How to pass a value from jquery to codebehind VB.NET

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Hello experts,

Can you please give me a gist on how to achieve below?

I have page1.aspx where in there is an Iframe that runs callback.html

In callback.html I have a string "TESTPASSED"

This string should be passed to Page2.aspx

Page1.aspx-->callback.html-->
Execute javascript Test() function and Pass string value --> Page2.aspx

Your help is much appreciated.

What I have tried:

Function Test(){
var jsonInput ="TESTPASSED";
    $.ajax(
                            { 
                                type: "POST",
                                dataType: "text json",
                               url: "Page2.aspx ",
    	                      data:"{mystring:"+jsonInput+"}",
                                contentType: 'application/json'
    });
	
}



And my Page2.aspx code behind is as below 

Public Class RequestResponse
    Public temp As String
End Class

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Dim resp As RequestResponse = New RequestResponse
Dim result as string = Request.Form("mystring")
//Not sure how to get the string value here TESTPASSED

End Sub

Posted 20-Apr-17 8:30am

sudevsu

Updated 21-Apr-17 6:21am

v3

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Comments

F-ES Sitecore 21-Apr-17 7:06am

"data" needs to be something like

data:"{mystring:'TESTPASSED'}"

in your aspx code you'd then use Request.Form["mystring"]

sudevsu 21-Apr-17 9:53am

I did try that way too but no luck. result is always showing nothing in server side while debugging.

F-ES Sitecore 21-Apr-17 10:11am

Either the ajax code isn't being called, or the call is attempted but there is something wrong with it

https://forums.asp.net/t/1982579.aspx?Using+the+browser+s+dev+tools+to+diagnose+ajax+problems+and+other+things+

sudevsu 21-Apr-17 10:45am

Oh No Ajax is being called. Because control is going to my server side and I have my ajax in try catch block so I am sure it is called but request.Form("mystring") is always nothing. Can't figure it out why?

F-ES Sitecore 21-Apr-17 10:57am

Look at the link I posted and use the browser tools to see what data you are sending to the method.

sudevsu 21-Apr-17 12:21pm

thank you

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sudevsu · Accepted Answer · 2017-04-21T06:21:00

This did the trick to me. thanks again F-ES Sitecore

$.ajax(
                             {
                                 type: "POST",
                                                                 data: 'mystring=' + myInput ,
                                                                url: "Page2.aspx",
                                 success: function (result) {
                                     debugger;
                                     alert("success :" + JSON.stringify(myInput));
                                 },
                                 error: function (xhr, status) {
                                     debugger;
                                     alert("fail " + status);
                                 }
                             });