I am having a heck of a time with some very simple json. I have a very basic VB.NET webform which which writes out the contents of a datatable serizlized with JavaScriptSerializer.
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On the jquery side I am doing this.
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This is returning "invalid json"
Here is the output
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I have an assigment where I must send queries to the database and the returns data. I would like to convert that data to a json and then use it with jQuery
My idea is make an array (żarrayList?) and then convert it to json.
How can i use json with asp.net vb? I'm not allowed to use a webservice yet
I'd like to build a simple json looking like this: {"Count" : "55", "total" : "125,55"}On my vb method i'm doing this to encode it:Dim json As String = "{""Count"" : "" " & intCount & " "", ""total"" : "" " & intTotal & " "" }"But I think Im missing something to escape the quotes, when my browser received it, it looks like this: {"d":"{"Count" : " 5 ", "total" : " 55 " }"}making it unreadable for jQuery.
View 1 RepliesHow can I go from an SQL statement to AJAX?I know this is a broad question so here is what I am trying to do and what I have tried.
I have using asp.net(vb) connected to the database and put the information in a dataset and datagrid.(I don't want to use a datagrid anymore)
UPDATE 2: I did not mention that I do not get the error below in Chromium, but I do get it in IE8.
UPDATE 1:
Response Headers:
HTTP/1.1 200 OK
Date: Fri, 20 May 2011 15:40:23 GMT[code].....
Why does that happen and how can I stop the error message from appearing?
I need to return json data from the server, which can be used on the client side and I am not sure the best way to format the json data.
So basically, What is the best way to format the json data to include:
key/value pairs so they can be looped through at clientside (loop via jquery), a count of the number of id/value pairs which can be used at clientside for other purposes (used via jquery).
I have a WCF service defined as follows:
Imports System.ServiceModel
Imports System.ServiceModel.Web
<ServiceContract()>
[code].....
incorrect technical words used, I'm new to AJAX/Jquery.I have a function with AJAX in it. It is supossed to execute a serverside function, but it doesn't do anything. I have checked my code multiple times. I use similar code in a different location, and that one works fine.Here is the function with AJAX:
function pass_on() {
hide_div("#outer_layout", 500);
get_din();
[code].....
I'm trying to pass a date into a DB Query function backended by VB.NET but am having problems with the webside of things.[code]
View 2 Repliesmy problem is that my company does not want to serve up the .json MIME type, so I have to use ASP.NET to fetch the JSON file from the file server. Currently I have jQuery that does a getJSON and traverses the JSON object to build certain elements of the page. Is there a way I can use ASP.NET (VB) to give the object to my jQuery script after I fetch it?
View 1 RepliesI have a User Control which renders a simple drop downList into the page.By default, only certain values are returned depending on User Details, but the user may request a "full" list.I'd like this full list to be generated by pressing a reload button.Being new to .NET I am struggling to get this to work and not really understand the results I get when Googling or finding stuff on this site. Is Classic ASP I'd have made a page that renders this and called it using jQuery
[Code]...
I've found this link: [URL]..Using-jQuery but am unsure exactly what it is suggesting, mainly I think, because I use VB and don't completely understand how to convert that C# code there.Using .NET 2.0, jQuery and VB, does anyone have any suggestions on the simplest way to accomplish this?
I accept both C# and VB.NET If you visit this [URL].. and then click on the link like the image below you'll see in-line pop-up DIV which displays a busy status of Ajax callback before it displays the information. So, the information is not there yet until you click on the link.
I'd like to do the same but ASP.NET and jQuery. If there's any place to help me get started on the right track?
[URL] Response when viewing URL: {"Status":"OK","Message":"0","Info":"(none)"} Using JQuery how do I pull from that? I get how you do POST and sending but little lost has to how to pull from that. Do I use GET? Am I doing something like $.get("URL HERE"...?
View 3 RepliesI am using jquery so using ajax to post data, but for some reason when i click on submit, the page doesnt go from aspx to aspx.vb on the back side.here's my code -
$(document).ready(function() {
$("#btnsave").click(function() {
var firstname = $("#" + '<%=firstname.ClientID%>').val();
$.ajax({
[code]....
new_class is my webmethod in the vb.net side. Now if i put an alert in the btnsave onclick function, i see the firstname value in the alert. But the page does not call the new_class function after that.
The code below works "correctly" as far as sending the email address to the SaveEmail URL and it gets saved correctly each time I change the drop down. However it only outputs the "Successful" message once, no matter how many times I change the value in the drop down. The "data" that is returned is "Successful". I would like to show the message for a couple seconds, then fade it out. It works correctly the first time I change the drop down, after that the change happens and the value gets saved, but the "Successful" message doesn't display.
jQuery code:
$('#AgentEmails').change(function() {
var NewAddress = $('#AgentEmails').val();
$.post('SaveEmail.aspx', { email: NewAddress }, function(data) {
$('#SelectMsg').html("<b>" + data + "</b>").fadeOut();
});});
HTML code:
<select ID='AgentEmails' runat='server'>
<option value="test@test.com">TEST</option>
</select><span id='SelectMsg'></span>
What needs to be changed in my code to make this operate correctly?
