Counting Columns In ASCII Text File To Enter Data Into An Array
Nov 21, 2009
I am using visual basic 2008 and trying to create an application to plot data from text files. I have several data files of various sizes. They have an unknown number of rows and either 2 or 4 columns.I need to put the data into 2 dimensional array, so value(,) becomes either value(lines,3) or value(lines,1) depending on the number of columns.My program needs to be able to count how many columns there are, and redim value(,) appropriately.I have written a piece of code to count the number of lines (rows) in the file using 'While not (EOF(1)) ....' but I'm stuck on how to count the number of columns.I could ask the user to indicate how many columns there are before the file is read, but I would prefer the program to detect the number automatically.
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Jul 28, 2010
I am writing a 2D array to a text file.Is it digital map data, so I write each row at a time, and the format is readable by my map application.I have pasted the code below. The array is called edgegridArray. Everything else is pretty obvious. I don't know if streamwriter is the best way to do things,
Dim swr As StreamWriter = New StreamWriter("D:edgeoutput.txt")
swr.WriteLine("ncols " & cols - 2)
swr.WriteLine("nrows " & rows - 1)
[code].....
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Jan 3, 2010
I'm reading a txt file into an array and then writing a new file one line at a time. The reason i'm using array is that i'm searching for a few lines that i want to find and replace.
However in my file I have some ascii characters but they aren't read well. I read something about System.Text.Encoding.Default but I don't know how to implement it in my code.
[code]...
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Jan 27, 2012
what would be the optimum code in VB2010 that check a file to determine:
1) is it a text file, and
2) if it is a text file, does it contain any non-ASCII characters
Note that LF, CR, and EOF would be expected, and should not be flagged. I can think of 3 - 4 ways to do it, but there may be a 'best' way in terms of simplicity and speed.
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Nov 20, 2009
So i am count after i find each string example when i find "ADT^A08" it counts how many found in the txt file and then it moves to the next file. My problem is that you can see totalA08 += 1 counts the amount. My problem is that it keeps its old value after each run so the first run counts 5000 and then the next count is 10000. When that last file was the same as the first only 5000. Any ideas on how to properly clear that value after its done [Code]
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Dec 2, 2009
Here's the data I'm trying to work with
Spark Plugs
column 1: PR214,PR223,PR224,PR246,PR247,PR248,PR324,PR326,PR444
Brands:
column 2: MR43T,R43,R43N,R46N,R46TS,R46TX,S46,SR46E,47L
column 3: RBL8,RJ6,RN4,RN8,RBL17Y,RBL12-6,J11,XEJ8,H12
column 4L 14K22,14K24,14K30,14K32,14K33,14K35,14K38,14K40,14K44
Here is what i came up with for my code so far
Public Class frmMain
Private strSpark() As String = {"PR214","PR223","PR224","PR246","PR247","PR248","PR324", "PR326","PR444"}
Private strBrands As String(,) = { { } }
End Class
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Jun 10, 2009
how to parse SQL Text with VB.NET?
Ex: I got a sql file "CREATE TABLE..." i want to get an array of columns and an array of data types.
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Oct 12, 2009
I have made an application in VB 6.0.In this application ,i am connecting one controller through serial port to laptop.I have used MSOMM control for this purpose.Controller is sending data as a string .On VB 6.0 applicaton in laptop ,i am getting data displayed in one text boxall in ASCII code/characters.Total chatacters in string are 61.My problem is this that all 61 characters are comming in one text box.I want thateach character should come in seperate text box so that i can be able to display them individually,i.e. 61 characters and 61 text boxes.
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Dec 23, 2010
I have a text file stored as a string variable. The text file is processed so that it only contains lowercase words and spaces. Now, say I have a static dictionary, which is just a list of specific words, and I want to count, from within the text file, the frequency of each word in the dictionary. For example:
Text file:
i love love vb development although i m a total newbie
Dictionary:
love, development, fire, stone
The output I'd like to see is something like the following, listing both the dictionary word and its count. If it makes coding simpler, it can also only list the dictionary word that appeared in the text.
