Saving & Retrieving A Multidimensional Array To A File?
Jun 9, 2009
I'm working on a project with a large multidimensional array
resrv(200,12,31,33) it keeps track of information on specific dates within a 200 year range.
What I'm looking to do is save the array to a file so that I can load it again when the program is started.
In VB 6 I used to be able to use a simple for next loop into an open file and load it the same way. It doesn't seem to work the same way with Fthe filestream class in VB.net
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Dec 20, 2011
I can't seem to get the code structure I'm looking for when importing a csv file into an array. The CSV format in question is 69 columns, and unknown rows since it depends on the time length of the data capture. Over the past 3 days I have tried many methods and can output it all to a listbox, as shown below (column headers appear in order), however when I try to put it into an array it only reads the first column. Am I missing something in the declaration of the array, or do I need to use an arraylist? Every permutation doesn't seem to get the results I seek, or I just plain crash the program.
[Code]...
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Apr 15, 2012
How i can make my project portable.whenever i run my project on another computer it gives an error for wrong path. any code which can choose its path in resourses or debug folder to make a file in project.and whenevre use that file its easily accessable without any error.and file saved in a name series.
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Feb 1, 2012
I'm working on a new application for one of my Managing Editors at my company. We are wanting to build an application that only has 4 combo boxes for user options and then according to the options that the user selects, the application will spit out 3 random lines of text that can be copy and pasted into another application that we use.We are in the process of creating a rather large (1000's of lines) CSV file that we are going to use as a repository for the text. Let's call the data file SRG9000Data.csv..I'm almost 100% certain that I'm going to need to read in the entire datafile as an multidimensional array because we are setting up the CSV file as follows:[code]For each of THOSE categories, I'm looking at having 8 possible items for <Sports>, and 3 items for <PlayType>, <GameImpact>, and <Scoring>. <Text> is being use as a possible Text Phrase that the system can select from randomly provided that the other area's of the array are met.The CSV file will have 1000's of lines. Of those, the system will "filter" though all of them so that ONLY the ones that meet the selected criteria can be used, then choose 3 of them randomly and use that as output.
Extra information: I am currently establishing that the CSV file being used is setup as 0-7 for <Sports> (0 = Baseball, 1 = Basketball, etc..), 0-2 for <PlayType> (0 = Defensive, 1 = Offensive, 2 = Other), 0-2 for <GameImpact> (Negative, Neutral, Positive), and 0-2 for <Scoring> (0 = Non-Scoring, 1 = Other, 2 = Scoring); <Text> is a String.I am clueless when it comes to setting up an array like this; It's been many many MANY a year since I worked with array's in QB and I feel I may need more than a refresher course.Now, if I'm understanding correctly from some of the forum lurking i've been doing, multidimensional arrays CANNOT be of mixed type, correct? If this is the case, the how can I read the entire CSV file into an "array" (if you will) so that it contains Integers AND a String? [code]
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Feb 4, 2012
I have to store a text file in the form of byte array and has to read it back from the database and need to write on text file. What can i Do? I am using sql server 2008 R2 and vb.net
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Jun 10, 2011
I have been searching and searching and cannot find out how to do what I'm looking to do, that is the only reason I would post a new thread.[code]...
After reading the file, I want to load the NameId, the ColourId and the Text into a multidimensional array. Anything I have found about loading into an array shows text being separated by small delimiters like commas, but this I cannot do because I need to use this format. What I am wanting to do is load all of the NameId's into a listbox and when a certain NameId is selected, it will bring up the Text in a TextBox and the Colour value in a ComboBox.
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Jun 22, 2012
I have a multidimensional array which will hold 3 bits of value and value will be added through a loop by reading from db. When it come this line of code:
*MenuAccess(.Fields("GROUPNO").Value, .Fields("ITEMNO").Value, .Fields("SUBITEMNO").Value) = OKNO*
It's hitting error, 'Object reference not set to an instance of an object.'
Public MenuAccess(100, 30, 50) As Boolean
Private Sub RtGetMenu_Access()
Try
[Code]....
