EnableCancel() public static méthode

public static EnableCancel ( HttpRequestMessage request ) : void
request HttpRequestMessage
Résultat void
CancelManager Class Documentation
Exemple #1
0
        void SendAsyncCore(HttpRequestMessage request, object userState)
        {
            if (userState != null)
            {
                CancelManager.EnableCancel(request);
                lock (pendingAsync)
                {
                    HttpStageProcessingAsyncResult pend;
                    if (pendingAsync.TryGetValue(userState, out pend))
                    {
                        if (pend == null)
                        {
                            throw new ArgumentException("userState is not unique", "userState");
                        }
                        else
                        {
                            throw new ArgumentException("userState is already being used for " + pend.HttpAsyncState.request, "userState");
                        }
                    }
                    pendingAsync.Add(userState, null);
                }
            }
            var operation = AsyncOperationManager.CreateOperation(userState);
            var state     = new SendAsyncState(this, operation);
            var result    = this.BeginSendCore(request, SendCompletedCallback, state);

            if (userState != null && !result.IsCompleted)
            {
                lock (pendingAsync)
                {
                    Debug.Assert(pendingAsync[userState] == null);
                    pendingAsync[userState] = result;
                }
            }
        }