Get One Dimension From A Bi-dimensional Array In .Net?
Feb 26, 2010
I have an application in VBA that gives to my VB.Net dll one bi-dimensional variant. It is a an array, in which every component is a another array containing two positions.
I want to get this two-position array. When I am using VBA I can access directly the data from each position by doing:dataArray(index, 0) or dataArray(index, 1)And when I want to get the two-position array I can use:
Dim posArray as variant
posArray = dataArray(index)
[Code]...
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Sep 22, 2011
I have a gridview in my asp.net website that and I use vb for the code behind. Each time a row is bound an even called the Gridview_RowDatabound event is fired. So what I am doing is looping through all the cells in that row: [Code]
Problem is I get an error saying redim can only change the rightmost dimension. It would suit my needs to change both dimensions here as my final result will be to total each column in the array. what other method can i use if arrays don't suit this task.
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Feb 5, 2009
I have an one dimension string array ar1
ar1(0) ="One;is;a;dog;"
ar2(1)="Two;is;a;cat;"
...
I want to convert ar1 into ar2 which is a two dimension array
ar2(0)(0)="One";ar2(0)(1)="is";ar2(0)(2)="a";ar2(0)(3)="dog"
etc
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Feb 17, 2010
I have a string containing many lines. Each line has many values separated by commas. Basically it's in CSV format. The number of lines is variable but the number of columns is always 7.
I can get each line into a one dimensional array using Split(Var, Chr(10)).
I'd like to make it a two dimensional array where the second dimension contains each comma separated value.
I've got
Dim VarArray1() As String = Split(VarText, Chr(10))
Dim VaryArray2(0 To VarArray1.Length - 1, 0 To 6) As String
Is there a quick way to get the contents of VarArray1 into VarArray2. I know I can do the following.
For Counter = 0 to VarArray1.Length - 1
Dim line as string = VarArray1(Counter)
Dim Values() as string = Split(line, ",")
For Counter2 = 0 to 6
VarArray2(Counter,Counter2) = Values(Counter2)
Next Counter2
Next Counter
But is there a quicker way to do it that doesn't require passing through each element of VarArray1 and then passing through each element of Values.
The eventual goal in all of this will be to find the highest value in the 3rd column (the arrays are strings at this point because not all columns are numeric). To do that once I get the values into VarArray2 I suspect I have to pass through each element VarArray2, i.e. VarArray2(Counter,2). Unless I can copy the whole third column into a SortedList?
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Feb 26, 2012
I have 9 1-dimensional arrays of bytes and 1 of them is empty, I want to make the empty one equal to the others put together like you would a string:
Dim bla As String = "bla" & "bla" & "bla"
'now bla = "blablabla"
but instead:
[Code]......
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May 1, 2011
How do I use only one dimension of an array? What I have going on is: I have an array suit(1, 4) and rank(1, 13) to represent a deck of cards. What I want to do is take the value of the rank of the selected item in my listbox to be able to add it to the rank of other selected items in the listbox (essentially adding the players hand together). [code]...
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Jan 12, 2010
I am having trouble conceptualizing how to create and load my 3d Array. The Project does the following:
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Nov 3, 2011
I had insert value from datagridview to array
but how to make the array become for loop function?
Dim rowNo As Integer = 0
counter = dgv.RowCount()
[code].....
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Oct 6, 2010
I need to add an additional dimesion to outputArrayOfBits() in the code below which I hope conveys my intention. I need to convert a one dimensional array of 1 to n boolean (bit) values into arrays that group them by 8's so the output can be consumed by someone needing these values to be in hex format (0000 1111) = 0F How do I change the declaration of 'outputArrayOfBits and the nested control loop to achieve that?
Dim inputArrayOfBits As New BitArray(32, True) ' I can't change this.
'Create array of bytes containing what will be sent out has hex numbers 0 - F
'outputArrayOfBits(0) = (1,1,1,1,1,1,1,1) 'Hex value FF
[code]....
