Question

我在Silverlight中有用户控件，它有一个按钮点击事件。当我将该用户控件添加到页面时，单击事件不会触发。还有什么我需要做的吗？

更新用户控件本身会触发click事件。在页面内部时，它不会页

<navigation:Page x:Class="RadControlsSilverlightApp2.Page1" 
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
       xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
       mc:Ignorable="d"
       xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"
       d:DesignWidth="640" d:DesignHeight="480"
       Title="Page1 Page" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" 

       xmlns:my1="clr-namespace:TestSilverLight.UserControls;assembly=TestSilverLight">
<Grid x:Name="LayoutRoot">
    <sdk:Label Height="28" HorizontalAlignment="Left" Margin="101,38,0,0" Name="label1" VerticalAlignment="Top" Width="120" Content="Test page" />

    <my1:Top10Programs HorizontalAlignment="Left" Margin="335,71,0,0" Name="top10Programs1" VerticalAlignment="Top" />
</Grid>

用户控制

<UserControl x:Class="RadControlsSilverlightApp2.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" BorderThickness="1"  xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">

Answer 1

您是否在主页中处理的usercontrol中引发了一个事件？

UserControl XAML

<Grid x:Name="LayoutRoot" Background="White" Height="133">
    <sdk:Label Height="18" HorizontalAlignment="Left" Margin="12,31,0,0" Name="label1" VerticalAlignment="Top" Width="58" Content="Name"  />
    <sdk:Label Content="Password" Height="18" HorizontalAlignment="Left" Margin="12,60,0,0" Name="label2" VerticalAlignment="Top" Width="58" />
    <TextBox Height="23" HorizontalAlignment="Left" Margin="89,27,0,0" Name="textBox1" VerticalAlignment="Top" Width="253" />
    <TextBox Height="23" HorizontalAlignment="Left" Margin="89,55,0,0" Name="textBox2" VerticalAlignment="Top" Width="253" />
    <Button Content="Login" Height="23" HorizontalAlignment="Left" Margin="161,101,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
</Grid>

后面的UserControl代码

public class userNameEventArgs : EventArgs
{
    public string userName{get;set;}
}

public partial class LoginBox : UserControl
{
    public event EventHandler<userNameEventArgs> LoggedIn;

    public LoginBox()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, RoutedEventArgs e)
    {
        LoggedIn(this, new userNameEventArgs(){userName=textBox1.Text});
    }
}

主页XAML

<Grid x:Name="LayoutRoot" Background="White">
    <Button Content="Main Page" Height="23" HorizontalAlignment="Left" Margin="36,50,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
    <local:LoginBox Margin="100,122,179,223" LoggedIn="LoginBox_LoggedIn" />
    <TextBlock Height="23" HorizontalAlignment="Left" Margin="36,376,0,0" Name="textBlock1" Text="TextBlock" VerticalAlignment="Top" Width="94" />
</Grid>

主页代码隐藏

public partial class MainPage : UserControl
{
    public MainPage()
    {
        // Required to initialize variables
        InitializeComponent();
    }

    private void button1_Click(object sender, RoutedEventArgs e)
    {
        MessageBox.Show("Mainpage pressed!!");
    }

    private void LoginBox_LoggedIn(object sender, userNameEventArgs e)
    {
        textBlock1.Text = e.userName;
    }
}

这样，当单击用户控件上的按钮时，可以更新主页面上的文本块。它引发了在主页上处理的事件。 EventArgs在用户控件和主页之间传输信息。

希望这有帮助。

单击Silverlight用户控件中的事件

1 个答案: