In This Article I Will Explain You Guys About Accessing Method In C# From JQuery.
My Example Going To Be Very Simple. I Will Have Web Form To Enter A Name & Button Saying "Say Hello".
If You Click The Button Alert Should Come Saying "Hello <Name>".
First Of All Make Sure You Have Simple Idea About ASP.NET Web Sites, C# and JQuery.
Lets Get Into Works.
Create A New "ASP.NET Empty Web Site" & Add A New Web Form For That.
In My Case I have Created As Below.
Then Add A JQuery File To The Web Site.
Then Create The Text Field and Button As Below.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="jquery.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtName" />
<br/>
<input type="button" id="btnSayHello" value="Say Hello"/>
</div>
</form>
</body>
</html>
Now Lets Create The C# Method.
First Of All Before Sending A Parameter Lets Start With Simple Ajax Call.
Go To "Default.aspx.cs" File & Create Method As Below.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static string sayHello()
{
return "Hello Test";
}
}
Try To Understand That, Say Hello Is Not Just A Simple Method In C#.It's A Web Method.
Now We Have Created The C# Method.Now What We Have To Do Is Call This Method Using AJAX.
In Order To Do That I'm Creating A Method In Java Script Section.
I Have Added Script Tag Just Below The Head Tag & I Have Created Method Called "SayHello". Inside This Method I'm Calling The C# Method Using Ajax Call.
<script>
function sayHello() {
$.ajax({
type: "POST",
url: "Default.aspx/sayHello",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
alert(response.d);
},
failure: function (response) {
alert(response.d);
}
});
}
</script>
Run The Project And See.
Now Lets Call The Function With Entered Value.To Do This We Should Call The Ajax Function With JSON Parameter & Change Web Method To Access A Variable.Lets Finish This Off.
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="jquery.js"></script>
<script>
function sayHello() {
var txtName = $("#txtName").val();
$.ajax({
type: "POST",
url: "Default.aspx/sayHello",
contentType: "application/json; charset=utf-8",
dataType: "json",
data: "{'Name':'" + txtName + "'}",
success: function (response) {
alert(response.d);
},
failure: function (response) {
alert(response.d);
}
});
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtName" />
<br />
<input type="button" id="btnSayHello" value="Say Hello" onclick="sayHello()" />
</div>
</form>
</body>
</html>
My Example Going To Be Very Simple. I Will Have Web Form To Enter A Name & Button Saying "Say Hello".
If You Click The Button Alert Should Come Saying "Hello <Name>".
First Of All Make Sure You Have Simple Idea About ASP.NET Web Sites, C# and JQuery.
Lets Get Into Works.
Create A New "ASP.NET Empty Web Site" & Add A New Web Form For That.
In My Case I have Created As Below.
Then Create The Text Field and Button As Below.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="jquery.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtName" />
<br/>
<input type="button" id="btnSayHello" value="Say Hello"/>
</div>
</form>
</body>
</html>
Now Lets Create The C# Method.
First Of All Before Sending A Parameter Lets Start With Simple Ajax Call.
Go To "Default.aspx.cs" File & Create Method As Below.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static string sayHello()
{
return "Hello Test";
}
}
Try To Understand That, Say Hello Is Not Just A Simple Method In C#.It's A Web Method.
Now We Have Created The C# Method.Now What We Have To Do Is Call This Method Using AJAX.
In Order To Do That I'm Creating A Method In Java Script Section.
I Have Added Script Tag Just Below The Head Tag & I Have Created Method Called "SayHello". Inside This Method I'm Calling The C# Method Using Ajax Call.
<script>
function sayHello() {
$.ajax({
type: "POST",
url: "Default.aspx/sayHello",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
alert(response.d);
},
failure: function (response) {
alert(response.d);
}
});
}
</script>
Run The Project And See.
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="jquery.js"></script>
<script>
function sayHello() {
var txtName = $("#txtName").val();
$.ajax({
type: "POST",
url: "Default.aspx/sayHello",
contentType: "application/json; charset=utf-8",
dataType: "json",
data: "{'Name':'" + txtName + "'}",
success: function (response) {
alert(response.d);
},
failure: function (response) {
alert(response.d);
}
});
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtName" />
<br />
<input type="button" id="btnSayHello" value="Say Hello" onclick="sayHello()" />
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
[WebMethod]
public static string sayHello(String Name)
{
return "Hello " + Name;
}
}
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