I have a ASP.NET MVC 1.0 app.I have a listbox on the page and I want to pass an array to the webpage so that
javascript can use the array to do some processing depending on the item picked in the listbox.So I thought the best way is to pass JSON data to the webpage on load.So what is the best practice on how to do this?Can you please give me a brief step by step process.How do pass the array as JSON and how do I access it by index?
I have a text file named gisQuery129.json that is created using Json.NET - [URL] There is an example on how to create a JSON file and I have done that successfully, but I want to read the file on a page load event and add the values to .NET textbox controls for input values in a query. The created file looks like the following:
{
"myData": {
"randomNumber": "129",
"Application": "MyMapApp",
"FeatureId": "ALL",
"Feature": "ALL",
"spatialQuery": "FEATURE_ID= '11111' AND REQ_SEQ_NUM= 1 AND RAND_PARAM= 129 OR FEATURE_ID= '22222' AND REQ_SEQ_NUM= 2 AND RAND_PARAM= 129"
}
}
I want to read the data in the above sample JSON data and then populate my textboxes something like this:
txtRandParam.text = "129"
txtApplication.text = "MyMapApp" and three more text boxes after that.
we are creating a custom content management and out portal page is bit bulky it is about 60Kb without images.
and during loading the page in some browser we can see some parts of site load faster than the other parts of the site where as we want to indicate (or instruct the web server) to load some of the areas first then load rest of the page.
is there any particular setting in IIS for is there any particular method in classic asp for doing that?
also I have the same question in asp.net.
I've got code like this in a download page
Code:
Imports System.IO
Imports System.Data
Imports System.Data.SqlClient
Partial Class _Download
Inherits System.Web.UI.Page
[Code] .....
That is called like this:
Code:
function excelGrid(strId, blnDoReader) {
var wesPC = $("#" + strId);
var objWebParam = {};
var arrGrid = [];
[Code] ....
I am modifying this now - passing in the variable strWebParam which is the "stringified" version of a JSON array. And then in the function below I am trying to get the JSON-string into the POST. I tried the INPUT/TYPE=HIDDEN method you see below - but that did not work (cut off the string - it's got quotes in it)
Code:
$.downloadExcel = function(url, data, source, method, callback) {
var inputs = '';
var iframeX;
var downloadInterval;
if (url && data) {
[Code] ....
When I do a regular AJAX post for something I use the "data" element of the $.ajax method like this
Code:
var strWebParam = $.toJSON(objWebParam);
$.ajax({
type: "POST",
url: "WebService.asmx/BootPage",
dataType: "json",
[Code] .....
How is that DATA: STRWEBPARAM getting passed back to IIS??
It works when i pass the querystring on the browser as this: http://localhost:51765/foo/foo.aspx?ID=c516f4f4-36a9-40a7-baad-d2419ea631b9 want it to work when the page load not when i pass the querystring on the browser.
<asp:SqlDataSource ID="categoriesDataSource" runat="server"
connectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [CategoryID], [Name] FROM [Categories] WHERE ([UserId] = @UserId) ORDER BY [Name]">
[code]...
i have a page, when the page loads, nothing shows up, when i pass the querystring on the browser as [URL]
I want it to work when the page load not when i pass the querystring on the browser.
Here is the code:
[code]....
[Code]....
[Code]....
I have some textboxes and a table of data created client side that I want pass to a controller as JSON.
I want to use Jquery to enumerate the table.
Assume I have 2 textboxes called name and age. Assume a table with 2 columns. one column with class called phonetype and one column class called phonenumber.
So how do construct the JSON from this?
I have the following actionresult in my controller;
[Code]....
and this jquery script to print values pass from controller in textboxes.
[Code]....
how to pass this via Json.Tried doing something like
var data = { Item1: "test", Item2: 5 };
var JSONdata = $.toJSON(data);
However that did not work. Although simply changing wcf to expect an object with two properties such as Item1 and Item2 will work. Here is example I'm using... I'll trim it a bit to make it easier to read:
function Post(data, url)
{
$.ajax({
type: 'POST',[code].....
I have the following JSON class I am intending to use to perform management calls on my database asynchronously:
<script type="text/javascript">
var CalendarManager = {
defaultOptions: {
staffcode: 0, // required
date: 0, // required
[Code]....
Basically, my question is: how do I specify optional parameters to a WebMethod when providing JSON data?
I know I can reduce the parameters down to just the required values, and then use HttpContext.Request.Params to read the values of optional paramaters, but I would have thought the way I have tried here should have worked.
EDIT
The XMLHttpRequest.responseText value for the error is:
Invalid JSON primitive: staffcode.
This is throwing me even more off the scent of the problem :(
As it is now I create a JavaScript object and then stringify it, put it in a hidden textbox and my code behind can read this string. I then use JSON.NET to parse the string which works fine. I now try to use ajax to post it to my web service but have some issues with how to send the string. I have tried many ways but gets the common errors like
Invalid JSON primitive: myString.
