经常在网上找各种各样的资料看,来解决某一具有针对性的问题,可是最终发现还是MSDN好,可惜大部分没有汉化,而且实例型的资料并不是很多,但不管怎么说MSDN还是需要我们认真学习的!
<%@ Page Language=\"C#\" AutoEventWireup=\"true\"
CodeFile=\"ClientCallback.aspx.cs\" Inherits=\"ClientCallback\" %>
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML
1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\" >
<head runat=\"server\">
<script type=\"text/javascript\">
function LookUpStock()
{
var lb = document.forms[0].ListBox1;
var product = lb.options[lb.selectedIndex].text
CallServer(product, \"\");
}
function ReceiveServerData(rValue)
{
Results.innerText = rValue;
}
</script>
</head>
<body>
<form id=\"form1\" runat=\"server\">
<div>
<aspistBox ID=\"ListBox1\" Runat=\"server\"></aspistBox>
<br />
<br />
<button onclick=\"LookUpStock()\">Look Up Stock</button>
<br />
<br />
Items in stock: <span ID=\"Results\"></span>
<br />
</div>
</form>
</body>
</html>
1 using System;
2 using System.Data;
3 using System.Configuration;
4 using System.Collections;
5 using System.Web;
6 using System.Web.Security;
7 using System.Web.UI;
8 using System.Web.UI.WebControls;
9 using System.Web.UI.WebControls.WebParts;
10 using System.Web.UI.HtmlControls;
11
12 public partial class ClientCallback : System.Web.UI.Page,
13 System.Web.UI.ICallbackEventHandler
14 {
15 protected System.Collections.Specialized.ListDictionary catalog;
16 protected void Page_Load(object sender, EventArgs e)
17 {
18 String cbReference =
19 Page.ClientScript.GetCallbackEventReference(this,
20 \"arg\", \"ReceiveServerData\", \"context\");
21 String callbackScript;
22 callbackScript = \"function CallServer(arg, context)\" +
23 \"{ \" + cbReference + \"} ;\";
24 Page.ClientScript.RegisterClientScriptBlock(this.GetType(),
25 \"CallServer\", callbackScript, true);
26
27 catalog = new System.Collections.Specialized.ListDictionary();
28 catalog.Add(\"monitor\", 12);
29 catalog.Add(\"laptop\", 10);
30 catalog.Add(\"keyboard\", 23);
31 catalog.Add(\"mouse\", 17);
32
33 ListBox1.DataSource = catalog;
34 ListBox1.DataTextField = \"key\";
35 ListBox1.DataBind();
36 }
37
38 public String RaiseCallbackEvent(String eventArgument)
39 {
40 String returnValue;
41 if (catalog[eventArgument] == null)
42 {
43 returnValue = \"-1\";
44 }
45 else
46 {
47 returnValue = catalog[eventArgument].ToString();
48 }
49 return returnValue;
50 }
51 } |