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).
Basically, Is it possible to get a grids row count using jquery.if my grid has 20 rows in it not including the header or footer, i want to now the count of actual rows, this will tell my users how many tasks they have in their list.
View 3 RepliesI 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
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 have a WCF service defined as follows:
Imports System.ServiceModel
Imports System.ServiceModel.Web
<ServiceContract()>
[code].....
my 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 Replies[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 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.
CODE:
On the jquery side I am doing this.
CODE:
This is returning "invalid json"
Here is the output
CODE:
i 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 have a json object from the facebook api
"comments": {
"count": 2
},
"updated_time": "2012-05-24T02:46:36+0000"
The entire json object is a dynamic object.
I can easily read the value of the updated_time with:
post.updated_time
However this returns the count of items in the collection, not the value of the "count" property in the json object.
post.comments.count
Is it possible to get the value of post.comments.count without it using the "count" keyword?
I should note that the JSON is much larger than this. If there are actually comments there is another collection of the actual comments so something like post.count(0) would not work in that case.
I am been stuck on this for 3 days now...I have been accessing the twitter api to pull a user_timeline for a list of users and the json that comes back is impossible to work with. I tried to deserialize it using javascriptserializer and get an error:invalid object passed in , ':' or '}'
Now this is frustrating since I expect the json being returned to be error free. Then I tried json.net and split the posts using string.split and tried to convert each post to Jobject or jarray. for Jarray I get
'unexpected end of content while loading jArray
[Code]...
Now I have formatted the code here and not pasted the whole file but it does look like valid json to me and I do not alter anything after receiving the stream from the twitter api. Can someone please point me in the right direction? I really need to get this stuff parsed?
I'm strugling the whole day with the next JSON string
{
"0":{"link":"afbeeldingenplaatje1.jpg"},
"1":{"link":"afbeeldingenplaatje2.jpg"},
"2":{"link":"afbeeldingenplaatje3.jpg"}
}
How can i deserialize this? What's wrong with the next code (vb.net)
Public Class DataString
Private m_link As String
Public Property link() As String
Get
[CODE]...
It returns always an empty result.
how to receive and send back json. Hope someone can help me on this. I understand by examples.
On my clientside, I am sending a ajax json string "name":"theName" to the server side and would like the server side to return a string saying "welcome &name ".
Client-side code
<!DOCTYPE html>
<html>
[Code]....
Below is my JSON formated String
{"AliasName": "ysiCountryInfo", "DataClass": {"Description":"United States 111","Code":"usa","WriteOffTaxPointAdjustment":0,"IndexationRounding":6}}
I would like to deserialize object into below class
[code].....
I have a JSON response from a web service that I need to be converted to an object then to an array. My response is similar to the one below:
{"status":{"error":"NO","code":"200","description":"none","message":"Request ok"},"geolocation":{"lat":"38.89515","lng":"-77.0310"},"stations":[{"country":"United States","regPrice":"0.00","midPrice":"0.00","prePrice":"0.00","streetAddress":"1401, I St[code]....
I am doing this is VB.NET within a console for now. Basically I am trying to create a simple way to test my API calls and output the information. What I am trying to accomplish is having to loop through the JSON array and list the stations.
How can I convert a JSON string to an array OR a JSON string to XML in VB.NET? I know how to do this in C#, as I have read dozens of articles on it, however, I am unable to figure out how to achieve the same result in VB.NET.
I'm using the System.Web.Script namespace via System.Web.Extensions.dll (from Microsoft).
I'm willing to use an additional DLL file if needed.
I'm sure this has been asked before but I'm not finding quite the information I'm needing so I thought I'd post this.
I've written a PHP script that returns a simple JSON object that looks like this:
{"status":"success","level":"admin"}
I'm doing a standard web request that submits the required data to the script over the internet and that's working fine.
Now, I want to use JSON.NET to pull out the individual variables so I can know what the values of "status" and "level" are. The problem is, I have no idea where to start.
I'm doing this in VB.NET (on the .NET Compact Framework).
this is my class:
Public Class Employeeclass
Public Property Fname As String
Public Property Lname As String
Public Property Bdate As Date
End Class
[Code]...
The following code checks each sentence in the listbox and if certain conditions are matched it add a piece of data to the list new question. Each input from the user is checked against each sentance in the listbox and if a match is found (based on the conditions) only then the data is added to the list and the loop exits. My problem now is that for each itteration cycle In_dep_token_pair.Key and trigger_dependency_token_pair can not be Subject and DirectObject at the same time. Is there any way to test for the next item in the keyvaluepair within the same itteration cycle? Something like trigger_dependency_token_pair(current item).Key = "Subject" and trigger_dependency_token_pair.key = "DirectObject".
If (Input_pair.Key = predicate) And (In_dep_token_pair.Key = "Subject" And trigger_dependency_token_pair.Key = "Subject") And _
(In_dep_token_pair.Value = trigger_dependency_token_pair.Value) Then
If (In_dep_token_pair.Key = "DirectObject" And trigger_dependency_token_pair.Key = "DirectObject") Then
If (In_dep_token_pair.Value = trigger_dependency_token_pair.Value) Then
[code].....