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Apr 21, 2011
I need to manipulate data for 1000 boxes, each one of these boxes has 8 variables.How to declare an appropriate array? and how to load the array with the 8 variables for each box?
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Feb 20, 2011
I am trying to create a multi dimension array that will search each row of the array and total up the number of 0's 1's, 2's, and 3's. I believe that I need to create some sort of looping structure that will search through each row of the array.I have created a listbox that will allow the user to pick which row of the array the program will search.This is what I have created so far, but I am only just learning and I am having trouble wrapping my head around how arrays work. So I'm not sure if I am on the right path or not.
Dim racescores(,) As Integer = {{0, 1, 0, 3, 2},
{1, 0, 2, 0, 0},
{0, 3, 0, 1, 0},
[code].....
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Jun 22, 2011
I'm trying to return changes to array data, including redimensioned arrays, from within a function call in code similar to:
fault = MyFunction(Array1, Array2)
Public Function MyFunction(ByVal inObj1 as UserStruture(), ByVal inObj2 and Integer(,)) as String
Dim myResult as String = "Failed"
Dim tmpStruct() as UserStructure = inObj1
[Code] .....
This works fine in updating the input array 'Array1', only when the redimensioning of tmpStruct is NOT performed. After redimensioning tmpStruct, the redimensioned array is passed back successfully into 'inObj1' within the function 'MyFunction', but is not passed out of the function call; i.e.
fault = MyFunction(Array1, Array2) -
The dimension of array 'Array1' out of the function call remains as it was before the function call. However, the data change; i.e.
tmpStruct(0).Nam = "New Name"
is passed successfully out of the function call.
Why the Redim operation is not passed back out of such function calls. I would like to return changes to arrays 'Array1' and 'Array2', plus a result string from the function call if I can. Furthermore, I would also like to change the dimension of the array within the function call, if required, and return the complete redimensioned array back out of the function call.
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May 13, 2010
I have the following array in my project that I'm trying to redim without losing the values.The problem with redim preserve is I can only redim the last dimension of the array. I want to redim the 2nd dimension without losing data. How do I get this to work?[code]
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Oct 18, 2011
i have used in vba 3 dimensional jagged arrays where i had up to 10000 rows. i am now transferring this to vb.net and learnt that it would be better to work with lists. the dimensions are such as (30, 10000, 30). how would i structure this by using lists?
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Sep 7, 2010
I've managed to make some single dimension array lists but I can't figure out a multi dimension arraylist.
Here's what I'm trying to do:
I have a database (mdb) with 5 columns that I want each row to be in an array list.
In PHP what I'd typically do is:
$array[$field1] = array($field2,$field3,$field4,$field5);
How I do the same in vb.net so anytime I need to fetch an item for a specific for the row1 I could call it?
For a single dimension I could do the following, but I can't figure out how to add more fields to a single array row:
Dim tmpArrayX As New ArrayList
tmpArrayX.Add(field(0))
tmpArrayX.Add(field(1))
etc...
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Feb 3, 2011
If my array is A(i,j) can I use Array.Clear to zero all of the elements for i=2, for example. It does not work as I expected.
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Jul 19, 2011
If my array is A(i,j) can I use Array.Clear to zero all of the elements for i=2, for example. It does not work as I expecte
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Mar 14, 2012
I retired recently from a job where we had VS2010 Professional for doing ourdevelopment. Now that I'm retired I can't afford "Pro" and cannot find the component than looks like this (see above). Is/was that component left out of the "Express" version? Do I have to "load" it (and, if so, what name should I look for)? I vaguely remember it being some kind of container for other components.As a follow-up question - can anyone provide a (readable) example of creating a two dimension array of this item I could study?
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Mar 28, 2009
I have a grid 10x10, at present is in the form of a multi-dimensional array:
my_Array(10, 10) as char
[Code]...
Additionally this shape can be in any orientation and more than 1 as in the above example.Does anyone know a quick way to do this? e.g regex?Or alternatively achieving the same result by using a different structure rather than a multi-dimentional array?
