WP7中Silverlight工具包的问题

Question

我已将Silverlight工具包添加到我的WP7应用程序中。

<Button Content="Country">
    <toolkit:ContextMenuService.ContextMenu>
        <toolkit:ContextMenu>
            <toolkit:MenuItem Header="England" Tag="1" Click="set_country" />
            <toolkit:MenuItem Header="Germany" Tag="2" Click="set_country" />
            <toolkit:MenuItem Header="France" Tag="3" Click="set_country" />
            <toolkit:MenuItem Header="Spain" Tag="4" Click="set_country" />
            <toolkit:MenuItem Header="Italy" Tag="5" Click="set_country" />
        </toolkit:ContextMenu>
    </toolkit:ContextMenuService.ContextMenu>
</Button>

经办人：

private void set_country(object sender, MouseEventArgs e)
{
    var menuItem = (MenuItem)sender;
    var tag = menuItem.Tag.ToString();
    MessageBox.Show(tag);
}

但这是MainPage.g.i.cs:中这个字符串的问题

this.LayoutRoot = ((System.Windows.Controls.Grid)(this.FindName("LayoutRoot")));

错误：未能分配给属性"Microsoft.Phone.Controls.MenuItem.Click"。[Line:31位置：72]

Answer 1

您的事件处理程序签名错误：

private void MenuItem_Click(object sender, RoutedEventArgs e)
{
    MenuItem menuItem = (MenuItem)sender;
    MessageBox.Show("You chose to  " + menuItem.Header.ToString(),"Result",MessageBoxButton.OK);
}