這是採用ajax技術,刷新是肯定的,是在我們察覺不到的速度完成.XMLHTTP犧牲頁面的方法,我們之所以看不見刷新,是因為所有的工作都是在犧牲頁面上進行的,裡面"翻江倒海"的"折騰",我們看不見,效率上差一點!
AjaxTest.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AjaxTest.aspx.cs" Inherits="AjaxTest" %>
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
http://www.w3.org/1999/xhtml " >
AjaxTest.cs
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;
using MeetWeb;
public partial class AjaxTest : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
AjaxPro.Utility.RegisterTypeForAjax(typeof(AjaxTest));
if (!Page.IsPostBack)
{
BindData();
}
}
private void BindData()
{
DataSet ds = new DataSet();
String sql = "Select id,name from test";
try
{
ds = GetDataSet(sql, "test");
this.DropDownList1.DataSource = ds.Tables[0];
this.DropDownList1.DataTextField = "name";
this.DropDownList1.DataValueField = "id";
this.DropDownList1.DataBind();
this.DropDownList1.Attributes.Add("onclick", "areaResult();");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
public static DataSet GetDataSet(string sql,string aa)
{
MeetWeb.SqlDataBase a = new MeetWeb.SqlDataBase("server=localhost\PMSERVER;uid=sa;pwd=sa;database=test");
DataSet ds = new DataSet();
ds=a.CreateSet(sql, aa);
return ds;
}
[AjaxPro.AjaxMethod]
public DataSet GetCityList(int id)
{
string sql = "select name from test where id='" + id + "'";
return GetDataSet(sql,"test");
}
}