<%@ 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>DropDownList绑定示例-Mzwu.Com</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" EnableViewState="false" runat="server">
</asp:DropDownList>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="绑定一" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="绑定二" />
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="绑定三" /></div>
</form>
</body>
</html>Default.aspx.cs:
using System;
using System.Data;
using System.Data.SqlClient;
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 _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
//方法一:逐项添加
protected void Button1_Click(object sender, EventArgs e)
{
DropDownList1.Items.Add(new ListItem("木子屋", "http://www.mzwu.com/"));
DropDownList1.Items.Add(new ListItem("网易", "http://www.163.com/"));
DropDownList1.Items.Add(new ListItem("新浪", "http://www.sina.com.cn/"));
}
//方法二:绑定数据源
protected void Button2_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable("Web");
DataColumn dc;
DataRow dr;
//---------------------添加字段----------------
dc = new DataColumn();
dc.DataType = System.Type.GetType("System.String");
dc.ColumnName = "name";
dc.AllowDBNull = true;
dt.Columns.Add(dc);
dc = new DataColumn();
dc.DataType = System.Type.GetType("System.String");
dc.ColumnName = "url";
dc.AllowDBNull = true;
dt.Columns.Add(dc);
//---------------------添加记录----------------
dr = dt.NewRow();
dr["name"] = "新浪";
dr["url"] = "http://www.sina.com.cn/";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["name"] = "木子屋";
dr["url"] = "http://www.mzwu.com/";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["name"] = "网易";
dr["url"] = "http://www.163.com/";
dt.Rows.Add(dr);
//----把表绑定到DropDownList----
DropDownList1.DataSource = dt.DefaultView;
DropDownList1.DataTextField = "name";
DropDownList1.DataValueField = "url";
DropDownList1.DataBind();
}
//方法三:绑定一维数组
protected void Button3_Click(object sender, EventArgs e)
{
//ArrayList arrTest = new ArrayList();
//arrTest.Add("网易");
//arrTest.Add("新浪");
//arrTest.Add("木子屋");
string[] arrTest = { "网易", "新浪", "木子屋" };
DropDownList1.DataSource = arrTest;
DropDownList1.DataBind();
}
}
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