Create A Jukebox With 3 Different Arrays?
Jan 16, 2012So I have to create a jukebox with 3 different arrays, and 3 push buttons. Basically it looks like this:[URL]..
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[2008] Retrieving Data For Jukebox Application?
Jan 31, 2009retrieving data for my jukebox application I cam developing.I have 3 tables, Songs, Artist, and fk_SongArt(link songs and artist together).I am allowing the users to set filters base on song category, artist, langage etc...Would it be better if I query the database each time a user change the filter or is there is a way to filter data in a dataset, even when my artists are stored in another table.
View 7 RepliesBuilding A Jukebox And It Consist Of Listboxes And Text Boxes?
Apr 14, 2011I am building a jukebox and it consist of listboxes and text boxes. I have got it so that when the user doubleclicks on a song from the first listbox it moves into the next one. Problem is, when it gets there it should check if there is song waiting to play in the text box and if not move into the text box play position. also it has a timer function to run in between the tracks playing. I have tried deleting and re writing bits of my code but am getting a bit messed up with it now.
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Arrays - Create New T[] In .NET?
May 28, 2011How can I do the same as the following in VB.NET
List<T[]> result = new List<T[]>();
// single combination
if (k == 0)
{
result.Add(new T[0]); // T is function type argument of generic function How can I write the last line above in VB.NET?
I tried:
result.Add(New T(0)) 'doesn't work!
Create Control Arrays In .NET?
Mar 14, 2011In VB6 there is a feature called Control Arrays, where you name controls the same name and provide them an index value. This allows you to set a value by looping through the controls and setting each value. In VB .NET I can't create a control array?
View 6 RepliesShort Way To Create Arrays?
Jan 27, 2011In VB.NET, I create my arrays like
Dim myArray = New ArrayList
But isn't there a way to create an array with elements without having to make a variable?
In Ruby, the long way was
array = Array.new
Create A Dynamic Jagged Arrays
Sep 25, 2010I'm trying to create a dynamic jagged array. That is, one that i can increase the size of at runtime. Maybe its easier if I show you. I have a folder containing a varied number of files. What I want to do is set up a jagged array, with the file contents as the second array. So kind of like this:
Code:
FileList(0)
Filelist (0) (0) = Line1
Filelist (0) (1) = Line2
Filelist (0) (2) = Line3
[CODE]...
However, it throws a System.NullReferenceExeption when I try that. In addition, I don't understand jagged arrays all that well....Here is my code (that doesn't work). The jagged array must be accessible by other methods.
Code:
Imports System.IO
Public Class Form1
Public Skills()()
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Create A Scatter Plot With 2 1-D Arrays?
Mar 4, 2011my only objective is to create a scatter plot with only x and y axes. the data source should be from a 1 dimensional array. say i have these arrays:
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Create One Array From Two Other Arrays In Program?
Feb 20, 2012I have two arrays
a={a,b,c,d}
b={1,2,3,4}
now I want to create a 3rd array which should at least contains one numeric number and rest of alphabets, this code will generate unique usernames so it should not repeat the pattern of selection which is present in main array[code]...
Create A Multidimensional Array That Contains Arrays Of Different Lengths?
Jan 1, 2011Is there any way to create a multidinensional array that contains arrays of different lengths (similar to nesting arrays of different lengths in python).
Because if I were to declare a variable Dim accounts(2,2) As Integer all 1D arrays at each dimension have the same length. Is there any way to create an array so that this is not the case?
e.g The above code would create an array like this:
[[0,0],[0,0]]
but would it be possible to create this:
[[0,0],[0,0,0]]
Create A Tic-tac-toe Game But None Of The Tic-tac-toe Tutorials Use 2 Dimensional Arrays
Mar 14, 2010I am new to VB, trying to create a tic-tac-toe game but none of the tic-tac-toe tutorials use 2 dimensional arrays. Since tic-tac toe is 3x3 I created 9 buttons and want either an X or an O to appear depending on where the user clicks. I want one set of instructions to handle the multiple buttons. I was told to use Case statements.
This is what I have so far. Not sure how much is right but hopefully it gives you an idea of what I am looking for.
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How To Create A Popup Dialog With Lists Of Arrays
Mar 17, 2010I was wondering how you create a form with three lists. Each list representing a different array.
I guess the question is how do you take an array and make it into a list so it shows up on a list box?
VS 2010 Create Sequential File Arrays?
Nov 25, 2010reading words from a text file and displaying them at random.The format of the text file is....
verb
noun
answer1
[code]......
Textbox - Create Arrays Of Strings To Hold The Names
Jun 3, 2012I'm attempting to create a small app that allows a teacher to input 5 students with 5 test scores each. I need to create arrays of strings to hold the five students names, an array of five strings to hold each student�s letter grade, and five arrays of five single precision numbers to hold each students set of test scores.
