Parsing JSON Data Into List Of Objects?
Aug 17, 2011
I'm new at JSON and i am currently struggling with a problem parsing JSON data in a list of objects.The data that i am trying to parse is generated by the facebook graph api, and looks like this :
{
"100001621071794": {
"id": "100001621071794",
"name": "TEST1",[code].....
I know that this is not an array, because it is missing '[' and ']'. But when i replace the '{' and '}' with '[' and ']' i'm getting an error because of an invlaid matrix.
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Feb 15, 2011
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.
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May 6, 2011
I'm trying to parse this array using JSON.NET
[Code]...
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Sep 8, 2011
I am attempting to parse some json I am getting back from a service.For example it's returning
[Code]...
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Feb 18, 2011
parsing a JSON from a URL... Using the Nascar JSON file I am trying to place it into a listview or treeview. Displaying the drivers name, number and current position.
[Code]...
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Feb 3, 2012
I am attempting to deserialize a simple JSON array to .NET objects using the JSON.NET library in visual basic.
For the life of me, I cannot figure out what I am doing wrong here. My JSON string deserializes into appropriate objects (9 in total), but none of the properties are populated.
My code:
Public Class result
Public Property id As Integer
Public Property vote_percentage As String
[Code]....
When using JSON.NET you have to have constructor methods (i.e. Sub New) in order for the properties to get set during the Deserialization call.
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May 30, 2012
I have the following code to return a one-object JSON array,
Imports System.ServiceModel
Imports System.ServiceModel.Activation
Imports System.ServiceModel.Web
[code]....
The returned data is :
{id:1,Text:"TText test"}
How to make it returns :
[{id:1,Text:"Text 1"},{id:2,Text:"Text 2"}]
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Dec 16, 2011
I have a MySQL database with a table called "Locations" which looks a bit like this
id | name | other parameters
1 | shop1 | blah
2 | shop2 | blah
[Code]....
This works, but it is inefficient calling the database through the loop, how do I avoid this?
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Mar 19, 2012
I'm stuck on a problem that I haven't been able solve. I'm making a visual basic program that communicates with an SQL-database. The problem emerged when I tried to retrieve data from the database with the help of SqlDataReader and save data from every row to a list (Customer) with the help of Add-method. It turned out that eventually the list had correct number of objects, but the information was the very same in each object of the list.
[Code]...
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Aug 26, 2009
Is there more elegant syntax for reading/parsing Size and Point objects in an Xml document?
Source Xml Nodes:
<objSize>{Width=64, Height=64}</objSize>
<Location_X>20</Location_X>
<Location_Y>20</Location_Y>
[Code].....
I have control over both the source nodes and the parsing code... So I am just being too lazy with my XmlNode creation? Regardless is there any benefit to using XmlConvert v.s. using integer.parse (or .tryparse)?
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Jun 3, 2012
I have the following code to convert a list of messages into json [code]..
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Feb 5, 2010
I am using the Facebook Toolkit and making a request using FQL.Multiquery. I am using the following code which returns the correct data:
Dim query1 As String = String.Format("SELECT post_id, actor_id, target_id, message FROM stream WHERE source_id in (SELECT target_id FROM connection WHERE source_id={0}) AND is_hidden = 0", FBuserId)
Dim query2 As String = "SELECT pic FROM user WHERE uid IN (SELECT actor_id FROM #firstQuery)"
Dim queries = New Dictionary(Of String, String)
queries.Add("firstQuery", query1)
queries.Add("secondQuery", query2)
Dim result As List(Of Facebook.Schema.fql_result) = q.Multiquery(queries)
When I run this 'result' list is populated with the results of the two queries in XML but I am unsure how I can send this list to the browser in JSON. I am using asp.net MVC.
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Jun 2, 2011
I would like to create list of child objects from list of parent object. Like If i have list of bookingroom which has one member room then i would like to create list of room from it.
eg. code:
Dim BookingRoomList As List(Of BookingRoom) = New List(Of BookingRoom)
Dim RoomList As List(Of Room) = New List(Of Room)
BookingRoomList = BookingRooms.FillGrid()
[Code]....