I am accessing the facebook api and using the json.net library (newtonsoft.json.net)I declare a Jobject to parse the content and look for the specific elements and get their values. Everything works fine for the first few but then I get this unexplained nullexception error " (Object reference not set to an instance of an object)Now I took a look at the declaration but cannot see how to change it. Dim jobj as JObject = JObject.Parse(responseData) message = jobj("message").tostring
The error occurs at the last line above.I check to see if message is null and then look for the next desired field as follows
[Code]...
This is one example where "message" does not appear in the first few lines but appears later. So what I do is look for position of message and description and which ever is first go and get that and if I get an error or the fields do not return anything, I try and parse by regex and even that is not working right.
In my VB.NET code behind, I've created a multiple name/value pair cookie like this:
Dim UserCookie As HttpCookie = New HttpCookie("UserInfo")
UserCookie.Values.Add("UserNumber", Me.UserNumber.Text)
UserCookie.Values.Add("Password", Me.Password.Text)
UserCookie.Values.Add("UserName", Me.UserName.ToString)
Response.Cookies.Add(UserCookie)
Now, what I need to do (somehow) is read that 'UserInfo' cookie in javascript and be able to extract those values at will. Most of what I'm finding out there doesn't quite do what I need to do.I'm trying to do something like this:
var MyValue = ReadCookie("UserInfo", "UserName")
And MyValue would equal whatever the user had typed into the textbox.
Normally when I populate a combobox I do so by binding it to a datatable and assigning a display member and value member. I would like to do the same thing by adding pairs of items in code.I tried using a key-value pair, but that didn't work. The combobox displayed both the key and the value. I would like to have it just display one of the values and leave the other one invisible to the user, but available to me as a key.I thought about creating a custom class with two properties - one to use as the display member and the other to use as the value member. But before I re-invent the wheel I thought I'd check to see if there's already something there in the framework that I'm missing.
View 8 RepliesVB2008. I would like to use a Dictionary(Of TKey, Tvalue) where the key is a pair of Integer (and TValue is String, no problem). How can I declare it ? How can I add an item ? How can I retrieve a value, knowing the key ? I can do it when the key is an Integer, but with a pair of Integer I am lost.
View 2 RepliesI am trying to parse a particular attribute/value pair from XML in VB.NET. The XML is originally a string that looks like XML but it needs to be converted to an XML-like datatype or structure before I can parse it. How can I convert this string into XML, and then parse the info that I need?
[Code]...
I'm using VB.Net's RijndaelManaged (RM) to encrypt files, using the RM.GenerateKey and RM.GenerateIV methods to generate the Key and IV and encrypting the file using the CryptoStream class. I'm planning on saving this Key and IV to a file and want to make sure I'm doing it the right way. I am combining the IV+Key, and encrypting that with my RSA Public key and writing it out to a file. Then, to decrypt I use the RSA Private key on this file to get the IV+Key, split them up and set RM.Key and RM.IV to these values and run the decryptor.
Is this the best method to accomplish this, or is there a preferred method for saving the IV & Key?
I have lots of TV Shows on my Hard Disk and every week I update that HD with the new episodes that have aired (I also download the .srt - subtitles - files) .
To do this, i have to take each pair of file (the .mp4 and .srt files) and put them in the HD folder (Ex: E:Tv ShowsDr HouseSeason 8). I have to do this lots of times and I waste several time to do this..
So, I was thinking, why not making a VS application to do this job?
I select all my .mp4 and .srt files from the week (witch are contained in a folder) and i drag them into my application witch should check the names of the files (they both have the same nome, Ex: House.S01E01.mp4 and House.S01E01.srt) and, by the first name ("House") search a hard drive witch I choose, and move my selected files to the "House" folder (where I have all the seasons of the Tv Show).
I'm trying to modify an app.config file that is not part of my .net application.My key needs to be unique and appear under a static key (Server1 or Server2) as the other application reads these values line by line, associating the database(n) value with the server(n) value.I cannot see a method of using the standard app.config methods against an external .config file, so I'm using the Xml Document class.[code]But cannot find a method of retriving the Key to check if it exists and more importantly increment the value?
View 1 RepliesI am looking for a way to store a key-value pair in the application settings. From what I have found, key-value pair dictionaries are not serializable, and therefore cannot be stored in the application settings.Currently I have tried all sorts of dictionaries and collections and all of them work, until I restart the application, then all the settings are gone.
View 2 RepliesI have two experimental web services. One is an asmx contained within a .net web application. The other is a WCF service library being invoked from the web application.The asmx basically does everything I need, but I think WCF would be better, except that it doesn't do anything as I would expect after fiddling with the asmx service.For example, the same method behaves differently in each:
' ASMX
<WebMethod(BufferResponse:=True, EnableSession:=False)>
Function Test(aObject as Object) as Object
' object will have been successfully serializaed into a dictionary
[code]...
Needs to be a component of some sort. No additional installation needed.The datastore needs to be on the local hard drive.I am using VB.Net for a desktop app running Windows XP through 7 so it needs to callable by that environment.It needs to replicatable. If I have four copies of my app running on the network, each local copy of the datastore needs to replicate with the others. As close to real time as possible.
View 3 Replies