This is what I've got so far.I'm needing to access a data table on the server (tblStateCodes), loop through each line and write the contents to a local file (text or CSV).I've trolled the internet but it seems that there are many different examples which have confused me even more.
Imports System.Data.SqlClient
Imports System
Imports System.IO[code].....
write each row of a datatable to textfile? I do not need to select any specific columns.
View 8 RepliesI'm looking at an old web app I wrote and it is taking about an hour to read 4500 records from a DataTable so it can write them to a CSV file.
The DataTable contains... 376 columns
At least, I think that's what Excel's NL column converts to. I just looked up the column count now and had no idea there were so many. Our software vendor hasn't realized the value of dynamic sql statements for this process, so every software "upgrade" just keeps adding more columns rather than only selecting the ones needed. I cannot alter the SQL statement that generates the data
Depending on the data type, the data needs to be formatted in a specific format Data does contains special characters, such as commas The slow part is reading the data. Getting the data from the SQL server and writing it to a CSV is fast.
Here's the code. Forgive the mess, I wrote it back when I didn't know what I was doing and when I still was working in VB
Function ReadDataTableForCSV(dt as DataTable)
Dim sb = New StringBuilder()
Dim dataTypes As New Dictionary(Of String, Integer)
[code]....
I have a trouble making this code work. When executed, it just creates a correct (with the correct name) file with the extension .txt but the the actual text inside .
Imports System.IO
Public Class Form1
Public mytext As String
[code]...
The strange thing is that while debugging, h, t string variables have the correct values, but somehow mystream.write(t) doesnt work (it doesent write anything to my h.txt text file...
I am trying to ping a text file("C:/Domains.txt") which is a list of domains, then have the resulting IP address written to a different text file ("C:/IP_Addresses.txt"). And this action will be done with a Button_Click.
View 8 RepliesI have a very large text file about 4 million lines that I would like to separate into several small text files based on the strings contained in the first column of the text file. I want to open the large text file, choose the lines that apply, create a new text file with a name that has a number at the end of which will match up with the value in the first column of the text file. I want to then copy the applicable lines to the new small text file, save and close it. I'm not sure how to go about doing this after opening the large text file and using the readline method. What if the folder does not exist? Do we have to create it? I want this procedure to be general, as there could be up to 25 million lines in the text file.
View 13 RepliesI'm trying to read a text file that contains info like this:
ACX-101-011 , J2168
BTXR-130A-013, D6733
AJ4-233-614, T8211
I want to split each line at the comma and write the left side to a textbox and the the right side to another textbox. I'm close, with the code below, but I can only post results from the first line in the file. How do I loop this and append the text results in each of the textboxes.
Dim TempFile As String
TempFile = "temp.txt"
Dim sw As StreamWriter
[Code].....
Is it Possible for me to read text from textbox control and write it to .txt file at specific location.
for an instance.... say below with quote is my Text in .txt file:
"THE QUICK BROWN FOX JUMP OVER THE LAZY DOG"
and with programming code I want to change some text in the same sentance become....(see below)
"THE QUICK GREY FOX JUMP OVER THE LAZY CAT"
so you can see the word BROWN change to GREY and word DOG change to CAT
I want to load a csv file (A comma delimited text file) into a datatable. I found the OdbcDataAdapter Class which looks perfect, but it says it is supported only in version 1.1 of the .NET Framework.
Is there a better way to import a csv file into a datatable? the first line has the column headers.
I am using Visual Studio 2008, using version 3.5 of the .NET framework
I've been developing a arcade game, and as every good arcade game, it has an incorporated scoreboard so that players can see who scored better. My problem is that everytime it enters a new scoreline, it deletes all the previous lines in the text file. The code I've been using is the following:
If player1 > 25 Then
objReader.Close()
MsgBox("O " + jogador1 + " ganhou.")[code]............
I've got a program which displays data in a listbox in five columns. All are separated using one or more ControlChars.Tab. I want to write these columns to a text file, however, when I do, my columns lose their alignment. I can change alignment so that it displays nicely in text file, but then it is off in list box. Is there a way to get what I see in my listbox to display the same way in a text file - maybe a different way of separating my columns (not using ControlChars.Tab)?
View 7 Repliesits noobish question but i didnt find any solution for it here is my problem : i want to write bites from 2 seprated file (1.txt + 2.txt) into 1 single file(3.txt) but i cant
[Code]...
