I'm trying to create a program which reads a text file into an array.
[Code]...
But that's just silly so how can I fix this? Lines isn't being assigned a null value it's being assigned the first line of text in the file which has text in it so I'm confused.
I need to create an application that reads numbers from a file. it then should display the total of the numbers, display the average of the numbers, display the highest number in the file and display the lowest number in the file. We are using visual basic 2008. I am new to this and stuck . How do I begin. I included the number set that we are supposed to read from.
Attached File(s) NumberSet.txt (990bytes)Number of downloads: 80
I am trying to write a basic .net program that reads from one file with streamreader, scans each line for specific errors in formating and if the errors exist correct them in an output to another file that I've just renamed as same file name.cache.
View 2 RepliesIm trying to use a Settings file that the program opens and reads the info from when it loads BUT when the user chooses a custom color (ex: ff5f67d6) How can i assign the form background color to that color code?
Dim BgColor As Color = ColorTranslator.FromHtml(Settings(0))
Me.BackColor = BgColor
Settings(0) = the color code
that is the code i tried to use that doesn't work
I have to make a program that reads a txt file after reading it, show it in a richtext box and in another tab make the average of the grades the input received sort it by the student id and then in the same rtb sort it by the average of their grades, and finally save it on a new text file.
The text file input is something like this
12 3 10.0 6.9 7.3
19 2 6.7 9.3
10 3 4.5 9.3 4.5
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As you noticed in the input the first number is the student ID, the second number is the number of tests made by the student, and the other 3 numbers are grades, in the output the first number is the student ID, the second number is the average of the tests, and the other 3 numbers are grades, I don't have a problem opening and saving a text file and neither creating a tab with 2 RTB , my problem is how do I tokenize or read the input line by line, i guess that i need to use the split function but I don't know how to implement it into the program.
I am making a program that reads a file. Csv,and information to a textbox.
After he demand on the Csv file, the same information he writes what is in the same row forward in the same textbox.
A-dos-Francos;39.346246,-9.031105
A-dos-Negros No;39.366089,-9.090929
A-dos-Negros PV;39.366886,-9.131098
[CODE]...
Example: If "A-dos-Francos" is written in the textbox I want that it be replaced by "39.346246,-9.031105"
But in the same textbox.
Hi, I'm working on a program that reads text entered into a textbox and creates a list of items by separating entries by commas. Everything is working fine, except, because I am using an array to store the items in the list, I have a limited number of entries. This is only a problem because, as it is written currently, each comma counts as an individual entry. Therefore, users can enter ",,," for example, and it would use up 3 places in the array.
I'm looking for a way to check to make sure there is text after the comma before adding an entry. I've attempted to use the .substring command to check the character after, which works until it gets to the last character. Because there is no character after that, it will give an error.
Here is my code for extra clarity:
Public Class frmMain
Dim intCounter As Integer 'Stores the # of commas in the string
Dim Messages(49) As MessageProperties
[code]...
I am creating a VB.NET application that uses multiple lines of a text files as an array member. I came up with this code to create the array:
Dim PSArray as string = Split(my.computer.Filesystem.readalltext ("E:PS.txt") )
Now that I have created the array, I need to know how I could make each line of the text file an array member.
Im trying to come up with a do while statement that reads through a text file till the end while pulling out 3 different matched items, then writing those matched items to ascending spots in an excel file, and then creating a bar graph according to the saved data. Sounds complicated but...I have the program reading the text file, pulling out the first iteration of all three, writing them to an excel file, and I have it even graphing them the way I want it to. The only thing I havent done before (and which is probably the easiest), is creating the do while statement so it keeps searching line to line for the three interactions of what im looking for and writing them to ascending spots in the excel file.
Right now my code works like this, which is perfect for pulling out the first 3 and creating a graph, I just inserting a do while and a rowindex + 1 variable.
vb Dim alines() = System.IO.File.ReadAllLines("C:deviceinfo.txt")
Dim amatch As String
Dim muvalue As String
[CODE]................
I have a feeling in order to pull this off, I do not want to use the, "ReadAllLines" option and possibly want to put the text into an array.
