Im using VB express 2008 and I need help creating a 2-dimensional array (6,7) and populate it with some info located in a txt file.The txt file contains a list of customers and transactions, so the info is alphanumeric.How should I organize the data in the txt file?What is the loop that I need to read the file and populate the array in an organized way?
View 5 Repliescreating a 2-dimensional array (6,7) and populate it with some info located in a txt file.The txt file contains a list of customers and transactions, so the info is alphanumeric.
How should I organize the data in the txt file? What is the loop that I need to read the file and populate the array in an organized way?
I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
I'm currently developing an editor for an AFL management sim.I want to be able to load three or four multidimensional arrays to the program, then save them to the same file. I tried the tutorial on here but got completely muddled up. Why can't it be easy like in VB6 When it was like 10 lines of code tops!
View 5 RepliesI am trying to create a log file which I am going to use to populate some controls (DataGridView or Treeview). I am trying to figure out if should use text files or XML files to do so. Effectively the log will highlight multiple phases in a client-side app. The log will be written to at various phases when the project is running. The user will always have the options move on to the next phase or save progress and exit the project. As such, I want the log file to highlight how far the user has progressed throught the various phases AND I want the log to highlight varous information from each phase. Whenever the user starts the project, they will be given the option to load existing log files. So the project will have to read these log files and append them where necessary as the user progresses.
I am not sure what the best way to do this is and below is a rudimentary approach using text files. As you can see, the top of the file would have a summary of all the phases and whether or not the user completed each phase. Next each phase would have a data section highlighting what data was stored along the way. I have used a ":" to denote each section. Then within each section I would obviously need to use a delimeter for all my data. So if Phase1 = True, then I would load all the pertinent data from "Phase1:" into the desired control. Can anyone provide an efficient way of doing this and provide some insight as to whether I should use XML instead. The phases my change during development and I am not sure yet which controls I will be using. Does XML provide more flexibility.
In summary I am looking to create, read/write and append log files and populate controls with the data in varous sections of the log file. Example:
Phase1 = True
Phase2 = True
Phase3 = False
Phase4 = False
[code]....
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 ?
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]...
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
View 1 Repliesthe 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]....
how I would save the contents of several comboboxes (that will have several records added at a time) to a txt file. I would use an array, but I don't how this is done when one doesn't know how the total number of records to be saved. Would I use a loop? Haven't really dealt with anything yet that has unlimited number of entries.
View 4 RepliesI am trying to make this program that reads prices from a file and calculates the total for a certain amount of days and the total for all twelve days. It is for the 12 days o christmmas. The user selects which day(1-12) and the program calculates the total cost for that day and then the total cost for all 12 days. I need to make two separate arrays, one array to hold the twelve items and a second array to hold the twelve corresponding costs. The data needs to be read into the program one time. The arrays should be used to generate all output and calculate the costs. I have gotten the program working perfect, but I cant get it so the program only reads the txt file once.
[Code]...
im a newbie here, im taking intro to programming wth VB in college and im having problem with the homework here's what im supposed to do
[Code]...
trying to save users names and passwords from input boxes and save it as arrays in text file that in future multiple users will log in with their names and passwords
have this code so far but doesnt realy save the user info to file, dont even create file.
Imports System.IO
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
arrays saving to file that if new user account is added name and email address is saved. if in the future multiple users login in whe name and email address will match correct users.
here is what i got so far....
Public Class Form1
Public strName, strSurname, strEmail, strPassword As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code].....
lads, I'm having problems with saving user input to text file. Need use the streamWritter to write users names and passwords to text file I gues the arrays would work out but the code is mess and I'm stock with this:
[code]
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim file As System.IO.StreamWriter
[Code].....
I need to load a CSV file into a set of arrays, and show the output into a listbox, which are associated with other textboxes(labels). earlier i had the names all loading into the listbox, but the values in the label were only correct for the last line in the csv file, not corresponding correctly to the listbox values.
Here's my current
Option Explicit On
Option Strict On
Imports System.IO
Public Class frmMain
Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
And here are the contents of my csv file:
Randy,Johnson,100,95,80,85
Martin,Lin,90,90,90,90
Tony,Nowakowski,100,100,100,100 .....
I'm trying to solve a problem I'm having with writing in a text file using 2 arraysthe first array is the normal text, line by line.g.
dim arrCode as string()
arrcode(0) = "This is the first line"
arrcode(1) = "The second line etc."
[code].....
