从Silverlight DataGrid中的索引获取行 [英] Get Row from Index in Silverlight DataGrid

问题描述

我试图在Silverlight DataGrid中实现重新排序行。为此，我将扩展默认的 DataGridDragDropTarget ，我需要覆盖并实现以下方法：

I am trying to implement reordering rows in a Silverlight DataGrid. For this I am extending the default DataGridDragDropTarget, and I need to override and implement the following method:

protected override DataGridRow ContainerFromIndex(DataGrid itemsControl, int index)
{

}

如何从DataGrid和索引获取DataGridRow？

How can I get the DataGridRow from the DataGrid and the Index?

推荐答案

A Herzmeister的回答略有改善，请参阅评论：

A slight improvement on Herzmeister's answer, see comments:

protected override DataGridRow ContainerFromIndex(DataGrid itemsControl, int index)
{
    var rowsPresenter = itemsControl.GetVisualDescendants().OfType<DataGridRowsPresenter>().FirstOrDefault();
    if (rowsPresenter != null)
    {
        return rowsPresenter.Children.OfType<DataGridRow>()
                .Where(row => row.GetIndex() == index).SingleOrDefault();
    }
    return null;
}

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