我遇到以下问题,我不知道我的错在哪里。 我用DataGridComboBoxColumn指定了一个DataGrid,并设置了一个简单的ElementStyle,它应该为非编辑模板的文本着色。着色起作用,但文本值本身始终是最后编辑的值。设置DataGridComboBoxColumn的ElementStyle打破预期行为
查看image的错误行为。红色文本应该与左侧相同。由于对象是相同的(请参阅GUID)。
我试着将基础样式设置为{x:Static DataGridComboBoxColumn.TextBlockComboBoxStyleKey}并尝试将TargetType设置为DataGridComboBoxColumn + TextBlockComboBox(通过反射)。没有改变任何东西。
我注意到通过Live属性资源管理器DataGridComboBoxColumn + TextBlockComboBox的SelectedItem为左侧网格计算,但不是为右侧网格计算。所以我的假设是设置风格时绑定会中断。
这是WPF DataGrid的已知问题吗?有没有办法解决这个问题,而不使用DataGridTemplateColumn?
要复制我附加的源代码的问题。
MainWindow.xaml
<Window x:Class="DataGridComboBoxStyleError.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:DataGridComboBoxStyleError"
mc:Ignorable="d"
Title="MainWindow" Height="200" Width="750" WindowStartupLocation="CenterScreen">
<Window.Resources>
<CollectionViewSource x:Key="_availableCultures" Source="{Binding Source={x:Static local:MainWindow.AvailableCultures}}" />
<x:Array x:Key="Items" Type="{x:Type local:TestItem}">
<local:TestItem CultureName="de" />
<local:TestItem CultureName="en" />
<local:TestItem CultureName="ru" />
</x:Array>
<Style x:Key="_comboBoxStyle" x:Shared="False" TargetType="{x:Type ComboBox}">
<Setter Property="Foreground" Value="Red" />
</Style>
</Window.Resources>
<StackPanel>
<Grid x:Name="_mainGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Grid.ColumnSpan="2" Text="ItemsSource via StaticResource" HorizontalAlignment="Center" />
<TextBlock Grid.Row="1" Grid.Column="0" Text="Default ElementStyle" HorizontalAlignment="Center" />
<TextBlock Grid.Row="1" Grid.Column="1" Text="Specified ElementStyle" HorizontalAlignment="Center" />
<DataGrid Grid.Row="2" Grid.Column="0" ItemsSource="{StaticResource Items}" CanUserAddRows="False" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Id" Binding="{Binding Id}" />
<DataGridComboBoxColumn ItemsSource="{Binding Source={StaticResource _availableCultures}}" SelectedItemBinding="{Binding Culture}" DisplayMemberPath="NativeName" Header="Culture" Width="*" />
</DataGrid.Columns>
</DataGrid>
<DataGrid Grid.Row="2" Grid.Column="1" ItemsSource="{StaticResource Items}" CanUserAddRows="False" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Id" Binding="{Binding Id}" />
<DataGridComboBoxColumn ItemsSource="{Binding Source={StaticResource _availableCultures}}" SelectedItemBinding="{Binding Culture}" DisplayMemberPath="NativeName" Header="Culture" Width="*" ElementStyle="{StaticResource _comboBoxStyle}" />
</DataGrid.Columns>
</DataGrid>
</Grid>
</StackPanel>
</Window>
MainWindow.xaml.cs
namespace DataGridComboBoxStyleError
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
public static IEnumerable<CultureInfo> AvailableCultures = CultureInfo.GetCultures(CultureTypes.AllCultures);
}
}
TestItem.cs
public class TestItem
{
public CultureInfo Culture { get; set; }
public string CultureName
{
get {
return Culture.TwoLetterISOLanguageName;
}
set {
Culture = CultureInfo.GetCultureInfo(value);
}
}
public string Id { get; } = Guid.NewGuid().ToString();
}
谢谢,这似乎是简单的情况下,但对于指定'ContentTemplate'了'ComboBox'工作(例如前景。)? –
当DataGridComboBoxColumn的功能因任何原因不适合您的需求时,请使用DataGridTemplateColumn。 – mm8
请记住接受问题已解决的答案:https://meta.stackexchange.com/questions/23138/how-to-accept-the-answer-on-stack-overflow – mm8