ASP.NET 2.0中合并 GridView 的多表头单元格

cs代码：

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{

GridViewRow rowHeader = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
//string HeaderBackColor = "#EDEDED";
//rowHeader.BackColor = System.Drawing.ColorTranslator.FromHtml(HeaderBackColor);
rowHeader.BackColor = System.Drawing.Color.Black;
rowHeader.Font.Bold = true;

TableCellCollection cells = e.Row.Cells;
////清除自动生成的表头
//cells.Clear();
TableCell headerCell = new TableCell();
headerCell = new TableCell();
headerCell.Text = "专业";
//headerCell.BorderWidth = Unit.Pixel(0);
//headerCell.BorderStyle = BorderStyle.None;
//headerCell.BorderColor = System.Drawing.Color.DarkGray;
headerCell.HorizontalAlign = HorizontalAlign.Center;
headerCell.VerticalAlign = VerticalAlign.Bottom;
rowHeader.Cells.Add(headerCell);

TableCell headerCell1 = new TableCell();

headerCell1 = new TableCell();
headerCell1.Text = "单选题";
headerCell1.BorderWidth = Unit.Pixel(0);
headerCell1.BorderStyle = BorderStyle.Solid;
headerCell1.BorderColor = System.Drawing.Color.DarkGray;
headerCell1.ColumnSpan = 6;
headerCell1.HorizontalAlign = HorizontalAlign.Center;
rowHeader.Cells.Add(headerCell1);

TableCell headerCell2 = new TableCell();

headerCell2 = new TableCell();
headerCell2.Text = "多选题";
headerCell2.ColumnSpan = 6;
headerCell2.HorizontalAlign = HorizontalAlign.Center;
rowHeader.Cells.Add(headerCell2);

TableCell headerCell3 = new TableCell();

headerCell3 = new TableCell();
headerCell3.Text = "判断题";
headerCell3.ColumnSpan = 6;
headerCell3.HorizontalAlign = HorizontalAlign.Center;
rowHeader.Cells.Add(headerCell3);

rowHeader.Visible = true;
GridView1.Controls[0].Controls.AddAt(0, rowHeader);

}

}

html 代码:

<asp:GridView id="GridView1" runat="server" Width="100%" PageSize="16" BorderWidth="1px" BorderStyle="Solid" BorderColor="#CCCCCC" BackColor="White" CellPadding="0" AutoGenerateColumns="False" AllowPaging="True" OnRowCreated="GridView1_RowCreated" >
<FooterStyle BackColor="#507CD1" Font-Bold="True"></FooterStyle>
<Columns>
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:Label id="Label1" runat="server" Text=''></asp:Label>
</ItemTemplate>
<ItemStyle BackColor="#F7F7F7" BorderStyle="Solid" Height="20px" BorderWidth="1px" BorderColor="#CCCCCC" HorizontalAlign="Left" VerticalAlign="Middle"></ItemStyle>

<HeaderStyle BorderStyle="Solid" Height="25px" BorderWidth="1px" BorderColor="#CCCCCC" HorizontalAlign="Center" VerticalAlign="Middle"></HeaderStyle>
</asp:TemplateField>
<asp:TemplateField HeaderText="A">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="B">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="C">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="D">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="E">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="小计">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="A">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</EditItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:Label ID="Label2" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="B">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="C">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="D">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="E">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="小计">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="A">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="B">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="C">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="D">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="E">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="小计">
<HeaderStyle HorizontalAlign="Center" />
</asp:TemplateField>
</Columns>

<RowStyle BorderStyle="Solid" BorderWidth="1px" BorderColor="#CCCCCC"></RowStyle>

<PagerStyle ForeColor="Black" HorizontalAlign="Right"></PagerStyle>

<HeaderStyle BorderStyle="Solid" Height="25px" ForeColor="Black" BorderWidth="1px" CssClass="head" BorderColor="#CCCCCC" Font-Bold="True"></HeaderStyle>
</asp:GridView>