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方法一：
效果截图，第一行是通过代码添加的，
第二行GridView本身的表头
 在GridView的RowCreated事件中写添加代码
方法二：
实现方法就是给单元格填充我们想要的格式代码。
 在行创建事件中加如下代码：
protected void GridView1_RowCreated( object sender, GridViewRowEventArgs e )
{ if (e.Row.RowType == DataControlRowType.Header) { //创建一个GridViewRow，相当于表格的 TR 一行 GridViewRow rowHeader = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal); string HeaderBackColor = "#EDEDED"; rowHeader.BackColor = System.Drawing.ColorTranslator.FromHtml(HeaderBackColor); //实现确定要显示的表头样式，也可以通过计算生成 // <tr> // <td rowspan='2'>关键单元格</td> // <td colspan='2'>表头文字</td> // <td colspan='2'>表头文字</td> // <td>表头文字</td> // </tr> // <tr bgcolor='#FFF'> // <td colspan='2'>表头文字</td> // <td rowspan='2'>表头文字</td> // <td colspan='2'>表头文字</td> // </tr> // <tr bgcolor='#FFF'> // <td>表头文字</td> // <td>表头文字</td> // <td>表头文字</td> // <td>表头文字</td> // <td>表头文字</td>"; // </tr> // 上面的样式可以设置斜线 Literal newCells = new Literal(); newCells.Text = @"表头文字1</th> <th colspan='2'>表头文字2</th> <th colspan='2'>表头文字3</th> <th>表头文字4</th> </tr> <tr bgcolor='" + HeaderBackColor + "'>"; newCells.Text += @" <th colspan='2'>表头文字5</th> <th rowspan='2'>表头文字6</th> <th colspan='2'>表头文字7</th> </tr> <tr bgcolor='" + HeaderBackColor + "'>"; newCells.Text += @" <th>表头文字8</th> <th>表头文字9</th> <th>表头文字10</th> <th>表头文字11</th> <th>表头文字12"; TableCellCollection cells = e.Row.Cells; TableHeaderCell headerCell = new TableHeaderCell(); //下面的属性设置与 <td rowspan='2'>关键单元格</td> 要一致 headerCell.RowSpan = 2; headerCell.Controls.Add(newCells); rowHeader.Cells.Add(headerCell); rowHeader.Cells.Add(headerCell); rowHeader.Visible = true; //添加到 GridView1 GridView1.Controls[0].Controls.AddAt(0, rowHeader); } } 方法三（此方法用的一个类文件即可）：
表头定义说明：
表头定义方法:相邻父列头之间用''#''分隔,上级行与下级行用空格('' '')分隔,相邻未级子列头用逗号分隔('',''). 表头定义示例：
A.两层  烟叶等级#级别#保山市 保山,小计#楚雄州 姚安,小计#大理州 宾川,大理,小计#红河州 建水,泸西,弥勒,石屏,小计#昆明市 富民,禄劝,小计#丽江市 华坪,宁蒗,小计#临沧市 沧源,凤庆,耿马,临翔,双江,永德,云县,镇康,小计#普洱市 景东,思茅,镇沅,小计#曲靖市 富源,陆良,罗平,师宗,宣威,小计#文山州 文山,小计#玉溪市 玉溪,小计#总计
B.三层  等级#级别#上期结存 件数,重量,比例#本期调入 收购调入 件数,重量,比例#本期发出 车间投料 件数,重量,比例#本期发出 产品外销百分比 件数,重量,比例#平均值
调用说明:使用时在GridView的RowCreated事件中加入下面代码调用
 if (e.Row.RowType == DataControlRowType.Header)  ...{ DynamicTHeaderHepler dHelper = new DynamicTHeaderHepler(); string header = "等级#级别#上期结存 件数,重量,比例#本期调入 收购调入 件数,重量,比例#本期发出 车间投料 件数,重量," + "比例#本期发出 产品外销百分比 件数,重量,比例#平均值"; dHelper.SplitTableHeader(e.Row, header); }类文件如下：
//
//*********************************************************************** // Created: 2007-10-29 Author: ruijc // File: DynamicTHeaderHepler.cs // Description: 动态生成复合表头帮助类 // 相邻父列头之间用'#'分隔,父列头与子列头用空格(' ')分隔,相邻子列头用逗号分隔(','). //*********************************************************************** using System; using System.Data; using System.Configuration; 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; using System.Collections.Generic; using System.Collections; public class DynamicTHeaderHepler { public DynamicTHeaderHepler() { // // TODO: Add constructor logic here // } /**//// <summary>
/// 重写表头 /// </summary> /// <param name="targetHeader">目标表头</param> /// <param name="newHeaderNames">新表头</param> /// <remarks> /// 等级#级别#上期结存 件数,重量,比例#本期调入 收购调入 件数,重量,比例#本期发出 车间投料 件数,重量, /// 比例#本期发出 产品外销百分比 件数,重量,比例#平均值 /// </remarks> public void SplitTableHeader(GridViewRow targetHeader, string newHeaderNames) { TableCellCollection tcl = targetHeader.Cells;//获得表头元素的实例 tcl.Clear();//清除元素 int row = GetRowCount(newHeaderNames); int col = GetColCount(newHeaderNames); string[,] nameList = ConvertList(newHeaderNames,row,col); int RowSpan = 0; int ColSpan = 0; for (int k = 0; k < row; k++) { string LastFName = ""; for (int i = 0; i < col; i++) { if (LastFName == nameList[i, k] && k!=row-1) { LastFName = nameList[i, k]; continue; } else { LastFName = nameList[i, k]; } int bFlag=IsVisible(nameList, k, i, LastFName); switch (bFlag) { case 0: break; case 1: RowSpan = GetSpanRowCount(nameList,row, k, i); ColSpan = GetSpanColCount(nameList,row,col, k, i); tcl.Add(new TableHeaderCell());//添加表头控件 tcl[tcl.Count - 1].RowSpan = RowSpan; tcl[tcl.Count - 1].ColumnSpan = ColSpan; tcl[tcl.Count - 1].HorizontalAlign = HorizontalAlign.Center; tcl[tcl.Count - 1].Text = LastFName; break; case -1: string[] EndColName = LastFName.Split(new char[] { ',' }); foreach(string eName in EndColName){ tcl.Add(new TableHeaderCell());//添加表头控件 tcl[tcl.Count - 1].HorizontalAlign = HorizontalAlign.Center; tcl[tcl.Count - 1].Text = eName; } break; } } if (k != row-1) {//不是起始行,加入新行标签 tcl[tcl.Count - 1].Text = tcl[tcl.Count - 1].Text+"</th></tr><tr>"; } } } /**//// <summary>
