Question

我已使用

在XAML中成功创建了一个下拉列表

.XAML
    <Grid>
        <DockPanel>
            <Menu>
                <MenuItem Header="Menu">
                    <MenuItem Header="{Binding Path=ddlXferData1}" Command="{Binding Path=XferData}" Click="MenuItem_Click" IsCheckable="True"/>
                    <MenuItem Header="{Binding Path=ddlXferData2}" Command="{Binding Path=XferData}" Click="MenuItem_Click" IsCheckable="True"/>
                    <MenuItem Header="{Binding Path=ddlXferData3}" Command="{Binding Path=XferData}" Click="MenuItem_Click" IsCheckable="True"/>
                    <Separator />
                    <MenuItem Header="{Binding Path=ddlSkillData1}" Command="{Binding Path=SkillData}" Click="MenuItem_Click" IsCheckable="True"/>
                    <MenuItem Header="{Binding Path=ddlSkillData2}" Command="{Binding Path=SkillData}" Click="MenuItem_Click" IsCheckable="True"/>
                    <MenuItem Header="{Binding Path=ddlSkillData3}" Command="{Binding Path=SkillData}" Click="MenuItem_Click" IsCheckable="True"/>
                </MenuItem>
            </Menu>

        </DockPanel>
    </Grid>

.xaml.cs
        private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            MenuItem mnItem = (MenuItem) e.OriginalSource;
            this.Model.menuItemSelected = (string) mnItem.Header;
        }

从这里开始，命令XferData和SkillData用于引用基本上根据this.Model.menuItemSelected

执行某些操作的事件处理程序方法。

所有这些都正常工作，以及我需要它的工作方式。

但是，现在我需要动态构建或创建菜单（下拉列表）选项。

我不是100％确定设计和实施动态下拉列表的最佳行动方案是什么：

我应该放入.xaml

<Button Name="MenuButton" Content="{Binding Path=btnMenu}" Command="{Binding Path=Menu}" Click="button1_Click" .../>

并在.xaml.cs中构建带选项的菜单

 private void button1_Click(object sender, RoutedEventArgs e)
    {
        // Make the main menu.
        Menu mainMenu = new Menu();
        DockPanel dockPanel = new DockPanel();

        dockPanel.Children.Add(mainMenu);
        mainMenu.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
        mainMenu.VerticalAlignment = System.Windows.VerticalAlignment.Top;

        // Make the menu items.
        MenuItem menuItem = new MenuItem();
        .....
    }

或

我应该动态构建XAML吗？

Answer 1

不推荐，但你可以这样做：

//assuming you have Menu named MainMenu and you want to add Menu Item to it and Sub menu item to the item which you have just added
      MenuItem MainItem = new MenuItem();
      MainItem .Header = "Main Item";
      this.MainMenu.Items.Add(MainItem);

      MenuItem SubItem= new MenuItem();
      SubItem.Header = "Sub Item";
      SubItem.Click += new RoutedEventHandler(SubItem_Click);
      MainItem.Items.Add(SubItem);

如何在XAML中动态创建菜单而不是硬编码？

1 个答案: