i'm writing an application where error messages are written into a text file.
text file is created using win32API createfile() function.
after that everytime an error occurs the message is written into the text file with writefile() API.
but whenever a new message is written the old text in the file is getting overwritten.
i want to append the new message at the end of the text already in the file.
I have text file to read. If i find a line "T001" then i must add specific text beside that line. With my code now it write the specific text at the end of the file not beside the line "T001" This is my code so far
Dim filename As String = strFileName
Dim tfLines() As String = System.IO.File.ReadAllLines(filename)
Dim objwriter As StreamWriter
objwriter = File.AppendText(filename)
[code]....
[code]...
When I run this I get the file is currently in use.
This question is a little more in depth than the typical append and save. I'm needing to append multiple controls text to 1 file. Basically what I have is:User inputs name in TextBox1 User inputs Service Type from selected list in ComboBox1 User checks of any or all CheckedListBox fields that apply. Now, all together, there are actually between 4 to 6 different checkedlistboxes.What I am wanting to do is when the user clicks the Submit button (Button1), at the bottom, it will write a text file of TextBox1.Text,omboBox1.SelectedItem.ToString, and all the checkedlistbox items.Now there is a small thing I may have to start another question on. For every checked item in a checked list box, I would like to writ
View 1 Repliesmy app will be parsing an array of data and generating text strings (of around 80 chars each), which I then want to append to a text file. What is the best (fastest) way to do the file appends? file size will be up to 40K lines.
View 2 RepliesI have a program, which writes data to a text file in the following format.
test1 - test1 - test1 - test1
After writing the first line, the text fields are cleared to make space for another round of user input. Simply said, this is how it should look[code]....
I want to append a text file with items from a listbox. I tried to search for a code to do that, but couldn't find anything(most likely I don't know what I am looking for). But I wrote this code and got it to work, but after looking at the code, it looks sloppy and I'm sure could have bugs I didn't catch....my question is, is there a better code than the one I made, or will my code work fine. I am eager to write code correctly, not just get the code to work.
Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
Dim save As New SaveFileDialog
save.ShowDialog()
Dim saveFile As String = save.FileName
[code]....
I am trying to create a textfile if it doesn't exist or append text to it if exists in vb.net.
For some reason, though it is creating the text file I am getting error saying process cannot access file.
And when I run the program it is writing text but how can I make it write in new line.
Dim strFile As String = "C:ErrorLog_" & DateTime.Today.ToString("dd-MMM-yyyy") & ".txt"[code]...
I am trying to append a new line to a text file. Sometimes it posts to a new line (like I want it to) and sometimes it appends to the current line, consequently screwing up my read. I even put VbNewLine in the code.
Here is the snippet:
Dim outputline2 As String
outputline2 = equip & "," & value
Dim myfile2 = File.AppendText("equiped.txt")
myfile2.WriteLine(outputline2, vbNewLine)
myfile2.Close()
[URL]
Below is the code which I am using to append data to a text file.
Dim FILE_NAME As String = "C:cebsample.txt"
Dim objWriter As New System.IO.StreamWriter(FILE_NAME, True)
Dim record As String
Dim amount As Integer
Dim amt As Decimal
[Code] ....
Now I would like to save that updated file with another name.
With the following code I can import comma delimited data from a text file into Excel.The problem is that I cannot seem to figure out how to append the data from the text file to an existing Excel file. (adding to a new row each time.)
With objExcel
.Visible = True
.Workbooks.OpenText(Filename:="c:scripts1New Text Document.txt", StartRow:=1, Tab:=True,
[code].....
With the following code I can import comma delimited data from a text file into Excel.The problem is that I cannot seem to figure out how to append the data from the text file to an existing Excel file. (adding to a new row each time.)
With objExcel
.Visible = True
.Workbooks.OpenText(Filename:="c:scripts1New Text Document.txt", StartRow:=1, Tab:=True,
[code].....
i need the following line to write START http:// in vba however it wont write ithe http:// part to the pgp (text based) file whats the trick for this?
objWriter.WriteLine((TextBox5.Text) + "," + " " + "START http://" + (TextBox6.Text)
This is the rest of the code if nesesary:
Public Class Form1
[code].....
I'm using this script to add text to a variety of .txt's on the fly: Const ForAppending = 8
[Code]...
So I'm sending text with the program launchy this .vbs (addln.vbs) - ("$$" c:ideas.txt) is what the argument is if I want to send to ideas.txt for example All I want to do is make it so I get the date and time right before whatever text I send to this text file. I don't think this would be too complicated.
I have files in a folder which i need to append and produce a single textfile.
1)I first select the folder using FolderBrowserDialog and write the path in the textbox.
2)By the click of a button I want to append all the files contained in that folder and write it in the same folder with the name of the textfile as new.txt
[code]This code open the FolderBrowserDialog and selects the folder and writes the path in the TextBox1..I need help to proceed with appending the text files within that folder
I want to read the text file and check whether its contain the specific string or not at the end of the text file. If it doesn't contain the specific string, I want to append the text file to write the specific string.. Can I use this code? But its not working..What is the problem actually?
Dim line As String = ""
Dim fileName As String = "C:\Drill Blind.txt"
Dim sr As StreamReader = New StreamReader(fileName)
[code]....
I have text file to read. If i find a line "T001" then i must add specific text beside that line. With my code now it write the specific text at the end of the file not beside the line "T001" This is my code so far Dim filename As String = strFileName
[Code]...
What is the code to open a text file and append data to it, in visual basic express edition?Normally one would write:open "data.txt" for append as #1 but visual basic express does not accept it.
View 14 RepliesDim filesave As System.IO.StreamWriter[code]...
The above code works fine, but the problem is it overwrites the Quiz0.txt file's text. I want it to append the (";" & TbxOutput.Text & ";" & answrstrng) thing to what is already written in the Quiz0.txt file so that I can use the button (which runs this code) multiple times to add to the Quiz0.txt file.
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'm trying to use XML more often in my apps, but somhow I just can't get it. Examples on the "net" are somehow unclear to me.
[Code]....
I am using a dataset control on a form to store and read data from XML files. So far I use the following to write info.
VB
Dim drow As Data.DataRow = DataSet1.Tables("item").NewRow
drow("path") = strFilePath
drow("id") = strCreationDate
[Code]..
The problem is I need to APPEND data to the same file. What I do now results in the same file being overwritten. I am dealing with large amounts of data, so I would love a way to append to the file without the need to re-read it with each save.code lines 1-4 are in a loop so that at one time, they add a few hundred rows to the DataSet. After that loop is when the save takes place. However, I want to run that loop again and again every so often to update that same 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 was scripting a very basic process manager, with a ListView component, and it was working fine for many days, up until now.Here is the code for getting processes:
Dim Process As New Process()
Dim Count As Integer = 0
ListView1.Items.Clear()[code].....
The line of code where I put "*WIN32 EXCEPTION LINE* keeps running into an error(Win32 Exception was unhandled; Access is denied). Here is the full error description:
System.ComponentModel.Win32Exception was unhandled
ErrorCode=-2147467259
Message=Access is denied[code]....
As I said before, this had been working for several days, up until now.
I 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
Is there a .net namespace or similar/simpler way to get text from windows and child classes (controls) other than using a Win32 API messages?I think there is a way to get the handle of the active window in .net without WinAPI. Anyone know what namespace/class does that?
View 1 RepliesI'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 Replies