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Jun 7, 2009
Hi can someone show me an example of a multidimensional associative array in vb.net. Need array to hold peoples name, there age and a few other settings. Want to be able to use a Dictionary to use People.Add.
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Apr 16, 2009
I've got a 3-dimensional array that I'd like to clear.
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Mar 17, 2010
I'm writing a game in visual basic 2008 and things are going fairly well with it for the most part.. well until today.. I can declare a 1 dimensional array of a class just fine but cannot for the life of me get the syntax right for a multidimensional array. I usually don't have many issues in writing in VB but this is the first large scale program I have ever written in VB2008 and the 1st large scale uses of classes in VB as well
Here is my code to better illustrate my problem here is the class..minus most of the properties Public Class Objectives private zone as Integer private TZone as integer Public Property TargetZone As Integer Get Return TZone End Get Set(ByVal value As Integer)
[Code]...
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Oct 23, 2009
I'm very new to VB.NET and I suppose this is a little big for a first project.I've done the same thing in other languages so I figured it wouldn't give me much trouble.I'm working on a map editor program for a 2D platformer game.The map will be an array of a structure which contains the width, height, and tile elements of each layer. the tile elements are stored in a 2D array within the structure.[code]That didn't give an exception but I'm not sure that it actually redimmed considering the second assignment command still crashed.
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Nov 8, 2011
I am writting a vb.net program that I want to read in data from Excel and then populate a multidim array with it.I have been able to import the Excel data into a DataGridView (haven't been able to go directly to an array). Now I am trying to loop through the DataGridView to populate the array.This is were I am having troubles.[code]
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Sep 23, 2011
vb.net 2005.
I have profitMarginArray(29,3) <29 is actually a variable, but figured I'd put in a number for the example> and what I need is to retreive elements 0 and 3 sorted on 3 in some way shape or form. The biggest problem is element 3 isn't unique so there could be 5 that have the same value (56.34 for instance) so a sorted list is out.
The current array could look something like
Item1, .34, .75, 54.67
Item2, .32, .75, 57.33
Item3, .29, .5, 42
[Code]....
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Apr 15, 2012
Is there at all a way to sort (numerically) a multidimensional array?
I have an array that is as follows `dim points(23,1) as String`
The first dimension of the array has the players names in, the second dimension of it has their cumulative points, so I want to sort the array by points and maintaing the correlation of players name to points
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Dec 12, 2010
* I posted this in VB forum at first by accident instead of .Net* I am trying to create a console application that computes the row and column sum and prints the elements with the resulting sums for each row and column.
[Code]....
My column sum code is currently showing the row sums. I need the column sums to display in descending order. So i know it would require a sorted array, but i'm not sure how to go about doing that given i can't get the correct values to show up. So I would need it to display as "Column sums are 12, 20, 13, 24, 51. " and then the next line would be "Column indexes are 1, 3, 2, 4, 5."
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Nov 23, 2010
I'm trying to build up a multidimensional array which will hold two bits of info for each record in a database e.g. id, description.[code]...
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Mar 23, 2010
I need to count number of repeating and position where they repeat of all number in multidimensional array like this:
1 2 1
1 1 2
2 3 1
And result need to be:
Number 1- two times on position 1, one time on position 2, two times on position 3
Number 2- one time on position 1, two times on position 2, one times on position 3
Number 3- 0 on position 1, one time on position 2, 0 on position 3
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Mar 16, 2011
if i have a multidimensional array:
dim test(,,) as string
how can i loop through the array to find if another variable is contained in the second dimension of the array
dim x as integer = test.indexof(OtherVariable)
obviously above won't work
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Mar 4, 2011
If I have the following array:
Dim Array(4, 10) As String
Array(0, 0) = "100"
Array(0, 1) = "200"
[code]....
How do I get the following count:
0 = 2
1 = 4
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Jul 12, 2011
I have a 2 dimensional array and also a 2 column listview box. I am able to insert array (0,i) into column A, but i do not know how to insert Array(1,i) into column B.
[Code]...
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Mar 26, 2012
I am trying to make a jagged array that has,
3 columns
with 5,4,4 rows respectively
that each have 2 rows
that have a varying number of rows, for example 6,9,5,6,4 I have the first part setup but I don't know how to get to another level of the jagged array.
