VS 2008 Arrays And Strings?
Apr 27, 2009
I have been summoned with the task of taking a tab delimited file and converting that file so it can be read by a third-party program. I am trying to think of the best way to do this, but I am having a hard time. Here is a view of the raw data that must be altered:
fkstoreidHeaderMarkB1RegNodateofbusinessNoRegEntriesTipsOverRingsVoids$Voids#NetSalesDP1_2GuestsDP3GuestsDP4GuestsDetailMarkfkdaypartidRecTypeGLB2Sales
1061HNULL101/01/2008NULLNULLNULL113.263512785.4714453137D2041005NULL2220.25
1061HNULL101/01/2008NULLNULLNULL113.263512785.4714453137D3041005NULL9170.19
1061HNULL101/01/2008NULLNULLNULL113.263512785.4714453137D4041005NULL670.75
[Code]...
I am toiling with the best way of doing this. So far, I am not having much luck. I have used arrays quite successfully in Java, but I am not sure that this is the best way to go here. I would have to get how many lines there are and read each line. Make the changes, and then go on to the next line. I think scanning the document line by line using a loop is the best way. However, I am not sure.
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Oct 29, 2009
I have two strings arrays
Dim sir1() As String = "m1-m2","m1-m3"
Dim sir2() As String = "1-0","0-0"
What I want is this output:
m1-m2 1-0
m1-m3 0-0
Which is the fast method to concatenate them?
I tried
Dim sir3() As String
sir3=sir1&sir2 but with no result
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Mar 20, 2009
I have two strings arrays
Dim sir1() As String = "m1-m2","m1-m3"
Dim sir2() As String = "1-0","0-0"
[code].....
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Jan 27, 2009
I was wondering if, perhaps, someone could help me understand why the following code gives me a garbled result? Instead of displaying as it should I get '.Net 2.0 Application Development Foundation Framework Microsoft'.[code]
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Oct 6, 2008
I am in need of encrypting a byte array, but my encryption method that I found strictly deals with strings.
Here are the two pieces of code that I am dealing with.:
The byte array (the bytes that need to be sent encrypted)
Code:
Dim outStream As Byte() = System.Text.Encoding.ASCII.GetBytes(TextBox2.Text + "$")
serverStream.Write(outStream, 0, outStream.Length)
serverStream.Flush()
[Code]....
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May 17, 2012
I'm making a random sentence generator that takes subjects, predicates, etc. from user input, stores them, and then randomly chooses one value from each category and prints it in a textbox. Or at least, that's how it's supposed to work. But I just can't seem to get the text to print in the textbox. Everything compiles fine, but when I click generate, Windows gives an error.
Since I have barely any time, for it is a project at an enrichment course that ends in 2 days, I've been trying everything I could without taking too long.[code]...
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Apr 7, 2010
The problem I'm having is I'm not sure how to go about getting the correct ones into the correct arrays. The data is scattered throughout the file. They are not on the same line and some are multiple on a line as well as blank lines, however they are in pairs. As they are not separated by commas or just white space is there a way to load the first string to the first array and every other string to the second array
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May 5, 2012
I was getting weird results when doing multiple splits on a string, so I decided to make a simple test to figure out what was going ontestString "1234567891011121314151617181920"If I wanted to get whats between 10 to 20 in Javascript I would do this:var results = testString.split("10")[1].split("20")[0]Which would return 111213141516171819However when I do this in VB I get 111Split(testString,"10")(1).Split("20")(0)It seems the 2nd split is only recognizing the first character no matter what I put.
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Jun 3, 2012
I'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.
[Code]...
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Jan 8, 2009
i've to declare two constant arrays one bidemensional of strings the other bidimensional of Doubles?
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Oct 30, 2010
the 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"
[code]....
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Aug 13, 2009
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
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Oct 16, 2009
I'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
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Oct 16, 2009
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
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May 9, 2010
In 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 ?
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Dec 10, 2009
My 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
[CODE]...
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Feb 2, 2010
I 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
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Mar 14, 2010
I would be more that happy for someone to tell me I am missing something very simple here I am writing code that - amongst other things - talks to code on other servers using the tcpclient function in .net
What I want to do is - in essense very simply. I want to define a structure which includes an array load it with data and sent it to the other end of the socket.
[Code]...
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Nov 17, 2009
I am having trouble figuring out how to use arrays effectively. I am trying to use them to store a data from text boxes and and then retrieve the data that's been stored.
