How do I create a multi dimensional array in visual basic. For example I have a soccer team with players. Each player has an id, first name, last name, address, phone number. How would I represent this using a multi dimensional array?
View 1 RepliesI have an SQL statement like:
SELECT FNAME, LNAME, CITY from EMPLOYEE
How do I create a multi-dimensional array from a datareader which should store values like:
John, Doe, LA
Mike, Johnson, PASADENA
Freddy, Kruger, Long Beach
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:
I need some advice to accomplish this, i have a datagridview with this data:
Column1 Column2
item1 3
item2 1
item1 2
item1 5
item2 3
item3 1
item1 3
I need an array with distinct values of column1 and the sum of the values in the second dimension of the array: ar(item1,13), ar(item2,4),ar(item3,1).
I don't know how many items i will have, so i don't know the correct dimension of the array...
Is it possable to remove a row from a multi-dimensional array?
View 5 RepliesI'm writing an application in VB.NET and face the following issue. I'm trying to create an interface that will allow the user to select their availability given a range of times and the days of the week. I want to create checkbox controls in a tabular form with two indices that I can use to refer to a certain time range and a day of the week.[code]I followed the article found here which creates and exposes a control array,however it is not multi-dimensional. Does anyone know of a similar way to dynamically generate controls and store them in a multi-dimensional array in VB.NET?
View 2 RepliesI was looking for a function I need in internet but I didn't find it... I need to sort a multidimensional array(matrix).. for example
Original matrix
1,b,3
2,c,5
3,a,1
I need a function, lets call it magic() xD with 2 arguments, the matrix and which col to sort first...so..the result of magic(originalmatrix,1) could be..
3,a,1
1,b,3
2,c,5
How can I make it ?
In my football sim I am trying to save all the info from a game. There are two defined dimensions to this array. The first is the number of weeks(17 always) and then the number of games per week (Number of teams /2). The plays themselves are unknown in quantity so I decided to use List of to store them. With this type of multi-dimensional array that is also a List of I am having trouble with the Get and Set properties. I have a member variable declared as:
[Code]...
What would be the best way to load and save a multi-dimensional array (of bytes). I've looked through streamreader tutorials but it always seems to instructions on how to save strings. I also know there's a very easy way to save a one-dimensional array, but it doesn't work on multi-dimensional ones. What should I be reading up on?
View 5 RepliesI am attempting something along the line of below mentioned code. Though it works in single dimension array. How to make it work with 2-d array?
Dim arrayord(,) As String = {ds.Tables(0).Rows(3).ItemArray, ds.Tables(0).Rows(23).ItemArray}
But it throws the following error.Error 8 Value of type '1-dimensional array of 1-dimensional array of Object' cannot be converted to '2-dimensional array of String' because '1-dimensional array of Object' is not derived from 'String'.
I am having issues assinging values to a multi-dimensional array.
I am trying to build a 2 col, unlimited row array and populate with data from a data reader.
Dim tblArry(,) As String = {}
If reader.HasRows Then
While reader.Read()
[Code].....
When I use a Jagged Array I can get this to work. The Reader portion is workig just fine, but the coding is just not clean for this problem.
I think I need a two dimensional byte array I currently have something like this:
Dim MbyteData(196608) As Byte
' Open the file that is to be loaded into a byte array
Dim oFile As System.IO.FileInfo
oFile = New System.IO.FileInfo(sFilePath)
[code]....
I now need to load several files at once (say four) so I need four arrays of 196608 bytes and I want to reference them by a number - 0 to 3, assuming the array is zero based. If I use Dim MbyteData(196608, 3) as byte or Dim MbyteData(3, 196608) as byte the syntax seems to be correct but I hit an error ("Number of indices is less than the number of dimensions of the indexed array") when I try to add the extra dimension to the stream read with something like oFileStream.Read(MbyteData(index), 0, MiByteCount).
I have a multi-dimensional array storeHand(20,6) which stores 6 ints. The int at point 0 in each array represents a rank. So the array ends up looking like this:
(7, 0, 0, 3, 5, 7)
(6, 2, 3, 0, 6, 5)
(5, 0, 0, 0, 13, 4)
(8, 0, 0, 0, 0, 3)
(2, 0, 0, 0, 0, 1)
I want to re-order the array so that the higher the integer value at position 0 is, the higher it's position will be in the sortedHand(20,6) array. So as above, I'd want sortedHand(20, 6) to look like this at the end:
[Code]...
I am trying to turn data in a text file seperated by spaces into a 2D array.
It is for a math game. The data is statistics based on the performance of the user. One line looks like this "John Doe 0 0 1 3 0 6 0 22"
I need to put the line into an array and then be able to search by name to display the results. I keep getting extra spaces in the input of the array so the data isnt where it should be. It seems that the first entry works correctly, but appended lines do not enter correctly.
Sub ResultsToFile()
Dim FILE_NAME As String = "C:\Student_Results.txt"
Dim RecordString As String = NameForm.PlayerFirstName & " " &
[Code].....
my app reads 40000 lines of data fom a csv file into a two dimentional array of 30 items and i need to sort it by one of the items that is a date. is there a way to do this in Vb.
something like this
array1(40000,1) = name
array1(40000,2) = city
.