And do something like: if lines.count > 0
But im not familiar with how arrays work in VB, and more specifically what the syntax is. The other tricky thing I am trying to add is an if statement that adds to a variable (such as i) everytime a line is added to excel so the program will write to ascending lines. I was trying to have the it work with the do while statement but pretty soon realized that if I did: i = i +1. Everytime it went through the loop then the data was going to be on random lines corresponding to their place in the text.
I have a text file like[code]...
I need to read this into a 2d array of integers.I already have the code to read the file[code]...
I am trying to create a textfile if it doesn't exist or append text to it if exists in vb.net.
For some reason, though it is creating the text file I am getting error saying process cannot access file.
And when I run the program it is writing text but how can I make it write in new line.
Dim strFile As String = "C:ErrorLog_" & DateTime.Today.ToString("dd-MMM-yyyy") & ".txt"[code]...
I make an application and make setup file using VS setup project. This work fine and create default text files into Program Files Folder for winodw 7/vista .but can not modify these files or create any new files.There are few text files need to create ,modify during application running ,but in windows 7/vista unable to create,modify files.I am using full default admin right for these OS. If iuse C: root path then application work fine or for win XP no problem.I think UAC restricting to perform these opeartion. But i do not know how to change these restriction using vb.net, whenever application start.
View 5 RepliesI make an application and make setup file using VS setup project. This work fine and create default text files into Program Files Folder for winodw 7/vista .but can not modify these files or create any new files.
There are few text files need to create ,modify during application running ,but in windows 7/vista unable to create,modify files.I am using full default admin right for these OS. If iuse C: root path then application work fine or for win XP no problem.I think UAC restricting to perform these opeartion. But i do not know how to change these restriction using vb.net, whenever application start.
I found one solution that , if change user rights manually then this problem solved.Follow these step to change your account settings.Control Panel-->User Accounts and Family Safety-->User Accounts-->Change User Account Control settings-->Never notify(Set tab to never notify).After this change need to restart system.Now can make all changes like windows XP into Windows 7.can also make changes into program files.
Its working fine, but need to make these changes manually in OS.but its not efficent solution. So if any one knows how can make these changes by coding that will nice.
Im learning Visual Basic 2010 on my programming class and we reached the part of file handling. Here i tried to make a simple program that can create a text file with the content of what i type on the textbox, basically i create the file if it doesn't exist, and if it already exists i append the content to it. Once the file is saved i can read it using the "Open" button. Unfortunataly, whenever i try to create the file, the compiler gives me an error saying that it cannot modify a closed file, although i've followed up the execution instruction by instruction and i can't find the error.
Imports System.IO
Public Class Form1
Dim body As String
[code]....
I have a hardware which sends out packets containing 17 bytes to the comport in bursts of 3. the little test VB that I have written receives and displays the bytes in a line of 17 bytes long and works fine until it gets to around 170th packet, then it starts to mix up (looks like shifting the data left) the bytes shift mostly by one digit sometimes by two. then it will continue to give almost a packet correct and a packet shifted for about 50 packets. Then it will correct itself for a long while, but then the speed at which it receives drops. All the packets are sent 3 times, and before things go wrong (within the first 170 packets) the packet counter shows that it receives 3 packet each time but after the problem it goes to 2 packet per burst and then to one.
If i close my VB monitoring program say at packet 165 and immediately open it again, it wont go wrong for another 170 packets, this points the finger at VB. I have check my hardware, there is no problem with that.The program reads port - waits for 17 bytes - once 17 has been received it will go and buffer the packet in an array. In fact they are 2 arrays but printing fro either results in the same problem.I have tried whatever i could think of but to no avail, i am wondering if some kind of house keeping needs to be done to clear something... I am sorry the program is a bit messy but I have been making many changes to find out what the problem is - my code below:[code]
i have to create something that uses OpenFileDialog, and reads textfiles that i created it.
i did this
Private Sub SK_btn_OpenFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SK_btn_OpenFile.Click
SK_OpenFileDialog1.ShowDialog()
End Sub
I know how to read the File name, but i want to post the texts that are in the TextFile in my textbox when i press Open/Display file.
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SK_OpenFileDialog1.FileOk
Im wondering how would i work with a text file. which would allow me to Read the next Record, Cut record out of the program.
