WPF按钮没有'；不执行命令
我有一个WPF按钮没有'；不执行命令,wpf,xaml,button,event-handling,listviewitem,Wpf,Xaml,Button,Event Handling,Listviewitem,我有一个ListViewItem，它附加了一个Eventhandler，在ListViewItem的ControlTemplate中有一个按钮，它做一些不同的事情。但是如果我单击按钮，行为就像我单击了列表视图项 <Button FontSize="7" Content="X" Grid.Column="1" Grid.Row="0" Command="{Binding DataContext.DeleteButtonCommand, RelativeSource={ Re
ListViewItemEventhandlerListViewItemControlTemplate按钮，它做一些不同的事情。但是如果我单击按钮
，行为就像我单击了列表视图项
<Button FontSize="7" Content="X" Grid.Column="1" Grid.Row="0"
Command="{Binding DataContext.DeleteButtonCommand, RelativeSource={
RelativeSource AncestorType={x:Type Window}}}" CommandParameter="{Binding ItemId}"/>
任命概述。xaml:
<Window.Resources>
<Style TargetType="{x:Type ListViewItem}" BasedOn="{StaticResource NormalListViewItem}">
<EventSetter Event="PreviewMouseLeftButtonDown"
Handler="ListViewItem_PreviewMouseLeftButtonDown" />
</Style>
</Window.Resources>
<!--Style für die normalen ListViewItems-->
<Style x:Key="NormalListViewItem" TargetType="{x:Type ListViewItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Border BorderBrush="#5076A7" BorderThickness="1">
<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#FFFFFF" Offset="0.0"/>
<GradientStop Color="#FFFEB603" Offset="1.0"/>
</LinearGradientBrush>
</Border.Background>
<StackPanel TextElement.FontFamily="Segoe UI" TextElement.FontSize="12">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="15"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Name="Betreff" Padding="3,0,0,0" Text="{Binding Betreff}" TextTrimming="CharacterEllipsis" Grid.Column="0" Grid.Row="0"/>
<Button Grid.Column="1" Grid.Row="0" Style="{StaticResource ListViewItemButton}"/>
private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var item = sender as ListViewItem;
if (item != null)
{
AppointmentOverviewViewModel apvm = this.DataContext as AppointmentOverviewViewModel;
apvm.editAppointment(item);
}
}
<!--DataTemplate für die normalen ListViewItems-->
<DataTemplate DataType="{x:Type local:SCSMAppointment}">
<Border BorderBrush="#5076A7" BorderThickness="1" PreviewMouseLeftButtonDown="ListViewItem_MouseLeftDown">
<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#FFFFFF" Offset="0.0"/>
<GradientStop Color="#FFFEB603" Offset="1.0"/>
</LinearGradientBrush>
</Border.Background>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<DockPanel Grid.Row="0">
<Button FontSize="7" Content="X" DockPanel.Dock="Right" Width="15"
Command="{Binding DataContext.DeleteButtonCommand, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"
CommandParameter="{Binding ItemId}"/>
<TextBlock Name="Betreff" Padding="3,0,0,0" Text="{Binding Betreff}" TextTrimming="CharacterEllipsis" />
</DockPanel>
<StackPanel Orientation="Horizontal" Grid.Row="1">
<TextBlock Padding="3,0,0,0" Text="{Binding Kunde}"/>
<TextBlock Padding="3,0,0,0" Text="|"/>
<TextBlock Padding="3,0,0,0" Text="{Binding IncidentId}"/>
</StackPanel>
<StackPanel Orientation="Horizontal" Grid.Row="2">
<TextBlock FontWeight="Bold" Padding="3,0,0,0" Text="{Binding Ort}"/>
<TextBlock Padding="3,0,0,0" Text="("/>
<TextBlock Text="{Binding Alternative}"/>
<TextBlock Text=")"/>
</StackPanel>
</Grid>
</Border>
</DataTemplate>
当我在AppointOverview.xaml的窗口中有完整的列表视图项
样式
时，它就起作用了。但我不喜欢这样，因为这样会有点违背Styles.xaml的目的。另外，我没有为按钮设置样式
，只是在按钮
内设置了所有的样式。但这是非常基本的，现在我需要更复杂的样式
，所以我想创建一个单独的样式