.
array1(40000,30) =date
I'm currently trying to make a vocabulary/flash-card program so I want an array that can store multiple values per item. That way I can shuffle the "cards" (array items) while keeping the word, definition, and part of speech on the same "card". So if I where to access the array I would want to be able to do something like this:
Dim vocabList as VocabArray
vocabList(0).Word = "blah"
vocabList(0).Definition = "blah"
vocabList(1).Definition = "blah"
And then if I where to re-arrange them the properties would remain together but just in a different spot of the array.I can get really close to this using an Item Structure and declaring the variable name with () but the problem is I have to include a number with () and I need to be able to add infinite values to the array, I can't have a set number.Also I would prefer to make it like an ArrayList as it has .Add, .RemoveAt, .Insert etc. In normal Arrays there's no easy way to add, you have to resize and stuff.
Anyways here's close to what I want, but I can't have a set amount and I'd prefer the ArrayList structure so I can just have like Array.Add and then have a Item added onto the end with 3 variables on it. The only thing is that with .Add you usually put something in paranthesis after it to denote the value to add, but if I have 3 possible values then I would have to have parameters for it or something, like .Add(Word, Definition).
Structure SpecialArrayList
Public Property1 as String
Public Property2 as String
[code]....
I was planning on using very similar code to the following to export to excel quickly[url]...
However, the data that I'm exporting is rather large and I find it unnecessary to grab a dataset from the sproc, convert it to a multidimensional array of objects and then export to Excel. There are two main reasons this is unnecessary. 1) It takes time to transfer that data from the dataset to the array. 2) There are then two instances of the data, one in the dataset and one in the array. Therefore, I would rather directly insert the sproc results into the array of objects and bypass the dataset altogether. I can't do this unless I know how many rows I'm getting back from the sproc in order to declare the array's size beforehand. [code]...
I need help in defining an Multi-dimensional array which will update based on the value passed by the user [code] I nesd to pass the value to an array of where I want to add Project, for example If i want to add (Project) under Customer2 table the array gets updated and adds an entry in Customer 2 table which will look like [code]
View 3 RepliesI 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 />
I want to create a 2-dimensional Array for a List of five Names for males and another List of five Names for females.
And I want the list of names of males and that of females in a Text Box / List Box. This I couldn't do.
I know how to do this for a 1-Dimensional Array.
I give below what I tried.
Public
Class
Form1
[Code].....
I'm a beginner at programming so I'm going through the Clearly Visual Basic 2008 book. There is a problem that I'm doing called JM Sales Solution and I need to create a one dimensional array with the information given.
JM Sales employs 8 salespeople. The sales manager wants an application that allows him to enter a bonus rate. The application should use the rate, along with the 8 salespeople, in an array, to calculate each salesperson's bonus amount. The application should display each salesperson's number (1 through 8) and bonus amount. as well as the total bonus paid, in the interface.
I did the interface that's not a problem. My problem is the Create Report code. I had the program running and displaying but it didn't display all eight bonuses or the Bonus and Total Bonus paid at the end. I did some tweaking and now I can't even get it to run again. This is the code I'm currently on
[Code]...
I need to create a questionnaire with ten questions. The questions can be hard coded as labels. I will have a radio group box for each question, with options, Always, Usually, Sometimes, Seldom and Never. I will then need to store these values for each time that the questionnaire is answered, and another button that will show the question number and the answer count for each question up to that point in time e.g. [Code] I am also assuming I will have a button that when clicked, will identify the active radio button and add 1 to a counter? [Code]
View 13 RepliesI want to create a user defined data structure, which will be a 2 dimensional array such that each individual square of this 2-dimensional array will also store the score and the grades. ( Iam using VB.NET) More details:
for example: There is an 2 dimensional array with 3 columns and 2 rows, I want to fill each of the
(0,0);(0,1);(0,2) with their own score (Integer type) and grades (String Type).
And this is same for the rest of the squares i.e. (1,0);(1,1);(1,2) and (2,0);(2,1);(2,2)
After creating such custom data structure: "CustomArray", I should be able to create the instance of this custom data structure (which will be a class) and code something like this:
Dim objCustomArray as CustomArray
objCustomArray = New CustomArray
for i as Integer =0 to 3
[code]....
I need to build an interface that allows the user to select a horse from a list. The horses are as follows: horse1, horse2, horse3 and horse4. The application should display the way the horse places with a 1 means the horse won, 2 indicates second place , 3 indicates third and 0 indicates the horse did not place. Application needs to display a summary of each horse's individual performance as well as the performances of the other horses. Table for keeping track of each horse is as follows:
5 races-how each placed
1 2 3 4 5
horse1 0 1 0 3 2
[Code]....
I want to create a user defined data structure, which will be a 2 dimensional array such that each individual square of this 2-dimensional array will also store the score and the grades. ( Iam using VB.NET)
More details: for example: There is an 2 dimensional array with 3 columns and 2 rows, I want to fill each of the
[Code]...
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?
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]......
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.
View 5 Repliesis it possible to sort Multi-dimensional Arrays? If the answer is yes could someone help me giving some hints on how to start?
View 6 RepliesI have a string, which can easily be splitted by seperators into an array.The output has to be splitted again an move into a multi-dimensional array (2nd index)[code]
View 2 Replies