关于委托的问题，新人求助。。。

[EverlastingLoveWei]

       public void LoadOracle()
        {
            Client.GetUSERTABLEAsync();
            Client.GetUSERTABLECompleted += new EventHandler<GetUSERTABLECompletedEventArgs>(client_GetDatabyNameCompleted);
        }

 public void client_GetDatabyNameCompleted(object sender, GetUSERTABLECompletedEventArgs e)
        {
            System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE> temp = new System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE>();
            temp = e.Result;
            DataGrid3.ItemsSource = temp;
        }

 LoadOracle();

结果进不到

 public void client_GetDatabyNameCompleted(object sender, GetUSERTABLECompletedEventArgs e)
        {
            System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE> temp = new System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE>();
            temp = e.Result;
            DataGrid3.ItemsSource = temp;
        }

求助是为什么啊？

[vbfool]

要先注册事件，再做调用啊。

[EverlastingLoveWei]

引用 楼主 EverlastingLoveWei 的回复:

       public void LoadOracle()
        {
            Client.GetUSERTABLEAsync();
            Client.GetUSERTABLECompleted += new EventHandler<GetUSERTABLECompletedEventArgs>(client_GetDatabyNameCompleted);
        }

 public void client_GetDatabyNameCompleted(object sender, GetUSERTABLECompletedEventArgs e)
        {
            System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE> temp = new System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE>();
            temp = e.Result;
            DataGrid3.ItemsSource = temp;
        }

 LoadOracle();

结果进不到

 public void client_GetDatabyNameCompleted(object sender, GetUSERTABLECompletedEventArgs e)
        {
            System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE> temp = new System.Collections.ObjectModel.ObservableCollection<OracleService1.USERTABLE>();
            temp = e.Result;
            DataGrid3.ItemsSource = temp;
        }

求助是为什么啊？

换过了也是没有用的。。求解。。

[EverlastingLoveWei]

引用 2 楼 vbfool 的回复:

要先注册事件，再做调用啊。

注册了的。

 OracleServiceClient Client = new OracleServiceClient();

[EverlastingLoveWei]

引用 1 楼 KumaPower 的回复:

LoadOracle函数里面的两行代码互换一下顺序试试。

换过了，也是没用啊

[Bonjour-你好]

LoadOracle函数里面的两行代码互换一下顺序试试。