gridview编辑无法更新，请大家帮忙

能实现编辑，但点击更新后内容不变，我的代码：
 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
  {
  GridView1.DataSource = SqlDataSource2;
  GridView1.DataKeyNames = new string[] { "ID" };
  GridView1.DataBind();
  string str2 = GridView1.DataKeys[e.RowIndex].Values[0].ToString();//获取gridview的主键

  string sqlStr = string.Format("update WEBGIS08 set NAME='{0}',SEX='{1}',TELEPHONE='{2}',WORKID='{3}',BIRTHDAY='{4}',QQ='{5}' where ID='{6}'",
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() ,
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim(),
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim(),
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString().Trim(),
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[5].Controls[0])).Text.ToString().Trim(),
  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[6].Controls[0])).Text.ToString().Trim(),  
  str2);  
   
  OracleCommand cmd=new OracleCommand (sqlStr ,DBcon .myConn );
  DBcon .myConn .Open ();
  int rowCount= cmd .ExecuteNonQuery();
  DBcon .myConn .Close ();
  if (rowCount >0)
  {
  GridView1 .EditIndex =-1;
  string sql1=string .Format ("select * from WEBGIS08");
  refreshDgv (sql1 ,true );
  }
   
  }
实现编辑的代码：
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
  {
  GridView1.EditIndex = e.NewEditIndex;//单击一次“编辑”按钮
  string sql = string.Format("select * from WEBGIS08");
  refreshDgv(sql, true);
  }

断点后发现是sqlStr的update语句无法读取编辑后的gridview中的值