Declare Array That Initially Is Empty?
Jan 27, 2010
How do you declare an array when the array is initially empty?? I am taking multiple measurements from a meter that I want to put into an array. How would I declare that?? Here is my code to accept the last measured value.
HTML
Dim measResult as string
For I as Integer = 1 to 4
measResult = objDevice.gpibRead(i, 30) ''30 is the buffer size
Next
How can I set up measResult so it is an array that will hold all of the measurements from the meter?? I have tried Dim measResult() as string, Dim measResult() as String = objDevice.gpibRead(1, 30) but no luck.
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Oct 19, 2009
The code below is used to check if the application setting, an arraylist is populated or not via the count method.
When running the program fails with error "NullReferenceException was unhandled" as initially the setting (arraylist) will contain no values.In similar circumstances I would declare a new instance of the object or set value to string.empty or check if DBNull.
I know application settings have a save method but to reference/load them one is not needed.I also left the value field in the projects -> settings to be empty.[code]...
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Jun 13, 2011
What is the right way to declare an array
Dim lblname As Label() = New Label(get_num_of_children()) {}
Dim mealcheck As Integer() = New Integer(get_num_of_children()) {}
[code].....
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Jun 7, 2012
I have a little syntax declare problem in VB.Net.
Dim proxy As USImportoerServiceTypeClient = DMRUtils.CreateAndConfigureClient()
Dim request As New USDeclare_I()
request.DeclareCollection = New US_ITypeDeclare() {}
[code]....
This above code do not work, becase the "US_ITypeDeclare() {}" is empty an only contains a new DeclareCollectionStructure
declare a KoeretoejErklaeringStructure to this an set this date value til "DeclareCollectionStructure.DeclareCollectionValidDate" ?
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Apr 30, 2012
I Declare a 2D Unlimited array.My code:
Dim array As String(,) = New String(,) {}
array(0, 0) = "top left"
MsgBox(array(0, 0))
The problem is the msgbox shows nothing.
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Sep 1, 2009
Is there a better (more compact or elegant) way of declaring a large array such as this?[code]...
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Jun 21, 2010
I could have an array of players but I cant dim and array as new and my players are all a class I made called gameobject
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Jan 14, 2008
Dim AttributeValuePairs() As Dictionary(Of String, String) = New Dictionary(Of String, String)
byt this i mean AttributeValuePairs is a Array of dictionaries
[code]......
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Jun 4, 2011
following code in C#.net...
{
long filesize=Mystream.Length;
byte [] buffer=new byte[(int)filesize];
Mystream.Read(buffer,0,(int)Mystream.Length);
}
How To convert this code in vb.net......or same code in vb.net.
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May 3, 2011
I'm trying to declare a array that I want to use in the module and in the forms. I like it to be usable all over but I cant get it to work.
I tried this code but when I want to use it in the module it says that it isn't declared.
Public Class Form1
Public ShuffleArray() As String
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Nov 26, 2010
Assuming the array has 216 elements:
Dim Data As Integer() = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
[code].....
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Nov 15, 2011
I am trying to declare a array within a structure, and it is not working. [code] So I want each league to have a single name and id and 20 players.Is there a way other than writing out dim player1, player2 etc.
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Feb 2, 2011
"declare a two dimensional array of integers named intgrades.it should have 30 rows and 10 columns
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Jan 11, 2012
Can anyone tell me how I would declare an array for data that will come from textboxes? Every example I find seems to be data that comes from an input box, and the array name would just be strInputbox, for example. However, in my case the user will input data into several textboxes (each named txtBox1, txtBox2, txtBox3, etc.) and I'm not sure how to write this.
Thank you.
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May 3, 2009
I have built a new class lets say it is called class1
Public
Class Class1
Public s As String ' strings
End
now in my program I want to create an array of them in on the windows form, how do I do this?Class
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Mar 26, 2011
I need to declare dozens of objects (Textboxes and Checkboxes mostly) into differents arrays but when i try to do this, they are added as strings and not as objects. I'd like to add them as objects to run through them recursively.
[code]...
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May 3, 2011
I'm trying to declare a array that I want to use in the module and in the forms. I like it to be usable all over but I cant get it to work.[code]...
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May 18, 2009
I wanted to know how I could declare a 2D array and assign it values separately?
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Jan 29, 2009
I am looking to declare an array of 20 integers to store the answers to the questions, and then for the next button i am looking to get the answer and write it to the array. If one radio button is checked then i want it to write 1 to the array. Then finally i want to write the username, the array of answers and score to the txt file. How can I do that?
below is my code i have so far:
Imports System
Imports System.IO
Public Class Question
[Code].....