I can not fiend any write functions to a text file or to a other file in Windows Direction
I want a simple write function for a button when click button it will write some lines to a file
I already have a DataTable containing all the data needed. I just need to export it to a text file.
how to export DataTable to text file. the fastest and efficient way..
I am using Visual Studio 2008 on Windows XP SP3. User has Windows 7 Pro (32 bit). The IO code below works for me. The read code works for user, but the write code only works for new files. If the user tries to overwrite a current data file, then no data is written to disk. I have done all the usual IO checking (valid file name, etc.) and have excluded it from my same code. In my app, FileSave and FileSaveAs both call WriteDataFile(FullFileName). Any reasons why FIleSave would work on Windows XP, but not on Windows 7 Pro (32 bit)?
Code:
Public Function ReadDataFile(ByVal FullFileName As String) As Integer
' reads a Data file from disk
'
' Format is a text file, with [TAB] seperators and [CR][LF] as line terminators
[code]...
I have a text file and I want to take the data from the text file and write each line into the excel file (into the same column). How do I accomplish this? I know how to read data from a text file, but I don't know how to insert the data to a excel file..
View 5 Replies[code]I just want it to change item format in listbox (IP: 0.0000.0000.000 PORT: 8080 to 0.0000.0000.000:8080) and write that line to a text file located on desktop!
View 2 RepliesI want to import a text file(with comm separator)to sql express 2005 database using visual studio 2008
View 14 RepliesI am trying to write to a text file....which is fine but thers a but!I want to output date so it is all aligned for example
Name Age
John Smith 35
Danielle Johnston 37
As you can see the above data is not aligned!! VBTab doesn't work as depending on the length of the name the file looks like above I want the text file to look like
Name Age
John Smith 35
Danielle Johnston 37
so everything is aligned!
How can I write a string to a file without having to call on stream reader?Well, If it is not worth it, it is not fun - you say programmers are boring but i say they are worth it.
View 1 RepliesI added a Text File into my project using Project>Add new Item. How would I write text to that file?
View 1 RepliesHow can i write text to the end of a text file?
I mean instead of creating a new file each time my app run ,i want to add text to the end of that text file.
I would like to write a string to a text file I have created on the C: drive. I want to get the string from the .text value of a control and save it to the text file. I have 8 different strings I want to save using a click event. I then want to be able to read the text file and write the values back to the control. I am doing this to make information the operator has entered retentive, in case of a PC shut down.
View 12 RepliesI want to write the user input data to the text file. I want it to be in same line like this
G1 Z1. F80.
If i use my coding like this is not working[code]...
I have a data table that has thousands of entries. The table has employee production information: YearMonth, Employee ID, Pages worked and Jobtypes (e,k,o and r). I need to calculate a sum of each jobtype and a sum of pages worked for each jobtype, for each individual employee. I am pulling this data from an Access database and so unfortunately I am unable to use LINQ.[code]...
View 4 RepliesI Am making a Soccer League tabel with player names.With All the Names:The first Digit is either T(for Team) or G(for Goal).
[Code]...
I want to create a text file and write some text into this file, but my code cannot create the text file.
Error message:
UnauthorizedAccessExcepion was unhandled by user code Access to the path 'c:save.txt' is denied.
My code:
Dim fileLoc As String = "c:save.txt"
Dim fs As FileStream = Nothing
If (Not File.Exists(fileLoc)) Then
[code]....
I'm creating a small vb.net application, and I'm trying trying to write a list of results from a listview to a text file. I've looked online and found the code to open the save file dialog and write the text file. When I click save on the save file dialog, I receive an IOException with the message "The process cannot access the file 'C: hethe.txt' because it is being used by another process." The text file is created in the correct location, but is empty. The application quits at this line "Dim fs As New FileStream(saveFileDialog1.FileName, FileMode.OpenOrCreate, FileAccess.Write)"
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim myStream As Stream
[Code]....
[code].....
View 2 Repliesencountering a problem when trying to write data to a text file. If I put the output into a messagebox I can see it, but when I attempt to write it to a file it is just blank. What am I missing here? EDIT - This is just a simple winform that I specify a path to a local HTML file in Textbox1 and I'm attempting to parse some HREF tag data.
Imports System.IO
Imports System.Text.RegularExpressions
Public Class Form1
[code]....