动态创建gridview列

gdvSaleVoucher.Columns.Clear();

  DataTable dt = new DataTable();
                string strSql = @"select [level] from dbo.Film_FilmRelation group by [level] order by [level] desc ";

                using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["LocalConnectionString"].ConnectionString))
                {
                    SqlDataAdapter cmd = new SqlDataAdapter(strSql, conn);
                    cmd.Fill(dt);
                }
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    BoundField addbf = new BoundField();//
                    addbf.DataField = "StickCarQutity" + (i + 1);
                    addbf.DataFormatString = "{0:0.00#######}";
                    addbf.FooterStyle.CssClass = "text_right";
                    addbf.ItemStyle.CssClass = "text_right";
                    gdvSaleVoucher.Columns.Add(addbf);

                }
                BoundField lastbf = new BoundField();
                lastbf.DataField = "StickCarQutity";
                lastbf.DataFormatString = "{0:0.00#######}";
                lastbf.FooterStyle.CssClass = "text_right";
                lastbf.ItemStyle.CssClass = "text_right";
                gdvSaleVoucher.Columns.Add(lastbf);

//给该列命名

gdvSaleVoucher.HeaderText = "总数量";

gdvSaleVoucher.DataSource = dt;

gdvSaleVoucher.DataBind();

html

<asp:GridView ID="gdvSaleVoucher" runat="server" AutoGenerateColumns="False" ShowFooter="True"
        Width="400" OnDataBound="gdvSaleVoucher_DataBound">
        <Columns>
            <asp:BoundField DataField="Customer" HeaderText="名称" SortExpression="Customer">
                <ItemStyle HorizontalAlign="Center" />
                <FooterStyle HorizontalAlign="Center" />
            </asp:BoundField>
        </Columns>
    </asp:GridView>

databound给列命名

 protected void gdvSaleVoucher_DataBound(object sender, EventArgs e)
        {

            if (gdvSaleVoucher.Rows.Count > 0)
            {
                DataTable dt = new DataTable();
                string strSql = @"select [level] from dbo.Film_FilmRelation group by [level] order by [level] desc ";

                using (SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["LocalConnectionString"].ConnectionString))
                {
                    SqlDataAdapter cmd = new SqlDataAdapter(strSql, conn);
                    cmd.Fill(dt);
                }
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    gdvSaleVoucher.HeaderRow.Cells[i + 1].Text = dt.Rows[i]["level"].ToString();//给列命名
                }
                gdvSaleVoucher.HeaderRow.Cells[dt.Rows.Count + 1].Text = "总数";
            }
        }