ASP.NET实现DataSet记录为空时同样显示GridView的表头

下面代码可以实现绑定Dataset到GridView控件，而DataSet为空，GridView表头一样显示出来的效果
**//**//// <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();
 }