我有有三列的网格：
- 友好名称
- 洲名
- 国家名称
第一列是文本框列"可编辑"。第二列是显示大陆列表的组合框。第三列是一个组合框，它根据第二列中选择的大陆显示国家/地区列表。我想为这些列实现单击。我尝试了此链接中给出的解决方案在 WPF 数据网格中单击"编辑"
但这仅适用于第一列，而不适用于其他两列（DataGridTemplateColumn）。
这怎么可能。请指教。下面给出了示例 XAML 和数据说明。
<DataGrid Grid.Row="1" VerticalAlignment="Top"
ItemsSource="{Binding Path=GeographyData,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
Style="{StaticResource DataGridStyleNormal}">
<DataGrid.Columns>
<DataGridTextColumn Width="*" Header="Friendly name" Binding="{Binding Path=FriendlyName,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"/>
<!--FilterDef -->
<DataGridTemplateColumn Width="*"
Header="Continents">
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox SelectedValue="{Binding ContinentId, Mode=TwoWay}"
SelectedValuePath="ID"
DisplayMemberPath="Name"
ItemsSource="{Binding Path=DataContext.ContinentsAndCountries,Mode=OneWay,UpdateSourceTrigger=PropertyChanged,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}}"/>
</DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock>
<TextBlock.Text>
<MultiBinding Converter="{StaticResource ContinentCaptionConverter}">
<Binding Path="ContinentId"/>
<Binding Path="DataContext.ContinentsAndCountries" RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<!--Level-->
<DataGridTemplateColumn Width="*"
Header="Countries">
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox SelectedValue="{Binding CountryId, Mode=TwoWay}"
SelectedValuePath="ID"
DisplayMemberPath="Name">
<ComboBox.ItemsSource>
<MultiBinding Converter="{StaticResource CountryValuesConverter}">
<Binding Path="DataContext.ContinentsAndCountries" RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}"/>
<Binding Path="ContinentId"/>
</MultiBinding>
</ComboBox.ItemsSource>
</ComboBox>
</DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock>
<TextBlock.Text>
<MultiBinding Converter="{StaticResource CountryCaptionConverter}">
<Binding Path="DataContext.ContinentsAndCountries" RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type DataGrid}}"/>
<Binding Path="ContinentId"/>
<Binding Path="CountryId"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
注意："大陆和国家"数据是主详细信息数据的可观察集合。
- 吉里哈
我通过设置组合框加载事件来做到这一点
private void DataGridComboboxTemplate_Loaded(object sender, RoutedEventArgs e)
{
if (sender != null)
{
ComboBox cmb = sender as ComboBox;
cmb.IsDropDownOpen = true;
}
}
对不起他死灵;我终于想出了如何制作真正的一键式用户体验。您必须截获 DataGridCell 的 OnGotFocus 事件，将单元格的模式设置为 IsEdit，然后在 CellEditing 模板中截获 actor 控件的 Loaded 事件：
<Window.Resources>
<Style
x:Key="AutoEditModeOnClick"
TargetType="{x:Type DataGridCell}">
<EventSetter Event="GotFocus" Handler="DataGridCell_OnGotFocus" />
</Style>
</Window.Resources>
<DataGrid.Columns>
<DataGridTemplateColumn
CellStyle="{StaticResource AutoEditModeOnClick}"
Header="Score">
<!-- Example with ComboBox -->
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<!-- Some more XAML -->
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<!-- Some more XAML -->
<ComboBox
DisplayMemberPath="Description"
SelectedValuePath="RecordID"
SelectedValue="{Binding Score,
TargetNullValue=0,
UpdateSourceTrigger=PropertyChanged}"
ItemsSource="{Binding DataContext.ScoreOptions,
RelativeSource={RelativeSource
AncestorType={x:Type DataGrid}}}"
Loaded="Combobox_Loaded"/>
</DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn
CellStyle="{StaticResource AutoEditModeOnClick}"
Header="Comment">
<!-- Example with TextBox -->
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<!-- Some more XAML -->
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<!-- Some more XAML -->
<TextBox
Loaded="TextBox_Loaded"
Text="{Binding Comment,
UpdateSourceTrigger=LostFocus}"/>
</DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
在代码隐藏中，需要三个处理程序;一个用于单元格，一个用于每种类型的控件（ComboBox、TextBox）：
/// <summary>
/// Skips the 'DataGridCell.Focus' step and goes straight into IsEditing
/// </summary>
private void DataGridCell_OnGotFocus(object sender, RoutedEventArgs e)
{
DataGridCell cell = sender as DataGridCell;
cell.IsEditing = true;
}
/// <summary>
/// Skips the 'IsEditing' step and goes straight into IsDropDownOpen
/// </summary>
private void Combobox_Loaded(object sender, RoutedEventArgs e)
{
ComboBox comboBox = sender as ComboBox;
comboBox.IsDropDownOpen = true;
}
/// <summary>
/// Skips the 'IsEditing' step and goes straight into Focus
/// </summary>
private void TextBox_Loaded(object sender, RoutedEventArgs e)
{
TextBox textBox = sender as TextBox;
textBox.Focus();
}