如何获取WPF Datagrid的行索引？

Question

I am using image control column in wpf datagrid. That control is used to delete the row in datagrid if clicked.Can any one tell me how to bubble the controls click event to select the entire row of the grid. Below is my code as of now.

XAML Code :

  <DataGrid x:Name="dg" >
  <DataGrid.Columns>
 <DataGridTextColumn Header="ID"  Binding="{Binding Path=ZoneId}" />
<DataGridTextColumn Header="Sector" Binding="{Binding Path=SectorIds"/>
  <DataGridTemplateColumn Width="40">
     <DataGridTemplateColumn.CellTemplate >
              <DataTemplate>                                     
       <Image x:Name="imgDel"   Source="Delete.png" Stretch="None" MouseLeftButtonDown="imgDel_MouseLeftButtonDown" />
             </DataTemplate>                                    
            </DataGridTemplateColumn.CellTemplate>
           </DataGridTemplateColumn>
     </DataGrid.Columns>
    </DataGrid>

Code Behind :

private void imgDel_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{            
       var inx = dg.SelectedIndex;
}

My requirement is when I clicked the image control in the row , it should delete the entire row from datacontrol. My data grid is binded with a collection.

Thanks

Answer 1

您有sender您可以使用它来获取行索引。

Answer 2

I have a utility method that I use to get Grid row/column.

public static Tuple<DataGridCell, DataGridRow> GetDataGridRowAndCell(DependencyObject dep)
{
    // iteratively traverse the visual tree
    while ((dep != null) && !(dep is DataGridCell) && !(dep is DataGridColumnHeader))
    {
        dep = VisualTreeHelper.GetParent(dep);
    }

    if (dep == null)
        return null;

    if (dep is DataGridCell)
    {
        DataGridCell cell = dep as DataGridCell;

        // navigate further up the tree
        while ((dep != null) && !(dep is DataGridRow))
        {
            dep = VisualTreeHelper.GetParent(dep);
        }

        DataGridRow row = dep as DataGridRow;

        return new Tuple<DataGridCell, DataGridRow>(cell, row);
    }

    return null;
}

Could be called like this:

private void OnDoubleClick(object sender, MouseButtonEventArgs e)
        {
            DependencyObject dep = (DependencyObject)e.OriginalSource;

            Tuple<DataGridCell, DataGridRow> tuple = GetDataGridRowAndCell(dep);
        }

Answer 3

If you're trying to get a reference to the DataGridRow object that your image is inside you could use the VisualTreeHelper to find it.

private void imgDel_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{            
     DependencyObject dataGridRow = sender as DependencyObject;
     while (dataGridRow != null && !(dataGridRow is DataGridRow)) dataGridRow = VisualTreeHelper.GetParent(dataGridRow);
     if (dataGridRow!= null)
     {
           // dataGridRow now contains a reference to the row,
     }    
}