小编yaf*_*eya的帖子

伙计我想将多行文本输入到DataGridTextColumn中,我可以使用"enter"输入多行字符.但我想像visual studio资源管理器一样使用"shift + enter",这里是我的代码,带有"enter"键.

<DataGridTextColumn Header="Value" Binding="{Binding Value}" Width="*">
  <DataGridTextColumn.ElementStyle>
      <Style TargetType="TextBlock">
         <Setter Property="TextWrapping" Value="Wrap" />
      </Style>
  </DataGridTextColumn.ElementStyle>
  <DataGridTextColumn.EditingElementStyle>
      <Style TargetType="TextBox">
        <Setter Property="TextWrapping" Value="Wrap" />
        <Setter Property="AcceptsReturn" Value="true" />
      </Style>
  </DataGridTextColumn.EditingElementStyle>

我用CellEditingTemplate写了一个DataGrid的usercontrol.此编辑模板的DataTemplate是一个TextBox,光标将通过三次单击进入文本框,如果我想通过双击或单击将光标设置在文本框上,我该怎么办？

这是我的代码:

<Window x:Class="MultiLineEditDataGrid.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:MultiLineEditDataGrid"
    Title="MainWindow" Height="350" Width="525">
<Grid DataContext="{Binding Source={x:Static Application.Current}, Path=CompanyManager}">
    <Grid.RowDefinitions>
        <RowDefinition Height="270"/>
        <RowDefinition Height="30"/>
    </Grid.RowDefinitions>
    <DataGrid ItemsSource="{Binding Companies}" CanUserAddRows="False" AutoGenerateColumns="False">
        <DataGrid.Resources>
            <DataTemplate x:Key="cellTemplate">
                <TextBlock Text="{Binding Description}"/>
            </DataTemplate>
            <DataTemplate x:Key="cellEditingTemplate">
                <local:MultiLineTextBox Text="{Binding Description}"/>
            </DataTemplate>
        </DataGrid.Resources>
        <DataGrid.Columns>
            <DataGridTextColumn Header="Company" Binding="{Binding Name}"/>
            <DataGridTemplateColumn Header="Description" 
                                    CellTemplate="{StaticResource cellTemplate}" 
                                    CellEditingTemplate="{StaticResource cellEditingTemplate}"/>
        </DataGrid.Columns>
    </DataGrid>
    <Button Grid.Row="1" Content="Add" Command="{Binding AddCommand}"/>
</Grid>

MultiLineTextBox是我从文本框继承的TextBox,并重写OnKeyDown方法.

MultiLineTextBox的代码:

public class MultiLineTextBox : TextBox
{
    /// <summary>
    /// On Key Down.
    /// </summary>
    /// <param name="e"></param>
    protected override …

我编写了一个片段来通过c#代码创建自己的DataTemplate.然后我将它添加到datagrid列的编辑模板中.当我调用时object templateContent = tc.CellTemplate.LoadContent ( );,应用程序崩溃,并抛出一个异常,"FrameworkElementFactory必须在此操作的密封模板中.".这是我创建datatemplate的代码.

public override DataTemplate GenerateCellTemplate ( string propertyName )
    {
        DataTemplate template = new DataTemplate ( );
        var textBlockName = string.Format ( "{0}_TextBlock", propertyName );
        FrameworkElementFactory textBoxElement = new FrameworkElementFactory ( typeof ( TextBlock ), textBlockName );
        textBoxElement.SetBinding ( TextBlock.TextProperty, new Binding ( propertyName ) );
        template.VisualTree = textBoxElement;
        Trigger trigger = new Trigger ( );
        return template;
    }