[2005 Tip] Read Any Text File Into A DagaGridView -
I started using VB 2005 Express yesterday. I wanted to populate an Unbound DataGridView from a text file. I couldn't find an easy way to do this...
I didn't want to use any data binding, databases, etc... Just wanted to read the file and put its contents into the DataGrideView.
The code assumes that the text file has rows of data and that the rows are divided into columns by commas. You don't have to know how many rows are in the file, and the rows don't have to have the same number of columns. Rows with fewer columns will simply have blank cells in the rightmost columns.
Code:
'Create a new TextFieldParser. The following code creates the
'TextFieldParser named MyReader and opens the file test.txt.
Using MyReader As New Microsoft.VisualBasic.FileIO.TextFieldParser("C:\ColumnsTestFileRandomLength.txt")
'Define the TextField type and delimiter. The following code defines
'the TextFieldType property as Delimited and the delimiter as ",".
MyReader.TextFieldType = FileIO.FieldType.Delimited
MyReader.SetDelimiters(",")
'Loop through the fields in the file. If any lines are corrupt, report an error
'and continue parsing. The following code loops through the file, creating a new
'array for each row and adding the fields to that array. The array is then added
'to the grid as a row. Any fields that are formatted incorrectly are reported.
'This code assumes there are no more than 20 fields in a row. You should change the
'ReDim r(20) to a bigger number if you need more columns (fields).
Dim currentRow As String()
Dim r() As String
Dim i As Integer
While Not MyReader.EndOfData
Try
currentRow = MyReader.ReadFields()
ReDim r(20) 'Start a new row array
i = -1
Dim currentField As String
For Each currentField In currentRow
i = i + 1 'Get ready for the next string in the array
r(i) = currentField 'add the next string to the array
Next
'Add more columns to the grid if needed
If grd1.ColumnCount < i + 1 Then grd1.ColumnCount = i + 1
grd1.Rows.Add(r)
Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
MsgBox("Line " & ex.Message & "is not valid and will be skipped.")
End Try
End While
End Using
[2005 Tip] Read Any Text File Into A DagaGridView -
I started using VB 2005 Express yesterday. I wanted to populate an Unbound DataGridView from a text file. I couldn't find an easy way to do this...
I didn't want to use any data binding, databases, etc... Just wanted to read the file and put its contents into the DataGrideView.
[2005] Text file -
hey,
i have a text file, i want to read some lines that contains a certain value which will be in a string, i want to look up the text in the text file and then read the values after the text that matches the string, how can i do this?
i know i need to use the file stream reader
Reading a text file after clicking it -
Sorry to bring this up again team
I have an app that starts when the user doubleclicks on a text file. My app checks the Command() parameter to find out which text file was double clicked on, and is supposed to read that file to find out what records to display. However, the app can
[2005] Reading 1bit bmp pixel by pixel -
I'm trying to read a TI-89 image file that is in 1 bit B/W (so i think). I dont understand the file structure of this file and cant find information on the web concerning it. So i was trying to see if i can read the file 1 bit at a time, and construct it on the screen. That way i ca
[2005] String length problem -
I'm using VB.NET 2005 Express, and I am reading in the contents of a text file.
I have declared:
Dim strLine as String
I'm using the StreamReader to read the contents of the text file, and I'm putting the contents into strLine.
Unfortunately, it only seems to read in the firs
Help With File Save -
Hi There
I have a little application im building in visual basic 2005 express(visual studio 2005)
anyway, on the the application i have a read only text box and a button so you can copy all the text in the read only box. i have put a button in for saving it to a file, but i need
[2005] How to read a block of text line by line -
Hi,
I mainly process text files and if I need to run through the file twice, I'll open and read through the file twice, line by line, picking out the info I need.
I know this is inefficient. I was thinking of reading a text file line by line and putting each line into a List of S
[2005] Only read new lines in text file. -
Hi, i need some help with trying to read a log file that it constantly being updated by a server.
Example:
Server writes 10 lines to log file.
My application then read ONLY the ten new lines.
The reason i only want to read new lines since last read is that i want to transfer accr
[2005] Multiple apps read from same file -
Is it possible to have 3 different instances of the same application have a text file open for read only access?
Which type would do it? streamReader or?
[2005] How to connect to a server and read a log file -
I have to search for a text file located on C Drive of a different server and read the text file for lines of data
where there is a "File Error" message and copy the line.
Can some body help me with the code please? Thank you
Read from end of text file -
I need to monitor the log output of a system. The system appends a text file every second with new data. (to the end of the file)
i want to parse this file every second and read what is logged.
i cannot however modify the file, or even copy it because the other application keep
[2005]Read/Write to a text file -
I've created a simple Yahtzee clone and want to save the High Score to a text file. I can read/write to it no problem in debug mode if I put the file in the Debug folder. What I want to know is, how do I include this file in the Published version of the game? Even when I put a copy of
[2005] Read text file from web site -
Hi,
I am using VB2005
Can I read from my program a text file from a web site without to download the text file?
Thanks in advance
[2005] Reading through a text file -
How can I read through a text file and specify which line to read?
Thanks.. and sorry if I asked this already.. couldn't find my post. ( I don't think I did.. )
Replacing text in a file based on position -
What I am trying to accomplish is this in VB 2005:
Here is a sample of input data from a text file-
000000001111111122222233333333
000000001111111122222244444444
000000001111111122222255555555
What I would like to do is read 8 characters starting at position 23 and overwrite
[2005] Easy Help: Reading text files (can't find path) -
I'm a new VB programmer. I need some quick help (upcoming deadline) and Google and MSDN library is being a meany. I use VB 2005. Here's my problem, briefed:
I want to make an application in which the user clicks on a button and it will display text read from a text file. The text fi
[2005] Problem with paths -
Hello,
I'm having trouble streamreading a text file located on a network drive.