So I checked this out [URL] and it works with hard coded values but I want to use a variable.
JavaScsript to create the object:
for (var i = 0; i < results.rows.length; i++) {
var row = results.rows.item(i);
var customer = new Object();
customer.id = row['id']
customer.name = row['name']
var customerString = JSON.stringify(customer);
$.ajax({
type: "POST",
url: "synchronise.asmx/synchroniseCustomers",
data: "synchroniseCustomers: " + customerString,
contentType: "application/json; charset=utf-8",
dataType: "json",
error: function (xhr, status) {
alert("An error occurred: " + status);
},
success: function (msg) {
alert("success");
}
});
}
WebMethod:
public void synchroniseCustomers(string customerString)
{
JObject o = JObject.Parse(customerString);
string id = (string)o["id"];
string name = (string)o["name"];
If I use data: '{ FirstName: "Dave", LastName: "Ward" }'
in the example above it works but I wish to pass on a string instead.
This is regarding your article on
[URL]
I have a json object with multiple Name & Value pairs, I am using example on above given link but it is not calling the Web Method.
var jd = [];
jd.push({ ID: HArr[j], Val: Str });
var jd = [];
[Code].....
In my class I have a Web Method defined as :
[System.Web.Services.WebMethod]
public static jsonData PassJsonData(jsonData jd)
{
return jd;
}
I have a text box on page load, loads a text value. I would like on the first instance of the page load for another textbox to equal to this value. As I have a gridview on the same page to update the textbox value does not get updated.
Essentially, if provide me with a VB script to obtain the value of the textbox on page load to pass to another textbox default value only on the same page.
I have an ASP.NET (VB.NET) page that uses the Cascading Drop Down extender control. The webservice currently has the datasource (e.g. an XML file) hard-coded, based on the CCD example. What I would like to do now is based on the the logged on user, and their Active Directory credentials (at Page Load) programatically select/define which of multiple XML stored on the server should be used by the CDD control. All of the code-behind has been written already, I'm just having a hard time passing the variable generated during Page Load function to the CDD webservice. (Note: The CDD control loads immediately)
[Code]....
i want to use MVC 2 actions to pass JSON data to a 3rd party application via a URL.The URL will be in the form of http://www.abc.com/controller/action..I am using JSonResultHow can i test the output of this URL to ensure the JSON is properly formed..
View 2 RepliesI try to use the jquery + json to get all elements in form and build a JSON var to post in a ASP.NET MVC method.
[Code]....
It method get all fields in a form and build a JSON, but it dont put JSON inside JSON.
Example:
If i have the follow form:
<input name="person.name"><input name="person.age"><input name="person.address.street">
The serialized string build a JSON like this
{ "person.name": "??", "person.age": "??", "person.address.street": "??" }
I need a plugin or some function to generate like this:
{ "person": { "name" : "??", "age" : "??", "address":{ "street": "??" } } }
I am creating one Json array object and trying to pass it in MVC controller action method but i am getting null paramerter; as per my knowledge json only maps .net primitive datatypes.... so it assign null value.
Note: when i have look at request object i found that there are three parameter of created array. But how to get that value as parameter of function?
I wanted to pass a certain value from one webpage to another. It will be used only in the web page it will be passed to, so i am thinking that passing that as a session attribute would not be a right method..
Is there a better way than using a Query String in the URL where the user will not be able to see what is being passed.
i want to pass a string value from one page to another.Also i have some text boxes and the values entered in it needs to be passed to a new page.How do i do it?
I have a string S
String S = Editor1.Content.ToString();
i want to pass value in string S onto a new page i.e Default2.aspx how can i do this in ASP.net C#
I am trying to do Response.Redirect inside usercontrol but it is not working and same page is showing.
Can anyone explain how to pass it from useercontrol to .aspx.cs page and do the redirect.
I have a webpage and on that page i load a usercontrol programatically
now i need to pass a value called fileName from webpage to the usercontrol
but filename is empty and when i put the flvControl.fileName = config.applicationURL & "/video/" & video.folder & "/" & video.videoFile
before flvControl = CType(LoadControl("media/flv.ascx"), mysite.flv) i get object reference error
code on my user control
[Code]....
i need to pass the roll no from one page to another and have written the code but the code is not working
in the first page
Response.Redirect("userview.aspx?RollNo=" & TextBox1.Text)
then in the target page
dim rollno1 as string
Public Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
I have some vales in my web page which i want to pass into my next pasge for further work.
how to find out a good method to pass my textbox values to next opening window.
i am loading a usercontrols dymaically, i need to create a event listener so any controls that i load will pass back a int id to my aspx page. what is the best way to create a dynamic listener?
Control FeaturedProductUserControl = LoadControl("FeaturedProduct.ascx");
Controls.Add(FeaturedProductUserControl);
PlaceHolderLeftMenu.Controls.Add(FeaturedProductUserControl);
I hv Declared two Master page one Is Base and Derived.. Base Page Load is working but when i hv written load controls in Derived Page Load Using C# it's not working..
View 3 Replies
