调用线程无法访问此对象，因为另一个线程拥有它。 [英] The calling thread cannot access this object because a different thread owns it.

问题描述

  public   void  LoadData（）
 {
  var  manager =  new  ManageFactory& lt; ISmartDealerManager& gt;（）。GetManager（）; 
 List& lt; DealerItem& gt; DealerCollection = manager.LoadDealerData（）; 
 MainDataGrid.Items.Clear（）; 
 MainDataGrid.ItemsSource =  null ; 
 Thread.Sleep（ 2000 ）; 
  if （DealerCollection.Count（）& gt;  0 ）
 { 
 MainDataGrid.Items.Clear（）; 
  this  .Dispatcher.BeginInvoke（ new  Action（（）=& gt; 
 {
 MainDataGrid.ItemsSource = DealerCollection; 
 lblError.Visibility = Visibility.Hidden; 
}），DispatcherPriority.Background）; 
 
} 
  else  
 {
 MainDataGrid.ItemsSource = 空; 
 lblError.Visibility = Visibility.Visible; 
} 
 EnableDisableItems（）; 
  this  .WaitingScreen.IsLoadingVisible =  true ; 
} 
} 
 
线程MyNewThread = 新线程（ new  ThreadStart（（）=& gt; LoadData（）））; 
 MyNewThread.IsBackground =  true ; 
 MyNewThread.Start（）; 

这里我在MainDataGrid.Items.Clear（）;行收到错误



和想法请。

解决方案

嗨拉曼，



答案很简单，你试图清除UI线程之外的MainDataGrid.Items。



你应该改变你的代码：

  if （DealerCollection.Count（）>  =  0 ） 
 {
 
  this  .Dispatcher.BeginInvoke（ new  Action（ （）= >  
 {
 MainDataGrid.Items.Clear（）; 
 MainDataGrid.ItemsSource = DealerCollection; 
 lblError.Visibility = Visibility.Hidden; 
}），DispatcherPriority.Background）; 
 
} < /   pre  >  

public void LoadData()
       {
           var manager = new ManageFactory<ISmartDealerManager>().GetManager();
           List<DealerItem> DealerCollection = manager.LoadDealerData();
           MainDataGrid.Items.Clear();
           MainDataGrid.ItemsSource = null;
           Thread.Sleep(2000);
           if (DealerCollection.Count() > 0)
           {
               MainDataGrid.Items.Clear();
               this.Dispatcher.BeginInvoke(new Action(() =>
               {
                   MainDataGrid.ItemsSource = DealerCollection;
                   lblError.Visibility = Visibility.Hidden;
               }), DispatcherPriority.Background);

           }
           else
           {
               MainDataGrid.ItemsSource = null;
               lblError.Visibility = Visibility.Visible;
           }
           EnableDisableItems();
           this.WaitingScreen.IsLoadingVisible = true;
       }
   }

Thread MyNewThread = new Thread(new ThreadStart(() => LoadData()));
            MyNewThread.IsBackground = true;
            MyNewThread.Start();

Here i am getting error at line " MainDataGrid.Items.Clear();"

and idea please.

解决方案

Hi Raman,

The answer is very simple, you are trying to clear the MainDataGrid.Items outside of the UI thread.

You should change your code:

if (DealerCollection.Count() >= 0)
{
  
    this.Dispatcher.BeginInvoke(new Action(() =>
    {
        MainDataGrid.Items.Clear();
        MainDataGrid.ItemsSource = DealerCollection;
        lblError.Visibility = Visibility.Hidden;
    }), DispatcherPriority.Background);

}</pre>

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