如何处理GridView数据绑定时数据源为空时显示表头和quot的问题？

DataTable dt_Test = new DataTable();

dt_Test = obj.GetList();

if(dt_Test.Rows.Count == 0)

{

dt_Test.Rows.Add(dt.NewRow());

gv_Test.DataSource = dt_Test;

gv_Test.DataBind();

int columnCount = dt_Test.Rows[0].Cells.Count;

gv_Test.Rows[0].Cells.Clear();

gv_Test.Rows[0].Cells.Add(new TableCell());

gv_Test.Rows[0].Cells[0].ColumnSpan = columnCount;

gv_Test.Rows[0].Cells[0].Text = "没有记录";

gv_Test.Rows[0].Cells[0].Style.Add("text-align","center");
}

else

{

gv_Test.DataSource = dt_Test;

gv_Test.DataBind();

}