Gets or sets the value of the cache key for the data source control from view state, or adds the cache key to view state.
Assembly: System.Web (in System.Web.dll)
The property enables you to manually create a cache key for the XmlDataSource control. This is required only if you are assigning an object that contains XML or XSLT data to the control instead of specifying a file that contains the data. When you assign data to the control, the data is not used to generate the cache key. Instead, you must manually generate a unique cache key if you plan to update the data object.