If I run the code in VWD2005, everything is ok.
If I run the code in I.E., or IIS, it has the following problems:
Path = K:\Text\File.txt
It can't find this file
Path = \\Server\Share\Text\File.tx
read, append to a text file -
Hello,
VS 2005
What is the best and most efficient method for reading from a text file. Storing it in a temporary file or variable, and then finally appending it to another file.
Its important the file that it is being appended to does not overwrite what is already in there.
[2008] Read txt file to textbox1 -
Anyways Im trying to find an easy way to parse or read text from a .txt file. I've found many examples but they all seem to be for vb6. I would like to have my program be able to read the text between two keywords in the text file and copy it to a textbox in the program.
I am able t
How to read character by character in text file -
Hi All. I need help on how to read character by character in a text file using vb 2005 and save each character in an array.
example data in the text file:
ABCD 1234
EFGH 5678
THANKS
[2005] List(Of String) in My.Settings and reading a text file line by line. -
My first Question, in My.Settings can i create a variable that acts in the way of List(Of String)? or can i only do that in classes/modules etc... Or is there similiar means? e.g. arrays etc... (but all done in My.Settings)
My Second Question, can i read a specified line of a text f
Opening a big file -
Hi,
I have a big text file with 60000 records in it.
Atleast 100 times per day, that file needs to be opened and a particular record is read. I have 2 options. I can store this file in a database table and read from the database or I can read from the text file itself. Can any
[2005] Reading an XML-File -
Hi all,
I have saved an dataset with some tables in an XML-File.
Now I would like to read the first row of the first column in one of the tables. I have read a lot of stuff about XML-Files and XPathNavigator in the online doc. Is there an easy way to read this value?
Thanks &a
[2005] How to Read Excel File -
Dear all,
Could anyone please advise me how & what is the best way to read an Excel File? (Excel version 2003 & 2007)
I need to write a program that read Excel file and get data from a specific Sheet (Row and Column).
Appreciate your help,
Regards,
[2005] Read and Write Text File -
How I can read from and write into the text file?
Thanks
Imran Ahmad Mughal
[2005] Editing and Passing a Text File in Memory -
I want to read in a text file, edit the rows of that text file, and pass that edited "document" in memory to another process without writing the text file and having the other process read in the edited text file. I know I could write the edited file to a string variable and
[2005]Help with reading data from a text file -
I am trying to get my visual basic program to read data from a text file.
The text file looks something like this:
1 2 3
1 a b c
2 d e f
3 g h i
The program has options that the user selects that Tell you the number that
[2005]Reading GP4 and GP3 files -
ok i want to make sort of a file manager for guitar pro tabs, the file types are gp3 and gp4. i want to just read the artist and title from the file. if i open up the file in wordpad i can see this info on the first couple of lines, but when i read the file into vb with stream reader,
Reading data from a text file -
I am writing a small program that parses data from a text file. The file is constantly updated with new data. Usually the updates are once every hour and this can clog up the text file. I have written a simple loop to parse through the old entries, but there are several bugs that are a
[2005] Read From Text, Ammend Text and Write Back -
Hi Guys
I have a .txt file and each line is a users name name i.e: Tamolia, Ruth
I need to read a specific line, remove or change the name and save it back to the file. Whats the best way? Here is my method:
1) Read the file into an array. Each line in the file is an array ele
[2005] Help with reading from a text file to a listbox -
I am a real noob when it comes to Visual Studio 2005 and VB.net. I have one form with two listboxes one named lstItems and the other lstBox2 and I need to read items from a text file into the first list box after clicking a button. Then have another button called btnSave that saves the
Best way to purge log file -
Hi,
I have a text log file which store the error occurs
in my application. Each error is a line in the log
file with this format:
<Date Time> <Error Code> <Error description>
I wish to purge the log file after certain period of
time for eg. KeepDays = 5 da
Close File Automatically If I Forgot To -
Hi, I am pretty new to VB.Net 2005, being a VB6 programmer. I am lost and have worked on this for several days, so I am hoping someone can help.
I read and write to a .btr (Btrieve) using the FileOpen, FileGet, FileClose... using a class to access the file. I can close the file fine
[2005] Mark File Reader... -
I want to read a file formatted in Mork format.. i need a program to read this.
Can someone please send one to me???
[2005] Append exe onto exe -
I want to read an exe and then add it onto the end of another exe.
I can append text from a text file but when I try and read the exe file it comes back with only 3 chars, I've tried a binaryreader/writer and a streamreader/writer and I can't get it to work.
Please help, thanks
How to Read and store the values of IIS Log file in SQL server -
Friends,
We have an IIS Log file. The file size of the Log file will be 2GB and above.
Now what i want to do is.
1. I have to read the IIS log file using SQL server either by query or by procedure.
2. Then i have to store the data inside the log file in the sql server table.
Read file like notepad -
Hi all,
I need to read the following file in vb .net: "C:\Windows\SoftwareDistribution\DataStore\DataStore.edb". It contains info about installed software updates. I've taken a look at the file by opening it with notepad. This isn't a plain-text file obviously, but I can f
text encryption/decryption -
I'm developing an application which will read information from a text file. There will be no writing to the file, just reading..
I don't want the end user to be able to read the information in the text file directly.. I had heard that it is possible to somehow decrypt the text and
RTF read/write Woes -
hi there,
this will be my first post here
i am trying to read/write an rtf file to/from a textbox control
however one thing i notice is when i read the rtf file along with the text certain other details which i think are the rtf encoding details are appended to the text and are di
[2005] How to read from .ini file -
Hello everyone..
i want to know how can i read information from .ini file in Windows Mobile 5/6 or 6.1
thanks in advance