VS 2005 Read Numbers From .txt File Into An Array?
Jan 16, 2011Basically what I want to do is open a .txt file that contains numbers and then read the numbers into an array and sort them highest to lowest but I don't know how.
View 3 RepliesBasically what I want to do is open a .txt file that contains numbers and then read the numbers into an array and sort them highest to lowest but I don't know how.
View 3 RepliesI know how to read user input using textbox but it only can read character and numbers. Is it possible that I want to read user input equation?
Example:
User type A+B
User put range of A and B.
1.25<A< 3.56
2.45<B< 9.87
I failed to read the equation using textbox. Is it there are other ways that can use to read equation input A+B?I am using VS2005 and VB.Net. I really new in this programming using VB.Net.
I have created a program that saves the co-ordinates of the users mouse and saves it to a text file to be used as an auto clicker.
View 2 RepliesI generated 10 random numbers and put it in array V0(9) but I have problem to display the array numbers in listbox.
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I got a text file, which looks like this[code]...
View 8 RepliesCan I save an array into my .bin file then read the array again just like a string or Integer??
View 2 Repliesim 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
Is there a correct way of doing this in vb.net? I want to read a file as a set of numbers such as long integers ,say the file contains the string "Hello World - Its a beautiful day blah blah blah" This would read as a set of long integers that are 4 bytes long
ie ascii (hex)
48 65 6C 6C 6F 20 57 6F
H e l l o W o
etc and that would also be an 4 byte word represented as a number 1819043144 thus stepping through the file 4 bytes at a time. Instead of reading and looking for certain words in the file I would look for certain numbers, thus eliminating read errors in certain file types. I coded this type of thing in vb6 before , this would be done with the 'get' method and a file pointer. I have managed to read it a byte at a time with this code but I am unsure where to go with it as the 'get' method isn't in vb.net
Imports System.IO
Imports System.Text
Public Class Form1
[Code].......
i\m trying to do an application that read a text file that contains 2 columns of numbers and put it in 2 columns in a table
View 6 RepliesI have a text file to read. I need to read one part of the text file and get the specific number than match that number with another part of the text file but same text file. Now i can read one part and get the number. this is the [code]....
So after i get the spesific text that i want to how can i match that value with other part of text file. I attach my text file here.For example the value that i want to find is[code]....I manage to find the first value but i dont know how to match
How do I read a raw byte array from any file, and write that byte array back into a new file?
View 3 RepliesI am trying to create a sort of 'personal code library' in visual studio 2010 where the form displays a list box of certain project files in vb that I have made in the past and when selected, a button can be pressed that launches the .exe files of those visual basic program project files or displays the source code (.vb file)
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i have a structure of;
name
age
gender
location
then i need to read in a file into an array on the structure above, and pretend this is the file which has 3 people
george
45
m
usa
[code]....
so basically i dont get how to read in a file then put it in the array in that structure then make it into a csv file?and whats the difference between streamreader and streamwriter?
I have been trying to research how to get a file (basically a csv file) from a url to an array and my search has come up with some examples, but not quite what I am looking for. Would appreciated any direction and or other examples of folks that have done this before.Basically we have a cloud computer set up (Hadoop) and the output of some of our processes is what I am trying to get to.[code]....
View 1 RepliesI have a function that reads a character array from a file, converts it to a byte array, then writes it to a Network Analyzer. The problem is the conversion takes forever as the size of the array is about 287,000.... Here is the code..
Code:
Dim objSR As New IO.StreamReader(strPath)
Dim charA As Array = objSR.ReadToEnd.ToCharArray
ReDim bytedata(UBound(charA))
[Code].....
I a very large text document, I need to read some lines and at the end of each line, insert a text from the header of each page to he preceding lines.I have the following code the reads the file and displays it on a list box.Public Class Dialogs..[code]
View 2 RepliesI'm trying to read a text file by use a array for an interactive map. In the text file I stored shop names such as:
Label2.Tag = "test"
Label3.Tag = "House"
When I hover over a label it will display the name in another label such as "lblShowName".
So far I have the array that reads the text file.
dim shopNames() as string = io.file.readalllines("fileName")
How can I convert a file to an integer array? I have been using this method but I'm hoping there is an easier way:
Dim StreamRead As New System.IO.StreamReader(FileName)
Dim file() As Integer
Dim loops As Integer = -1
[code].....