View 15 Replieshow to make a program that reads the url of ie or Firefox.. really Want to make a program like this ..
View 7 RepliesI want to create a login system that reads the usernames and passwords for a list of arrays:[code]I have managed to code the program so it accepts the correct username and password and sends a error message when they don't match. The problem I'm having is when the user enters a username that isn't on my Username list. The program always crashes when I enter say "admin1000".[code]
View 3 RepliesPossible Duplicate:VB.Net Initialising an array on the fly
This maybe a stupid question, but its got me exasperated. How do I declare a new array inline? Is this possible? I've tried all of the following and they all don't work.[code]...
How to create this JSON array using vb.net array [code]...
View 1 RepliesI have 2 arrays one is a and second is b. how do i compare each of them and insert to new array c?[code]...
View 10 RepliesI have two arrays
a={a,b,c,d}
b={1,2,3,4}
now I want to create a 3rd array which should at least contains one numeric number and rest of alphabets, this code will generate unique usernames so it should not repeat the pattern of selection which is present in main array[code]...
I have a Comma Separated value file in .txt format... simply put, its a bunch of data delimited by commas and text qualifier is separated with ""For example:
"So and so","1234","Blah Blah", "Foo","Bar","","","",""
"foofoo","barbar","etc.."
Where ever there is a carriage return it signifies a new row and every comma separates a new column from another.My next step is to go into VB.net and create an array using these values and having the commas serve as the delimeter and somehow making the array into a table where the text files' format matches the array After that array has been created, I need to select only certain parts of that array and store the value into a variable for later use.... how to make the array and selecting the certain info out of it..
im trying to make an example program for a teacher friend of mine
Springfield
Toledo
Youngstown
[Code]....
thats just what i have so far but im really having trouble getting the other part into a 2d array. i want the second half to look like this when done: the oppsite of what it looks like in the file.
001
359
203948
I am writing an app that reads from the com port, filters the data, then writes to the text box, then immediately starts over. This all takes place in an endless " do while" loop within the "start" button code. I also have a end button too which closes the com port and ends the program. Some other buttons are present also to change the filter settings.Problem is when I click start, data is logged, but none of the other buttons work. Also some of the text boxes are "see through" and dont look like thy have updated with the rest of the form.
View 9 RepliesI am working on a project that involes reading an Excel file, picking through it, then creating a flat CSV file. One of the the data elements I am picking up is a 9 character string that may be numeric, or contain one or more alpha chatacters. Excel has a nasty habit of converting long numerics to scientific notaion. I can overcome this by converting the "general" string to "TEXT".
However, there is one instance where I can not get the function to work...the string is "90333E108" ( the CUSIP for USU). Regardless, the text string is saved properly into the CSV file. When opened in a text editor, it reads correctly.
When opened with Excel, it is in scientific notation. Changing the field to "text" from "scientific" still displays "9.03E+112".
how to create an csv file that Excel will open and read correctly?
You can test this by creating an Excel workbook, format all cells as TEXT and add the following data:
90333E108
123
2
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im makign a game that reads text files off of an ftp server. everything is working great. except for the fact that i cant read more then the first line of the players text file. how would i use substring to, for example, look for 'inventory' and get all the info under 'inventory' and above the next title?
View 4 RepliesI have a piece of code that reads in lines of tabbed text. It is a game of who wants to be a millionaire. What I would like to do is get the game to incorporate random questioning.
The format of the text file is as follows:
Which record company did the Beatles create? (tab)Apple Records (tab)Sony (tab)BMG (tab)LiteFM (tab)Apple Records (tab) Which has the highest mountain? (tab)Mars (tab)Ireland (tab)Iceland (tab)America (tab)Mars(tab) With a set amount of lines. I want the program to choose each question randomly and not to repeat the question. I'm not sure how to incorporate it into the code.
Quote:
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Trying to create a program that accepts a square array size 4 by 4. Then it should print the totals of the rows and columns. I started with a form and made text boxes and created a print button. I made it so that numbers can be input into the boxes. When hitting the print button, it should print the totals of what was input, however, it isn't doing that. Is there a different way to write the array code so that it will print it? Should i not have text boxes but rather have labels with fixed numbers set in them?
View 11 Replies