我今天已經問過這個問題，為什么我在這段代碼中得到一個異常（在這里查看）?，F在我不再收到異常，但它返回的標簽為空（它不返回標簽）。如有進一步問題，請隨時提問。如果我調試代碼并打開 grid.children 我得到以下路徑：grid.children --> not open members (in German it says: "nicht ?ffentliche member") --> _visualChildren --> not open members --> _items --> _my label i want to get_我的代碼：for (int i = 0; i < numberOfBooks; i++){    Grid grid = new Grid();    RowDefinition row = new RowDefinition();    ColumnDefinition column = new ColumnDefinition();    ColumnDefinition column2 = new ColumnDefinition();    ColumnDefinition column3 = new ColumnDefinition();    Label label = new Label();    label.Content = Books[i].Titel;    downGrid.RowDefinitions.Add(row);    grid.ColumnDefinitions.Add(column);    grid.ColumnDefinitions.Add(column2);    grid.ColumnDefinitions.Add(column3);    Grid.SetRow(label, i);    Grid.SetColumn(label, 0);    Grid.SetRow(grid, i);    upperGrid.Children.Add(grid);    grid.Children.Add(label);    grid.MouseLeftButtonDown += (sen, evg) =>    {       Label lbl = grid.Children.OfType<Label>().FirstOrDefault(k => .Name=="label");       string result = lbl?.Name;       Console.WriteLine(result);    };}