Loading Text File And Then Search For SubStrings

Dec 16, 2010

Trying to write an app to load a Text file and then search for substrings that contains some specific characters to compose a list. Tried first loading the text file into a StreamReader then search line by line for my substrings. Had to write a lot of code to identify my strings, but it worked ok. Then tried loading the text file into a RichTextBox then use RichTextBox.Find(......) to look for my substrings. The " .Find" property makes the code really simple, but using RichTextBox the app was really slow.

Using Stream the loop was completed in about 2 minutes and using RichTextBox in about 30 minutes! I will need to make a lot of searches and using RichTextBox is lots easier, but is too slow. Is there any way to perform search operations using Streams instead making a loop and go looking line by line??? Or what else would be a good solution to search for strings in a text file??

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How To Identify SubStrings In Text

May 6, 2009

I have a large string in which I need to replace specific strings with other values. For example, within this string I might see the following characters: [[sub id=5]]. I am trying to replace those substrings with values, pulled from a table and based on the id. What would be the simplest way to accomplish this. My first thought was to loop through and examine each character and note their positions when they match the pattern. I would then have to identify the id. That would be fairly complicated, however, and there must be a better way.

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I am trying to read a text file into a text box, and show the progress bar loading. Sometimes if the text file is big, i don't know when it will finish reading it. This is basically the code i use to read a text file, but i don't know how to show the progress bar.

[Code]...

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Loading Text File Text Into Two Textboxes?

Feb 2, 2010

I'm having a problem with loading two text boxes from a saved text file. I've built a log in form that saves the user-name and password on separate lines in a text file.I have a save button and a load button. My problem is that I'm new to Visual Basics and I can't figure out how to get the two lines from the file to load into their separate boxes on the form.The code that I have loads both lines from the text file into the User Name Box.Oh the username is on the first line in the text file, and the password is on the second line of the text file. Could someone please help! My Loading code is:

Private Sub btnLoad_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoad.Click
If File.Exists("Login Config.txt") Then
Dim ioFile As New StreamReader("Login Config.txt")
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[code].....

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Mar 12, 2009

I am trying to create a program which reads data from a text file and insert the data in to a SQL 2005 table, but unfortunately it only reads the first line and insert correctly but not the rest of the lines on the text file

The text file looks like this

Test.txt
John, Doe, 40, 12/04/1968
Micke, Gulm, 39, 07/08/1970

[Code].....

sort out this issue as I need read the entire text file which in reality will be about 5000-10000 lines and insert them in to the SQL DB line by line.

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May 26, 2010

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Jun 25, 2010

I made a text file (.txt) in my project by going to Add New Item and then Text File. I want to have my text file be loaded into the rich text box i have on my form but it doesn't work. It says it can find the file. This is my code:

[Code]...

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Loading File To Edit Text?

Aug 1, 2009

I am new here and just started visual basic 2008. I want to load a BIG file to edit the text. It is 24MB So whenever I load it in the richtextbox it shows : 7@
:/ Regular text files load fine.
Here is the
CommonDialog1Open.Filter = ("EXE [*.exe*]|*.exe|All Files [*.*]|*.*")
CommonDialog1Open.ShowDialog()
rt1.Text = (My.Computer.FileSystem.ReadAllText(CommonDialog1Open.FileName))
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Feb 5, 2009

So i have a text file that is created in the program which can be loaded back into the program(game save)

Whatever is in the text file "stats" should be listed in listbox1 in the same order it is in the text file. The same with "items" in listbox2. And then "quests" will be in listbox3.

The problem is when i load it instead of what is in the text file it says...

note that box3 is correct that it has nothing in it.

[Code]...

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VB - Simple Text File Loading ?

Dec 25, 2010

Getting a vibe that my VB is cursed. All I want to do is load a textfile and have the text appear in TextBox1 But no. I have looked at 3 different tutorials and I have tried copying their code word to word but still!

Public Class Form1

Private Sub ImportToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ImportToolStripMenuItem.Click

[CODE]...

And it gives me the following errors:

Error1Character is not valid.C:\Users\Saurabh Sharma\AppData\Local\Temporary Projects\WindowsApplication1\Form1.vb1067WindowsApplication1
Error2'daText' is not declared. It may be inaccessible due to its protection

CODE]...

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Image Cannot Be Found After Loading Text File?

Apr 26, 2011

My program requires that a picturebox change its image during run time. I've used:

PictureBox1.ImageLocation = [file location]
PictureBox1.Image = Image.FileFrom([file location])
Both work fine, usually.

[code].....

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Loading A Text File (comma Separated) Into DGV?

Feb 3, 2012

i have code for loading a text file (comma separated) into my DGV:

If Not DataGridView1.LoadTextFile(TextBox1.Text, ErrorList) Then
Dim sb As New System.Text.StringBuilder
sb.AppendLine("Failed to load text file, see error messages below.")

[Code]....

I'm wondering...is it possible to run this code if the user was to drag and drop the text file onto the datagridview, rather than having to navigate via buttons etc...it'd make it a much nicer method!