<Button FontSize="7" Content="X" Grid.Column="1" Grid.Row="0"
Command="{Binding DataContext.DeleteButtonCommand, RelativeSource={
RelativeSource AncestorType={x:Type Window}}}" CommandParameter="{Binding ItemId}"/>
样式.xaml
<Window.Resources>
<Style TargetType="{x:Type ListViewItem}" BasedOn="{StaticResource NormalListViewItem}">
<EventSetter Event="PreviewMouseLeftButtonDown"
Handler="ListViewItem_PreviewMouseLeftButtonDown" />
</Style>
</Window.Resources>
<!--Style für die normalen ListViewItems-->
<Style x:Key="NormalListViewItem" TargetType="{x:Type ListViewItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Border BorderBrush="#5076A7" BorderThickness="1">
<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#FFFFFF" Offset="0.0"/>
<GradientStop Color="#FFFEB603" Offset="1.0"/>
</LinearGradientBrush>
</Border.Background>
<StackPanel TextElement.FontFamily="Segoe UI" TextElement.FontSize="12">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="15"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Name="Betreff" Padding="3,0,0,0" Text="{Binding Betreff}" TextTrimming="CharacterEllipsis" Grid.Column="0" Grid.Row="0"/>
<Button Grid.Column="1" Grid.Row="0" Style="{StaticResource ListViewItemButton}"/>
private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var item = sender as ListViewItem;
if (item != null)
{
AppointmentOverviewViewModel apvm = this.DataContext as AppointmentOverviewViewModel;
apvm.editAppointment(item);
}
}
<!--DataTemplate für die normalen ListViewItems-->
<DataTemplate DataType="{x:Type local:SCSMAppointment}">
<Border BorderBrush="#5076A7" BorderThickness="1" PreviewMouseLeftButtonDown="ListViewItem_MouseLeftDown">
<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="#FFFFFF" Offset="0.0"/>
<GradientStop Color="#FFFEB603" Offset="1.0"/>
</LinearGradientBrush>
</Border.Background>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<DockPanel Grid.Row="0">
<Button FontSize="7" Content="X" DockPanel.Dock="Right" Width="15"
Command="{Binding DataContext.DeleteButtonCommand, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"
CommandParameter="{Binding ItemId}"/>
<TextBlock Name="Betreff" Padding="3,0,0,0" Text="{Binding Betreff}" TextTrimming="CharacterEllipsis" />
</DockPanel>
<StackPanel Orientation="Horizontal" Grid.Row="1">
<TextBlock Padding="3,0,0,0" Text="{Binding Kunde}"/>
<TextBlock Padding="3,0,0,0" Text="|"/>
<TextBlock Padding="3,0,0,0" Text="{Binding IncidentId}"/>
</StackPanel>
<StackPanel Orientation="Horizontal" Grid.Row="2">
<TextBlock FontWeight="Bold" Padding="3,0,0,0" Text="{Binding Ort}"/>
<TextBlock Padding="3,0,0,0" Text="("/>
<TextBlock Text="{Binding Alternative}"/>
<TextBlock Text=")"/>
</StackPanel>
</Grid>
</Border>
</DataTemplate>
很明显，您的XAML不正确。A主要用于指定控件的可视结构和行为方面，该控件可在控件的多个实例之间共享。在简单的英语中，这意味着它们用于更改控件的默认外观。如果这不是你正在做的，那么你不应该使用它们
另一方面，s描述数据对象的可视结构，因此您应该声明DataTemplate
s来定义数据的外观，而不是使用ControlTemplate
s。因此，在继续使用WPF之前，我建议您阅读MSDN上的页面，这将使您更好地理解
更新项目后，您的问题可能会自行解决，但如果问题没有解决，请返回此处，用新的XAML编辑您的问题。为什么要对列表视图项使用控制模板
？当然，您应该在设置为ItemTemplate
属性的DataTemplate
中声明数据对象的外观。我不确定。我是WPF/模板的新手，到目前为止，这一直对我有效。我只是想知道为什么按钮停止工作。我已经更新了我的项目。但是现在只有ControlTemplate
可见。因此，只更改了背景
，但没有可见的数据
。同样，您不应该使用控制模板
。我为您提供了几个链接来帮助您，但您似乎完全忽略了它们，因此我不确定是否值得再回复您的评论。您无法在此网站上学习WPF。。。那是你的工作。很抱歉我要求你快点。但是现在我已经把所有东西都放进了一个数据模板
，但是当我点击按钮
时，行为就像点击站点
m。如果我禁用EventHandler
，它会工作。