Create A List(of Bytes) Within A Class Structure?
Sep 2, 2011I have the following Structure within a class[code]...
How do I efficiently use this list?[code]...
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Getting Field Values From A List Into Fields In A Structure Or Class?
Mar 21, 2012I have a class (using a class rather than a structure only because I can set a default field value for the fields I declare in the class) and I'm using a web service that returns information (demographic information) in JSON. I am using LINQ to get the values of each "entry" from the returned list and in that, I have to parse through and pull out the actual data that I want.Here's how I have it doing right now (just a start, there are 44 of them total, thus my question which will follow the code):
Dim returnedStats = From ljo As Linq.JObject In returnedObject.SelectToken("results")
'
'
For Each stat As Linq.JObject In returnedStats
[code]....
Create A List (of My Custom Structure) To Hold Only Unique Items?
Mar 8, 2012How can I create a list (of my custom structure) to hold only unique items? This list should be created from another list.[code]...
View 5 RepliesVS 2010 : Create A New Class And Have Each List Item Of That Class Such As 'btnID', 'btnText'?
Apr 27, 2011I want to read a number of items from a file and then associate each of those items with a new button at run-time, so that when the user clicks one of the buttons I can display some information about that item.Can I use a LIST to manage these buttons and items? Can I create a new class and have each list item of that class, such as 'btnID', 'btnText', etc... ?
View 2 Replies[2005] Structure To Array Of Bytes?
Mar 11, 2009I need to send a structure which contains structure to a socket server but i am abit lost here.Structure example
'example of first structure
structure firstStruct
Dim headerName as u
[code].....
Class Structure - Large Structure That Has Lots Of Properties ?
Jan 5, 2010I'm new to VB 2008 after having spent a long time with VB6, so I apologize if this is a stupid question. But I'd really like to have this straightened out.
Let's say I have a pretty large structure that has lots of properties.
Code:
Now say that I want an internal database with about 10 instances of this structure total, describing, say, 10 different products that a store sells. When these values are loaded from a database, they remain totally static. (However, they can be different each time a program loads)
Now say that I have a class. Each instance of this class is a type of that BaseProduct structure. Meaning, each instance of the class pertains to one of the 10 types of products that the store sells. However, this class has additional properties that pertain specifically to each instance, which are not static.
Code:
Now, the problem here is... If I have 200 different transactions, each one contains an instance of BaseProduct. BaseProduct is HUGE, and is largely redundant (only 10 types possible), so I think it's a little silly to include a whole copy of it with EVERY transaction. However, the Transaction class really needs information regarding the base product it pertains to. Is there a way to, instead of declaring a New BaseProduct in the Transaction class, to simply make one of the properties of the Transaction class a pointer to a BaseProduct variable?
In VB6, I would accomplish this by making a BaseProduct(10) array, and then giving each Transaction an ID number referring to an entry in that array. But in VB 2008, using class structure, this is impossible. I can't define the BaseProduct(10) array outside of a class in a namespace, and if I define it in the actual application's form, then the class loses modularity since it relies on the application that's using it.
VS 2008 Convert The XML Structure Into A Class Structure?
Apr 25, 2010I'm having a problem that's driving me crazy; I can't understand how to convert the XML structure into a class structure (that I want to use to hydrate a XML document).
The XML document looks like this:
xml
<?xml version="1.0" encoding="utf-8"?>
<artists xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://www.spotify.com/ns/music/1">
[code]....
Create A Class That Has A List Of Possible Values That Can Be Used?
Oct 9, 2009I want to create a class that has a list of possible values that can be used.Example: when you create one like this: Dim a As ClassName = , a list will pop up in intellisense.or when the class is used as a property on a usercontrol, you can click the combobox and pick from the values.Here is what the value list looks like for the Color class: vs value selection.PNG
View 4 RepliesHow To Create Collection Class And Add List Of Items
Oct 13, 2009How to create collection class and add list of items to collection class that stores list of items?
View 3 RepliesPassing A Structure From One Class To Another Class In A Applications (VS2008)
Apr 7, 2010I'm sure there are several ways of achieving my goal but I am after opinions on what you think is the best option. I'm writing a vb.net application which (amongst other thinks) interfaces with media players in the home. Because there are different types of media playersI'm trying to structure it so each type of media player has it's own class which interfaces to a management class which sits on top of all the different devices types.