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Nov 6, 2009
I have a 2 dimensional array. Im trying to use it to generate a maze via some algorithms. Its pretty much way over my head though.But thats beside the point. If i need each array coordinate to store multiple values (like if south, west, north, east has walls), what would be a clever way to do so?
For instance:1, 1 in the array needs to keep track of 4 values at least (as do all other positions).
Should i make it an integer value like "1111" and replace with 0's where the wall is gone? the first 1 being north, second being east e.t.c. Would you choose this option?If someone wants to do a bit more research, here is some info on mazes:[URL]..
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Apr 17, 2010
i have ReceivingArray(100, 1) and Function(1), what i want to do is ReceivingArray(x, ) = Function(1) so that goes here^-----------this but i cant figure out how to do that
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Jun 17, 2011
I am getting records in my dataTable that have nullvalues and need to pass each of those through a function that gets the missing value. In this case my records are address's that are missing the "Latitude" and or "Longitude" Field
I need to be able to retrieve the values and place them in the missing column and row
Nulladdress
Public Function GetNullAddress() As Address()
Dim Addresss = (From row In dtsold.AsEnumerable() _
Where row.IsNull("Latitude") OrElse row.IsNull("Longitude") _
[Code]...
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Apr 26, 2011
I'm working on a program for a class of mine but the ideas of arrays from a textfile just doesn't seem to click.
When the program loads, it should display the title of 17 books from the textfile.After, the user should be able to click a book title in the ListBox then click Compute Inventory to display the information below, which should be obtained from the textfile.
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Feb 21, 2010
I have been given an assignment which is to program a working payroll system in Visual Basic 2008.I have done most of it but I am stuck at the arrays.I would like my system to store all the staff name that the user adds on the system into a single Array for example in EmployeeNames(50). For example if the user enters a new staff in the textbox name and confirms it by clicking on a button, I would like that staff name to be stored into my Array EmployeeNames(50).
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Jul 3, 2009
I'm trying to combine two arrays. Simply append 1 array to another. I have two string arrays. Lets just say array1 and array2.would the following be correct?
array1.Copy(array1, array2, UBound(array1)) I guess I'm slightly confused about the parameters. When I try to use the above code I get green squigglies with the following error.Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated.
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Aug 14, 2011
Say you have a Combo Box with a List of Months in it.When a Month is Selected, the number of days in the Month is displayed in a nearby Text Box.
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Jan 28, 2010
working with arrays is not something I am too good at,Currently I have a form with 2 text boxes and a single button. I have two arrays, one populated with user names, the other populated with password. The user names and passwords match up in position in each array. I am thinking I might need to create a multidementional array of these two arrays.
[Code]...
If I do this however, any user name gets matched to any password, pending both exist. I would like to be able to compare the user name and password of a single user. Right now the user names and passwords are stored in separate arrays. Should I merge the two into a single array? If so how? And if so how do I go about matching the text box entries to the array(s) and making sure that the user name and password matches?
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Jul 28, 2011
I am working on arrays but i need to do a sql update statement. Contents of the array are also part a primary key in my table.How do I do an update using the array for example if my array is room names and my other table values are start date, end date and campus ID.
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Aug 2, 2009
I'm wondering what the proper way to remove an item from an array is. The way i am doing it at the moment is:MyArray(0) = NothingIs this the best way to do it as i'm having problems with my programme and i think it may be something to do with this
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Jun 11, 2010
I am having some major problems with byte arrays. First off the bigger array I have the more values go missing, I originally wanted to make a huge array and just dump like a 100mb chunk of memory in it but when I did that every byte in the array returned 0. So I experimented a bit and found 4kb to be the biggest chunk size to reliably not return 0.. ok I figured I'll just loop the 4kb and glue them back together later but no such luck, after being combined into the main array the bigger the number gets the more values that should be there just aren't.
Here's a code sample:
Dim retval(4095) As Byte
Dim combval(RLen) As Byte
For i = 0 To RLen - 4095 Step 4096
ReadProcessMemory(ProcAccess, i, retval, 4096, 0)
retval.CopyTo(combval, i)
Next i
WriteLine(combval(321603964))
WriteLine(ReadMemory(321603964, 1)(0))
So with the last 2 lines if I pull up some smaller number like 8 digits or so it reports back no problem but anything slightly bigger like the number i have written in there right now is just 0. After some additional research I discovered that the reason why 4kb is the max size I can reliably get is coz that's the size memory chunks are made of, "page" as they call it. Why the memory reading drops off at higher addresses alltho I suspect it has something to do with the way memory is structured and I am just not hitting the startpoint of a page anymore due to an offset or something somewhere.
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