数据栏中的WPF设置工具提示

Question

如何绑定驻留在数据板中的控件的工具提示。

<UserControl.Resources>
    <DataTemplate x:Key="PositionAdded">`enter code here`
        <materialDesign:PackIcon x:Name="PositionInd"  Kind="TimerSandEmpty" ToolTip="{Binding XXXX }" HorizontalAlignment="Center"  Foreground="DarkOrange" Width="20" Height="20">
            <materialDesign:PackIcon.DataContext>
                <local:TestClass />
            </materialDesign:PackIcon.DataContext>
        </materialDesign:PackIcon>
    </DataTemplate>
</UserControl.Resources>

我想绑定上面图标的工具提示，动态地说是从侧列值。因此，工具提示应该显示为"4至9“的特定图标。

输出

下面是dataGrid结构：

<DataGrid x:Name="DataGridInvRecord"  SelectedItem="{Binding item,Mode=TwoWay}"  AutoGenerateColumns="False" IsReadOnly="True" >
    <DataGrid.Columns>
        <DataGridTextColumn  Header="#" Binding="{Binding SLNum}" />
        <DataGridTextColumn Header="Matterial" Binding="{Binding FPN}" />                       
        <DataGridTextColumn Header="Category" Binding="{Binding Category}" />
        <DataGridTextColumn Header="Product" Binding="{Binding Product}" />
        <DataGridTextColumn Header="Base" Binding="{Binding Base}"/>
        <DataGridTextColumn Header="Size" Binding="{Binding Size}" />
        <DataGridTextColumn Header="Available" Binding="{Binding Available}" />
        <DataGridTextColumn Visibility="Visible" Header="MinRange" Binding="{Binding MinRange}" />
        <DataGridTextColumn Visibility="Visible" Header="MaxRange" Binding="{Binding MaxRange}" />
        <DataGridTemplateColumn Header="Position" CellTemplateSelector="{StaticResource PositionTemplateSelector}" />
    </DataGrid.Columns>
</DataGrid>

非常欢迎使用完整代码的建议。谢谢！！

Answer 1

ToolTips不是可视化树中它们关联控件的子控件，因此不继承DataContext。要绑定工具提示，需要通过中间代理类绑定，如这个职位中所解释的那样。

Answer 2

数据板应该将项目设置为DataContext

<DataTemplate x:Key="PositionAdded">
    <materialDesign:PackIcon Kind="TimerSandEmpty" HorizontalAlignment="Center" Foreground="DarkOrange" Width="20" Height="20">
        <materialDesign:PackIcon.ToolTip>
            <MultiBinding StringFormat="{0}-{1}">
                <Binding Path="MinRange"/>
                <Binding Path="MaxRange"/>
            </MultiBinding>
        </materialDesign:PackIcon.ToolTip>
    </materialDesign:PackIcon>
</DataTemplate>