Is it possible to have a UD Class that can limit how big it can grow as an array?
for example:dim var(10) as class this would throw an exception cause the class will only grow up to 5 elements.dim var(4) as class valid cause it is under the 5 element rule dim var(4, 10) as class invalid cause the 2nd dimension is above the 5 element rule. (would throw exception)
My application allows the user to enter text into a RTB including all the various text font, size, etc changes. The user then prints that data onto a label. I got from my previous posts, I can print that on my label Each sheet has four labels, 3x5 inches. I print landscape and adjust margins to select the right label.But I want to limit the amount of text the usr can enter to the amount that will fit on the label. In essence, what I would like the user to see is a virtual label on the screen that they can type data into and get exactly the same formatting on the label when they print it.
I found several (mostly old) articles about linking the RTB to the printer, but nothing on how to set and limit the size of the RTB to the exact size of the label.
I am trying to create an list or an array of a class.Here is my "Ingredient" class that I am trying to create a list of:[code]In my "recipe" class, I am want to create a list (or array) and I am drawing a big blank on how to do it. Can anyone point me in the right direction?
View 2 RepliesI'm designing a small GUI Windows program that allow staff at a cinema to reserve seats for customers. There will be a total of 60 seats in the cinema. I have two classes in my program:-
1.) MainForm.vb - used for I/O actions and user interaction
2.) SeatManager.vb - used to hold and handle the background methods and functions that make the program work
Here is the code for my MainForm.vb class thusfar:-
Public Class MainForm
Private Const m_totalNumberOfSeats As Integer = 60
Private m_seatManager As SeatManager
[Code]....
Basically, when the program opens, the lstReservations list in the MainForm class will be populated with a total of 60 (m_totalNumberOfSeats) entries to represent 60 seats. Each of these seats will contain the index number from the array m_nameList; this index number (+1) will represent the seat number and then in the lstReservations list, after the seat number, I'd like it to contain the respective entry from the m_nameList array. As all entries will be held in RAM, when the GUI is opened, all m_nameList array entries will be empty. As the user uses the program, they can highlight a row in the lstReservations list and then use the GUI textboxes to enter the customer's name which will then be populated into the respective array entry.
how to, when the GUI opens, ensure that the lstReservations list takes all of the blank entries from the m_nameList array and from there, I can highlight a row to carry out further methods on?
I want to reading in a excel file and extract the sCodenumber sDescription ans the sStatus and store them in a array : StatusComposeArray(5200) As MyCompose. After this I need this array for comparing outside this class. But as can you see the array is defined inside the sub: ReadingIn_ExcelFilesCompose [Code]
View 2 Repliesi've tried to extend on the default class size, but couldn't do so. example
[Code]...
why is it that there is no such thing as size when im sure that i could create a new size(x, y)
A c# class's single dimension byte array contains socket level instrument sensor data as per:
public static byte[] frameData
It's been a LONG time since I messed with VB, and I'm messing around with VB 2008 now.I'm trying to make a custom class with three variables,
ID (String)
Title (String)
Comments (Array of String)
[code]......
I 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 RepliesWhat is the difference between using the 'array' class in VB and just declaring an array like normal. In other words, what is the difference between:
Dim numOfTicketsPerDay As Array
Dim intNumOfTicketsPerDay(6)
As Integer
Is there any preference of when one should be used over another?
If I make the following array in a push button event and I want to put those array variables in a class array. How do I do that? I am just beginning to learn about classes in vb.net but I am having problems using classes and arrays.Is there any good tutorials on that subject.
[Code]...
I'm designing a small GUI Windows program that allow staff at a cinema to reserve seats for customers. There will be a total of 60 seats in the cinema. I have two classes in my program:-
1.) MainForm.vb - used for I/O actions and user interaction
2.) SeatManager.vb - used to hold and handle the background methods and functions that make the program work Here is the code for my MainForm.vb class thusfar:-
[Code]...
I have main class of Races with mulitple properties. One of those properties has been defined as another class Runners.
So I have a race with multiple runners and when I try to update the data i get an instantiation error.
For the life of me I can't get it to work.
This is what I am trying to do...
In the clsRace class I have defined :
PublicProperty clsRunner(ByVal index AsLong) As clsRunner
Get
[Code].....
