wpf WPF按钮单击事件不起作用
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原文地址: http://stackoverflow.com/questions/25110042/
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WPF Button Click Event not working
提问by Redaa
I have a button that contains an Image inside a grid, my problem is that I can't make the button Clickevent work.
我有一个在网格中包含图像的按钮，我的问题是我无法使按钮Click事件工作。
My XAML code:
我的 XAML 代码：
....
<TabControl TabStripPlacement="Left">
<TabItem Loaded="ListProductsLoaded" Width="185" Height="100" Header="Lister les Produits">
<Grid Background="#FFE5E5E5">
<ListView Name="ProductsListView" IsHitTestVisible="False">
<ListView.View>
<GridView>
<GridViewColumn Width="120" Header="Reference" DisplayMemberBinding="{Binding ProductReference}"></GridViewColumn>
<GridViewColumn Width="150" Header="Nom" DisplayMemberBinding="{Binding ProductName}"></GridViewColumn>
<GridViewColumn Width="120" Header="Photo" >
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button PreviewMouseLeftButtonDown="ImageButtonLeftMouseButtonDown" Name="ImageButton" Width="120" Height="120" Click="ImageButtonClicked">
<Image Width="119" Height="119" Name="ProdImage" Source="{Binding ProductImage}"></Image>
</Button>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</Grid>
</TabItem>
</TabControl>
....
As you can see I used two events, PreviewMouseLeftButtonDownevent and Click event, I used PreviewMouseLeftButtonDowndue to a solution I saw in a stackoverflow question but it didn't work. Both events methods display a MessageBox
如您所见，我使用了两个事件，PreviewMouseLeftButtonDown事件和单击事件，PreviewMouseLeftButtonDown由于我在 stackoverflow 问题中看到的一个解决方案，我使用了它，但它不起作用。两种事件方法都显示一个MessageBox
private void ImageButtonClicked(object sender, RoutedEventArgs e)
{
MessageBox.Show(this, "clicked image button");
}
private void ImageButtonLeftMouseButtonDown(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("test clicked");
}
If anyone encountered this problem before please help me solve it, I searched for a solution without success. Thanks in advance.
如果之前有人遇到过这个问题，请帮我解决，我搜索了一个没有成功的解决方案。提前致谢。
Edit: Even if I use a normal button: No image in it, it doesn't work.
编辑：即使我使用普通按钮：其中没有图像，它也不起作用。
Solution : Actually, i set the Option IsHitTestVisibleof the TabControlto falseand that disabled all Clickevents… sorry everybody.
解决方法：其实，我的选项设置IsHitTestVisible的TabControl，以false和禁用所有Click事件...对不起大家。
回答by Alexander Bell
You can remove all event subscription from XAML and put it in code behind using compact syntax (just a single line of code) as shown below:
您可以从 XAML 中删除所有事件订阅，并使用紧凑的语法（仅一行代码）将其放入代码中，如下所示：
ImageButton.Click += (s, e) => { MessageBox.Show("test button clicked"); };
Also, REMOVEyour event handling proc:
另外，删除您的事件处理过程：
private void ImageButtonClicked(object sender, RoutedEventArgs e)
{
MessageBox.Show(this, "clicked image button");
}
In addition to this, another event handler for the same button (PreviewMouseLeftButtonDown="ImageButtonLeftMouseButtonDown"in XAML) seems redundant – you can remove it with corresponding event handling proc.
除此之外，同一个按钮的另一个事件处理程序（PreviewMouseLeftButtonDown="ImageButtonLeftMouseButtonDown"在 XAML 中）似乎是多余的——您可以使用相应的事件处理程序删除它。
So, the code snippet should look like:
因此，代码片段应如下所示：
MainWindow()
{
InitializeComponent();
ImageButton.Click += (s, e) => { MessageBox.Show("test button clicked"); };
// ... the rest of the code...
Pertinent to your case (Buttoncontrol in ListViewtemplate), refer to this article: WPF ListView with buttons on each line
与您的情况相关（模板中的Button控件ListView），请参阅这篇文章：WPF ListView with button on each line
回答by pathDongle
Your Click event is named Test_OnClickin codebehind but in XAML you refer to it as Click="ImageButtonClicked"so the event does not fire. It needs to be Click="Test_OnClick"
您的 Click 事件Test_OnClick在代码隐藏中命名，但在 XAML 中您引用它，Click="ImageButtonClicked"因此该事件不会触发。它需要是Click="Test_OnClick"
回答by Sanjaya
try using Tap event without using click event.Same function in both events,
尝试使用点击事件而不使用点击事件。两个事件中的功能相同，
