Clear A Textfile Without Deleting File?
Oct 18, 2010Question: I have an ini file which I need to clear before I add info to it.Unfortunately, if I just delete the file, the permissions are gone as well.
View 4 RepliesQuestion: I have an ini file which I need to clear before I add info to it.Unfortunately, if I just delete the file, the permissions are gone as well.
View 4 RepliesI have a textfile with timestamps and the amount of minutes my machine has run.
To keep the size of the file in check, I would like to delete the first half of the text file, once the textfile exceeds 1 MB... I have a check in place to determine the file size.
What is the best way to go about deleting the first half of my textfile log?
Do you recommend storing the second half in a temp file, and transfering it to the original log?
Is there a simple way to remove the first few lines of a textfile?
I am using the StreamWriter to create a log file for my application. However I do not see a method on how to clear the file (make the file blank again). Also before I clear the file I want to rename it so that I can have multiple log files, a new one produced everytime the application runs.
[Code]...
I am trying to create a textfile and write some lines into the textfile. However, the code that i am using can only write when the textfile is already created in the directory.
For this case, can i actually allow my script to search if a textfile is being created, if not create a textfile ???
Dim pathdir As String = "C:workingdir est.txt"
If System.IO.File.Exists(pathdir) = True Then
Dim objWriter As New StreamWriter(pathdir)
[code].....
I am creating a program that allows a person to enter details about their farm, stock, and machinery in order to electronically keep track of all of the information. I have created the forms and done all the coding for the data entry, and now what I would like to do is allow the user to delete a single record from the .dat file. I am able to delete it from the LstBox (using a "Delete Entry" btn coded simply with
lstvehicles.Items.RemoveAt(lstvehicles.SelectedIndex)
(using the vehicles section for examples)), but I am unsure of how to delete it from the .dat file as well, to prevent it reloading upon data change / program reload. Also I would like to be able to have a reminder come up on the program start up that gives a reminder to (in the vehicles instance)when a vehicles rego is due, the date being associated to a date that is entered into the same lstbox data using a datetimepicker.
i just want to ask how can i save the file location or directory of a file in mysql without deleting its slashes...i tried to save it directly.. for example: the original directory is c:folderimg.jpg and when i checked it on mysql it is save as c:folderimg.jpg
View 5 RepliesI know that Deleting a specific line in a sequential text file is impossible but instead copy the needed lines and not copying the unneeded ones to an output file .. killing the old one and renaming the new one with the same.. I can't make this step...
That is my record file
Code:
Input #1, CustomerName, CustomerHomeAddress, CustomerBussAddress, CustomerTel1, CustomerMob1, CustomerID, DateRent, CarRegPin
Code:
"Josek Sam","68 West Land Street","149 Union of States","4524563","45635463","JOSKSAM1",#2009-03-02#,"MILANCGLZ2008"
"Josef Malm","142 Unions Street","64 Hamersters Street","452504","42542054","JOSFMALM2",#2009-03-06#,"MILANCGLZ2008"
"Dave Green","131 Oxford Street","96 BlueBane Route","452542452","43254345","DAVGRN3",#2009-03-07#,"MILANCGLZ2008"
I made a form that when you put your CustomerID in Text3 Box.. it access the records and make some calculations. now.. The customer will return the car.. Then his data should be deleted.. I want to know how to make that when I enter the CustomerID and press on the Command button .. It copies the other lines to a new output folder and doesn't copy these ... So it appears to be deleted using this way..
I write one line of text to a file and when I looked into the file I see three chars which I did not write
View 1 RepliesMy office BA requested me to develop Window application to retrieve all the files from the SalesDepartment folder : F:SalesDept and write the name of the file into a TextFile and save it into this folder F:StoreFileName
I have not written this type of coding before and I need your help to show me sample coding in order for me to learn something new.
this is currently my code to clear my 5 textboxes
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
TextBox1.Clear()
TextBox2.Clear()
TextBox3.Clear()
TextBox4.Clear()
TextBox5.Clear()
End Sub
I've setup a TextWriterTraceListener which outputs the debug messages I've written to a file.This works fine however what I am trying to do know is output the content of this file to a textbox using a streamreader object.I originaly thought it may because I did not set the text file to allow read/write access so I changed this by setting the following:[code]
View 4 Repliesi know i have to use a loop to get each line of the textbox onto a newline of a textfile but i dont know how to figure out how many lines of text the user has entered into a textbox. I tryed using a try statment to loop until it errors, it seems to work sometimes but other times it only takes half of the textbox and adds it to the textfile. And if atmaweapon reads this, i tryed to make better names for variables. Here is my code,
Code:
Path = ("Meals" & ComboBox1.SelectedItem & "" & TextBox1.Text & ".txt")
File = New System.IO.StreamWriter(Path)
If ComboBox2.SelectedItem = "1" Then
[Code]....
how many line of text there are... im not so shure how good it is to run a loop tell it errors for a textfile, but its the only way i could think of.