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Create A Login System That Reads Usernames And Passwords For A List Of Arrays
Mar 25, 2009I want to create a login system that reads the usernames and passwords for a list of arrays:[code]I have managed to code the program so it accepts the correct username and password and sends a error message when they don't match. The problem I'm having is when the user enters a username that isn't on my Username list. The program always crashes when I enter say "admin1000".[code]
View 3 RepliesVB6 Used Recordsetsor Arrays - .Net Framework In VB2010. Datasets, Dataviews. Tableadapters, Arrays. Enums ?
May 9, 2010In VB6 I load a recordset containg all of the records (6 fields per record)in a table into an XArray and then manipulate the records in the array and then write them back to the original table. The array issorted by the first field (1 to maybe 8000 or more) I need to find records in the array by an ID field and then move them (because of some external criteria that happens many times) from say number 400 to number 375. Then all of the other records between 375 and 399 were renumbered up 1 to fill the gaps left by the move.
The XArray worked well as it could find and also move to a next record easily to facilitate the revisions to each record quickly. Everything is done in VB6 in code and nothing visual needs to be shown to the user until say 2000 of these external changes are complete. What is the best, most efficient way to do this in the .Net framework in VB2010. Datasets, Dataviews. tableadapters, arrays. enums ?
Integer Arrays - User Enter In Big Integers Using - Two Parallel Arrays
Dec 10, 2009My assignment is to have a user enter in big integers using what i think is two parallel arrays. I got this far but now im stuck. I think i need to actually convert the text box input into an array but i do not know how to do that. I am all over the place in this project.
'Created/ Revised by: Jessica Falcetta
'Cap 204 Final Project: Big Integer Project
'Project Purpose: To calculate large integers through parallel arrays
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Passing Arrays Through Fortran Dll From App Turning To Single Element Arrays?
Feb 2, 2010I have a VB.net console app and I am opening a function in a dll written in fortran. I am passing 3 arrays through the function by reference. When they come back out the otherside they ahve all tunred to arrays of only one element And that element is 0.I read on the internet somewhere that when doing this kind of thing it is a good idea to only pass the first element of the array into the function.I tried changing my function declaration to accepting single elements rather than single dimensional arrays, and now the arrays are the same length before and after the function call, but they don't seem to be changing at all, so i'm not sure that this is working
View 1 RepliesVS 2008 Arrays Displaying States/searching Arrays?
Oct 30, 2010the statement Dim state(49) As String and maintain a list of certain states. The list of states should always be in alphabetical order and occupy consecutive elements of the array. The buttons in the program should give the user the following options: (a) Take the state specified by the user in a text box and insert it into its proper position in the array. If the state is already in the array, so report. (b) Take the state specified by the user in a text box and delete it from the array. If the state is not in the array, so report. (c) Display the states in the array. "
Private Sub states_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
state(0) = "Alabama"
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Combo Boxes And Arrays - Create For Random Numbers And Place Them Into For Different Text Boxes
Nov 3, 2010So as the name states; I am a newer coder.
This is the code i have:
Public Sub RandomNumbers()
Dim s(4) As String
Dim RandomNumber As Byte
I don't know if you can tell what I am trying to do here, so I will try to explain. I what to create for random numbers and place them into for different text boxes. I also would like to do this with combo boxes and their selected indexes. So if the combo box has 10 items in it; the new selected index would be the random number generated above.
Timeout Using SQLite - Create A Database And Several Tables - To Populate The Tables With Data From Arrays
Jul 25, 2012I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
Comparing Arrays :: Possible Without Iterating The Arrays?
May 3, 2010I was wondering if anyone knows a built in method ( LINQ say or a LAMBDA expression or other way ) that you can compare2 arrays - collections that would be valid for an equivalent 3rd array - collection which is a combination of the 1st two.
As an example consider;
* * *
A L E
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Sort Three Arrays (the Other Two Arrays Are In Sync With The First)?
Oct 13, 2009How can I sort three arrays so they are sorted together (the other two arrays are in sync with the first)?unsorted unsorted unsortedarray1]CODE]....
View 9 RepliesClass With Dynamic Arrays Inside Another Class Which Also Has Dynamic Arrays?
Nov 15, 2011Below you will find a code sample that I have dummied up to try and demonstrate the issue I am having. However, this is just a dummied up piece of code. The actual program has noting to do with STUDENTS or TEACHERS. Basically, the problem I'm having is trying to have a CLASS within another CLASS each of which contain ARRAYS that need to be dynamic in size. The sample has a CLASS called STUDENTS that can have in theory many students, the number of which are unknown to the CLASS. I need to be able to add STUDENTS to the ARRAY programmatically.
