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C# Discussion Thread
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Feb 20th, 2009

Calling C# From JS

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I have serached on the internet,I found the links but none of them provide me the solutions.
One of the sites from that I refer-
http://sappidireddy.wordpress.com/20...n-aspnet-ajax/

Code-Behind Page

C# Syntax (Toggle Plain Text)
public partial class _Default : System.Web.UI.Page
{
 
    [System.Web.Services.WebMethod]
    public static int AddTwoNumbers(Int32 a)
    {
        int addtion = a + a;
        return addtion;
    }
}
public partial class _Default : System.Web.UI.Page
{
   
    [System.Web.Services.WebMethod]
    public static int AddTwoNumbers(Int32 a)
    {
        int addtion = a + a;
        return addtion;
    }
}

Source Tab

C# Syntax (Toggle Plain Text)
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
 
<!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>Untitled Page</title>
    <script type ="text/javascript" language ="javascript" src ="JScript.js">
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"/>
    </div>
        <table>
            <tr>
                <td style="width: 100px">
                    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
        </table>
    </form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>Untitled Page</title>
    <script type ="text/javascript" language ="javascript" src ="JScript.js">
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"/>
    </div>
        <table>
            <tr>
                <td style="width: 100px">
                    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
                <td style="width: 100px">
                </td>
            </tr>
        </table>
    </form>
</body>
</html>

JS File

C# Syntax (Toggle Plain Text)
function sum(int a)
 {    
        // call server side method
     pagemethods.AddTwoNumbers(a);
   }
function sum(int a)
 {    
        // call server side method
     pagemethods.AddTwoNumbers(a);
   }

Errors[color=#CC0000]1) Unknown server tag 'asp

criptManager'.
2)Element 'ScriptManager' is not a known element. This can occur if there is a compilation error in the Web site.

Plz help me out.

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sonia sardana

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Posting Whiz

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Feb 20th, 2009

Re: Calling C# From JS

Start by learning how ASP works.

Rashakil Fol

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Feb 20th, 2009

Re: Calling C# From JS

Click to Expand / Collapse Quote originally posted by Rashakil Fol ...

Start by learning how ASP works.

DangerDev

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