Remove Character From A Text File And Prevent Crash W/ No Text File?
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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Nov 11, 2009
I want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
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Nov 11, 2009
I want to read a text file(.txt) character by character into a database.There are 28 characters on each line and I want to read the first 16 into a column in a database and the rest in another column in the database.
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Feb 15, 2011
I am new to Visual Basic and I am simply looking to remove some text (an example below) from a text file. I have lines of text throughout the file that contain paths to other "different" types of files. I am looking to remove any text between "/" markers inclusing the markers themselves. such as "/path/"Everything I have come across list a streamreader and a streamwriter that list two different files and bla bla. Inst' their a simple readfor.(txtFileLocation.Text).remove"/*/" save file overwriting the original? [code]...
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Dec 16, 2009
I would like to know how to remove part of a text file between two points
For example, say i have a text file that contains:
Code:
START
<LOWER_LINE>
-4.920156 -2.543200 4.277774
[Code].....
I want to write directly to the source file. The files I want to edit are only about 30KB
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Jul 22, 2010
i have a txt file contains this text
20:12:22
i want to replace ":" with ""
so it will become
201222
how can ı do this?
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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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Oct 31, 2009
I have a block of text in a text .txt file that looks like this: [code]I've tried reading every character and entering them into a 2D array (failed)I've tried splitting them into individual lines and entering them into a 1D array (Success, but very difficult to target individual characters from this, and will take a long time to set up as I only did this for 10 lines)
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Dec 27, 2011
How can I remove the first character from a text string?
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Feb 1, 2011
How to read a single character each time, from a text file using vb.net? I mean that if the txt file contains code as " my name is...".It should be read initially as :'m'..after some time it should show 'y'. then 'n'.'a'..'m'.'e'.like that..
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Sep 21, 2009
I have a simple text file containing a list of names that I wish to sort. I was hoping for something simple like:
System.IO.File.ReadAllText("MyFile.txt")
System.IO.File.Sort("MyFile.txt")
System.IO.File.WriteAllText("MyFile.txt")
or something like that. Didn't want to actually write a bubblesort/quicksort routine myself.
I would imagine the routine would just rewrite the final file or would I have to make a new file and copy the contents back to the original?
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Sep 25, 2009
I have 2 files:
1.) fname (original file)
2.) TempHeader.txt (Header)
In my program, I'm reading each file with the StreamReader, then prepending the header onto the original file to create a 3rd file which is the combination of the two. My problem is that the original file contains the following:
[Code]...
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Feb 19, 2009
I have a program to read line by line from text file. [code]There is run time error while TextLine data has ' or "May I know how to read the data with ' or " character?
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Jun 21, 2012
I have two text files. The fields in each text file are separated by a space (" "). Some of the fields in column 1 of file 1 match the fields in column 1 of file 2. However the third column in file 2 is a numeric field. What I wish to do is check every field in file1 against the field in file 2, and if the number is 1 then remove the row from file 2, if the number is > 1, then subtract one from it.
I have the following coding so far.
Dim lines1 As New List(Of String)(IO.File.ReadAllLines("File1"))
Dim lines2 As New List(Of String)(IO.File.ReadAllLines("File2"))
Dim values As New Dictionary(Of String, Integer)()
[Code]....
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Aug 24, 2011
How can I remove lines from a text file at the index of a listbox's selectedindex?
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Jul 29, 2009
I have text file that need to read until *+*+* Top *+*+*and write the content until *+*+* Top *+*+* but i dont want to write *+*+* Top *+*+* this line[code]...
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Jul 22, 2009
I have lines like this in my text file
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
11.0 28 Black (2 06.00 01.0) [T375 ] 135111 -46725 188611 35775
[Code]....
I want to remove all the line which contain [Txxxxx..] and place it in another file. i want to be do like cut and past. Is that possible. Can we remove lines in text files?
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Jul 18, 2011
I am writing a program using VB6 and i can write and read to a file using the System.IO.StreamWriter and System.IO.StreamReader. Now i am trying to delete an entry in the file and shift the remaing entry's up to prevent a blank line.[code]...
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Mar 28, 2011
Is there way to remove the last 14 characters (last line) from a 1 MB text file without reading in and writing out every single line?
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Apr 1, 2009
Ive been trying to remove text from a txt file, the txtfile contains every item in the listbox, when a user selects a item then push's button3 it deletes it from the lsit and well Ive been trying to get it to delete from file to using
[Code]...
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Feb 22, 2012
I have created an XML file using streamWriter.. Now, i want to remove the line breaks in my XML file.. Is there a way to accomplish this task.
[Code]...
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Aug 18, 2010
I know there's ton of examples on the forum but i could not get it to work the way i want.
Sample CSV :-
Unused,172.22.21.2,SD103001
Unused,172.22.21.3,SD103002
Unused,172.22.21.4,SD103003
And what i wana do is change the Unused to Used so basically once this is done it will look like.
Used,172.22.21.2,SD103001
Unused,172.22.21.3,SD103002
Unused,172.22.21.4,SD103003
One thing to mention is i dont want to loop through the whole file and change all the Unused to Used. So basically software fires up opens the file and looks for Unused and changes it to Used and does the rest of the function and shuts down. Next time the software is fired up it goes through and does the same thing.
[Code]...
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Nov 23, 2010
I have a comma deliminated text file which i am using to generate a multidimensional array using the following [code]...
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May 4, 2011
Basically I've got a list of items in a text file, but sometimes a blank line gets inadvertently put in there, and I need to be able to delete that line (or change that line to a set value, either is fine).
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Jan 7, 2011
Having trouble removing Duplicate lines in a text file. (Exact Duplicate lines).
If I have a text file called animals.txt, how can I use the StreamWriter to loop through a text file, and erase and duplicate lines?
For example: If the text files says this...
cat
cat
cat
dog
[Code].....
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Jun 9, 2011
I am using this vb code, to save items from an array to a text document. But when I save to file, I get loads of speech marks around text
1. How can I remove the speech marks placed around text in file
FileOpen(1, CurDir() & "Back-" & DateTime.Now.ToString("D") & ".txt", OpenMode.output)
For First = 0 To 8
[Code]....
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Mar 18, 2009
Im looking for a function that when passed a line will run through a textfile and remove said name for example in a textfile that contains
One
Two
Three
[code]....
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Dec 16, 2009
how to remove part of a text file between two points
For example, say i have a text file that contains:
START
<LOWER_LINE>
-4.920156 -2.543200 4.277774
-4.649939 -3.075088 4.222839
[Code]....
I want to write directly to the source file. The files I want to edit are only about 30KB
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Apr 10, 2012
I have a comma delimited text file, like this;
[URL]
my program can add new lines and select url's but I can't get the remove button working, I read that (maybe) I have to read all lines and write a new file.
If removename = currentfield Then
Dim removedata As New System.IO.StreamWriter("z:station.list.txt")
removedata.Write(""(currentfield))
removedata.Close()
End If
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Nov 17, 2010
I'm trying to make a snippet that will remove duplicate lines from text files. However, I seem to be mixing my for loops up.. does anyone know a simple way that I could do this?
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