So I'm in the final stages of finishing a program I've been working on for nearly a year now, and this is basically my final hurdle. The Save dialogue is working beautifully, with 'flags' in order to switch it over from the regular input into text boxes to the Listbox input protocol.
However, I'm having a *** of a time getting it to take lines from the text file and put them in the proper text box. Here is an example file:
Quote:
SHOWNAME
CALLNAME
BREED
[Code]....
So with the sample file I provided above, in the textbox named callNameText would appear "SHOWNAME", and so on and so forth. With this build, I get a NullReferenceException on the "Me.Controls(strboxNames(i)).Text() = strAllText(ati)" line.
I am trying to store 8 separate pieces of information in a text file (like a database) [but not a SQL database], consisting of integers and strings. How would I use an array to do this? Will an array collect data from text boxes (I also want to display the 8 pieces of information in separate boxes). also how would I save the text file so I can open it again or open a different text file (database?), from within the program?
EDIT: I see I need to use readline and writeline to read/write from a text file but how would I find specific data to show in my boxes?
I am working on a program that opens a .txt file, finds the length of each line in the file, and then outputs the minimum and maximum lengths. For example, assuming this is the .txt file I am opening:
2789304
293048203
27598493
[code].....
I would like to return something like this:
Minimum length: 6
Maximum length: 9
I cannot use arrays for this assignment. I figured out how to get the maximum length but cannot figure out how to get the minimum. Am I going about this the right way or is there an easier way to do this? Here is what I have thus far:
Dim FileName As String
Dim FileReader As StreamReader
Dim FileLine As String
[code].....
I have a data in the below format
number = 4
length = 7
force = 100
Now I want to read it in a format that it will check the string 'number' or 'length' or 'force' or whatever and stores this data into specified arrays or listboxes. Like a force() array or listboxforce.items()
how to take a text file that was provided for my homework assignment, and put the information within it into 3 different arrays.[code]
View 2 Repliesi'm having issues where I can't figure out how to take a text file that was provided for my homework assignment, and put the information within it into 3 different arrays.The .txt file looks like so:tc.Amanda/Ashley have to be in the same array as well as 4/2, 166/20.This is what I've come up with for the snippet of code, and so far, it hasn't really been working right.
Dim namearray(MaxItems), rankarray1990(MaxItems), rankarray2009(MaxItems) As String
Dim Numitems As Integer
Dim sr As System.IO.StreamReader
[code].....
I've been making a program whereby users names and numbers must be stored in external files. At the moment I can get the names to read and write to a file with these lines:
Imports System.IO
Public Class frmDefaultMenu
Private Sub frmDefaultMenu_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
Where each line has a name, a seaparator (,) and then the corresponding number.
When the program loads I would like it to be able to access that file, and store all the names into an array named ExistingUsers() and all the Numbers into an array called ExistingNumbers(), and then when a new name is added in the textbox, it is assigned the number "100" and placed at the end of the array, then when the application quits OR straight away, the external files are updated.
I have been trying to find out how to do this for days now, so I am finally asking how. I am newish to programming. Here is my problem.
I am trying to extract x,y,z coordinates from a text file arranged as such:
x,y,z
x,y,z
x,y,z
etc.
I need to be able to extract the x column into an array, the y into an array, and the z into an array. I learned how to pull it into a string, and how to split for every line, but i don't know how to split after each comma and separate them.
My xml files were looking a bit clumsy when i read them, what i have done now is to save them in the xml in this format:
vb.net <field>{value1|its partner value2}</field>
i noticed {|} this is the format that vb.net uses for arrays, i was wondering if that's an ok way to store things, on retrieval once i get the node value, what would be the best way to break up the {value1|it's partner value2} variables to use, explode the | and get parts (0) and (1)?
reading words from a text file and displaying them at random.The format of the text file is....
verb
noun
answer1
[code]......
im writing the contents of a few arrays to a file using StreamWriter, and am having issues with the syntax of the format function. Tried reading through the help files to no avail, can anyone possibly explain the syntax to me?
View 2 RepliesI can understand since .ini files are pretty outdated, but I'll explain. I have a combo box, and inside the combobox I want it to display the names in a section of the .ini file. So say my .ini file contains the following:
[SECTION1]
Name = Billy
Lastname = Bob
Inside the combobox I wan't it to display the items "Name ", and "Lastname " only, not the section or the values.
I'm using Visual Basic 2010 and i need to populate 1 combobox with a txt file.
View 1 Replies