VS 2008 Arrays Displaying States/searching Arrays?
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"
I have to make a program that uses 2 arrays, one with the states name and one with the capitals names. I have to make it to where it randomly selects a state and asks you what the capital is, and gives you 4 choices in the 4 radio buttons provided. My problem is getting one of the randomly selected answer choices to be the Correct answer.
Here is my code so far: Public Class USCapitals ' Declare module level variables. [Code] .....
First (and probably not the last) post. My Problem I would like to search an array for a certain text (this has been read in from a text file (42 lines) and split to an array of 11 splits successfully). I see all the data in the array with a msgbox or written to a textbox. So I know the info is in the array.
When the text (will be from a textbox eventually, but for now is a fixed string) is found, (this is (0)), I would like to put the other parts (2), (3) etc.....into strings of their own. Obviously when not found, the search should move to the next line. My problem is, that I can't get a search loop working and moving to the next line until the text is found, it sticks on the first line, even if wrong (which it is!).
Of course when the text is found, I can write (2), (3) etc to variables and exit the search.
I know this has probably just a simple solution, but I've only been learning vb for a week now and my head is spinning at this problem, I just can't get the syntax and order right.
i am working on a VB project for Chem and im making it for converting grams to moles, moles to molecules or any thing like that. and i have about 110 elements set up and working fine the way that im doing it but i have a feeling this is a horrible way and to abundant.
i have a textbox set up to if i type in the element He and hit enter it will find ChemElement(1)="He" and it calls "Sub DisplayElement(ByVal number As Decimal, ByRef label2 As Label)"
Which then displays the Chemical mass into a Label.
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 ?
I am having no trouble displaying when the word is in the arrays, but I can't seem to make it display in a MsgBox that the word isn't in the database...Just get the error that the key is not in the dictionary..
Private Sub btntranslate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btntranslate.Click Dim x As String x = txtentry.Text
Dim englishwords(12) As String englishwords(0) = "I" englishwords(1) = "me" englishwords(2) = "my"
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
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
I am having some trouble with some data I want to display on a form. The data is in a 2-D array, call it myarray(x,y). My attempts to display it have so far not worked. Similarly, I also need to read this data from the form back into an array for further calculations.
I am working on a program that will display the number of storms in a specified year. This program uses a text file with years 1990-2010 and the number of storms for each year.
txt file: Year 2010 6 Year 2009 3 Year 2008 8 Year 2007 15 Year 2006 10 .....
A user selects a year from a ComboBox (cboYear) and the program displays the number of storms using a label object (lblNumberOfStroms) for that year. The user then can click a button (btnDisplayStatistics) and the program will display using a label object, the number of storms for that year. This seems like a simple application but I am having trouble grasping the use of arrays concept.
I 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.
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.
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.
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]..
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
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") _
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:
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.
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.
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).
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.
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?
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.
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
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.
