<%@ WebHandler Language="C#" Class="SayHello" %>
using System;
using System.Web;
public class SayHello : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "text/plain";
string param = context.Request.Params["Name"];
context.Response.Write("Hello, " + param);
}
public bool IsReusable {
get {
return false;
}
}
}JavaScript Code
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Call ASHX in JavaScript by DevCurry.com</title>
<script type="text/javascript">
var httpReq = null;
function callASHX() {
httpReq = XMLHttpRequest();
httpReq.onreadystatechange = XMLHttpRequestCompleted;
httpReq.open("GET", "SayHello.ashx?Name=" +
document.getElementById('<%=txtName.ClientID%>').value, true);
httpReq.send(null);
}
// initialize XMLHttpRequest object
function XMLHttpRequest() {
var xmlHttp;
try {
// Opera 8.0+, Firefox, Safari
xmlHttp = new XMLHttpRequest();
}
catch (e) {
// IEBrowsers
try {
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) {
return false;
}
}
}
return xmlHttp;
}
function XMLHttpRequestCompleted()
{
if (httpReq.readyState == 4)
{
try
{
alert(httpReq.responseText);
}
catch (e)
{
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<asp:Button ID="btnCall" runat="server" Text="Enter Text and Click"
OnClientClick="callASHX();"/>
</div>
</form>
</body>
</html>
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