The device classes are responsible for discovering the phsyical devices and returning that information up to the management class. A device class may be responsible for monitoring 1 or more physical devices so..
[Code]...
Create A User Control With A List Of Custom Class Type Property
Nov 29, 2011Is it possible to create a user control with a list of custom class type property? If it is, how can I? The issue is that, in designer mode the property is not displayed in property window. I can add the list on markup but when i switch to the designer mode it gives an error which is 'The user control does not have a public property named BookList'.
View 1 RepliesCount Up Bytes In List Box 5?
Jan 9, 2010I'm using this code to count up bytes in list box 5. It works but when the value of bytes is 0 i get this {Width 100, height = 200,) I think the problem is the ToString So does anyone know how to count numbers in the list box?
vb
Dim total As Integer
Dim i As Integer
For i = 0 To ListBox5.Items.Count - 1
[Code].....
Indexing A List Of List Sub Structure Directly?
Mar 18, 2009If I have a list of list of myparams, can I access the sub structure of my params directly by indexing the list emelments?, eg..structure myparamsdim p1dim p2end structurepublic my_list as new list(of list(of myparams)))' now try to access list data directly by indexing..my_list(2)(3).param2 = 3but line above cuses error msg= Error 1 Expression is a value and therefore cannot be the target of an assignment!VB2005 starter
View 4 RepliesConverting String To List Of Bytes?
Jun 2, 2011This has to be incredibly simple, but I must not be looking in the right place.
I'm receiving this string via a FTDI usb connection:
'UUU'
I would like to receive this as a byte array of
[85,85,85]
In Python, this I would convert a string to a byte array like this: [ord(c) for c in 'UUU']
I've looked around, but haven't figured this out. How do I do this in Visual Basic?
Asp.net - Structure A Class Inside A Class?
Jun 3, 2011Currently, if I have different classes containing functions etc, I would structure them all in the 1 VB file titled whatever the main Class is. For example:
[Code]...
However, the problem with this is the file can become 1000s of lines long making hard to find portions of code. Is there a way I can store SubClass in a file such as MainClass.SubClass.vb so that its easier to locate classes? Or is there a better, more standard, way of doing this?
How To Create An Array Of Bytes
May 30, 2012I have a bluetooth pen that I need to send an array of bytes too, can somebody offer advice on how i create an array of bytes for the following:0x68 0x00 0x02 0xFF 0x0A (in the guide this is the array of bytes I need to send)
View 1 RepliesCreate A List Class Variable With Default Size Of "1"?
Apr 8, 2010I am not too sure about the syntax , since I am still very new to VB..
So this is what I have in a class
Code:Public Class DocumentDelivery Implements IDisposable Public Shared RenderList As New List(Of Byte()())
Public Function Initialize(ByRef env As et.User.SystemCommon.Environment, ByRef errs As et.Exec.Utilities.ErrorCollection) As Boolean
[Code]...
I didn't write the existing class, I am just making changes to it. I am not sure why there is no constructor. However, Intialize() is called every time a the class is created.Right now, I set the default capacity of the RenderList, (the class variable) to 1 in Initialize method.
Is there a way to set the capacity outside of the initialize method? what is the syntax?
C# - Use A Structure Rather Than A Class?
Apr 10, 2009In a recent project I was working I created a structure in my class to solve a problem I was having, as a colleague was looking over my shoulder he looked derisively at the structure and said "move it into a class". I didn't have any argument for not moving it into a class other than I only need it in this class but this kind of falls down because couldn't I make it a nested class?
View 5 Replies.net - Where To Keep A Structure: Class, Module Or None
Apr 18, 2011This is purely a coding practice question concerning VB.NET structures. Where do you keep one?As an example, I've created a structure for the simple purpose of keeping information organized, I'd like this structure to be stand-alone, not belonging to any class so I wouldn't have to access it through SomeClass.MyStructure but rather simply MyStructure. So, do I keep it in a separate class and import it into my namespace? Do I keep it in a module (Static class, essentially)? Do I just make a separate VB.NET code file and place is there (I would like it to live in a separate file). Just to clarify, I need this structure to be accesses by the whole application, not just a single class.
