前台设计页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>无标题页</title> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server"> </asp:GridView> </div> </form> </body> </html>
后台代码：
using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { MakeMasterTable(); //创建主表 MakeDetailTable(); //创建子表 MakeDataRelation(); //建立主子表关联 } private DataSet ds; private void MakeMasterTable() { //创建数据表对象 DataTable table = new DataTable("MasterTable"); DataColumn column; DataRow row; //创建数据列对象 column = new DataColumn(); //设置数据列的数据类型 column.DataType = System.Type.GetType("System.Int32"); column.ColumnName = "DictTypeID";//指定数据列名 column.ReadOnly = true; //设置数据列为只读列 column.Unique = true; //设置数据列中的值不允许重复 table.Columns.Add(column); column = new DataColumn(); column.DataType = System.Type.GetType("System.String"); column.ColumnName = "DictTypeName"; column.AutoIncrement = false; //设置数据列中的值不自动递增 column.Caption = "DictTypeName"; //设置数据列标题 column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); //创建列数组 DataColumn[] PrimaryKeyColumns = new DataColumn[1]; //将DictTypeID赋给列数组 PrimaryKeyColumns[0] = table.Columns["DictTypeID"]; table.PrimaryKey = PrimaryKeyColumns;//设置DictTypeID字段为主键 ds = new DataSet();//创建数据集对象 ds.Tables.Add(table);//将上面创建的数据表对象添加表数据集中 //为数据表添加数据 for (int i = 0; i< 2; i++) { row = table.NewRow(); row["DictTypeID"] = i; row["DictTypeName"] = "DictTypeName " + i; table.Rows.Add(row); } GridView1.DataSource = ds; GridView1.DataBind(); } private void MakeDetailTable() { DataTable table = new DataTable("DetailTable"); DataColumn column; DataRow row; column = new DataColumn(); column.DataType= System.Type.GetType("System.Int32"); column.ColumnName = "DictItemID"; column.AutoIncrement = true;//设置该数据列是自增列 column.Caption = "DictItemID"; column.ReadOnly = true; column.Unique = true; table.Columns.Add(column); column = new DataColumn(); column.DataType= System.Type.GetType("System.String"); column.ColumnName = "DictItemName"; column.AutoIncrement = false; column.Caption = "DictItemName"; column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); column = new DataColumn(); column.DataType= System.Type.GetType("System.Int32"); column.ColumnName = "DictTypeID"; column.AutoIncrement = false; column.Caption = "DictTypeID"; column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); ds.Tables.Add(table); for(int i = 0; i <= 4; i ++) { row = table.NewRow(); //row["DictItemID"] = i;//因为该列是自增列所以不用赋值 row["DictItemName"] = "DictItemName " + i; row["DictTypeID"] = 0; table.Rows.Add(row); } for(int i = 0; i <= 4; i ++) { row = table.NewRow(); //row["DictItemID"] = i + 5; row["DictItemName"] = "DictItemName " + (i+5); row["DictTypeID"] = 1; table.Rows.Add(row); } } private void MakeDataRelation() { DataColumn masterColumn = ds.Tables["MasterTable"].Columns["DictTypeID"]; DataColumn detailColumn = ds.Tables["DetailTable"].Columns["DictTypeID"]; //使用DataRelation对象建立主子表的关联关系 DataRelation relation = new DataRelation("MasterDetail", masterColumn, detailColumn); ds.Tables["DetailTable"].ParentRelations.Add(relation); } }