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?
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.
When a json result is returned by the controller the object name seems to be missing, I normally wouldn't mind but the flexbox jquery plugin requires the json result in a particular format.
[Code]...
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.
I am trying to return a json string via jQuery of an object using the following function. The problem I do not seem to be able to overcome is my json result comes out the other end wrapped in double quotes.
[Code]...
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.
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.
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"}]
I have a program like this.
Module Module1
Public Class Mstr
Public Property Prop1 As String
Public Property Prop2 As String[code]....
But it is not working as I expect it to. You can see it from.The DtlsB properties of all three DtlsA objects are having values from last iteration.
I have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.
vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)
[code].....
how to take a query that returns a single row of data and load that data into textbox controls.I know about ExecuteScalar but it is only good for a single column of data from the query.
View 2 RepliesI am trying to use a Web Service to return Json for a Collection of Users from a Database Table. I'm only new to .NET (< 1 week experience), and I don't want to use the UpdatePanel for AJAX. I have tried using the JavaScriptSerializer as well as Json.NET to serialize. Both cases seem to spawn an Infinite Loop.[code]
View 1 RepliesI 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].....
I have created a COM Object via VB .NET and exposed some functions that I wish to call in Excel using VBA. I am currently trying to pass an array of objects as a result to VBA but Excel is complaining the following:
'Function or interface marked as restricted, or the function uses an automation type not supported in Visual Basic.'
I have looked around on the internet and have seen similar issues but not to one I am trying to do.My VB .NET function, which I wish to call in Excel is declared as follows:
Public Function CallArray(ByVal serviceName As String, _
ByVal effectiveDate As String,
ByVal serviceParams() As System.Object,
ByRef ArrayRes() As System.Object) As System.Boolean
VBA is complaining about the System.Objects my question is how the heck are you supposed to pass and return arrays from .NET to VBA. Also the data that will be in the ArrayRes() is mixed type, its not just strings etc, its an array of arrays that can contain strings, integers doubles etc.I chose VB .NET because I assumed it would be possible to map to VBA easier.if System. Object and Arrays in VB .NET is not the way, ie maybe theres another way via collections or lists, then Im open to that. I just need to get this data into VBA.Also I could move over to C# if needs be.
using a for loop i want to be able to pause it, display string in text box for 60 secondsthen move to the next loop,change content of the string and display it again for 60 econds.this should go on till end of count.i am currently using a timer in do while loop to pause, but instead of displaying the string contents in each loop,it adds up all contents in all the loops and displays them at the end of count,not what i want. i tried using 'sleep'funtion but its behaving the same.below is the code:
For i = 1 To count Step 3
'empty string
disall = ""
[code]......
I have the following code in my project:
rivate Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String
[code].....
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 want to ask about looping
if i have big looping, and i want to print it result real time, how can i do it?(it look like when we scanning with antivirus, then the label that contain location that scanning change real time)[code]...
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]....
I want to bind the following query result to datatable:
Dim query = From c in db.Customers _
Where c.Status = "Active" _
Select c.CId, c.FirstName, c.LastName, c.Email
First time poster and new to ASP programming.I have a functional database to where i am trying to add new functionality.I'm trying to add the idea to check if a returned string is empty, if so get value from a backup table which holds historical information. Here is what i have got for the specific part:
[Code]...
I'm trying to run a query and display the result in a listbox. I can do it for a datagridview but not for a listbox .
Code:
Private Sub frmNieuweActie_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
strSql = "SELECT Acties.Actieid, Acties.Actie " & _
"FROM(Acties) " & _
[code]....
I get the correct amount of items in my listbox but it displays "System.Data.DataRowView" as item .
I am facing a problem displaying the result of my "select *" query on the form . Here is my code:
[code]...
But when I write this code and run my form I am not able to see any records present in my database tables being displayed on my form. I have inserted a DataGridView on my form . What changes should I do to my code ?
I'm trying to fill combobox with my SQL query result.[code]...
View 2 RepliesI am trying to fill a combobox using the results form a query to combine two fields (first and Last name). I cannot seam to get to the query through the table adapter. I can set the binding source and select one of the fields to fill the control but I cannot get to the query's.
View 2 RepliesI have a sql query which is returning null value below is the section the iID is null.Once debugger reaches this it goes to exception as its result is NULL. How to control debugger from going to the exception.
[Code]...
How do I assign the query result to a variable.I am using SQLlite. Below is the code for retrieving password from the User Table. I need to compare the given password and the given password.
Dim i As String
Dim p As String
i = txtUserID.Text
[code].....
I would like to parse the result of entering a query at [URL] the problem is that I cant seem to the post data just right and cant properly open a webrequest to the site.
View 3 RepliesI have added a query to my form using the sqlDataAdapter object and the wizard.Now I want to show the result of the query in a combox on my form.The combobox is not binded to a data source, but is going to be used for searching a record (but this is for later)
View 10 RepliesI am new in vb.net 2008.I want to populate items of a combobox with a result of a query that may include join or not.
View 3 Replies
