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Ajax定义为“Asynchronous JavaScript + XML”的简称，也就是异步的JavaScript和XML处理。从原理上看，主要是Ajax可以通过调用HttpRequest实现与服务器的异步通讯，并最终在网页中实现丰富友好的用户界面  <httpHandlers> <add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" /></httpHandlers> 3.假设应用系统叫Document，目录格式为Pages/AjaxTest //[Ajax.AjaxMethod][Ajax.AjaxMethod(Ajax.HttpSessionStateRequirement.Read)]public static string GetNIVNumber(string str)   { return str; }5.在Pages/AjaxTest下建立页面AjaxForm.aspx <HTML> <HEAD> <title>AjaxForm</title> <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> <meta name="CODE_LANGUAGE" Content="C#"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> <script language="javascript"> function testAjax()  { var first=document.getElementById("txtfirst"); AjaxMethod.GetNIVNumber(first.value,callback_GetNIVNumber); } function callback_GetNIVNumber(res) { var obj=document.getElementById("txtsecond"); obj.value=res.value; } </script> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <INPUT style="Z-INDEX: 101; LEFT: 208px; POSITION: absolute; TOP: 40px" type="button" value="Button" onclick="testAjax();"> <asp:TextBox id="txtfirst" style="Z-INDEX: 102; LEFT: 40px; POSITION: absolute; TOP: 40px" runat="server"></asp:TextBox> <asp:TextBox id="txtsecond" style="Z-INDEX: 103; LEFT: 40px; POSITION: absolute; TOP: 72px" runat="server"></asp:TextBox> </form> </body></HTML>protected System.Web.UI.WebControls.TextBox txtfirst;protected System.Web.UI.WebControls.TextBox txtsecond;private void Page_Load(object sender, System.EventArgs e){ //注册,其中Document.Pages.AjaxTest.AjaxMethod为AjaxMethod.cs方法所在的命名空间 Ajax.Utility.RegisterTypeForAjax(typeof(Document.Pages.AjaxTest.AjaxMethod));} 然后运行就可以了， |
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