.net下ajax的使用.

问一下,ASP.NET下实现AJAX是不是借助于工具栏里面的控件就可以了?
是不是不用编写大量的代码啊?

解决方案 »

  1.   

    没错,很正确.不过要引用程序集和调用ajax控件.示例如下
    添加UpdatePanelDemo.aspx<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UpdatePanelDemo.aspx.cs" Inherits="Demo3_UpdatePanelDemo" %>
    <!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>UpdatePanel演示</title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
            <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click1" />
            <asp:ScriptManager ID="ScriptManager1" runat="server">
            </asp:ScriptManager>
        </div>
            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                <ContentTemplate>
                    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
                </Triggers>
            </asp:UpdatePanel>
        </form>
    </body>
    </html>
    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;public partial class Demo3_UpdatePanelDemo : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            
        }
        protected void Button1_Click1(object sender, EventArgs e)
        {
            Label1.Text = DateTime.Now.ToString();
        }
    }
      

  2.   

    webconfig
    <?xml version="1.0"?>
    <configuration>
      <configSections>
        <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
          <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
              <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false"/>
            <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
              <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
              <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
              <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
            </sectionGroup>
          </sectionGroup>
        </sectionGroup>
      </configSections>  <system.web>
        <pages>
          <controls>
            <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          </controls>
          <tagMapping>
            <add tagType="System.Web.UI.WebControls.CompareValidator" mappedTagType="System.Web.UI.Compatibility.CompareValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add tagType="System.Web.UI.WebControls.CustomValidator" mappedTagType="System.Web.UI.Compatibility.CustomValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add tagType="System.Web.UI.WebControls.RangeValidator" mappedTagType="System.Web.UI.Compatibility.RangeValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add tagType="System.Web.UI.WebControls.RegularExpressionValidator" mappedTagType="System.Web.UI.Compatibility.RegularExpressionValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add tagType="System.Web.UI.WebControls.RequiredFieldValidator" mappedTagType="System.Web.UI.Compatibility.RequiredFieldValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add tagType="System.Web.UI.WebControls.ValidationSummary" mappedTagType="System.Web.UI.Compatibility.ValidationSummary, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          </tagMapping>
        </pages>
        <!--
              Set compilation debug="true" to insert debugging
              symbols into the compiled page. Because this
              affects performance, set this value to true only
              during development.
        -->
        <compilation debug="false">
          <assemblies>
            <add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          </assemblies>
        </compilation>    <httpHandlers>
          <remove verb="*" path="*.asmx"/>
          <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
        </httpHandlers>    <httpModules>
          <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
        </httpModules>
      </system.web>  <system.web.extensions>
        <scripting>
          <webServices>
          <!-- Uncomment this line to customize maxJsonLength and add a custom converter -->
          <!--
          <jsonSerialization maxJsonLength="500">
            <converters>
              <add name="ConvertMe" type="Acme.SubAcme.ConvertMeTypeConverter"/>
            </converters>
          </jsonSerialization>
          -->
          <!-- Uncomment this line to enable the authentication service. Include requireSSL="true" if appropriate. -->
          <!--
            <authenticationService enabled="true" requireSSL = "true|false"/>
          -->      <!-- Uncomment these lines to enable the profile service. To allow profile properties to be retrieved
               and modified in ASP.NET AJAX applications, you need to add each property name to the readAccessProperties and
               writeAccessProperties attributes. -->
          <!--
          <profileService enabled="true"
                          readAccessProperties="propertyname1,propertyname2"
                          writeAccessProperties="propertyname1,propertyname2" />
          -->
          </webServices>
          <!-- 
          <scriptResourceHandler enableCompression="true" enableCaching="true" />
          -->
        </scripting>
      </system.web.extensions>  <system.webServer>
        <validation validateIntegratedModeConfiguration="false"/>
        <modules>
          <add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
        </modules>
        <handlers>
          <remove name="WebServiceHandlerFactory-ISAPI-2.0"/>
          <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode"
               type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
          <add name="ScriptResource" verb="GET" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
        </handlers>
      </system.webServer>
    </configuration>
      

  3.   

    建议楼主去网上下个ajax的小例子，
    看看就明白了
      

  4.   

    不完全对
    准确的说ASP.NET在服务器端实现AJAX借助于工具栏里面的控件就可以了，前提要安装asp.net.ajax安装包至于客户端ajax实现那不分你服务器端是什么环境，都可以用
      

  5.   

    正确,不过感觉用AJAX.NET组件生成的代码太冗长,如果功能简单的,可以的话还是自己写好,当然,提高开发效率,用AJAX.NET更好,大大的省时间.
      

  6.   

    www.asp.net 有下教程,俺也不会写,不过教程很清楚