Looping And Counting Using Text File
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 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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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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Jun 25, 2009
[Code] I want to replace the X and Y column to user enter value. For example If User enter X=100 Y=100. So the text File Should Do changes Like this:
In first line The X and Y should Be replace by 100. For the second line to the 10th line The X should X=X+2.54 and Y remain 100. For 11th line X=100 and Y=Y+2.54. From line 12 to 20 X=X+2.54 and Y remain which is 102.54. The pattern should be continue until end of file. For every 10 line the Y value should change. This Is the code to replace X and Y value: [Code]
code working perfectly for X values. But for Y values for the first 10 lines is no problem but after that the initial Y value is adding by 2.54 and that value should remain for 10 lines only but not for 20 lines.. Actually the number of lines is determined by the user. they need to enter the number of lines. User must decide to how many lines once the changes should take place.
And One more question is : If user enter Row= 2 the changes should occur for two set of lines only. If user enter Row =2 and column=10 So only 20 lines should changes other lines should remain the original value. I attach my text file after the replacement. But the replacement is still wrong.
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Oct 14, 2011
Here is my code for splitting "," from the text file. But the problem is I don't know how to include looping in the code to make the code read the whole text file. when I run this code, it's only read the first line of the text file.
Dim sr As StreamReader = New StreamReader("C:\drill.txt")
Dim data As String()
data = sr.ReadLine().Split(",")
[Code].....
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Feb 15, 2012
I have the following basic code to read a text file from a StreamReader:
Using sr As New StreamReader(FileData)
Dim line As String = String.Empty
Do
'Error occurs on the next line after looping
'past the *last* line in the file...sometimes
line = sr.ReadLine()
'Some code here to parse and process the line
Loop Until (line Is Nothing) OrElse (line = String.Empty)
End Using
I tried changing the Do Loop to Do While Not sr.EndOfStream I tried checking If sr.ReadLine IsNot Nothing and a few other things but I keep getting the Cannot access a disposed object. Object name: 'SslStream' error after all 105 lines have successfully been read and processed. This code has been working for a couple of years, but there seems to be some issue with certain files (recently) that is causing this problem.
I opened the file and I didn't see anything out of the ordinary. No extra blank lines, funny characters or anything of the like. Just a normal file with 105 properly formatted lines. So even know there is something about this file causing the error, I need to obviosly handle this programatically.
What can I do to prevent the sr.ReadLine() line of code from throwing that exception that I have not yet tried?UPDATE Upon reading the last line of the file, the 'EndOfStream' property on the StreamReader goes immdeatly to: EndOfStream: {"Cannot access a disposed object.Object name: 'SslStream'."} It never toggles to 'True'. This makes checking for this condition problematic.
I think I have figured out why this issue only occurs sometimes: if I add in a blank line to the file at the end, none of this ever occurs. It is only when the last line of the file contains data. Still, I should be able to handle this programatically. Telling the vendor supplying the file to always add a blank line at the end should not be the solution.
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Mar 14, 2010
I need a simple method of counting all characters in a text box and when a button is clicked a message must display if the amount of characters has exceeded 25.
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Jun 1, 2010
I have Access 2007 db in which users insert some data (name, last name etc.). This db is for some problems in my work and every of this records needs some solution. When we solve this problem we come back to this record and select YES in yes/no field of db.I want to count inserted records and show it on first form of my application like this (label or text field, it is not important) :
* all records : 124
* solved records : 50
* not solved records : 74
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Mar 27, 2012
I have a display system that I created in VS Studio 2005 that uses ini files for certain functions. Reading and writing to ini files is easy enough but what I just can't figure out is how to count the number of items under a particular ini section.
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Feb 9, 2009
how I can loop through text boxes.I will be useing several text boxes. Some created at design time and some at run time. The name will be name with a number at the end (MyTextBox1,MyTextBox2)The below code will work for text boxes added at design time but will not take in to account the run time added boxes. Basicly I am looking for that vb6 control array .ubound The other problem with using below code is the boxes are not on the same container.
Code:
Dim Tbox As TextBox
For i As Integer = 1 To 4 'Need a Ubound?
Tbox = DirectCast(Me.Controls("txtMyText" & i.ToString()), TextBox)
MsgBox(Tbox.Text)
Next
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Feb 19, 2010
I'm new to VB.Net. I try to convert from VB6 to VB.Net (2008) with a simple code as shown in the picture below but its come up with Warning. Did anyone know how to solve this warning. Sorry for lame question..