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Apr 21, 2009
How would i declare an array which would eventually hold data as follows:
Arr = [ _
[ 0, 0, 0, 0, 0, 0, 0, 0], _
[ 0,101,101,101,101,101,101, 0], _
[Code].....
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Dec 10, 2009
Public Function manyarrays(ByVal ParamArray ints() As Integer,ByVal strs() As String) End Function But it is error . How can i fix it ?
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Dec 30, 2009
i know how to declare a simple array and intialises its values, but i dont know how to get its results out of it. let me explain what i want.i've basically made like a Quiz, so the array(s) needs to hold 20 questions and 20 anwers. and i ve put these separately in each array, i.e. i have 2 arrays one with questions and the other with answers.when the user of my program presses ' get a Quiz Question', they retrive a question. Then the user types in an answer and using the submit button sends the answer for it to be verifed. how do u make sure that the question has a coressponding answer to it. as ive sed i have 2 separate arrays, i dont know how tell vb that when a particular question appears that it has a corresponding answer. If it matches a positive message appears, i.e.good otherwise wrong will appear.Also i need to randomize the way the questions appear in the quiz so they dont follow the same order when they are seen for the second time?
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Dec 11, 2009
I am upgrading a project from VB6 to VB.NET. Unfortunately, I cannot include the DLL or even the name of the DLL that I am using here, I am under a confidentiality agreement. However, I hope I can post enough info here to get this frustrating problem solved.
In VB.net: Code:
So, if I run it as such, it errors out while calling SetParameters saying
The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG))
If I comment out the line m_Parameters.SProperties = New S_Properties(9) {...}, then it does not error out, however the function returns 0, which means it did not actually set the parameters to the device. Trying to ReDim SParameters(9) will also give the hresult error. Doing it with my example above, I put a watch on m_Parameters in both VB6 and VB.net and they look IDENTICAL. All data is the same. Why would I get this ArgumentException in VB.NET and not in VB6 when I am passing in the exact same arguments as in VB6?
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Feb 26, 2011
So I have an assignment dealing with arrays for school but first I will start it off with the simple question as to where I am stuck now. I was wondering what the simplest way is to declare all the numbers in an array without going down the list one by one ( ArrayA(1) = 1, ArrayA(2) = 3 and so on.) I was wondering if the simplest way to do this is just by putting: ArrayA = ArrayA += 1 or what the simplest way to do this is.
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Nov 23, 2009
give me example of how I would declare a base case for a 2d array in visual basic. I am using 2008 edition
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Nov 2, 2010
I've been taking a class on it this semester and am starting to get very confused and behind. I've been pretty stuck on my hwk assignment for this week and was wondering if anyone could possibly hint at what I'm doing wrong or if I'm just completely way off. The whole rows and columns in arrays seems to be throwing me off now. Also, sorry if this is not the right place to post something like this I was not sure which section this fit under.
[Code]...
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Jun 6, 2012
Im trying to query a game server, and have been looking up what to send and so on...This is what they say:Quote:Request formatServer info can be requested by sending the following byte values in a UDP packet to the server.
FF FF FF FF 54 53 6F 75 72 63 65 20 45 6E 67 69 TSource Engi
6E 65 20 51 75 65 72 79 00 ne Query
[code].....
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May 30, 2012
I'm working on a program to delete files from a certain folder after they have aged a certain amount of time and either match via regex or extension. I'm running into an issue where files() could be:
files(0) = Nothing
files(1) = Nothing
files(2) = Nothing
etc....
Right now the way it is written, I could place
Else
log(1) = data(1)
log(3) = "Array field empty"
InsertLog(log)
And the program would log as many files as file(i) = Nothing holds. This would create redundant database records and is not wanted. Is there a way to figure out if ALL files(i) = Nothing and then place code in there to insert into the database?
'If log(3) is successful that means no files were old enough or deleted successfully
If log(3) = "Success" And IsArray(files) Then
For Each file In files
If Not file.IsNullOrEmpty(file) Then
'If files is actually something insert into the log
log(1) = file
[Code] .....
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Apr 12, 2009
On a button click I need to test whether or not an array has been filled, if it has the user gets linked to a new form otherwise they receive a message box telling them to first assign values to the array.
I've tried 'If MyArray Is Nothing Then....' and 'If MyArray.Length < 1 Then...' but neither seemed to have worked.
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Aug 21, 2011
find the first empty value on an array?Say I have a directory and will occasionally be adding and removing items from an array to represent this. How would I go about making a loop until the entry is empty. I've tried various things like if null and that sort of thing but none of them seem to work- the problem is I guess that this array value is empty and the system can't deal with it without throwing an error message.Creating an array of a set size from the start isn't an option as I've no idea how big the directory will ultimately be.
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