GridVIew 动态添加行

protected void Page_Load(object sender, EventArgs e)
{
Table1.CellPadding = 0;
Table1.CellSpacing = 0;
Table1.Width = Unit.Percentage(50);

TableRow trHead = new TableRow();

TableCell tcHeadFoodName = new TableCell();
TableCell tcHeadType = new TableCell();

tcHeadFoodName.Text ="类别";
tcHeadType.Text = "值";

trHead.Cells.Add(tcHeadFoodName);
trHead.Cells.Add(tcHeadType);

trHead.HorizontalAlign = HorizontalAlign.Center;

trHead.Height = 30;

 

TableRow tr2 = new TableRow();
TableCell tc21 = new TableCell();
TableCell tc22 = new TableCell();
tc21.Text = "产品名称：";
TextBox tb1 = new TextBox();
tb1.ID = "txtProdName";
tc22.Controls.Add(tb1);
tr2.Cells.Add(tc21);
tr2.Cells.Add(tc22);
Table1.Rows.Add(tr2);

SqlConnection conn = DB.CreateConn();
conn.Open();
int pid=Convert.ToInt32(Request.QueryString["classid"].ToString());
lblClassid.Text = Request.QueryString["classid"].ToString();
string sql = "select t.* from(select * from tb_class where parentid=" +pid+ " and isclass=0 union all select * from tb_class where parentid in(select classID from tb_class where parentid=3 and isclass=0)) t order by dbo.f_getClassmergid(t.classid)";
SqlCommand cmd = new SqlCommand(sql,conn);
SqlDataReader dr = cmd.ExecuteReader();

while (dr.Read())
{//开始动态创建控件
if (Convert.ToInt32(dr["parentid"].ToString()) == pid)
{//判断是类别，则不创建控件。
TableRow tr1 = new TableRow();
TableCell tc1 = new TableCell();
TableCell tc2 = new TableCell();
tc1.Text = dr["className"].ToString();
tr1.BackColor = Color.LightGray;

tr1.Cells.Add(tc1);
tr1.Cells.Add(tc2);
Table1.Rows.Add(tr1);
}
else
{
TableRow tr1 = new TableRow();
TableCell tc1 = new TableCell();
TableCell tc2 = new TableCell();

Label lbl = new Label();
lbl.ID = "lbl" + dr["classid"].ToString();
lbl.Text = dr["className"].ToString();

TextBox tb = new TextBox();
tb.ID = "txt" + dr["classid"].ToString();

 

tc1.Controls.Add(lbl);
tc2.Controls.Add(tb);
//验证控件
RequiredFieldValidator rf = new RequiredFieldValidator();
rf.ID = "rs" + dr["classid"].ToString();
rf.ControlToValidate = "txt" + dr["classid"].ToString();
rf.ErrorMessage = "请输入"+dr["className"].ToString();

tc2.Controls.Add(rf);

tr1.Cells.Add(tc1);
tr1.Cells.Add(tc2);

tr1.HorizontalAlign = HorizontalAlign.Left;
tr1.Height = 30;
tr1.VerticalAlign = VerticalAlign.Middle;

Table1.Rows.Add(tr1);
}
}
dr.Close();
conn.Close();
conn.Dispose();
}

取值时：

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protected void Button1_Click(object sender, EventArgs e)
{
this.Label1.Text = ("名称：" + ((TextBox)(Table1.FindControl("txtProdName"))).Text + "<br/>");
SqlConnection conn = DB.CreateConn();
conn.Open();
string sql = "select * from tb_class where parentid in(select classID from tb_class where parentid="+Convert.ToInt32(lblClassid.Text)+" and isclass=0) order by dbo.f_getClassmergid(classid)";

SqlCommand cmd1 = new SqlCommand(sql, conn);
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
this.Label1.Text += ((Label)Table1.FindControl("lbl"+dr["classid"].ToString())).Text+((TextBox)Table1.FindControl("txt" + dr["classid"].ToString())).Text+"<br/>";
}
dr.Close();
conn.Close();
conn.Dispose();

}