Assembly: System.Web (in System.Web.dll)
Thetype exposes the following members.
|Arguments||Provides a mechanism that the ObjectDataSource object can use to request data-related operations when data is retrieved.|
|Cancel||Gets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs.)|
|ExecutingSelectCount||Gets a value indicating whether the ObjectDataSource is retrieving a row count during a data retrieval operation.|
|InputParameters||Gets a collection that contains business object method parameters and their values. (Inherited from ObjectDataSourceMethodEventArgs.)|
|Equals(Object)||Determines whether the specified object is equal to the current object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as the default hash function. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
The class is used in the OnSelecting method. Because it is derived from the ObjectDataSourceMethodEventArgs class, the class provides access to input parameters for validation and manipulation through the InputParameters property. The class also provides the ExecutingSelectCount property, which is used to check whether the currently executing data retrieval operation is retrieving a row count, in addition to the data. This is important because when data source paging is enabled, the Selecting event is raised twice. For more information, see ExecutingSelectCount.
The ObjectDataSource control exposes many events that you can handle to work with the underlying business object at various times in its life cycle. The following table lists the events and associated EventArgs classes and event handler delegates.
Occurs immediately before the business object is instantiated.
Occurs immediately after the business object is instantiated.
Occurs before the data is retrieved.
Occur before an insert, update, or delete operation is performed.
Occurs after the data is retrieved.
Occur after the insert, update, or delete operation is completed.
Occurs before a business object is destroyed.