当DataSet为空时也显示GridView的表头

/**//**//**//// <summary>
/// 当DataSet为空时也显示GridView的表头
/// </summary>
/// <param name="gridView">所要绑定的GridView</param>
/// <param name="ds">所要绑定的数据集</param>
/// <returns>void </returns>
public void BindNoRecords(GridView gridView, DataSet ds)
{
     if (ds.Tables[0].Rows.Count == 0)
     {
          ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
          gridView.DataSource = ds;
          gridView.DataBind();
         int columnCount = gridView.Rows[0].Cells.Count;
          gridView.Rows[0].Cells.Clear();
          gridView.Rows[0].Cells.Add(new TableCell());
          gridView.Rows[0].Cells[0].ColumnSpan = columnCount;
          gridView.Rows[0].Cells[0].Text = "没有数据";
          gridView.RowStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center;
     }
}    

注：其他数据源 如 dataview datatable也类似的写法

if (dv.Count == 0)
        {
            dv.Table.Rows.Add(dv.Table.NewRow());

            this.Gv_Storage.DataSource = dv;
            this.Gv_Storage.DataBind();
            int count =this.Gv_Storage.Rows[0].Cells.Count;
            Gv_Storage.Rows[0].Cells.Clear();
            Gv_Storage.Rows[0].Cells.Add(new TableCell());
            Gv_Storage.Rows[0].Cells[0].ColumnSpan = count;
            Gv_Storage.Rows[0].Cells[0].Text = "没有记录";
            Gv_Storage.RowStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center;
        }
        else
        {
            this.Gv_Storage.DataSource = dv;
            this.Gv_Storage.DataBind();
        }