The CLASSROOM Class should also be an Array since each TEACHER will have MANY Students. There will be only 1 Teacher for a given classroom but the SCHOOL will have MANY CLASSROOMS. Again, I need to programmatically add Teachers and Students without having predefined Array sizes. The code I have listed below will NOT work but it demonstrates what I am trying to achieve. I want to be able to reference the CLASS by using something like this ...
School(iTeacherIndex).Student(iStudentIndex) = "Rick Smith"
I feel like I should be able to use ARRAYLIST in both classes but haven't been able to get it to work. I've tried DIM'ing as ARRAY and can't get that to work either.If I can get ARRAYLIST to work then I shouldn't need to worry about expanding the array via UBOUND (if it's even possible).The REAL question is "How do I have a CLASS within a CLASS, each of which has ARRAYS that need to be dynamic in nature so they can be expanded as needed? The size of the array cannot be determined ahead of time".
REMEMBER . . . the actual program has nothing to do with Students and Teachers. This was just my way of demonstrating the issue using an analogy that I thought everyone could understand. The actual Class is much more involved.I have purposely hardcoded some values just to make the sample easier to work with. This is NOT how I normally program but is just here to hopefully make things a little more clear.
Here is the sample code . . .
'***********************************************************************************
'***********************************************************************************
'***********************************************************************************
'Here is the code that is in the form - This obviously doesn't work
Private Sub TeacherTestDemo()
Dim iTeacherIndex As Byte
Dim iStudentIndex As Byte
[code]....
.net - Using Arrays With Asp.net And VB?
Oct 31, 2011Sorry, I'm sure this is something that has been covered many times, but I can't find quite what I am after.
I have a single row data table which contains various settings which are used within my web system. I have been toying with turning this into an XML document instead of the single row datatable, would that make more sense?Anyway, so, given that this is one record, there is a field called "locations," this field contains data as follows:
locationName1,IpAddress|locationName2,IpAddress|etc
The ipAddress is just the first 5 digits of the IP and allows me to ensure that logins to certain elements (admin section managed by staff) can only be accepted when connected from a company computer (ie using our ISP) - this is a largely unnecessary feature, but stops kids I employ logging in at home and stuff!
So, as the user logs in, I can check if the IP is valid by a simple SQL query.
SELECT ips FROM settings WHERE loginLocations LIKE '%" & Left(ipAddress, 5) & " %'
What I need to be able to do now, is get the name of the users location from the dataField array.
I've come up with a few long winded looping procedures, but is there a simple way to analyse
locationName1,IpAddress1|locationName2,IpAddress2|etc
as a string and simply get the locationName where LoginIp = IpAddressX or am I going about this in a totally ridiculous way and should turn it into an xml file? (which will then create a whole load of other questions for you about parsing XML!!)
Need Some Example Of Use Of Arrays
Aug 28, 2009Arrays in Visual Basic When you use arrays, you can refer to multiple values by the same name, using a number called an index or subscript to distinguish them from one another. Arrays can shorten and simplify your code, allowing you to create loops that deal efficiently with any number of elements.How to Use Arrays, Why We need it to use.
View 1 RepliesAsp.net - 2 Arrays To Serialize?
Jun 23, 2011I have the following code which works well:
Dim dept As New ArrayList
Dim forename As New ArrayList
objJSONStringBuilder = New StringBuilder()
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Eventually, I will want to add more columns, i.e. surname.
Creating An App Using Arrays?
Apr 12, 2011I needed to create an app using arrays. The goal of the app was to input a certain amount of points and display their level of contribution and any benefits they receive (for example: enter 500 points -> display "Gold level" and "Fieldhouse privileges, Parking at game, Football tickets"). I was supposed to use a loop and intLevel array to find the donor level that corresponds to the input amount, display the donor level using the strLevel array and using the strBen array display the benefits that apply to this donor.
What I was given:
Dim intLevel() As Integer = {50, 100, 200, 500, 1000}
Dim strLevel() As String = {"Contributor", "Laker Club", "Bronze", "Silver", "Gold"}
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My app works, but my prof's comments on it were to get rid of the "+ 1" on the first "Do Until" loop, cross off the second Do Until loop and he just wrote "not quite" next to the bottom two lines.
So basically, I'm wondering how I would write code to search for the amount of points (without having to add the "2000" so it doesn't blow up on me) and matching it with strBen. To be honest, I don't understand why I am not getting points for this.
How To Intersect Two Arrays
Jun 11, 2009I'm working with VB.Net, and have two one-dimensional Arrays. Is there an Inbuilt function for finding the elements that are common to both of them? Or do I have to write one for myself?
View 4 RepliesInterference Between 2 Arrays
Apr 26, 2011I'm having problems with 2 2-dimensional arrays. Whenever I change the value in a cell in one of them, the value of cell with the same indices changes in the other one.[code]
View 3 Replies