I am New to <acronym title="Visual Basic">Vb</acronym>.Net. this is my first test. i try to create small address book. but i don't know what wrong. it compile perfect but when it run it give error and not work. is there any other way to add same class like in class inside array?
[Code]...
increasing the size of my array. i have this code but i don't know which of these code does not increase the size of my array even though i increment it.
This is the declarations:
Dim movieArray(0) As String
Dim ratingArray(0) As String
[code].....
What is the maximum size of a multidimensional array in VB.NET (in my case two-dimensional)? I'm using Visual Studio 2008, Framework 3.5 I found in msdn [URL]: "The length of every dimension of an array is limited to the maximum value of a Long data type, which is (2 ^ 64) - 1. The total size limit of an array varies, based on your operating system and how much memory is available. Using an array that exceeds the amount of RAM available on your system is slower because the data must be read from and written to disk." However, I am trying to use an array of data type single, with dimensions 64513 by 301 but Visual Studio seems to freeze when I execute the line to redimension the array ( Redim myArray(64513, 301) ). I have 4Gb of RAM and am using Windows XP (32-bit).
View 5 RepliesDoes a the size of the class affect the memory usage of the application? is it better to break big classes into smaller classes or just group them up into one big class.
View 2 RepliesWhat is the limit on the email subject in MailMessage? It seems to complain around 128 characters?
[URL]
My app is receiving data in blocks but I don't know what size data will be received until it is finished, unlike file reading. So my app loads the data in chunks of 1024 bytes and then stops when there is no data to read. My question is, is it possible to keep increasing the size of a byte array as the data is being received?
View 2 RepliesI want to write an extension method that works with all kinds of arrays (Integer, String, Decimal, ...). It returns an array of the same type and size as the input parameter array.[code]...
View 1 RepliesWhen you use array.length you get the size of the array and not the number of items in it.
For example:
Dim MyArray(10) as String
MyArray(0) = "Potato's"
MyArray(1) = "with"
MyArray(2) = "salt!"
MyArray.Length will return 11
How do I get the number 3? I am creating a class library so it's kinda hard to keep testing all kinds of methods until I get the right one .
I'm trying to find the sum of all the digits that make up the number 2^1000, which you may have guessed is from Project Eula. I think it's good so far except I'm just learning about arrays and dynamic arrays, so how will I know what the size of the index will be so I can specify when the Do loop should stop so I don't get an indexoutofrange exception?
vb.net
Dim BigNumber As Double = 2 ^ 1000
Dim DigitArray() As Char = BigNumber.ToString.ToCharArray
Dim Index As Integer = 0
Dim SumOfDigits As Integer = 0
[Code] .....
I want to determine size/length of an array that is, how many elements are in my 1 dimen array, can't seem to find the right method that works.
View 9 RepliesI m trying to manipulate some excel sheet data in visual basic but for tht i hv converted the excel file into text tab delimited file. now i m able access each column n row value as i want but the prob is the text file has to b input n the no of columns in it could be varied so i need a method to count the number of elements in th tab delimited array wen first time the text file line is read.
View 8 RepliesSearching for entries in a source
For Each m As Match In Regex.Matches(txtDisplaySourceCode.Text, regExString)
_rtnSourceCode_LinkHolder = m.Value
Return _rtnSourceCode_LinkHolder
Next
But i dont want to just return one instance if there is more. Want to be able to hold all the urls some where that can be accessible from any sub
I am having a small problem initilizating my array.I have created a class called Mine. And another class called Grid.Grid has a property called Mines of type Mine()()In the Grid Constructor i want to set the size of the array to be (TotalRows,TotalCols) but cannot seem to figure out how.
View 4 RepliesHow would I call a class from the following code?
'Calculate size of Desktop folder
Public Sub Ck_Box_Desktop_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CK_Box_Desktop.CheckedChanged
[CODE].......................
Ok I've tried for a while now but i cannot figure this out.I want to be able to take a text file of any size and convert it to a 2 dimensional array. Doing arrays with a set size is what i understand but i cannot figure out how to write a loop to find the size of the text file to be put into an array.
View 3 Replies[code]Is there any other solution by which we can initialise the array members using new?
View 5 RepliesHow can I resize the two dimensional array size without affecting its value?
View 3 Replies
