前台：

	<asp:GridView ID="gvInfo" runat="server" AutoGenerateColumns="False" CellPadding="4"
                    ForeColor="#333333" HorizontalAlign="left" EmptyDataText="无" OnDataBound="GridView1_DataBound" Width="100%">
                    <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                    <Columns>
                        <asp:TemplateField HeaderText="序号">
                            <ItemTemplate>
                                <%#Container.DataItemIndex+1%>
                            </ItemTemplate>
                            <ItemStyle Width="5%" HorizontalAlign="Center" />
                        </asp:TemplateField>
					<asp:BoundField DataField="ShowDay" HeaderText="日期">
                            <ItemStyle Width="10%" />
                        </asp:BoundField>
                        <asp:BoundField DataField="ShowTime" HeaderText="时间">
                            <ItemStyle Width="20%" />
                        </asp:BoundField>
                        <asp:BoundField DataField="Place" HeaderText="地点">
                            <ItemStyle Width="15%" />
                        </asp:BoundField>
                        <asp:BoundField DataField="Content" HeaderText="内容">
                            <ItemStyle Width="25%" />
                        </asp:BoundField>
                        <asp:BoundField DataField="Persons" HeaderText="参加人员">
                            <ItemStyle Width="15%" />
                        </asp:BoundField>
                    </Columns>
                    <EditRowStyle BackColor="#2461BF" />
                    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                    <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                    <HeaderStyle BackColor="#cadef4" Font-Bold="True" ForeColor="#3b6798" />
                    <AlternatingRowStyle BackColor="White" />
                </asp:GridView

后台：

protected void Page_Load(object sender, EventArgs e)
		{
			gvInfo.DataSource = List<T>;
			gvInfo.DataBind();
		}

		protected void GridView1_DataBound(object sender, EventArgs e)
		{
			int row = 0;
			for (int i = 1; i < gvInfo.Rows.Count; i++)
			{
				if (gvInfo.Rows[i].Cells[1].Text == gvInfo.Rows[i - 1].Cells[1].Text)
				{
					if (gvInfo.Rows[row].Cells[1].RowSpan == 0) gvInfo.Rows[row].Cells[1].RowSpan++;
					gvInfo.Rows[row].Cells[1].RowSpan++;
					gvInfo.Rows[i].Cells[1].Visible = false;
				}
				else
				{
					row = i;
				}
			}
		}