View 1 RepliesClass Structure For Three Outputs?
Feb 20, 2012Could someone write me a Class structure for passing the data array below.
Function function1(Byval input1 as Double, Byval input2 as Double, Byval input3 as Double)
'code'
data.data1=value1
[code].....
Add A Structure To A List
Sep 27, 2011add a structure to a list
View 2 RepliesCannot Get Values From A Serializable Class And Structure
Feb 17, 2010I have a serializable class and structure I created for an ArrayList to be access within a Web Application. The problem I am having is the count comes back as zero after calling New. I debugged the code and the Arrylist is being populated
View 3 RepliesClass/structure To Serialize JSON?
Mar 9, 2011I am trying to figure out a class/struture to handle the following JSON format:
{
"ReturnData": [
{
"id": "msg2DoesNotExistName",
[Code]......
I may or may not have Data for ReturnData and SetValue (one or both at a minimum). I am trying to let the serializer handle most of the formatting without having to check for empty sections and single-item arrays.
Possible To Show Structure Of A Class In A Treeview?
May 31, 2009is it possible to show the structure of a class in a treeview? if yes how
View 3 RepliesReflection On Structure Differs From Class?
Jan 15, 2009Code snippet:
Dim target As Object
' target gets properly set to something of the desired type
Dim field As FieldInfo = target.GetType.GetField("fieldName", _
BindingFlags.Instance Or BindingFlags.Public Or BindingFlags.NonPublic)
field.SetValue(target,newValue)
This snippet works perfectly IF target is set to an instance of a CLASS.However, if target is set to an instance of a STRUCTURE, the code does not actually change the value of the field. No error, but the value remains unchanged.And, oddly, if I'm stepping through code, watch the SetValue fail to do anything, and immediately go to the Immediate window and type exactly the same SetValue operation, that works.
Edit:
Per request from Jon Skeet, actual code:
Private Shared Function XmlDeserializeObject(ByVal objectType As Type, _
ByVal deserializedID As String) As Object[code].....
[2008] Size Structure In A Class?
Mar 6, 2009I am making a class that has a property that I want to be of type System.Drawing.Size. I don't seem to be able to reference system.drawing from within my class, and therefor can't set my property's data type to Size. Anyone know how I might do this?
View 2 RepliesRijnDael Encryption/decryption - Select The Key Bytes And The Block Bytes From The Numeric Up/down?
Nov 13, 2010I want it to do is that you input a string, then you select an algorithm (Theres only going to be one RijnDael) then you input a key, then the Initialization Vector comes from "txtIV.text" then you select the key bytes and the block bytes from the numeric up/down, then you either encrypt or decrypt.
View 1 RepliesGeneric Restriction - Dont Select The Key Bytes And The Block Bytes From The Numeric Up/down?
Sep 16, 2011Ok i am having some issues designing a base-class to handle generics.Caveat is i need to restrict the type put in as a Numeric type, specifically Int16, Int32, or Int64 (Short or Long).I know you can do Of T as {Structure} but i dont want to select the key bytes and the block bytes from the numeric up/down.
View 2 RepliesBytes Written Exceed The Content-Length Bytes In XML Post?
Feb 19, 2011I keep getting a ProtocolViolationException "Bytes to be written to the stream exceed the Content-Length bytes size specified." on the following code.I've tried setting Content-Length numerous ways with no success.
Dim url = "https://domain.com"
Dim req As WebRequest = WebRequest.Create(url)
req.Method = "POST"
req.ContentType = "application/xml"
[Code]...
VS 2008 What Does This Line Exactly Do - I = Stream.Read(bytes, 0, Bytes.Length)
Dec 28, 2010What exactly does this line do?
i = stream.Read(bytes, 0, bytes.Length)
Does it read the entire message string sent by the client? I have a line to write to the stream later in the code and that does not seem to be sending anything back to the client, although the code around is excuting.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
Try
' Translate data bytes to a ASCII string.
[code].....