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Oct 2, 2010
in a form I need to set the text of labels while looping through a range of dates set by a start date and an end date. Right now I have come up with this code,
[Code]...
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Jul 26, 2009
I was wondering how i can loop through a combo boxes items display item field - and return the value for each - i want this to be generic regardless of the combo boxes data source - or if the combo box has been populated with a string list / class etc
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Feb 18, 2011
I have code to automize the creation of medical record charts in a data tree structure. I need to loop through a basic .txt to get relevant current case numbers and automate their chart creation structure. hat's wrong here... Msgbox(s) is returning my file name - not the first line in the file.
HTML
Dim myRootpath As String = "\backupcenterPDF_Archives$MedRecords"
Dim myTemplatePath As String = "\rbase$EMRTemplates"
[code].....
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May 17, 2009
I have a form with a listbox. I'm adding items to the listbox through a file that I saved. When I open the file, I want each line/string in the file to go in as a separate item in the listbox. I've gotten it to work so far but only with 1 string. I need to loop the part where the file is being read to be able to add all the strings that are within the file to the listbox. How do I do this? So far, this is the code I have:
VB .net
Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click OpenFileDialog1.Filter =
[code].....
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Jan 4, 2010
I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
[Code]...
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May 7, 2010
i want to take a comma delimited text file and then select all unique records based on one of the fields in the text file. should i read the text file into a data table or just use a data reader?
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Aug 30, 2009
Hi, i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated.This is the code im using right now:
Private Sub TreeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
Select Case e.Node.Index
Case 0
[code]....
Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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May 20, 2009
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.
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Feb 28, 2009
i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated. [code] Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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May 7, 2010
Ok so I have a combo box that lists a set of names. What I want to do is match a selected name to a text file and read from it. The text file contains the same name and has grades listed below:
ex.
Johnny Bravo
30
10
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Nov 3, 2009
I want to create a text file or see if a text file exists when application starts. The problem I was having was after creating the text file, I tried to write to text file and got an error saying that another process was using it.
Dim test As String = My.Computer.FileSystem.SpecialDirectories.MyDocuments & " est1.txt"
If System.IO.File.Exists(test) Then
MsgBox("File Loaded")
Else
[code]....
I looked up topics on filestream, but am unsure if this is how to use it. Is my code ok? Is there another way to create a text file?
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Jul 22, 2009
I save data from datagridview to text file. I also load the same data from text file into datagridview for edit and update the same thing to text file. Let say this text file i called as Drill.txt. I have another text file called header.txt which need to match its value with the value of Drill.txt file then overwrite value from Drill.txt to header.txt. Now i want to make my Drill.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program
[Code]...
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May 12, 2009
i have 5 textboxes in a form. I have a streamwriter that writes all of their text to on text file like this:
Code:
Dim xfile As String = Application.StartupPath & "/Set.txt"
If File.Exists(xfile) = True Then
Dim writex As StreamWriter = New StreamWriter(xfile)
[code]....
I was wondering how to get the text under the each number and place it in the corresponding textbox.
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Oct 14, 2009
I am using a thread to call a process which is spliting a text file into various text file and folder using the system.io , now when calling the Textsplit() with thread on click of a button i am getting the error below , how to use thread and why this error occurs.
Cross-thread operation not valid: Control 'txtbox_destn' accessed from a thread other than the thread it was created on.
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Dec 3, 2011
I am trying to ping a text file("C:/Domains.txt") which is a list of domains, then have the resulting IP address written to a different text file ("C:/IP_Addresses.txt"). And this action will be done with a Button_Click.
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Apr 7, 2011
All I would like to do is remove one character from the line of the text file that I am reading, which is the first character and also prevent the program from crashing if no text file is present.Here is the code. Can anyone notice where I am going wrong? I thought the "if" statement would cover the crash but it didn't. Clueless, but sort of have an idea on the character removal.
Private Sub RadioButton_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton.CheckedChanged
Dim fileReader As System.IO.StreamReader
Dim lineRead As String
If RadioButton.Checked Then
[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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Mar 16, 2012
I have a simple form with Start/Stop buttons and a textbox that shows a ctr. When you click the Start button it loops to displays an incrementing ctr in the textbox. Can't seem to figure out how to get the Stop button to work while the ctr is being displayed. I've tried putting the loop in BackgroundWorker and Delegates too with no luck. Am I close or in left field, what's the magic? [code]...
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Feb 4, 2011
Ok, so I have a string called item. It's value is "Coffe`". When I try to get the number of caractors by using:
textcount = item.length
However it returns with the value "5". even though there is 6 caracters.
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