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Sep 28, 2011
I'll explain what I'm working to eliminate the assumptions of a brute forcer. I'm working a Random SQL Data generator. What I need is a way to create a multi-dimensional array from multiple word lists, 1 dimension per word list. I have tried a few different things and nothing I've tried works. However, I have got it to work with a single word list and an array of 1. I figured there is a more efficient way of doing this than writing a massive block of select case and using multiple 1 dimensional arrays, this would end up very messy and inefficient it seems.No this is not for homework, this is for personal learning use only.I would post my code, but like I said, nothing I've tried comes close to working.
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Feb 9, 2010
I am having a problem understanding the following error message:
Value of type 1-dimensional array of string cannont be converted to 2-dimensional array of string because the array types have different numbers of dimensions This line seems to be causing the error:
New String((13) - 1) {}
I did a Google search on this but didnt come up with anything useful. I didnt even change the code.I just found this example online and copied/pasted it into a project that Im working on.
All code is listed below!
Calendar.aspx.vb
Imports System
Imports System.Data
[Code].....
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Aug 25, 2010
I need to append STRINg to Array and cast it 1-dimensionalArray
Dim remoteFileNames(0)
As
String
[Code]....
Here "FtpRemoteDirectory" is a string and ftpFileNames() is the Array String which list the FileNames.
and remoteFileNames is 1-dimension array
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Jan 7, 2010
I have this 2D array:
Private _Chars As String(,) = {{"`", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "="},
{"¬", "!", """", "£", "$", "%", "^", "&", "*", "(", ")", "_", "+"}}
[code].....
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Jun 9, 2011
I developing a roster application (asp.net with VB + sql server) to let user input shift duty record, proposed screen as follows:for the database design, each staff will have one record per day.[code]I want to create a multi dimensional array to bind the gridview.Is that correct that I create a arraylist (for 7 days) and then a subarray for each day? How can I create a 7 dimensional array & sub array under this 7-D array in asp.net + VB ?
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Jan 23, 2009
How to redim a two dimenational array in VB.NET, when it reached it's upper limit,.Also want to preserve the data.
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May 10, 2012
I've been working on a VB project where I use a 1st drop down list to select a movie category and then in the 2nd drop menu, movies from that category will be displayed. The movies are stored in a 2-dimensional array by category. I've been able to edit my array but I'm having problems with my .AddRange() function. What would I have to put in those parentheses for the list (for each category) to appear in my 2nd combobox when the category is selected?
[code]...
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Aug 11, 2011
Ive got a jagged multi dimensional array, how to work out the length of a single row of the array so;
My array is ;
CODE:
And i wish how to find the length of this;
CODE:
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Apr 1, 2010
I declare 2-dimensional array at class level
Dim delItems(9, 9) As String
The array elements are then each set to "EMPTY". I create a new form in memory
Dim frm As New Form
I create a new DataGridView add columns to it and add it to the new form
Dim d As New DataGridView
frm.Controls.Add(d)
Now the problem.....this code give error when try to load contents of 2-D array into DGV:
For i As Integer = 0 To 9
d.Rows.Add()
For j As Integer = 0 To 9
d.Item(i, j).Value = delItems(i, j).ToString
Next
Next
Error is ArgumentOutOfRangeException (Index was out of range...)
When I check value of loop control variables, i = 0 and j = 1
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Feb 23, 2010
For my programm I am supposed to store the minimum points in a five-element, one dimensional integer array name points. And I need to store the grades in a five-element, one dimensional string array named grades. These arrays should be parallel arrays. I am supposed to code the display grades button click event procedure so that it declares both arrays. It also should search the points array for the number of points entered by the user, and then display the corresponding grade from the grades array.
Here is my code:
Option Explicit On
Option Strict On
Option Infer Off
Public Class Grades
Private Sub exitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles exitButton.Click
[Code] .....
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Dec 14, 2010
I want to convert a stringbuilder to a matrix.[code]...
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