wpf - 以编程方式将标签添加到网格

Question

嘿，我正在尝试使用以下代码向我的网格添加标签：

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click
  Dim dynamicLabel As New Label()
  Dim g As New Grid

  dynamicLabel.Name = "NewLabel"
  dynamicLabel.Content = "TEST"
  dynamicLabel.Width = 240
  dynamicLabel.Height = 30
  dynamicLabel.Margin = New Thickness(0, 21, 0, 0)
  dynamicLabel.Foreground = New SolidColorBrush(Colors.White)
  dynamicLabel.Background = New SolidColorBrush(Colors.Black)

  Grid.SetRow(dynamicLabel, 0)
  Grid.SetColumn(dynamicLabel, 6)
  g.Children.Add(dynamicLabel)
End Sub

但是，按下按钮后我再也看不到任何东西了……我想念什么？

Answer 1

我通过命名其他网格来更正此问题。我从来没有命名网格，因此这就是为什么.Children.Add永远不会添加到网格中的原因。我尝试了mainGrid.Children.Add（mainGrid是我的父网格的名称），它总是会引发错误，因为这是该部分所需的网格。

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) //Handles Button1.Click
  Dim dynamicLabel As new Label();

  dynamicLabel.Name = "NewLabel";
  dynamicLabel.Content = "TEST";
  dynamicLabel.Width = 240;
  dynamicLabel.Height = 30;
  dynamicLabel.Margin = new Thickness(0, 21, 0, 0);
  dynamicLabel.Foreground = new SolidColorBrush(Colors.White);
  dynamicLabel.Background = new SolidColorBrush(Colors.Black);

  Grid.SetRow(dynamicLabel, 0);
  Grid.SetColumn(dynamicLabel, 0);
  childGrid.Children.Add(dynamicLabel); //'<-changed to grid name in XAML properties
End Sub