以编程方式将标签添加到网格

Question

嘿所有我想使用以下代码向网格添加标签：

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，我从未在网格上看到任何内容......我缺少什么？

Answer 1

我通过命名其他网格来纠正这个问题。我从来没有命名网格，因此这就是 .Children.Add 永远不会添加到网格的原因。我试过 mainGrid.Children.Add （mainGrid是我的父网格的名称），它总是会抛出一个错误，因为它是里面的网格所需要的一部分。

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

Answer 2

如果您需要添加按钮或标签（只需将按钮更改为标签）到网格，您可以使用：

internal void FillbtnSubCat(Grid grid)
    {
        var myDefinition = new ColumnDefinition();

        var myButton = new Button();

        Grid.SetColumn(myButton, count);

        myButton.Margin = new Thickness(5, 10, 5, 25);
        myButton.MinWidth = 30;
        myButton.Content = count;

        myButton.Click+= new RoutedEventHandler(Click1);

        myDefinition.Width = new GridLength(68);

        grid.ColumnDefinitions.Add(myDefinition);

        grid.Children.Add(myButton);
        count++;
    }


void Click1(object sender, RoutedEventArgs e)
    {
        var myButton = sender as Button;
        MessageBox.Show(myButton.GetHashCode().ToString());
    }

和XAML

 <ListView Grid.Column="0" Margin="10,10,5,5" Grid.Row="1"  Grid.ColumnSpan="2">
        <Grid Name="Grid1" Height="100" Width="auto">

            </Grid>
    </ListView>

Answer 3

在显示的代码中，您永远不会将新网格添加到窗口中的任何窗口/控件。

Answer 4

gride是动态Form.xaml窗口中我的网格的名称。它创建按钮并添加到gride，然后在按钮单击事件中，它通过单击按钮创建标签。

  public partial class DynamicForm : Window
    {

    Label lb = new Label();


  public DynamicForm()
    {
        InitializeComponent();

        Button dynamicButton = new Button();
        dynamicButton.Content = "Click me";
        Grid.SetRow(dynamicButton, 0);
        Grid.SetColumn(dynamicButton, 0);

        gride.Children.Add(dynamicButton);

        dynamicButton.Click += button1_Click;


    }

    private void button1_Click(object sender, RoutedEventArgs e)
    {


       Label dynamicLabel = 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, 1);
       Grid.SetColumn(dynamicLabel, 0);

      gride.Children.Add(dynamicLabel);


    }

}