ASP.NET 2.0中合并 GridView 的表头单元格（新方法）

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ASP.NET 2.0中合并 GridView 的表头单元格，在网上看到孟子的文章后，觉得应该还有更直观的方法，在我的不断尝试之下，找到这个方法，就是在GridView的DataBind中编写代码，也可以达到同样合并表头的效果。不过代码看起来更直观了。

前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testCells.aspx.cs" Inherits="testCells" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" CellSpacing="1" ForeColor="#333333" GridLines="None" OnDataBound="GridView1_DataBound">

<asp:BoundField HeaderText="日期" DataField="Date" />

<asp:BoundField HeaderText="周次" DataField="WeekNo" />

<asp:BoundField HeaderText="浏览" DataField="Visit" />

<asp:BoundField HeaderText="人数" DataField="Hit" />

<asp:BoundField HeaderText="浏览" DataField="Visit1" />

<asp:BoundField HeaderText="人数" DataField="Hit1" />

<asp:BoundField HeaderText="浏览" DataField="Visit2" />

<asp:BoundField HeaderText="人数" DataField="Hit2" />

</Columns>

</asp:GridView>

</div>

</form>

</body>

</html>

后台代码如下：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class testCells : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

this.GridView1.DataSource = this.CreateDataSource();

this.GridView1.DataBind();

}

ICollection CreateDataSource()

{

DataTable dt = new DataTable();

DataColumn dc;

DataRow dr;

Random r = new Random(52);

dc = new DataColumn("Date", typeof(System.DateTime));

dc.DefaultValue = System.DateTime.Now.ToString("yyyy-MM-dd");

dt.Columns.Add(dc);

dc = new DataColumn("WeekNo", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Visit", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Hit", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Visit1", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Hit1", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Visit2", typeof(System.Int32));

dt.Columns.Add(dc);

dc = new DataColumn("Hit2", typeof(System.Int32));

dt.Columns.Add(dc);

for (int i = 1; i < 100; i++)

{

dr = dt.NewRow();

dr[0] = System.DateTime.Now.AddDays(i).ToString("yyyy-MM-dd");

dr[1] = r.Next(52);

dr[2] = r.Next(5) * i;

dr[3] = r.Next(6, 10) * i;

dr[4] = r.Next(11) * i;

dr[5] = r.Next(11, 20) * i;

dr[6] = r.Next(21) * i;

dr[7] = r.Next(31, 40) * i;

dt.Rows.Add(dr);

}

return dt.DefaultView;

}

protected void GridView1_DataBound(object sender, EventArgs e)

{

GridViewRow gvr = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);

//TableCellCollection tcc = null;

Table t = new Table();

TableRow tr = new TableRow();

TableCell tc = null;

tc = new TableCell();

tc.ColumnSpan = 2;

tc.HorizontalAlign = HorizontalAlign.Center;

tc.Text = "";

gvr.Cells.Add(tc);

//tr.Cells.Add(tc);

tc = new TableCell();

tc.ColumnSpan = 2;

tc.Text = "合并1";

tc.HorizontalAlign = HorizontalAlign.Center;

gvr.Cells.Add(tc);

//tr.Cells.Add(tc);

tc = new TableCell();

tc.ColumnSpan = 2;

tc.Text = "合并2";

tc.HorizontalAlign = HorizontalAlign.Center;

gvr.Cells.Add(tc);

//tr.Cells.Add(tc);

tc = new TableCell();

tc.ColumnSpan = 2;

tc.Text = "合并3";

tc.HorizontalAlign = HorizontalAlign.Center;

gvr.Cells.Add(tc);

//tr.Cells.Add(tc);

//t.Rows.Add(tr);

//GridView1.Controls[0].Controls.AddAt(0, gvr);

//GridView1.HeaderRow.Controls.AddAt(0, gvr);

//e.Row.NamingContainer.Controls.AddAt(0, gvr);

//e.Row.Parent.Controls.AddAt(0, gvr);

GridView1.HeaderRow.Parent.Controls.AddAt(0, gvr);//这样的语句是不是看起来更直观,一开始我在RowDataBound事件处理方法中写就会报错，说未引用对象，觉得应该能得到该对象的引用啊，我仔细想了之后觉得应该放在DataBound事件处理方法中就ok了，想想也是，在数据绑定之后肯定能得到gridview表头父控件的引用。

}

ASP.NET 2.0中合并 GridView 的表头单元格 （新方法）

ASP.NET 2.0中合并 GridView 的表头单元格（新方法）