Declare Defaults Values For Arrays?
Feb 18, 2010Why can't I declare values for an array inside a module?
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Declare Arrays In Runtime?
Sep 16, 2011How can I re-declare arrays in VB.NET at runtime?Example:When I run my program, I will have 100 arrays then I have my button that says "add", if I click it, a text box will appear and I can type there what ever I want to add in my arrays, also I can delete an existing array, but the problem is for example I want to delete an item, and that item is in array number 6, if I delete it, a new item will replace the array, how will I do it?
View 1 RepliesDeclare And Access Arrays In Visual Basic?
Oct 5, 2011I declared an array of strings and initialized every element to "5". But when I debug with a breakpoint after the For-Each, all my array members have Nothing in them. I'm on Visual Studio 2010.
Dim words(999) As String
For Each word As String In words
word = "5"
Next
Declare Fixed Length Variable Arrays In Structure?
May 25, 2012How do I declare a fixed length variable array?[code]...
View 1 RepliesDeclare Two Constant Arrays One Bidemensional Of Strings The Other Bidimensional Of Doubles?
Jan 8, 2009i've to declare two constant arrays one bidemensional of strings the other bidimensional of Doubles?
View 10 RepliesDeclare A 2D Array And Assign It Values Separately?
May 18, 2009I wanted to know how I could declare a 2D array and assign it values separately?
View 37 RepliesHow To Declare A Simple Array And Intialises Its Values
Dec 30, 2009i 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?
View 5 RepliesAdding Values Of Two Arrays?
Apr 26, 2012I'm making an application in school where I have to display the values of domestic, international, and total sales of company "Conway Enterprises." Everything seems to be working except it is not displaying the totalCompany sales as a currency. I'm sure it's probably an easy fix but I've been searching the internet and re-reading my book for awhile with no results. Below is the code, as I said everything seems to be working fine aside from adding the two array values and then displaying them as currency.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
[code]....
Do Arrays Take Up Space Even Without Values In Them In .net
Sep 28, 2011I have a program in VB.net that uses a 3D array:
Private gridList(10, 900, 900) As GridElement
Now, I just used a Memory Profiler on it (because my application is having some major leak issues or something) and apparently, this array (containing at the moment of testing 0-30 elements at one time) is using 94% of the memory currently in use by my application. Even when it is empty it takes up huge amounts of memory.
My only assumption is that even empty arrays take up space! This puts a major blow into my plans!
My Question:
Is there any alternative to this that allows me to still have the same abilities to map i.g. I've been using it like this:
Dim cGE as GridElement = gridList(3, 5, 7)
but doesn't hog up so much memory for things that aren't using memory?
Initializing The Arrays With Values?
Sep 27, 2011I'm using a structure to hold three arrays:
structure myStruct
dim arrayOne() as char
dim arrayTwo() as char
dim arrayThree() as char
end structure
But how do I go about setting them a value, I've got my instance of myStruct
dim aStruct as new myStruct()
If I try redim, it just tells me it can't change the dimensions of an array, so how do I got about initializing the arrays with values?
Mapping Values Of Two Arrays?
Oct 22, 2009I have two arrays with equals number of values, is there a way to match the values exactly in same order, as such:
FirstArray("1,"2","3","4")
SecondArray("John","Samantha","Tony","Joe")
1---John
[Code].....
Mulitply Values In Two Arrays?
Sep 25, 2010I am working on a program where I need to multiply the value (int) times the value (dec) of another array to calculate the total cost of books in inventory. [code]....
View 2 RepliesSearching Arrays For Values?
Mar 4, 2010i am working on a VB project for Chem and im making it for converting grams to moles, moles to molecules or any thing like that. and i have about 110 elements set up and working fine the way that im doing it but i have a feeling this is a horrible way and to abundant.
i have a textbox set up to if i type in the element He and hit enter it will find ChemElement(1)="He" and it calls "Sub DisplayElement(ByVal number As Decimal, ByRef label2 As Label)"
Which then displays the Chemical mass into a Label.
[Code]...
Assigning Arrays Values From File
Jun 3, 2011im a newbie here, im taking intro to programming wth VB in college and im having problem with the homework here's what im supposed to do
[Code]...
Changing Arrays Location Values?
