I don't have a problem but I;m asking you something on the in VB.net.code. So in brief, this means that apart from 'Create', the 'Append' also create a file when it does not exist then?
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I try to find online any example for create an application autoupdate.
When I run my application it check in a webserver if exist new version,if exist the software run update.
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 want to test if a file exist and create it if necessary.Former I did it by testing folder and file then creating it.I want now to play with "try catch" exception handling, but it seems more heavy.I had to test the file twice..... Is there a cleaner way ?
Sub CheckLogFile()
Dim tempFolder$
'check MY_LOGFILE exist if not create it
[code]....
I have Requests for VB(2005) very very important for my selly project!i need a button that determine if file exist and if that file exist then show a messagebox!and if not show messagebox!.
View 2 RepliesI had a textbox and I could append strings to it.But now I create a string like this:
Dim str As String = New String("")
And I want to append to it other strings. But there is no function for doing so. What am I doing wrong?
I am converting a lot of projects from VB6 to VB.NET. Many of these projects use the DAO method CreateQueryDef, something ADO.NET does not. I know there is a way to replicate this method in ADOX using Catalogs, but I wanted to stay with pure ADO.NET. I have been using CREATE PROC to do this, but some of the query def's in the VB6 version mention tables/queries that are not created until later. For example,[code]The way the projects are, it is not possible to simply flip these two lines. I was wondering if there is a way to force CREATE PROC a AS SELECT FROM b even though b does not exist yet, or if there is a different option in ADO.NET to replicate the CreateQueryDef functionality.
View 1 RepliesWhen started my app connects to Access 07 DB and checks if Table has more than 1000 records.If so,it exports them to a CSV file and deletes them from the table.After some time,Table will again reach 1000+ record,and I will again need to export them.But,I do not want to create a new CSV file,but rather append to existing one.
View 2 Repliesi am using the below code to append to a xml file, it appends fine but i cannot work out how to wrap it in these elements <Contacts></Contacts> like this:
Quote:
<Contacts>
<Company>comapny</Company>[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
Dim tfLines() As String = System.IO.File.ReadAllLines(filename)
Dim objwriter As StreamWriter
objwriter = File.AppendText(filename)
[code]....
I want to write out to an xml document from a database which I can do but how do I append to it if it already exists?[code]
View 6 RepliesI have a file that contain data structure as below:
L,13206,11,02,06,000,3981.100
19,22,25,26,19
END
[Code]....
so how can i extract 1 and -18970.811,53728.643 and export it into a new output file with new structured as below: C 1 -18970.811 53728.643 For your information, the value for -18970.811,53728.643 will be placed after string K,1,P or K,2,P or any number between K and P...
One more thing is i want to append that new formatted data into old ready file that already contain old data... new formatted data will be append to the top of the old file..
[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 RepliesI want to write a byte array to the end of an existing file. How to append byte array to file?
View 4 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'm trying to make my application append to a simple log file when it executed and when it's closed. So far, so good (see code)
However, what I would like to do, is have future lines of text to be written on the next line instead of the same line. And possibly a date stamp.
I'm not quite sure how to implement this as far as syntax goes.
My.Computer.FileSystem.WriteAllText("C:log.txt", "Application was closed ", True)
I am providing 3-4 dropdowns on page load by If (IsPostBack <> True) Then ' Populate dropdown textfields from the database End If Say "ddlFiles" is one of the dropdowns containing filenames as "file1", "file2" and so on. Now when the user selects say "file2", I want to download file2.
[Code]...
find a way to check if a file exist before opening it or creating it.I know how to open a file for output or input or even append which is what is going to do assuming it exist already.
'all this is inside a button which will open the file upon pressed
'to populate a
'combo box drop down list[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]....
How would i read a set of names out of a file and then append them to a list box?I am not guaranteed a pair will be on the same line, and not guaranteed that a line would contain a maximum of one pair(i.e., it might have three pairs or it might have one and a half pairs - a first name, last name, and another first name whose matching last name would be on the next line). A line may also be blank.All of this needs to be in a visual basic format.
View 1 RepliesI 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.
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.
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'm trying to get my program to append a child to one of my parent nodes in an XML file. I have looked online for quite some time trying to determine the best way possible, and have come up with the following
[Code]...
I'm having some problem here. I have a list of files to read and have to append them all to one unique file. the problem is that when i open the first file to read. I read the first line and discard it. when i read the second line, its empty ! but it is not in the original file. what im doing wrong ?
[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 have a txt file in my web server. Now i want to append some text to that file in every one minute. What will be the code for it.
View 5 RepliesWhat code would I use to accommodate isolated storage mechanisms on a Windows XP machine to place log files? I can't find my previous code but I believe the IsolatedStorageFile class wanted to place the file in C:Documents and SettingsAll UsersApplication DataLogFileNameToWriteToIsolatedStorage.txt'The problem is that on two XP machines where this has been employed, the ApplicationData folder does not exist.Was I maybe using System.IO.Path.GetTempPath();
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