The file I need to read in is a square 8x8 or NxN. the chars are separated by spaces and at the end of the line I believe a crlf. When I try to read in the file i get the crlf's when i use this [Code]
View 1 RepliesIs there any special way of reading a pdf file into a byte array? The reason I ask...I want to fax a pdf file using faxDocument and FaxServer. My current code is working fine for everything else. Now I know that in the documention it says it should not work for pdf. But I can get some pdfs to send and some do not. When I fax a pdf through windows, it works. [code]....
View 5 RepliesI'm trying to read specific values from the text file (below)[code]...
How do I store only the data I require in the array? I've tried split and substring but cannot work out a usable method - I need on the text after the colon for each line.
[URL] ..to read a CSV file, so lets say I have a large file that looks like this:
[Code]....
How would I add the 10 and 11 together store it then say if that value is not greater than 23 then delete row 2.
Some binary files have application variables at the end if you open it with a text editor you can see these variables. Now when I read these files into the processor memory the program does not work properly, however if I read a file without this it works fine. So how can I read a byte[] array to EOF so that when I pass that byte array into win32 api create-process it will create the process without corrupting the program?
View 3 RepliesHow can I convert a file to an integer array?
Dim StreamRead As New System.IO.StreamReader(FileName)
Dim file() As Integer
Dim loops As Integer = -1
[code]....
I've never had to work with them before, and I think I've got everything down except one big thing: I'm setting it up so that different settings have different values depending on what file is being read. I need to know how to tell vb to take a specific item in an array and make the setting equal to it. I know how to make it read the file and add each new line into the array, just need to make sure I'll have to correct method to get the item in the array to match up the setting.
View 3 RepliesI'm looking for some code to write /read an array to a text file in vb6.i have an array of a fixed size, and i need to write that into a text file, then later in another program i need to access that text file and write every element to a new array of the same size.the elements will be integer values, but "Long" datatypes. there will be no strings or anything else, just whole numbers.
View 2 RepliesI have developed a vb.net dll (.net 3.5) which does the following :
- I have data of several stock market companies.
- They are stored in several folders under a main folder.
- These files are random access files.
- There can be around 4000 files in total for example.
I wrote a program which reads a current csv file and stores contents in array. Then I store name and path of companies in folders (which I was talking about). Then I match one company from csv (stored in array) to companies in user's folder (again reading from array). If found I insert data in the file (random access file). This whole process takes for eg. 2 min my system. A similar program was written years ago by someone in powerbasic which takes slight less time if run one but if run for multiple csv files it takes only a few seconds doing the same thing for other files. When I do the same thing (by writing code to .net dll) and making a dummy app to run it, no matter how many times I run it takes same time. And is way slower than the earlier one (PB) one I was talking about. But if I paste the same code in my win (.net) app and not use .net dll then it runs a bit faster.
I need to show status so if I pass my form's label reference to .net dll and it updates it does that slow down process a lot. As I mentioned I am trying to process the files and it takes longer in .net. What should I do to get best performance? Unfortunately due to unexplainable reasons I cannot change the format or use a db. The files which I am reading/writing (random access files) are use by other products so I have to stick to that format. What I am doing is storing the location of those files in array so that I don't have to search folder again. that is not taking time. But opening reading and writing files is time consuming if I am doing it for few thousand of them. A similar program in powerbasic (developed years ago) runs fast. Running code thru .net dll is slower than running it thru program. Why?
I'm trying to do is to read the lines from a text file, and transfer them to an array.[code]...
View 3 Replies�On load read data from units.txt into an array of structures;�Allow the user to choose a major and then add units to a study plan.Note your program must not allow the user to add units not in the major and a unit can only be added once to a study plan;�Save student first name & last name, student number, unit codes to a user selected file (e.g. fred.txt); �Allow the user to select a student file to load using a common dialog control ;�Display the units for that student.
The program must have the following features:�It must use a common dialog control for saving data;�The program must have at least one general procedure; �The program must demonstrate the use of an array (array of structures recommended).I've attached a copy of the text file needed to be loaded.
I have an image that has dimension of (100,100). I am using FileStream class. When I run the code I get EndOfStreamException error at line 44. I have pasted the for loop section of the code below.
For x = 0 To 99
For y = 0 To 99
byteRead1(x, y) = br1.ReadByte ' line 44 (exception thrown here)
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