aspnet-devexpress-dot-xtracharts-dot-web-dot-webchartcontrol-cae56845.md
Occurs when a chart saves its view state between multiple callbacks.
Namespace : DevExpress.XtraCharts.Web
Assembly : DevExpress.XtraCharts.v25.2.Web.dll
NuGet Package : DevExpress.Web.Visualization
public event CallbackStateSaveEventHandler CallbackStateSave
Public Event CallbackStateSave As CallbackStateSaveEventHandler
The CallbackStateSave event's data class is CallbackStateSaveEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Chart | Gets the chart for which the event was raised. Inherited from CallbackStateEventArgs. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| SetPropertyValue(String, Object) | Sets a new value for the specified property on the WebChartControl.CallbackStateSave event. |
Handle the CallbackStateSave and WebChartControl.CallbackStateLoad events to manually decide which property values should be passed between a server and a client on callbacks. To set a property value to be passed, use the CallbackStateSaveEventArgs.SetPropertyValue method. To load a property value, use the CallbackStateLoadEventArgs.GetPropertyValue method.
Note
The CallbackStateSave and CallbackStateLoad events are raised only if the WebChartControl.SaveStateOnCallbacks property is set to true.
See Also