我有一个树视图。它绑定到称为 Nodes 的 ObservableCollection。工具提示上的绑定数据未显示:
<controls:TreeViewEx BorderThickness="0"
ItemsSource="{Binding Nodes}"
SelectedItemEx="{Binding SelectedTreeNode, Mode=TwoWay}">
<controls:TreeViewEx.ToolTip>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image Grid.Row="0"
Grid.Column="0"
Source="/FMG.UI.WPF;component/Media/Images/job_128.png"
Height="16"
Width="16"/>
<TextBox Grid.Row="0"
Grid.Column="1"
Text="Job: "
FontWeight="Bold"/>
<TextBox Grid.Row="0"
Grid.Column="2"
Text="{Binding ToolTipHeader}"/>
<Border Grid.Row="1"
Grid.Column="0"
Grid.ColumnSpan="3"
Height="2"
BorderBrush="Gray"/>
<TextBox Grid.Row="2"
Grid.Column="0"
Grid.ColumnSpan="3"
Text="{Binding ToolTipDetails}"/>
</Grid>
</controls:TreeViewEx.ToolTip>
</controls:TreeViewEx>
工具提示弹出,但 ToolTipHeader 和 ToolTipDetails 为空白。输出窗口说它在视图模型上找不到它们。如何使绑定看起来在节点上,而不是视图模型上?