结合CODEPRJECT上的一个例子写的跨多行多列的DATAGRID

Code
  1using System;
  2using System.Collections;
  3using System.ComponentModel;
  4using System.Data;
  5using System.Drawing;
  6using System.Web;
  7using System.Web.SessionState;
  8using System.Web.UI;
  9using System.Web.UI.WebControls;
 10using System.Web.UI.HtmlControls;
 11
 12namespace WebApplication3
 13{
 14    /**//// <summary>
 15    /// Summary description for WebForm1.
 16    /// </summary>
 17    public class WebForm1 : System.Web.UI.Page
 18    {
 19        private DataGrid m_dgDatagridToDecorate = null;
 20        private ArrayList m_arrHeaderCells = null;
 21        protected System.Web.UI.WebControls.DataGrid DataGrid1;        
 22        private Hashtable m_htblRowspanIndex = new Hashtable();
 23
 24        private void Page_Load(object sender, System.EventArgs e)
 25        {
 26            if(!this.IsPostBack)
 27            {
 28                MergeGrid();                
 29            }
 30        }
 31
 32        AddMergeHeader#region AddMergeHeader
 33        private void AddMergeHeader(ArrayList arrHeaderCells)
 34        {
 35            m_arrHeaderCells =arrHeaderCells;
 36        }
 37        #endregion
 38
 39        property#region property
 40        private DataGrid DatagridToDecorate
 41        {
 42            get
 43            {
 44                return m_dgDatagridToDecorate;
 45            }
 46            set
 47            {
 48                if(null != m_dgDatagridToDecorate)
 49                {
 50                    m_dgDatagridToDecorate.ItemCreated -= new DataGridItemEventHandler(DatagridToDecorate_ItemCreated);
 51                }
 52                m_dgDatagridToDecorate = value;    
 53                m_dgDatagridToDecorate.ItemCreated += new DataGridItemEventHandler(DatagridToDecorate_ItemCreated);
 54            }
 55        }
 56        #endregion        
 57
 58        DatagridToDecorate_ItemCreated#region DatagridToDecorate_ItemCreated
 59        private void DatagridToDecorate_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
 60        {
 61            //*** Examine if the item created is the header item
 62            ListItemType lit = e.Item.ItemType;
 63            if(ListItemType.Header == lit)
 64            {
 65                //*** Redirect the default header rendering method to our own method
 66                e.Item.SetRenderMethodDelegate(new RenderMethod(NewRenderMethod));                
 67            }
 68        }
 69        #endregion        
 70
 71        NewRenderMethod#region NewRenderMethod
 72        private void NewRenderMethod(HtmlTextWriter writer, Control ctl)
 73        {            
 74            int iCurrIndex = 0;
 75            for(int i=0; i<m_arrHeaderCells.Count; i++)
 76            {
 77                TableCell item = (TableCell)m_arrHeaderCells[i];                
 78                if(item.ColumnSpan > 1)
 79                {
 80                    iCurrIndex += item.ColumnSpan-1;
 81                }
 82                if(item.RowSpan > 1)
 83                {
 84                    m_htblRowspanIndex.Add(iCurrIndex + i, iCurrIndex + i);
 85                }
 86                item.RenderControl(writer);
 87            }
 88            writer.WriteEndTag("TR");            
 89            //*** Add the style attributes that was defined in design time
 90            //      to our second row so they both will have the same appearance
 91            m_dgDatagridToDecorate.HeaderStyle.AddAttributesToRender(writer);            
 92            //*** Insert the second row
 93            writer.RenderBeginTag("TR");
 94            //*** Render all the cells that was defined in design time, except the last one
 95            //      because we already rendered it above
 96            for(int i=0; i< ctl.Controls.Count; i++)
 97            {
 98                if((null == m_htblRowspanIndex[i]))
 99                {
100                    ctl.Controls[i].RenderControl(writer);
101                }
102            }            
103            //*** We don't need to write the </TR> close tag because the writer will do that for us
104            //      and so we're done :)
105        }
106
107        #endregion
108
109        GetData#region GetData
110        private DataTable GetData()
111        {
112            DataTable dt;
113            dt = new DataTable();
114
115            dt.Columns.Add("Code");
116            dt.Columns.Add("FName");
117            dt.Columns.Add("MName");
118            dt.Columns.Add("LName");        
119            dt.Columns.Add("Age");    
120            dt.Columns.Add("Elementary");
121            dt.Columns.Add("Junior");            
122            dt.Columns.Add("High");
123            dt.Columns.Add("Religion");
124            for(int i=1; i <= 12; i++)
125            {
126                DataRow dr = dt.NewRow();
127                if(i<5)
128                {
129                    dr["Code"] = "Code" + "hi";
130                }
131                else
132                {
133                    dr["Code"] = "Code" +"zz";
134                }
135                dr["FName"] = "FName" + i.ToString();
136                dr["MName"] = "MName" + i.ToString();                                
137                dr["LName"] = "LName" + i.ToString();                
138                dr["Age"] = "Age" + i.ToString();
139                dr["Elementary"] = "Elementary" + i.ToString();
140                dr["Junior"] = "Junior" + i.ToString();
141                dr["High"] = "High" + i.ToString();
142                dr["Religion"] = "Religion" + i.ToString();
143                dt.Rows.Add(dr);
144            }
145
146            return dt;
147        }
148        #endregion
149
150        MergeGrid#region MergeGrid
151        private void MergeGrid()
152        {
153            TableCell cell = null;
154
155            DatagridToDecorate = DataGrid1;
156            ArrayList header = new ArrayList();                                
157
158            cell = new TableCell();
159            cell.Text = "NAME";
160            cell.RowSpan = 1;
161            cell.ColumnSpan = 3;
162            cell.HorizontalAlign = HorizontalAlign.Center;
163            header.Add(cell);        
164        
165        
166            AddMergeHeader(header);
167        
168            DataTable table = GetData();
169            //添加绑定列 START
170            BoundColumn bc = new BoundColumn();
171            bc.HeaderText = "Name";
172            bc.DataField = table.Columns["FName"].ColumnName.ToString();
173            DataGrid1.Columns.Add(bc);
174
175            BoundColumn bc1 = new BoundColumn();
176            bc1.HeaderText = "Name";            
177            bc1.DataField = table.Columns["FName"].ColumnName.ToString();
178            DataGrid1.Columns.Add(bc1);
179
180            BoundColumn bc2 = new BoundColumn();
181            bc2.HeaderText = "Name";            
182            bc2.DataField = "FName";
183            DataGrid1.Columns.Add(bc2);
184            //添加绑定列 END
185            DataGrid1.DataSource = table;
186            DataGrid1.DataBind();
187
188        }    
189        #endregion
190        
191        Web Form Designer generated code#region Web Form Designer generated code
192        override protected void OnInit(EventArgs e)
193        {
194            //
195            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
196            //
197            InitializeComponent();
198            base.OnInit(e);
199        }
200        
201        /**//// <summary>
202        /// Required method for Designer support - do not modify
203        /// the contents of this method with the code editor.
204        /// </summary>
205        private void InitializeComponent()
206        {            
207            this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
208            this.Load += new System.EventHandler(this.Page_Load);
209
210        }
211        #endregion    
212
213        private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
214        {
215        
216        }
217
218        
219    
220        
221    }
222}
223

