| System.Web.UI (system.web.dll) | sealed class |
Every control stores view state information in a
StateBag provided in the
Control.ViewState property, if you enabled the
Control.EnableViewState property. View state
includes information representing all properties of a control or page
and any custom items you added. Information is provided in a
key/value collection and is accessed much like the
System.Web.SessionState.HttpSessionState or
System.Web.Caching.Cache class. You can add a
value to the StateBag collection like this:
ViewState["NewObject"] = ds;.
The StateBag can contain primitive types or
full-fledged serializable objects. When retrieving an object, you
will have to cast it to the correct type. Also note that you can
enumerate through the StateBag collection by using
the StateItem enumerator.
public sealed class StateBag : IStateManager, IDictionary, ICollection, IEnumerable {
// Public Constructors
public
StateBag ( );
public
StateBag (bool
ignoreCase );
// Public Instance Properties
public int
Count {get; } // implements ICollection
public ICollection
Keys {get; } // implements System.Collections.IDictionary
public object
this [string
key ]{set; get; }
public ICollection
Values {get; } // implements System.Collections.IDictionary
// Public Instance Methods
public StateItem
Add (string
key , object
value );
public void
Clear ( ); // implements System.Collections.IDictionary
public IDictionaryEnumerator
GetEnumerator ( ); // implements System.Collections.IDictionary
public bool
IsItemDirty (string
key );
public void
Remove (string
key );
public void
SetItemDirty (string
key , bool
dirty );
}
Returned By
Control.ViewState,
System.Web.UI.MobileControls.MobileControl.CustomAttributes,
System.Web.UI.WebControls.DataGridColumn.ViewState
Passed To
AttributeCollection.AttributeCollection( ),
System.Web.UI.WebControls.Style.Style( ),
System.Web.UI.WebControls.TableItemStyle.TableItemStyle(
),
System.Web.UI.WebControls.TableStyle.TableStyle( )