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Loading Content Of Text File Into A Listbox?

Jun 12, 2009

I need to load the contents of a text file (itemInfo.txt) into a list box

Public Class MainForm
Private path As String = "L:Visual BasicSequentialHW"
Private Sub MainForm_Load(ByVal sender As Object, ByVal e As System.EventArgs)

[Code].....

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Jun 1, 2012

I'm writing a VB.NET app where I want to load an internal text file from Resource. But the code shows Invalid URI: The Uri string is too long. The code is
'document.Load("C:UsersSouDocumentsVisual Studio 2010Projectsinfo.xml")
document.Load(My.Resources.info)
'some processing job with XML node ...
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Jan 15, 2009

I wrote the code and it works great but then i thought i'd have a little challenge and go above and beyond. i decided to make a highscore leader board system. i used the following variables and sub classes to make it but im having a slight issue...

CODE:

The idea is that i wanted to make the system able to associate a name with a score, sort the score from greatest to lowest, save it to a text file, load it from the text file, repeat.
so heres a quick list of what i have working...
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Thats my main issue. When i have data loaded from last time i try to add a new score to the list but then it gives me an error.

InvalidOperationException was unhandled Failed to compare two array elements

-pointing to the line...

In the details of the exception it continues to say...InnerException {"object must be of type String"}
i don't know which parameter its referring to tho, the variable name is already of type string and count is type integer.

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May 5, 2011

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May 11, 2009

I have a few questions. Working on a program here that reads in data from a .txt file and puts it into 3 different labels during the form load procedure. I was wondering though, here's what I have so far:

Dim contents As String
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[code]......

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for the display button

Private Sub displayButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles displayButton.Click
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[Code].....

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Aug 22, 2010

1) How can I load data from Text file to DatagridView. I want it because I'm making a listener. And when I load a data from text file, i want to edit rows. And this calling the second question.
2) How can I save data, Datagrid to Text file.

I found a code
Dim obj_oledb_da As System.Data.Odbc.OdbcDataAdapter
Public Function ConnectCSV1(ByVal filetable As String) As DataSet
Dim dataSet As New DataSet
[Code] .....
I can load data with this code but I can't save.

My Text File must be like this:
#IP
127.0.0.1 localhost

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I want to add the contents of a comma delimited text file(PracInfo.txt) into a Dictionary on Form_Load. The contents of the file are as follows:
wlvc,coadmin
mrmd,thadmin
ccoa,oaadmin
bfhl,bfadmin
trty,tradmin
nppp,npadmin

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Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim sr As New StreamReader("C:Programming filesPracInfo.txt")
Dim openWith As New Dictionary(Of String, String)
Do While sr.Peek <> -1
strHold = sr.ReadLine()
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Loop
End Sub
End Class

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Loading Txt File Information Into Multiple Text Boxes?

Mar 19, 2009

I know how to load a txt file into a single text box, but im having trouble loading a text file with multiple output information into multiple text boxes using commas to separate the information.

ex)
txtfile:
123, Employee Name, Employee DOB

[code].....

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Program Is Loading Information From A Text File To A Listbox?

Dec 13, 2011

The duplicates need to stay as they are in the text file. I just want the duplicates deleted from the listbox when viewed. How would I do that? Say there are two orders made by the same user. I only want the user to show up once in the listbox...

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VS 2008 Loading 10 MB Text File To Richtextbox And ProgressBar

Nov 20, 2009

im working on the project and loading 10 MB text file to richtextbox, but problem is my application freezing during that time. Can anyone post the solution for progressbar during the file is loading?

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VS 2008 Saving And Loading Variables To And From A Text File?

Mar 22, 2009

visual basic 2008

I am pretty good with visual basic and visual studio, but the one problem I have is saving... I am currently creating a game, and it has a lot of variables, I want o be able to save all those variables to a text file and then re-open it later. When it is open, i want the variables to have the original value from the text document.

To sum it up: I need variables to be saved in a text file, and then be able to open the text file back and have the variables have the proper values from the text file.

I have been searching around google, and I found ideas, but I have no idea how to use them. Like using XML or saving a table with " TextFile.WriteFromTable" "TextFile.ReadToTable" but I don't exactly get how to use those (the posts weren't too clear)

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May 13, 2009

ok i am trying to do something pretty simple.I have a text file loading into a text box which looks like this:

define = _obfuscate_CSBmAn9z
defined = _obfuscate_XGkLCg47bQÿÿ
str_replace = _obfuscate_aAFqNWoGfQ87Pjg
error_reporting = _obfuscate_bShjLzcWFHZ5H2ZgAQ08
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[Code]...

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Jul 13, 2009

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May 15, 2009

I was wondering if this was possible, if so can you point me in the right direction? "Display the progress of loading a txt file into a listbox with ProgressBar".I am basically loading a file (blah.txt) which contains several strings each on their own line:[code]I would like to display the progress of the listbox loading within a progress bar.

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Feb 15, 2012

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