Is there any short cut method instead of iterating over for earch?
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Jul 20, 2011
I'm having a bit of a 'brain doner' moment here
I have a list of Objects. Each of these Objects contains a list of other Objects (pseudo code) :-
Private Structure Object1
dim Name as string
dim ListOfObject2 as List(Of Object2)
[Code]....
I need to sort the list of Object1 by the Value in Object2. I have a comparison class which sorts Object2 by its Value nicely.
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May 9, 2012
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?
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Dec 22, 2010
I have 2 classes
Public Class Shipper
Public Property ShipperID As Long
Public Property CreateDate As DateTime
[Code].....
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Nov 23, 2011
I'm trying to create a list of days(integer) from a list of dates(date).
I tryed to do this....
[Code]...
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Feb 21, 2011
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.
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Jul 28, 2011
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]....
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Nov 12, 2010
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].....
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Sep 6, 2010
I have written a function which logs into an FTP server and recursively lists all of the directories within a given folder into an XML string (example below). I basically want to parse this into a listview item in the format as follows "Level1/level2/level3/level4" (standard file path). I have given an example of the xml below. How would I go about achieving this?
I have set up an xmltextreader, and then using a do while xmltextreader.read() I can check the current level of the node and add it that way, but it tends to only work half the time - is this the best approach?
[Code]...
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Jan 18, 2012
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.
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May 9, 2012
I have a node that is called AutoEnabled. If this is true the check state of the listviewitem needs to be checked.
vb
m_list.AddRange((From node In Doc...<Join> Select New ListViewItem(New String() { _
node.<AutoEnabled>.Value, node.<Chan>.Value, node.<irc>.Value, node.<password>.Value})).ToArray)
I know how to get the boolean, just not sure how to parse properties.
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Jan 24, 2010
I need two seperate lists, which every item is Integer, String, Bitmap - and one which every item is Integer, String String. However I don't know how to do this, or even where to look - I've googled for custom objects and custom object lists. What I'm trying to do is this.Custom Object1 is Integer, String, Bitmap Custom Object2 is Integer, String, String
In one thread I'll be adding items to List1(Of Object1), and processing them, and adding the results to List2(Of Object2), however I need to be able from other threads to look at the list and say only give me the items where Integer = (my thread ID), is this possible? Any help, or even links to information that would be relevant to this request would be helpful?
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Feb 7, 2011
I have the following jquery which is invalid:
{
"id": 12,
"heading": "heading goes here 3",
"content": "<p><span style="color: #ff0000;">content</span> <u><strong>goes </strong></u><span style="color: #ffffff;"><span style="background-color: #ff0000;">here</span></span> 3.</p>"
}
I am generating this with asp.net (vb.net) from data stored in a database. I think I need to somehow escape the double quotes within the content section of the json data. How do I do this?
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Jun 23, 2011
At the moment, I am building json data as follows:
<%@ Page Language="VB" Debug="True" EnableViewState="false" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
[Code].....
Is this the preferred method of creating JSON data using .NET?
I think I am supposed to use asmx web services with arrays converted to json? But all the examples I have seen are in C#.
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May 5, 2011
I have a Customer JSON object created which has value as below:[code]I need to get this data in the Handlers/CustomerHandler.ashx to do some DB operations.[code]
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Jun 22, 2010
I have successfully returned data from a ASP.Net webservice in JSON format (using a service method that required no parameters) but have struggled with making a webservice call that requires a parameter.
Webservice:
[Code]...
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Oct 8, 2010
I have to pass my Json data in a particular format. My app is coded in vb. The following is my code :
[Code]...
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Mar 23, 2008
unordered text file of 3 columns to assign into 2 arrays. I've been given a graphing component which expects a two dimensional array for a scatter graph for the set of values in the last column.
How would I parse through the list given an indexed array of 215 possible 'zone alarm locations' and if an alarm log list item, of which there can more than one for any given zone location, compare in the two dimensional array any previous value and replace it with the higher valued one? The following are my declarations for the 2 arrays. It isn't clear to me why the array for the scatter data was defined as (999,1) knowing there are only 215 possible x values (alarm zone locations)
[Code]...
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