WPF 命令按钮 ListBoxItems
我有一个如下定义的列表框：
<ListBox x:Name="lstMedias" ItemsSource="{Binding Medias}" Width="Auto" Height="Auto">
<ListBox.ItemTemplate>
<DataTemplate>
<Button Content="{Binding Name}" Tag="{Binding Name}" Click="Button_Click" Command="{Binding Path=LoadSimpleMoviePopupCommand}">
<Button.Resources>
<Converters:LoadMovieMultiConverter x:Key="LoadMovieMultiConverter" />
</Button.Resources>
<Button.CommandParameter>
<MultiBinding Converter="{StaticResource LoadMovieMultiConverter}">
<MultiBinding.Bindings>
<Binding ElementName="DragDropCanvas" />
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding.Bindings>
</MultiBinding>
</Button.CommandParameter>
</Button>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
当尝试调用命令 LoadSimpleMoviePopupCommand 时，不会调用命令，但在调用单击事件时，会引发事件。
你知道为什么吗？这是正常行为吗？我们是否必须像 ListBoxItem doubleclick 那样欺骗？
I Have a listbox defined like below :
<ListBox x:Name="lstMedias" ItemsSource="{Binding Medias}" Width="Auto" Height="Auto">
<ListBox.ItemTemplate>
<DataTemplate>
<Button Content="{Binding Name}" Tag="{Binding Name}" Click="Button_Click" Command="{Binding Path=LoadSimpleMoviePopupCommand}">
<Button.Resources>
<Converters:LoadMovieMultiConverter x:Key="LoadMovieMultiConverter" />
</Button.Resources>
<Button.CommandParameter>
<MultiBinding Converter="{StaticResource LoadMovieMultiConverter}">
<MultiBinding.Bindings>
<Binding ElementName="DragDropCanvas" />
<Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
</MultiBinding.Bindings>
</MultiBinding>
</Button.CommandParameter>
</Button>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
When Trying to call command LoadSimpleMoviePopupCommand, command is not called, but when calling click event, event is raised.
Do You have an idea why ? It is a normal behavior ? Do we have to trick like ListBoxItem doubleclick ?
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可能是因为绑定失败。检查VS的输出窗口，看看是否有绑定错误。我怀疑
LoadSimpleMoviePopupCommand属性不在您的数据项类（即您的Media类）上。Probably because the binding failed. Check the output window of VS and see if there are any binding errors. I suspect the
LoadSimpleMoviePopupCommandproperty is not on your data item class (ie. yourMediaclass).遇到了同样的问题，尝试一下，这
很正常，他在列表框中找不到您的命令绑定，因为您
在该列表框中设置了类似的内容，所以他将在数据类型而不是视图模型中查找该绑定（我假设： ）
had the same problem, try this
it's quite normal, he can't find your command binding inside the listbox because you set something like
in that listbox so he'll be looking for that binding inside the datatype and not the viewmodel (I assume :)