DevExpress实现根据行，列索引来获取RepositoryItem的方法

/// <summary>
/// 根据行，列索引来获取repositoryitem
/// </summary>
/// <param name="view">gridview</param>
/// <param name="rowindex">行索引</param>
/// <param name="columnindex">列索引</param>
/// <returns>repositoryitem</returns>
public static repositoryitem getrepositoryitem(this gridview view, int rowindex, int columnindex)
{
  gridviewinfo _viewinfo = view.getviewinfo() as gridviewinfo;
  griddatarowinfo _viewrowinfo = _viewinfo.rowsinfo.findrow(rowindex) as griddatarowinfo;
  return _viewrowinfo.cells[columnindex].editor;
}