How to pass parameter from javascript to code behind?

Question

i tried pass parameter from jscript to code behind, but it don't work. My code:

[C#]

[WebMethod]
public static String sendEmail(String str)
{
     ...
     msg.body = str;
     ...
     return str;
}

[jscript]

If i use function alert, it return null

function onOkClickButton()
{
    var content = "Hello";
    alert("<%=sendEmail(" + content + ")%>");
}

if i use PageMethod, my email's body is null

<asp:ScriptManager enablePageMethods="true"></asp:ScriptManager> 
function onOkClickButton()
{
    var content = "Hello";
    PageMethods.sendEmail(content, onSuccess, onError);
}
function onSuccess(text)
{
    alert(text)
}

function onError(text)
{
    alert(text)
}

Can you help me?

Have you done this: <asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" EnablePartialRendering="true" runat="server" /> — fenix2222
– fenix2222, Commented Jul 3, 2012 at 23:12

Jaime Torres · Accepted Answer · 2012-07-03 23:52:20Z

1

jQuery ajax would be the easiest method, IMO:

function onOkClickButton()
{
    var content = "Hello";

    $.ajax({
      type: "POST",
      url: "urlToPageHostingSendEmail.aspx/sendEmail",
      data: { str: content }
    }).success(function( msg ) {
      alert( msg );
    });
}

answered Jul 3, 2012 at 23:52

Jaime Torres

10.5k1 gold badge50 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Trong Lam Phan Over a year ago

Thank you, Function sendEmail was placed in MasterPage. But when i set url: "MasterPage.master.aspx/sendEmail", it don't work.

Jaime Torres Over a year ago

Having it in the master page feels dirty to me, and I'm not 100% certain it will work, but it very well may. I'm not currently in a position to test it. This page is a good resource for properly configuring WebMethods in ASP.NET applications

Community · Accepted Answer · 2017-05-23 12:04:43Z

0

You could use jquery to call your page method:

call page method without script manager from jquery

or

http://encosia.com/using-jquery-to-directly-call-aspnet-ajax-page-methods/

Also have a look at this video:

http://www.highoncoding.com/Articles/430_Calling_Page_Methods_Using_JQuery_and_Returning_JSON_Result.aspx

edited May 23, 2017 at 12:04

CommunityBot

11 silver badge

answered Jul 3, 2012 at 23:16

fenix2222

4,7504 gold badges39 silver badges56 bronze badges

Collectives™ on Stack Overflow

How to pass parameter from javascript to code behind?

2 Answers 2

2 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related