c# - 如何将 GridView 作为 ConverterParameter 传递

Question

我正在尝试将 ListView 或 GridView 作为 ConverterParameter 传递但是，在 Converter 例程中，参数以字符串类型出现

下面是 XAML List View 和 Converter 类的部分。

非常感谢任何帮助。谢谢!!!

    <ListView Name="SeqDtStDataListView1" Grid.Row="1" 
        DataContext="{Binding Path=DisplayDT[0], Converter ={StaticResource      
                                                       CNVToColumn},ConverterParameter=?????}"
        VerticalContentAlignment="Stretch" VerticalAlignment="Stretch"
                                                       HorizontalAlignment="Stretch"
        SelectionChanged="SEQDatalistview_SelectionChanged"  Margin="5"> 


       <ListView.View >
             <GridView x:Name="SeqDtStDataGridView1"/>
       </ListView.View>
    </ListView>

转换器:

namespace MFTest.Converters
{
public class CNVToColumn : IValueConverter
{

    public object Convert(object value,
                          Type targetType, 
                          object parameter,
                          System.Globalization.CultureInfo culture)
    {
        DataTable dt = (DataTable)value;
        GridView GV = (GridView)parameter;                <========= fail here ===========
        if (dt != null && GV != null)
          foreach (var colum in dt.Columns)               // Binding the Columns
          {
                DataColumn dc = (DataColumn)colum;
                GridViewColumn column = new GridViewColumn();
                column.DisplayMemberBinding = new Binding(dc.ColumnName);
                column.Header = dc.ColumnName;
                GV.Columns.Add(column);
          } 
        return null;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }

}
}

Answer 1

从 .NET 4 开始，您可以使用 x:Reference这允许您避免只能在依赖属性上设置的 ElementName 绑定(bind)，同时实现几乎相同的事情。

由于循环依赖性限制，您不能在树中引用控件本身或它的祖先。但是，您可以将绑定(bind)向上移动一个级别并仅继承 DataContext，例如

<Border DataContext="{Binding Path=DisplayDT[0],
                              Converter={StaticResource CNVToColumn},
                              ConverterParameter={x:Reference SeqDtStDataListView1}}">
    <ListView Name="SeqDtStDataListView1" Grid.Row="1">