页面

 1<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication3.WebForm1" %>
 2<HTML>
 3    <HEAD>
 4        <title>MergeHeader</title>
 5        <META http-equiv="Content-Type" content="text/html; charset=gb2312">
 6        <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
 7        <meta name="CODE_LANGUAGE" Content="C#">
 8        <meta name="vs_defaultClientScript" content="JavaScript">
 9        <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
10    </HEAD>
11    <body MS_POSITIONING="GridLayout">
12        <form id="Form1" method="post" runat="server">
13            <asp:datagrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" runat="server"
14                BorderColor="#CC9966" BorderWidth="1px" BackColor="White" CellPadding="4" BorderStyle="None"
15                AllowSorting="True" AutoGenerateColumns="False">
16                <SelectedItemStyle Font-Bold="True" Wrap="False" ForeColor="#663399" BackColor="#FFCC66"></SelectedItemStyle>
17                <EditItemStyle Wrap="False"></EditItemStyle>
18                <AlternatingItemStyle Wrap="False"></AlternatingItemStyle>
19                <ItemStyle Wrap="False" HorizontalAlign="Right" ForeColor="#330099" BackColor="White"></ItemStyle>
20                <HeaderStyle Font-Bold="True" Wrap="False" ForeColor="#FFFFCC" BackColor="#990000"></HeaderStyle>
21                <FooterStyle ForeColor="#330099" BackColor="#FFFFCC"></FooterStyle>
22                <PagerStyle HorizontalAlign="Center" ForeColor="#330099" BackColor="#FFFFCC"></PagerStyle>
23            </asp:datagrid>
24        </form>
25    </body>
26</HTML>
27