I have a text file that has multiple blank lines and Im trying to return all the lines between two of them specifically
so if I have a file that looks like this:
[Code].....
I would like to grab lines 8-13. Unfortunately, it might not always be 8-13 as it could be 9-20 or 7-8, but it will however always be between the 2nd and 3rd line break.
I know how to trim characters and pull out singular lines, but I have no idea how to trim entire sections.
To reduce the size of some images I have, I'd like to remove the white padding that some have. The idea would be that if one has large white areas on the borders, then those can be cropped to save some space.
How can I ignore a blank line in between the data in a text file using VB.NET? For example, I have a file with data like this
Line 1: 020220date20101231salesvalue52.. Line 2: 356465date20101231salesvalue52.. Line 3: Blank Line Line 4: **strong text** Line 5: 356465date20101231salesvalue52.. Line 6: 356465date20101231salesvalue52.. Line 7: Blank Line Line 8: 356465date20101231salesvalue52.. Line 9: 356465date20101231salesvalue52.. continues...
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).
I have a ListBox that I add items to using the standard:
ListBox1.Items.Add(whatever)
I would like to increase the space between entries, but not adding a blank line, since I do not want a blank option tha thwe user could click on. Is there anyway to do this?
I have tried:
ListBox1.Items.Add(whatever & vbCrLf), but no change.
I am creating an application which uses OleDb to connect to an Excel spreadsheet and read the data into DataTable. The problem that I am having is that some of the columns I am getting are coming up blank, I've managed to narrow down that this is because that the first few lines for that column are blank. As unfortunately this is valid in the context of the Excel spreadsheet as not all dates etc. are required to be filled in. I was wondering whether anyone knows of any way that I could go about ensuring that the columns are populated by the OleDbDataReader even if the first x number of rows have that column as blank.
I have a string which contains many rows of data which has been converted from a datatable. The last row of my string has nothing within it, no spaces or anything. How can I get rid of this row? I have tried regex, but cant seem to get anything that does the job. I am writing in VB.[code]...
I'm writing a simple application in vb.net and need to output some information to a log file for diagnostic purposes.In order to ensure that the log file doesn't get too big, I need to trim it to a certain number of lines (say 5000). For performance reasons, the trimming doesn't have to occur each time a log entry is written out nor is it critical that trimming occurs (for example, if the application crashes prematurely).
However I'm not really sure the best way to trim it. Loading the entire log into memory and then re-writing only the last 5000 lines back out would work, but I'm sure there is a cleaner and better way to do this.
I have a large file (typically more than 1GB) with following format[code]...
My question: Is there a simple way to trim the header information without have to read the content part and save to disk again? I mean I just need to modifying the existing file and delete the header part.
I am trying to trim the path from a filename. With the following code, it returns "My Documents" where I should be getting "Test.txt". if I change the 1 to a 4 I get what I'm looking for, but that's not going to work if I'm working with a file deeper into subdirectories.I need it to display the name of the file regardless of location or file type. Any ideas?
Private Sub trimname() Dim filelabel split = current.Split("\")
I want to know if there is a way to trim and audio.For example, I load in a song that is 3mins in length. I only want 1min 10s part to 2min 30s portion of the song and then save it as, let's say a WAV file.
Is there any API that I could look into to do this?
what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here ------------- Dim objReader As New System.IO.StreamReader(sOpenFile.Text) Dim sTextLine As New ArrayList() Dim sText As String = "" Dim i As Integer = 0
How would i go about reading a file Line by Line that within that line The values are delimited by " Example of the data:
"bob" "cat" "1243" "steve" dog" "6789"
I've started this with this code but not sure how to go about the next stage:
Using MyReader As New _ Microsoft.VisualBasic.FileIO.TextFieldParser(My.Application.Info.DirectoryPath & "Records28112011.jd") MyReader.TextFieldType = FileIO.FieldType.Delimited
I'm reading a text file with StreamReader, line by line. If a condition is met, then I do an operation and then start reading the file again from the first line. I realize I could close and then re-open the file, but surely this would be very slow.
I could do this easily in VB6, but pulling my hair out trying to do this in vB.net. It seems that 'Seek' is the function to use, but it doesn't work.
I've seen other examples, where it works, but you must open it a different way -- with a file number.
Imports System.IO Dim I as Integer Dim LineText as String
I' m using those code to save a file but my file have a lot of blank space (and i need to keep the textfile like this) and the codes im using remove somes and doesn't save the file in same shape than i opened it (I mean doesn't keep blanc spaces ).
My save codes :
Dim savef As New System.IO.StreamWriter(TextBox1.Text & "ijjiENGLISHLuniaConfig.xml") savef.WriteLine()
with workpath being the original location and sessionspath being a string with the new location. True is the overwrite property.The file copies a blank file with the same name, but what i want (obviously) is to copy the file and the contents.ie how am i suppose to copy a file?If you're not living on the edge, you're taking up too much room?
in VB6, to reset an xml file was XMLfile.code = " " used? this is in my code and i would like to know how this can be changed over to VB.Net, I also have XMLfile.tabstyle = "RA" and XMLfile.frame = "all" how can i do this in .Net, also i would like to set XMLfile to have the structure of an XML document like i would set the counter 'i' to be an integer.
Is this possible? What namespace is it in? If you're not living on the edge, you're taking up too much room
(VS 2008, VB, 3.5 framework) Files have my name in the Owner property of the file, I want the owner value to be blank. I want to create a VB app that will loop through each file and clear out the owner property value. About 40 folders with about 20,000 files. What is the best way to loop through folders, and update files? Can the owner property value be set to blank?
I'm trying to read a file line by line into an array but It skips the item at index:3 I have it msgboxing just to make sure and it wont even touch it.
Dim Btn As Button = DirectCast(sender, Button) Dim path As String = Application.StartupPath & "Libraries" & Btn.Text.Replace(" ", "_") & ".ipt" Dim i As Integer = 0 Dim lines As String() = IO.File.ReadAllLines(path)
I'm having trouble with reading a .txt file line by line, converting it into a string, then putting it into a listbox. When I execute I get an error saying "IndexOutOfRangeException was unhandled" Here is my
I have a function that is reading a sequential file and storing it into an array by using the delimiters of
The first record appears correctly however, the second element in the array has two null lines at the beginning and at the end of the record. [code]...
