我有一个非常简单的数据库,其中包含两个表,一个代表书籍,另一个代表流派。我已经使用实体框架模型第一代来创建它,现在我想在 WPF Datagrid 中表示它。Datagrid 应该将书的类型显示为 Combobox 列,但我无法正确绑定它。
<Window x:Class="TestApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestApp"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<ObjectDataProvider IsAsynchronous="True" x:Key="BookDataProvider" ObjectType="{x:Type local:BookDataProvider}">
</ObjectDataProvider>
<ObjectDataProvider x:Key="Books" ObjectInstance="{StaticResource BookDataProvider}" MethodName="GetAllBooks"></ObjectDataProvider>
<ObjectDataProvider x:Key="GenreDataProvider" ObjectType="{x:Type local:GenreDataProvider}" IsAsynchronous="True">
</ObjectDataProvider>
<ObjectDataProvider x:Key="Genres" ObjectInstance="{StaticResource GenreDataProvider}" MethodName="GetAllGenres"></ObjectDataProvider>
</Window.Resources>
<Grid DataContext="{Binding Source={StaticResource Books}}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="179*" />
<ColumnDefinition Width="32*" />
<ColumnDefinition Width="292*" />
</Grid.ColumnDefinitions>
<DataGrid AutoGenerateColumns="False" Grid.ColumnSpan="3" Height="311" HorizontalAlignment="Left" Name="dataGrid1" VerticalAlignment="Top" Width="503" SelectionChanged="dataGrid1_SelectionChanged" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTextColumn Header="Title" Binding="{Binding Title}" />
<DataGridTextColumn Header="ISBN" Binding="{Binding ISBN}"/>
<DataGridTextColumn Header="Author" Binding="{Binding Author_AuthorName}"/>
<DataGridComboBoxColumn Visibility="Visible" IsReadOnly="False" Header="Genre" SelectedItemBinding="{Binding Genre}" SelectedValuePath="Genre" DisplayMemberPath="Name" ItemsSource="{Binding Source={StaticResource Genres}}"/>
</DataGrid.Columns>
</DataGrid>
</Grid>
这显示了组合框中的流派列表,但是当我运行应用程序时,我无法让它显示每本书的正确流派。