WORD, COUNT
love, 2
development, 1
fire, 0
stone, 0
Using a regex (eg "w+") I can get all the word matches, but I have no clue how to get the counts that are also in the dictionary, so I'm stuck. Efficiency is crucial here since the dictionary is quite large (~100,000 words) and the text files are not small either (~200kb each).
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Oct 22, 2010
So I'm using a plain TextBox to display output from an ongoing background process. I've created a 'report string' that displays in my textbox like it has 3 columns; there's a VariableName, a VariableValue, and a VariableEffect (showing how applying that variable to the process affected it).In my textbox, any VariableValue entry that has 17 or greater characters gets 1 tabstop between Value and Effect; any entry 16 or less gets 2 tabstops, and any value 7 or less gets 3 tabstops which very neatly lines up the 3 columns.
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Jan 26, 2012
Simple question, what would be the optimum code in VB2010 to read in a text file and verify that:1) It is a text file, and2) There are no non-ASCII characters anywhereAnd conversely, we would want the code to provide a warning if the file is not a text file, or if the text file contains non-ASCII characters. [Note that LF, CR and EOF are expected to be in the text file, and should not be flagged as errors]
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Feb 27, 2009
I am developing an app that will import numeric data and export it to various text files using ascii templates. I am basically converting the template file into a single string, replacing application fields in the string with {0}, {1}, etc... and adding the result into an array that is then passed to the String.Format(str_Template, Params()) to provide the final output. I have set it up so the template will use the standard VB.Net formatting syntax.
A simple template example:
{<prt_Mark>:G} {<prt_Qty>:F2} {<prt_Length>:F2} {<prt_Remarks>:G}
[code].....
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Mar 16, 2012
This is my first time posting in a forum like this, so please excuse me if I accidentally break any thread rules (btw, where can i find these?). I am very new to Visual Basic and have been trying to teach myself as I create this program. I have experience with macros in excel so I do understand some of the coding, but definitely nowhere near being proficient. I am using Visual Basic 2008 Step by Step (Michael Halvorson) to teach myself.
I am trying to create some code in my program that will allow the user to open an excel file and then return the number of rows and columns in the worksheet. There will only be 1 worksheet in the workbook (since this is just a small part of a larger program I am writing). I already tested the code that will open the file in another program and it worked fine; the thing that is catching me is the row and column counts. I'm a bit stuck here and was hoping someone could point me in the right direction. Here is the code as follows: Code: I have another sub for a quit button which I chose to leave out. The last line for the MessageBox is causing me problems.
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Nov 16, 2009
I dont know how many times user want to enter data .i want to add a new row at the end of arrray everytime user enter the data.
Dim vNames(-1) As String
For vIndex = 0 To vNames.Length - 1
vNames(vIndex) = InputBox("Enter a Name")
[code]....
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Dec 19, 2009
i have a map .txt file that I made that contains X, Y coordinates, and an ID. I have been able to manipulate the .txt file just about every way possible except the way that I want to. I want to seperate the three columns at put each column into its own array. See the example below to understand what I am trying to do.
[Code]...
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Dec 15, 2009
I have a csv text file, shown below that I want to edit based on user inputs. When the user wants to change the current price of a stock, they enter the stock name, and the new price. When the button is clicked, VB needs to find the appropriate stock, and then change the current price.The data needs to be pulled from the text file into a temporary file, changed, then the temp file needs to be renamed to the original file name and the original file deleted.This is the only part of the program I can not figure out. I have put my program code here as well. The click event that I need this to work on is: Private Sub btnUpdateStock_Click --- I have been playing with code in that section, so that's why there si abunch of crazey code there.
[code]...
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Oct 29, 2010
I am doing system to read text file it contain numbers and I want to read this data to multi array , the description as :-
This site here :-
DataSet format
My data looks like that :-
20 3 10
10
10
10
0
0
0
0
0
1
1
1
1
1
0
1
0
Code: Attached File(s)
Dataset.txt (246.44K)
Number of downloads: 30
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Jun 7, 2011
IM trying to write data from an array to a text file. what has confused me is how to write data from an array which has a structure.