[URL] Using this I have managed to use Server Side Web Methods to perform actions with AJAX.In most instances, I just need it to do stuff (save things to a database for example) so don't need to do anything with the response, but now I've come across a situation where I do, and I can't work it out!The Web Method returns a JSON object, which looks like this:
{"d":"[{"validDetails":"True","lateAlert":"","LoginResponse":"Logging in Jamie at 16:53 please wait"}]"}
This is the output shown from Firebug. I am not sure what the 's are, but bear with it...The AJAX call and attempt at outputting this response is:
$("form").on("submit", function () {
var LogonObject = new Object;
LogonObject.password = $('#password').val();
[code]....
And several other variations from info I have found on Google and SO, but it seems to treat the results variable as a string, not an array, and the output I get on the alerts is each individual character, ie;
[, {, ", v, a, l, i, d, D... etc
So I wondered if results needed to be converted to JSON again (though I don't know why) so I tried
results = $.parseJSON(data.d)
But that didn't work either.
EDIT, the code which generates the response (missing out tons of logic, but this is the important bit):
Public Class OutputObject
Public validDetails, lateAlert, LoginResponse As String 'content of JSON output'
End Class
[code].....
I am using $.ajax call for download excel from .aspx page. But ajax throwing an error after Response.End. This is the code I used. Control is processing till Response.End() then alert(textStatus); giving parser error.
MasterPage.Master
$.ajax({
type: "POST",
[Code].....
I am using $.ajax call for download excel from .aspx page. But ajax throwing an error after Response.End. This is the code I used. Control is processing till Response.End() then alert(textStatus); giving parser error.
MasterPage.Master
$.ajax({
type: "POST",
[code].....
I have a piece of JQuery AJAX that calls a VB.NET code-behind (class) that returns string data. It grabs some latest stats on a particular server. Now the code works, but the first time I press the refresh button data is returned and the alert "Refreshed" is shown on screen.
But if I press it again, the alert box "Refreshed" is shown twice, I click again three times! and on and on, until the time-out kicks in.It seems to be coming from the AJAX call and no where else. I'm at a loss at what could be calling this, I've tried deleting the data returned after success but no joy.
function RefreshServer(btn,div,id,ip) {
$('#aRefresh'+id).html("<img src=images/refreshServer.gif border=0 align=absmiddle />");
$("#"+btn).click(function() {
$.ajax({
[code]....
The following code populates a second dropdown when the first dropdown changes (i.e. cascading dropdowns). However, the Ajax call isn't firing, and I can't figure out why. I'm not getting any syntax or runtime errors. When in debug mode, the GetPlans action is never being called. The inner alert is never called, but the outer one is. To make matters worse, this same setup is working elsewhere in my app! Here's all the pertinent pieces (let me know if I've left out some important details):
[Code]...
var paramStr = $('#id1').val() + '|' + $('#id2').val() + '|' + $('#id3').val();
paramStr = '{"searchCriteria": "' + paramStr + '"}';
$.ajax({
[code].....
I have a main page that loads a content of a div:
var content = $("#content_layout");
//some code here
content.load("claim_form.aspx?claim_no=" + file_number);
The claim_form.aspx has a drop down, and based on that drop down it should show the apropriate input fields. I set the index to be 1 and automatically load the first set of inputs. Here is some code to explain it better:
$("#request_type").change(function(e) {
index = document.getElementById("request_type").selectedIndex;
if (index == "0") {
[code]....
i have a jQuery AJAX webmethod in ASP.Net that works perfectly fine when tested locally. but when uploaded to the server, sometimes it works sometimes it doesnt. when i debugged the code with firebug i see the the webmethod gets called but jumps right away to the error section of the ajax script.
jQuery code:
<script type="text/javascript">
$(document).ready(function () {
//get current date
[Code].....
I have an ASP.NET MVC controller action with the following VB.NET signature:
[Code]...
If I'm trying to send an Ajax POST in jQuery to the ClosestCities action, what should my request look like? When I use the following code to POST to this action, in the debugger window of VS, position.longitiude and position.latitude are equal to 0.0 (0D):
[Code]...
load the contents of a query from a dataTable Adapter into a datatable?
View 2 RepliesWe're working on a big ASP.NETVB.NET website project. I need to populate three dropdownlists. To last two are independent of the previous ones. The population data comes from an SQL Server. I'd have no problem doing this with code-behind with post back but we don't want any PostBacks so I started to develop this in AjaxjQuery.
[Code]...
I'm trying to use the JavaScriptSerializer to work with this code. However it crashes when it reaches the last line;
Dim json As New String(sr.Serialize(dt))
I get this error message;
A circular reference was detected while serializing an object of type 'System.Reflection.Module'.
I want to be able to turn a datatable or dataset or the results of my SQL queries into JSON - purpose is for a WCF service which will not do it.
View 2 Repliesi have the following code, please let me know where m goin' wrong..
VB
For Each dr As DataRow In dvItems.Table.Rows
strItems &= "'" & dr("ItemTitle") & "',"
Next
[code]....
while debugging in firefox with firebug data is showing null...What i'm doin' here ?
Edit :Autocomplete.js needs data in this format 'mouse','keyboard','led'Before i was doin' this without JSON, it was working fine.
I would like to send json data from a HTML table to the ASP.NET code-behind and update the data in and SQL Server database. The code and JSON for the TableProductToUpdate() is below.
function UpdateProductTable() {
$.ajax({
type: "POST",
[code].....
