StateManagedCollection.OnValidate(Object) Method

Definition

Namespace:

System.Web.UI

Assembly:

System.Web.dll

When overridden in a derived class, validates an element of the StateManagedCollection collection.

protected:
 virtual void OnValidate(System::Object ^ value);

protected virtual void OnValidate (object value);

abstract member OnValidate : obj -> unit
override this.OnValidate : obj -> unit

Protected Overridable Sub OnValidate (value As Object)

Parameters

value

Object

The IStateManager to validate.

Exceptions

ArgumentNullException

value is null.

Remarks

The OnValidate method is called to validate the object manipulated through the StateManagedCollection implementation of the IList interface methods. The default implementation is to verify that the object manipulated by the collection is not null; however, collections derived from StateManagedCollection override the OnValidate method to perform any additional validation, such as type-checking.

See also

• IList.Add(Object)
• IList.Contains(Object)
• IList.IndexOf(Object)
• IList.Insert(Int32, Object)
• IList.Remove(Object)
• IList.RemoveAt(Int32)