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Nov 4, 2009
I would like to pass a whitespace character by using the System.Text.Encoding.ASCII.GetBytes(" "), and System.Text.Encoding.Unicode.GetBytes(" ") , where " " is the whitespace Character required. What do I need to type (" ") to get a whitespace character passed.?
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Dec 22, 2009
I am trying to get the data from the text file to load into an array of structures and then be displayed in a listbox on FormLoad with no luck, all I get is a blank listbox.
Code:
Public Class frmMemList
'Create a structure to which data from text file MEMBERPHONES.TXT will be read.
Structure MemberList
[code]....
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Dec 22, 2009
I am really struggling lately for some reason. I do not know why, but I can not get simple programming code to work, usually due to simple mistakes. Anyway, enough about that.Here is my code, I am trying to get the data from the text file to load into an array of structures and then be displayed in a listbox on F
Public Class frmMemList
'Create a structure to which data from text file MEMBERPHONES.TXT will be read.
Structure MemberList
[code].....
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Jun 10, 2011
I have been searching and searching and cannot find out how to do what I'm looking to do, that is the only reason I would post a new thread.[code]...
After reading the file, I want to load the NameId, the ColourId and the Text into a multidimensional array. Anything I have found about loading into an array shows text being separated by small delimiters like commas, but this I cannot do because I need to use this format. What I am wanting to do is load all of the NameId's into a listbox and when a certain NameId is selected, it will bring up the Text in a TextBox and the Colour value in a ComboBox.
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Jun 16, 2009
it is a normal text file, I would read it then , (This part I got it) print it out to a reciept printer, send insert ascii code to force the printer to cut the recipt.
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Mar 29, 2010
I'm trying to build something called a structure which will store data it retrieves from a text file. I have the structure set up like this:
Structure Employee
Dim FirstName As String
Dim LastName As String
Dim ID As String
Dim Hours As Integer
Dim Wage As Decimal
Dim EarnedPay As Decimal
End Structure
[Code] .....
How to set these operations up?
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Mar 19, 2010
I am having trouble turning a set of data from a .txt file into arrays, basically, what i have in the text file is:
Eddy vbtab 20
Andy vbtab 30
James vbtab 20
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Nov 18, 2010
I made a form with text boxes in a 6x6 square pattern. It will do a streamreader from a text file a number that indicates the size of the array. Then fill in the boxes with the numbers of the array. Then it will calculate the rows and columns to see if they add up to a single answer. Then it will display to an output window if it is a magic square or not. Meaning if all rows and columns add up to a single number its magic. If they dont add up to the same number then its not magic. Then it will repeat this check and output from the information of the other arrays from the text file.
I know how to code for the streamreader and get it to add the rows and columns. Im not sure about what code I need so it can check the answer if its magic or not and repeat it till the end.
Here are the contents of my text file which it will read from.
CODE:
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Aug 27, 2009
I'm new to .net. I would like to know how to convert a text data in string or in a file into a simple byte array[ ] format.
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Aug 23, 2009
I am trying to enter the following on an excel spread sheet from vb.net:applic.activesheet.cells(1,1)="=server|topic!" & Item & My.computer.keyboard.sendkeys("{CNTRL} {SHIFT}{ENTER} ")The error says: "Expression does not produce a value"I tried even {ENTER} and still the same error.
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Oct 7, 2011
I'm trying to enter code into a button to save a text file from a text box.The text box is called txtEditor, I have created an open file button using the openFileDialog1 and have been successful with this I just can't get the saveFileDialog1 to work.
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Apr 16, 2011
I've got a program which displays data in a listbox in five columns. All are separated using one or more ControlChars.Tab. I want to write these columns to a text file, however, when I do, my columns lose their alignment. I can change alignment so that it displays nicely in text file, but then it is off in list box. Is there a way to get what I see in my listbox to display the same way in a text file - maybe a different way of separating my columns (not using ControlChars.Tab)?
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