Combobox中的数据绑定

本文介绍了Combobox中的数据绑定的处理方法，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小编来一起学习吧！ 问题描述

我将数据库表的主键绑定到组合框的selectedIndex。问题发生在主键从1开始，而selectedIndex从0开始接受。我的意思是，当我想在数据库中看到ID = 1的项目时，由于它在索引为0的combobox中被列为第一个元素，它显示第二个元素在列表中，在组合框中的ID = 1。任何人都可以帮助我解决这个问题？

I binded a database table's primary key to the selectedIndex of a combobox. the problem occurs where the primary key starts from 1 but selectedIndex accepts from 0. I mean, when I want to see the item with ID=1 in database, since it's listed as first element in combobox with index 0, it displays the second element in the list, which is considered with ID=1 in the combobox. Can anyone help me on solving this problem?

提前感谢。 这里是我的组合框：

Thanks in advance. here's my combobox:

<ComboBox SelectedIndex="{Binding SC.User1.UserID, UpdateSourceTrigger=PropertyChanged }" IsSynchronizedWithCurrentItem="True" x:Name="proxyResponsibleUserCmb" ItemsSource="{Binding Users, Mode=OneTime}" SelectedItem="{Binding SC.User1.FullName, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" Validation.ErrorTemplate="{x:Null}" Height="23" VerticalAlignment="Top" HorizontalAlignment="Left" Width="118" Margin="184,3,0,0" Grid.Row="0" Grid.Column="1"/>

推荐答案

使用ComboBox的 SelectedValuePath 和 DisplayMemberPath ，并使用SelectedValue而不是SelectedItem设置默认项目？

What about using the ComboBox's SelectedValuePath and DisplayMemberPath, and setting your default item with SelectedValue instead of SelectedItem?

<ComboBox x:Name="proxyResponsibleUserCmb" SelectedValuePath="{Binding UserID}" DisplayMemberPath="{Binding FullName}" SelectedValue="{Binding SC.User1.UserId, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" ItemsSource="{Binding Users, Mode=OneTime}" />