/// 如果上一行已经输出和当前内容相同的列头，则不显示 /// </summary> /// <param name="ColumnList">表头集合</param> /// <param name="rowIndex">行索引</param> /// <param name="colIndex">列索引</param> /// <returns>1:显示,-1:含','分隔符,0:不显示</returns> private int IsVisible(string[,] ColumnList,int rowIndex, int colIndex,string CurrName) { if (rowIndex!=0){ if (ColumnList[colIndex,rowIndex-1]==CurrName){ return 0; }else{ if (ColumnList[colIndex, rowIndex].Contains(",")) { return -1; }else{ return 1; } } } return 1; } /**//// <summary>
/// 取得和当前索引行及列对应的下级的内容所跨的行数 /// </summary> /// <param name="ColumnList">表头集合</param> /// <param name="row">行数</param> /// <param name="rowIndex">行索引</param> /// <param name="colIndex">列索引</param> /// <returns>行数</returns> private int GetSpanRowCount(string[,] ColumnList, int row,int rowIndex, int colIndex) { string LastName = ""; int RowSpan = 1; for (int k = rowIndex; k < row; k++) { if (ColumnList[colIndex,k]==LastName){ RowSpan++; }else{ LastName = ColumnList[colIndex, k]; } } return RowSpan; } /**//// <summary>
/// 取得和当前索引行及列对应的下级的内容所跨的列数 /// </summary> /// <param name="ColumnList">表头集合</param> /// <param name="row">行数</param> /// <param name="col">列数</param> /// <param name="rowIndex">行索引</param> /// <param name="colIndex">列索引</param> /// <returns>列数</returns> private int GetSpanColCount(string[,] ColumnList,int row, int col,int rowIndex, int colIndex) { string LastName = ColumnList[colIndex, rowIndex] ; int ColSpan = ColumnList[colIndex, row-1].Split(new char[] { ',' }).Length; ColSpan = ColSpan == 1 ? 0 : ColSpan; for(int i=colIndex+1;i<col;i++) { if (ColumnList[i, rowIndex] == LastName) { ColSpan += ColumnList[i, row - 1].Split(new char[] { ',' }).Length; } else { LastName = ColumnList[i, rowIndex]; break; } } return ColSpan; } /**//// <summary>
/// 将已定义的表头保存到数组 /// </summary> /// <param name="newHeaders">新表头</param> /// <param name="row">行数</param> /// <param name="col">列数</param> /// <returns>表头数组</returns> private string[,] ConvertList(string newHeaders, int row, int col) { string[] ColumnNames = newHeaders.Split(new char[] {'#'}); string[,] news = new string[col, row]; string Name = ""; for (int i = 0; i < col; i++) { string[] CurrColNames = ColumnNames[i].ToString().Split(new char[] { ' ' }); for (int k = 0; k < row; k++) { if (CurrColNames.Length - 1 >= k) { if (CurrColNames[k].Contains(",")) { if (CurrColNames.Length != row) { if (Name == "") { news[i, k] = news[i, k - 1]; Name = CurrColNames[k].ToString(); } else { news[i, k + 1] = Name; Name = ""; } }else{ news[i, k] = CurrColNames[k].ToString(); } }else{ news[i, k] = CurrColNames[k].ToString(); } }else{ if (Name == "") { news[i, k] = news[i, k - 1]; }else{ news[i, k] = Name;
Name = ""; } } } } return news; } /**//// <summary>
/// 取得复合表头的行数 /// </summary> /// <param name="newHeaders">新表头</param> /// <returns>行数</returns> private int GetRowCount(string newHeaders) { string[] ColumnNames = newHeaders.Split(new char[] { '#' }); int Count = 0; foreach(string name in ColumnNames){ int TempCount = name.Split(new char[] { ' ' }).Length; if (TempCount > Count) Count = TempCount; } return Count; } /**//// <summary>
/// 取得复合表头的列数 /// </summary> /// <param name="newHeaders">新表头</param> /// <returns>列数</returns> private int GetColCount(string newHeaders) { return newHeaders.Split(new char[] { '#' }).Length; } } |
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