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    2. c# wpf - 不能同时设置 DisplayMemberPath 和 ItemTemplate

      c# wpf - cannot set both DisplayMemberPath and ItemTemplate(c# wpf - 不能同时设置 DisplayMemberPath 和 ItemTemplate)
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              • 本文介绍了c# wpf - 不能同时设置 DisplayMemberPath 和 ItemTemplate的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                我想在 listboxItem 中添加工具提示,但是当有 DisplayMemberPath 时它开始出现问题.错误信息说:不能同时设置 DisplayMemberPath 和 ItemTemplate.当我删除 DisplayMemberPath 时,每个列表项中的工具提示都在工作.但我不想删除 DisplayMemember,因为我需要它.如何解决这个问题?

                I want to add tooltip in listboxItem but it starts problem when there is DisplayMemberPath. Error message said: cannot set both DisplayMemberPath and ItemTemplate. When I removed DisplayMemberPath, tooltip in each list item is working. But i dont want to remove DisplayMemember because i need it. How to solve this problem?

                               <ListBox x:Name="lstToys" Style="{DynamicResource ListBoxStyle1}"  ItemsSource="{Binding Strings}" DisplayMemberPath="Toys" MouseDoubleClick="lstToys_MouseDoubleClick">
                                    <ListBox.ItemTemplate>
                                        <DataTemplate>
                                            <TextBlock Text="{Binding}" ToolTip="Here is a tooltip"/>
                                        </DataTemplate>
                                    </ListBox.ItemTemplate>
                                </ListBox>
                

                推荐答案

                DisplayMemberPath 实际上是单个属性的模板,显示在 TextBlock 中.如果你设置:

                DisplayMemberPath is, in effect, a template for a single property, shown in a TextBlock. If you set:

                <ListBox x:Name="lstToys" Style="{DynamicResource ListBoxStyle1}"  
                         ItemsSource="{Binding Strings}" DisplayMemberPath="Toys">
                </ListBox>
                

                相当于:

                <ListBox x:Name="lstToys" Style="{DynamicResource ListBoxStyle1}"  
                         ItemsSource="{Binding Strings}">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Toys}"/>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>
                

                您可以简单地删除 DisplayMemberPath 路径并使用 DataTemplateBinding 中的值:

                You can simply remove the DisplayMemberPath path and use the value in your DataTemplate's Binding:

                <ListBox x:Name="lstToys" Style="{DynamicResource ListBoxStyle1}"  
                         ItemsSource="{Binding Strings}">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Toys}" ToolTip="Here is a tooltip!"/>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>
                

                编辑

                如果你想设置一个ToolTip但保留DisplayMemberPath,你可以在ItemContainerStyle处进行:

                If you want to set a ToolTip but keep the DisplayMemberPath, you can do it at the ItemContainerStyle:

                <ListBox x:Name="lstToys" Style="{DynamicResource ListBoxStyle1}"  
                         ItemsSource="{Binding Strings}" DisplayMemberPath="Toys">
                    <ListBox.ItemContainerStyle>
                        <Style TargetType="ListBoxItem">
                            <Setter Property="ToolTip" Value="Here's a tooltip!"/>
                        </Style>
                    </ListBox.ItemContainerStyle>
                </ListBox>
                

                我建议不要这样做.请记住,使用 DisplayMemberPath 会阻止您在数据模板中进行任何复杂的绑定.

                I'd advise against it. Remember that use DisplayMemberPath stops you from any complex binding in your data template.

                这篇关于c# wpf - 不能同时设置 DisplayMemberPath 和 ItemTemplate的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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