I a very large text document, I need to read some lines and at the end of each line, insert a text from the header of each page to he preceding lines.I have the following code the reads the file and displays it on a list box.Public Class Dialogs..[code]
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I have a text file containing lines of data (File 1). I need to delete all the lines in another text file (File 2), which are found in file 1.So I could read file 2 line by line. And then once the line has been read, read file 1 line by line to search for a match. But that's going to be painfully slow.Or I could read file 2 into memory. And then read file 1 line by line and REPLACE the lines in file 2 with nothing, therefore deleting them. File 2 could be 100 mb, so I'm not sure about reading it all into memory.
View 16 Repliesi 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.
I have the same problem that Niphoet had in this thread: vb .net overwrite a specific line in a text file
I am trying to implement the code that Axarydax showed in C# that I am trying to translate to use into vb.net. My problem is that the code will make my new text file but will not write any of the lines from the other text file to it and just leaves it blank. I think my problem is with the while loop statement but I am not sure.
[Code]...
I have this code now doing and that is creating my chart from data off a text file. The final task I need to be able to do, to complete my program is have a way to select how many days of data to populate my chats with via a Text Box input. I am thinking I will need to read the complete text file first to count how many lines are in it, then what ever is put in the text box it will take that many lines of data from the text file and populate the chart. For this to work correctly it would have to read the lines of the file back wards.(last line of file would be the first line..) e.g. textbox1.text = "7" then the chart would show only the last 7 lines of my data.
I was looking up examples of Counting the lines in the file, I think I am close here...
Dim fso As New FileSystemObject
Dim txt As TextStream
Set txt = fso.OpenTextFile(ReadChart, ForReading)
txt.ReadAll
Textbox2.text & txt.Line & " line(s)."
[Code] .....
I want to make a program that reads the line of a file, and puts it into a text box, then reads the second line in that file, putting it in another text box... Say i only have a file with two lines, how can i do this?I have written a code, but it only works for the first line. Is there a preset function in Visual Basic that will allow me to read a certain line?
Imports System.IO.StreamReader
Dim AllText As String = vbNull, Lineoftext As String = vbNull
Dim Open_File As New OpenFileDialog ' Dim Open_File as a Open File Dialog
[code]....
How can I read every eight lines of a text file, store it in arrays to load into a datagrid?
View 11 RepliesI need to read the text file and take only lline from 1 to 20 and writ it in another text file. Is that possible to do, How can we do this?
View 2 RepliesI am trying to make a script to spit command lines to a bat file to compress a bunch of files singly and then delete the original ones. I am sure that is easy to most of you, but I living a ____ trying to do this. A have a file list like this one belo, which was created with a command -- Dir /b /s /a-D N: > filelist.txt
[Code]...
read lines in a file, split the lines and spit the result to another file
View 2 RepliesHow can I read a text file 10 lines at a time?
View 10 RepliesI would like to read a file and display certain lines ( like from line 5 to 10) in a label. i know how to read the file line by line but not the specified line i want.
View 8 Repliesi wanna read lines from a text file randomly until all the lines are read & wanna set a time interval in each two words apart. think a piece of code to do that in vb.net?
View 2 RepliesI'm trying to do is to read the lines from a text file, and transfer them to an array.[code]...
View 3 Repliesi want 2 textboxs to read from 2 different lines in my textfile.how can this be done?
View 2 RepliesI'm trying to read a text file with multiple lines and then display it in a textbox. The problem is that my program only reads one line.
Imports System.IO
Imports Microsoft.VisualBasic.FileIO
Public Class Form1
[code]....
I am trying to read from a file that was created with a stream writer the names line from the text file that contains data for name, phone number, pager number, cell number, voice mail, and email.What I need to do is read and load the names from the file into a list box, and then from the list box be able to choose each name and have the information (phone, pager, cell, etc.) show up in text boxes that goes with the specific name.
View 4 RepliesI am very new to VB.NET, I want to create a Forms Application to load a text file that has lets say 50 lines, some of the lines are identical and those are grouped together and some same format but different make up. Have it loads it into a text box in the form, to see - but I want another button to randomize all the lines and then show that in the box, and then have a Save button to overwrite the orginal.
[Code]...
I have a form to calculate some settings. It works just fine. I will input some decimal numbers to 8 deferent Textboxes. For example I input 40.0098 to textbox1. When I press a button my form will calculate these setting, and it will generate some new values. What I want to do is save the user inputs and the generated values to a text file each input or value has its own line it should by after the name of that input or value so the user could read the info contain in this text file, so per say line 1 of this text file will represent the input of textbox 1. it should save it as "parameter 1 = 40.0098" to line 1 of the text file I also want to be able to load this text file to my form (only specific lines) when I press another button I should get a dialog box to be able to select the text file, once I do that my form should read line one and only the input what after the "=" so textbox1 should now show 40.0098 only.
View 8 Repliesi need to read binary file and in this file found the string and replace it with other one and save the file afterwords. I found many example to read binary, but to find and replace is for me mistery.
View 3 Replieswhat I'm trying to do is read a text file and convert column2 in to lowercase and save it again.
But I get Value of type 'Integer' cannot be converted to 'System.Globalization.CultureInfo'. after .ToLower?
Dim Convertcolumn = From line In System.IO.File.ReadLines("Path")
Select line.Split(" "c)(1) & line.ToLower(1)
[Code].....
How do I read all the text from a text file and save it as a string variable? For some reason I remembered it being something like this: IO.FromFile.ReadAllText("path") but thats not it.
View 3 RepliesHow saving what is written in a text box in to a text file ??
Note: Iam using vb 2005 express edition
I need to fetch numbers one by one from text file, suppose i have a text file with different serial numbers, like;
SHG9001231 SHG9001232
SHG9001233 SHG9001234 SHG9001235
SHG9001236
[code]....
there is no sequence like tab delimited, comma delimited or CL/LF, so it need to search on every prefix series and fetch entire serial number. But i have no clue how to write code in vb.net 2005.
Such as the text file has 5000 lines and 500000 columns. Each line has the format "xxx,yyy,zzz,000,...."
View 39 RepliesI have a file that has names of competitors. I want to write a VB code that selects a random name from the file.What I need is show the names moving quickly once I press enter it will select the name.
View 1 RepliesI have text in a textbox that I want to write to a file. I'm trying to think of the best way to do this. Would reading the text into a buffer, then writing the buffer to a file be the best approach? I'm sure there's more than one way of doing this and I wanted to see if anyone had any input on the most efficient way.
View 6 RepliesI got the following code to read an XML file: [Code] Obviously the count limits the amount of lines that it reads. But how do I get it to read all the lines in the file? Ive tried removing the And (count <20) but when I run the program nothing happens.
View 2 RepliesI am trying to create a console application that does the following:
1) read a text file
2) Save the content over to a SQL Server database
3) Use command line arguments to allow user to specify any delimited file
How do you pick a random piece of text from a text file in this manner....
[Code]...
I need to pick a random answer, not including the question. let it be the simplest solution. I am only a beginner.
