StateBag.Add(String, Object) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
public:
System::Web::UI::StateItem ^ Add(System::String ^ key, System::Object ^ value);
public System.Web.UI.StateItem Add (string key, object value);
member this.Add : string * obj -> System.Web.UI.StateItem
Public Function Add (key As String, value As Object) As StateItem
Parameters
Returns
Returns a StateItem that represents the object added to view state.
Exceptions
Examples
The following code example demonstrates using the Add method.
void MovePiece(string fromPosition, string toPosition) {
StateBag bag = ViewState;
object piece = bag[fromPosition];
if (piece != null) {
bag.Remove(fromPosition);
bag.Add(toPosition, piece);
RenderBoard();
}
else {
throw new InvalidPositionException("There is no game piece at the \"from\" position.");
}
}
Sub MovePiece(fromPosition As String, toPosition As String)
Dim bag As StateBag = ViewState
Dim piece As Object = bag(fromPosition)
If Not (piece Is Nothing) Then
bag.Remove(fromPosition)
bag.Add(toPosition, piece)
RenderBoard()
Else
Throw New InvalidPositionException("There is no game piece at the ""from"" position.")
End If
End Sub 'MovePiece
Applies to
See also
意見反應
https://aka.ms/ContentUserFeedback。
即將登場:在 2024 年,我們將逐步淘汰 GitHub 問題作為內容的意見反應機制,並將它取代為新的意見反應系統。 如需詳細資訊,請參閱:提交並檢視相關的意見反應