I have a txt file, that i want to read into my program. The problem is this:The textfile is a stats file for a game and looks like this:
Code:
ip:port wins username points
ip:port wins username points
ip:port wins username points
ip:port wins username points
ip:port wins username points
etc.
The main thing i want to do is sort these things out and then add to mysql database table that would have these columns:
Code:
ip authid wins username points
So what i wanna do is splitting this textfile data up and then adding everything to a mysql table.
im using an open file dialog ot add files to my program, im using the code ISO_FILES.Text = ISO_PICKER.FileName //FYI Iso_Files = TextBox & IsoPicker = openfile dialog but this wont just add the file name it will ad the folder path and the file extention,
View 3 RepliesI have a bar cash register and have buttons for the drinks and number pad. In the program I have it working and it is reading the File and storing it in a Array. the problem i have is writing back to the part of the textfile. Here is 2 of the drinks buttons, all the rest of the drinks are the same.
[Code]...
I have written an import routine, that imports a textfile into a database table, using a schema.ini.In the input file, 3 fields are seperated, that should be concatenated in the import-routine. Does anyone know how I can make that happen...Small part of the import-routine, first lines are the last lines of the programatically created schema.ini.
Code:
PrintLine(intFile, "Col11=mededelingen1 Text")
PrintLine(intFile, "Col12=mededelingen2 Text")
[code].....
I have a timer that runs every time by itself, and for the code the runs in it I would like to have it clear the dataset before it does anything, the timer runs every 10 seconds, so I tried to do dataset.clear but it would crash if the dataset had no values
View 4 RepliesMay I know how to write a code that can delete a particular file in the recycle bin?I found this codeIf System.IO.Directory.exists(PATH) then _System.io.directory.delete(PATH, true)but the deleted files in the recycle bin don't have a path, do they?
View 1 RepliesI need to delete/clear all data from an existing csv file from Visual Basic. This seems really simple but I have had a lot of problems making it happen!
View 1 RepliesI need to delete some rows from csv file based on a column value. Here is my sample.csv file [code]In my vb.net winforom application, I have to read this file and need to delete the rows related to 06/06/10 date column values then write the remaining rows into new.csv file. So far my program works on reading whole data present in the file.[code]
View 2 Repliesi am creating a console app that will delete pictures from a directory every 30 minutes. Problem is that its being populated by files every minute or so. So if i go and delete files in that directory then it may cause an error trying to delete a file thats being created just then or opened.
I currently have this code to copy the files to another directory and then delete them from the source directory.Dim f() As String = Directory.GetFiles(sourceDir)
[Code]...
at System.IO.__Error.WinIOError(Int32errorCode, String maybeFullPath) at
System.IO.File.Delete(String path)
at
[code]....
i've tried to make it so Button5 Deletes what TextBox1 says I know its
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
If File.Exists("FILE.TXT") Then
File.Delete("FILE.TXT")
[code]....
But I want it to find and delete what TextBox1 Says.
I have an aspx page in VB that fills a pdf with data from a web form.I'm using iTextSharp for this and I have no problem with this.This is the second time I've created anything for pdf's and I'm using the code from the first script.The first script wrote the filled in pdf to a directory on the server where one person could access those via another aspx page. I wrote that code probably a year ago.Now, instead of having the filled in pdf sit on the sever, I have to email it, which I was successful at doing.The only issue left is to delete the filled in pdf from the directory.I tried to use file.delete(), but I got an error stating the the file was being used by another process.how to stop the process in order to be able to delete the file.[code]
View 3 RepliesI have been searching trying to figure out the syntax for this but it escapes me.I am adding records saving and retrieving no proble but how do I delete a record.So far all I have seen in the Database using msAccess is the record marked #DELETED but is not really deleted. Here is my code.
View 7 RepliesI'm trying to delete a file in the FormClosed method, but I get an error saying it's in use by another process. At this point in my program it's not needed anymore. Is there any way to take control of it and delete it, or is there a better method to try to delete it in?
View 8 RepliesI have the following xml file output below where Deleteme="true" is written when the user clicks on the row's checkbox. I was thinking that once the data is flagged this way I could read the data back in, somehow delete each row specified as above, and then save the data back out.
[Code]...
i've made a playlist system. It writes all the music file url's to a file separated by a comma. But I want to have a delete button that removed one of the playlist items.
This is what I've tried:
Dim EntireFile
Dim myReader As New System.IO.StreamReader(playlist, System.Text.Encoding.Default)
EntireFile = myReader.ReadToEnd()
[Code]....
The program first creates a file and use it but then I want that file to be deleted and I'm using the command as follows[code]...
View 1 RepliesI have written a conversion (vb6) tool that migrates data (SQL 2008) from one database to another and I make some temporary files (.bak files)I would like to delete after the conversion finishes. The application will not be running on the SQL Server so I need to remotely delete the files. Is there a way to delete a file remotely without having to use an administrative share or the xcmd in SQL Server?
View 2 Replies