Apr 23, 2009All variables and Arrays have been declared properly the problem Is when the user enters a new number using a scroll bar
LottoNumber = HScrollBar1.Value
Label2.Text = "Number Selected: " & LottoNumber
The out put of the variable count stays at 1 so the output stays at (Pick # 1 of 6) and doesnt increment at all and does not build the OutPut string
'IF The LottoNumber Location Value is 0 in the Array selectedLotto THEN mark it by making the Loacation Value to 1
If selectedLotto(LottoNumber) = 0 Then
[Code]....
Storing Values In Arrays Fom Inputbox?
Feb 5, 2009i have declared an array which i want to populate with names, as they are entered into an input box.It does not seem to work i have tried many other methods with the array but to no success.
Dim namearray() As String
Dim i As Integer
name = InputBox("Enter the candidates name:", "candidatename", "", 500, 500)
name = namearray(i)
i = i + 1
User Added Values To Arrays?
Jun 19, 2012I've searched until my eyes and fingers feel as if they are going to bleed. I cannot come up with the answers I'm looking for. I want to essentially create an inventory system without using a database (part of why the eyes are bleeding, keep getting directed on side tangents), that is fed by the user. IE, User enters a name of a product, it is added in to an array. As a designer I will not know the exact number of elements to be held within the array. The user will enter their chosen item in to a text box. So I'm looking for a way to take the value in the text box and add it to the array. I believe I would use the reDIM function to do this, but beyond that I've got nothing. I'm unsure of how to reference the value stored in a text box.
View 7 RepliesVS 2008 Byte Arrays - Getting More Values
Jun 11, 2010I am having some major problems with byte arrays. First off the bigger array I have the more values go missing, I originally wanted to make a huge array and just dump like a 100mb chunk of memory in it but when I did that every byte in the array returned 0. So I experimented a bit and found 4kb to be the biggest chunk size to reliably not return 0.. ok I figured I'll just loop the 4kb and glue them back together later but no such luck, after being combined into the main array the bigger the number gets the more values that should be there just aren't.
Here's a code sample:
Dim retval(4095) As Byte
Dim combval(RLen) As Byte
For i = 0 To RLen - 4095 Step 4096
ReadProcessMemory(ProcAccess, i, retval, 4096, 0)
retval.CopyTo(combval, i)
Next i
WriteLine(combval(321603964))
WriteLine(ReadMemory(321603964, 1)(0))
So with the last 2 lines if I pull up some smaller number like 8 digits or so it reports back no problem but anything slightly bigger like the number i have written in there right now is just 0. After some additional research I discovered that the reason why 4kb is the max size I can reliably get is coz that's the size memory chunks are made of, "page" as they call it. Why the memory reading drops off at higher addresses alltho I suspect it has something to do with the way memory is structured and I am just not hitting the startpoint of a page anymore due to an offset or something somewhere.
.net - Find Common Values In Several Arrays Or Lists
Dec 23, 2011Find common values in multiple arrays with PHP Pretty much does what I need, but in PHP, I need VB. My situation is I am trying to create an intelligent stock pick system based on multiple stock locations. At the point of invoicing, we loop through the items invoiced and check the stock database for available stock.
If all items on the invoice are available to pick from stock location 1, then all should be picked from stock location 1... etc. If all most items are available from stock location 1 except one or two, then pick all stock from stock location 1 except for the exceptions which should be picked from the location with the highest available stock. Finding highest available stock is simple, but I can't work out how to analyse the stock availability from multiple locations and finding the common stock locations.
[Code]...
Compare Arrays And Listboxes Values In VB 2010
Jul 22, 2011I have a program that has to store a pre-made array that contains strings (moviename, moviegenre).
I setup all the items in the array already, example:
moviearray(0,0) = "Green Lantern"
moviearray(0,1) = "Action"
For this example, if the user selected "Green Lantern" from my listbox, then the label needs to display "Action". So yeah, it's a 2-column array: first column = movie name, 2nd column = movie genre. Now, I have a listbox containing all of the movie names (not entered by the array, but entered through the Item property of the listbox). When a selection is made in the listbox and a button is clicked, I need to have the genre of the movie output to a label. That is where I am stuck, I just can't figure out to compare what's in the list box with the first column of the array to output the 2nd column to the label.
Find A Matching Pair Of Values In Two Different Arrays?
Apr 11, 2010How to find a matching pair of values in two different arrays? Here's the scenario:
Index Array1 Array2
0 1 3
1 2 5
[code].....