Dim potentialStructure()() As Short = {New Short() {0, 1, 2, 3, 4}, New Short() {0, 1, 2, 3}, New Short() {0, 1, 2, 3}}
And how would I access an element at say, the lowest level?
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Oct 29, 2010
I have a multidimensional array (not jagged array) that saves data from rows and columns of an excel spreadsheet. After it completes recording the data from Excel, I need to pass the array to another function.I understand how to pass a jagged array, but not a true multidimensional array.
Can someone point me in the right direction? I've done some searching on this site, and others, but most of the info only includes single dimension arrays or jagged arrays.
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Apr 30, 2009
I am trying to use a simple quicksort routine for a multidimensional array but cannot figure out the syntax. I am stumped because it works fine in VB6 but no luck in .Net
Array Declaration:
Dim sArrIn(25000, 3) As String 'sort key (pkg, kitting, zip), kitting, data
Function Call:
[Code]....
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Oct 3, 2009
Dim array1(9,2) as String
So basically, 10 rows and 3 columns and say I want to sort them by the values in the 3rd column.
Each row is essentially a record of data and must be kept together.
Now I know that you can't use the array.sort method but would I have to use a bubble sort or something for this?
What's a good way to manipulate the records while still keeping each row linked together somehow.
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Dec 12, 2010
I am trying to create a console application that computes the row and column sum and prints the elements with the resulting sums for each row and column.[code]My column sum code is currently showing the row sums.and the rowsum code is showing a continuous sum, rather than a sum for just that row.
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May 15, 2012
First time I've had occasion to do this, but how would you represent the data in a SQL database table in a multidimensional array? I've heard tell of multidimensional arraylists but have no idea how to use them.
Here's what I have -
The table is 15 columns across and a varied amount of rows depending on the query.
rawData is an arraylist. finalData is an array.
Dim myReader As SqlDataReader = sqlcom.ExecuteReader
While myReader.Read()
[Code].....
Obviously, this gives me a long list of all the data from the query. I want to break it in rows.
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Jul 12, 2011
I am trying to initialize a multidimensional array. Here is my syntax; this does not create errors but it does not store all values either. Although it correctly prints out all records in this snippet,
dFirstWeek = CDate(FirstWeek)
dFirstWeek = DateAdd(DateInterval.WeekOfYear, -1, dFirstWeek)
Dim dFirstDay As Date
Dim arrWeekYear(5000, 1) As Date
Dim i As Integer = 0
Dim j As Integer = 0
[Code] .....
But this time, only one "j" record appears per "i" record. Why is this? And then after these few records, many dates resembling null dates appear: "1/1/0001". So why do all records appear in upper section, but not from lower? Did I insert values wrongly into this array? And it does not have to have fixed number of rows, just a fixed number of columns.
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May 2, 2011
I'm working on a program that when you click a button called new it pops up a new form asking for you to enter a directory location. If the directory exists it saves it into this file:
"C:WindowsSettingsButtonVariableSaves.ini"
I already have working code that saves each directory entered into the ini file on its own line.
Now in this code I'm trying to call each variable back from the ini file when form1_loads and set it to an array called ary() so later I can set the first 10 saved within the array.
So later:
button1.text = ary(1)
button2.text = ary(2)
and so on to
button10.text = ary(10)
and the reason I set the array to record all lines even if theres more than 10 because I want to be able to add more buttons later on.
Here's my current code for saving lines to an array:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim FILE_NAME As String = "C:WindowsSettingsButtonVariableSaves.ini"
[Code]....
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Aug 24, 2010
i want to save and load an array as and xml file. what is the easiers way to do so.
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Jun 29, 2011
my code doesn't show anything when ever I start on my button "start recording" it starts to record every keystroke on the and show it in a textbox and after that i am trying to get that data into text of a sql 2005 database with vb vs2008 but when ever I click on the button to show me the saved data , retrieve from database, it doesn't show anything, why?
and I also want to create new row everytime the new object is created...thnx
Databse Class
[code]
Imports System.Data.SqlClient
Public Class DataSaver
Private sqlConnection1 As SqlConnection
[Code].....
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