Initialize Arrays - Get Values For Array Elements
Nov 5, 2009How to get values for array elements in VB.nET from the user.also i wanted to display these values in the combo box.[this is easy i could manage this].
View 2 RepliesPass Optional Values For Chars Arrays?
May 4, 2009How can I pass optional values to chars arrays in a function?[code]...
View 1 RepliesSet X,y,z Values From Text File Into Separate Arrays
Nov 7, 2011I have been trying to find out how to do this for days now, so I am finally asking how. I am newish to programming. Here is my problem.
I am trying to extract x,y,z coordinates from a text file arranged as such:
x,y,z
x,y,z
x,y,z
etc.
I need to be able to extract the x column into an array, the y into an array, and the z into an array. I learned how to pull it into a string, and how to split for every line, but i don't know how to split after each comma and separate them.
Class Property Arrays Not Holding/ Updating Values
Oct 1, 2011I am trying to use several Class arrays to hold values that I will cycle through at a later point to perform some calculations. I need to change the array sizes to fit the data as it is entered. I am using one procedure to set the first element of each array and then a separate procedure to pass the additional values as they are entered.
Until my last attempt at changing my code, my StartBalance sub seemed to work, I could step through and see the values assigned to the class arrays in the code block. However, when it moved on to the Transaction sub, it did not recognize that the first set of values were set, the array shows zero values for index 1.
I have gone through several changes trying different ideas from reading blogs and articles, but I guess I am not understanding how these work. I even used the class arrays directly instead of the Property procedures to see if I would get a different result, but I do not.
I believe I must be approaching this incorrectly and though I can find dozens of examples of setting class variables and even a couple on using arrays as class variable, I can not find any that show how to then pass values to those arrays.
Public Class Statement
Private _tranDate(1) As Date
Private _amount(1) As Double
[Code]....
Make A Bunch Of 2d Arrays To Access The Independant Values Easily?
Jun 18, 2009I need to make basically a bunch of 2d arrays, that I can access the independant values easily. Like multiple properties As an example:
[code]...
Because later I have to access Value1 in a manner that spells out each independantly. I have used some basic Structures to define 1 property and does something with it. But not 2 properties, and I am out of my norm on creating a Class to do something like this.
[VS2005] SafeArrayTypeMismatchException - Passing Two Structures Arrays And Other Single Values
Sep 29, 2008I have written a ActiveX DLL in VB 6 which is like -
[Code]...
When I do this everything works fine and I am able to pass value to dll. I am passing two structures arrays and other single values like int and double etc. So far so good. But when I insert this code in another application (created in same vb.net 2005) where I actually intent it to use then i get the following error -
System.Runtime.InteropServices.SafeArrayTypeMismatchException
Specified array was not of the expected type.
I am puzzled as to why is this happening. I checked basic settings and they are same. In short the code works if i create a new project and go on but does not work and gives error if I insert in an existing application's code where i wanna use. To test I created a dll without passing structure arrays and then it worked in that application.
[Code]...
Multi-Dimensional Arrays - Code To Set Array Values And Store Them In A Variable
Aug 7, 2010I have this code to set array values and store them in a variable,
Dim productName As String()
Dim productPrice As String()
Dim productCategory As String()
[CODE]...
How do you get the variable values to output like this?
<input type="text" value="Chang Beverages $19.00" id="Chang" /><br />
<input type="text" value="Ipoh Coffee Beverages $46.00" id="Ipoh Coffee" /><br />
<input type="text" value="Gula Malacca Condiments $19.45" id="Gula Malacca" /><br />
C# :: Where To Store Defaults
Aug 24, 2011I have bunch of default strings and ints throughout the app. like default names, etc,etcThose are all constants. I just want to access them in different pages in my app. What is the best place to place them? I was thinking about Enum or something similar. What is the best approach?
View 6 RepliesCheckbox Defaults To Intermediate
Sep 11, 2009I have a few SQL connected check boxes in my form.The problem is that on the 'Add New' event the check boxes go into a "intermediate" status (filled in).What I would like is for all the check boxes to be unchecked.I have so far tried the following and none of it worked.[code]Nothing seems to help, in fact there seems to be no effect at all on the check box properties no matter what I do (wether I change the property in VB, in the table definition, or programicaly).
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