Run following code and see that you have text file on the desktop named MyLogFile 08.04.2017
Dim Log As System.IO.StreamWriter
Log = My.Computer.FileSystem.OpenTextFileWriter(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) & "\MyLogFile " & System.DateTime.Now.Date.ToString("dd/MM/yyyy") & ".txt", False)
Log.WriteLine("Hello")
Log.Close()
I had wanted to change file name from MyLogFile 08.04.2017 to MyLogFile 08.04.2017 07:50:59 but it is not possible because : is not allowed.
Now, I want to change file name from MyLogFile 08.04.2017 to MyLogFile 08.04.2017 07.50.59 thanks to your support.
I would strongly recommend that, when including dates and time in file and folder names, that you go from most significant to least significant. The reason for that is that then alphabetical and chronological order will match. Personally, I don't use separators at all so that would be:
Log = My.Computer.FileSystem.OpenTextFileWriter(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop),
String.Format("MyLogFile.{0:yyyyMMddHHmmss}.txt",
Date.Now),
False)
If you really want to do it your way then it would be:
Log = My.Computer.FileSystem.OpenTextFileWriter(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop),
String.Format("MyLogFile {0:dd.MM.yyyy HH.mm.ss}.txt",
Date.Now),
False)
You simply change the format specifier as needed.
You could do:
Dim Folder As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
Dim FileName As String = "MyLogFile " & DateTime.Now.ToString("dd.MM.yyyy HH.mm.ss") & ".txt"
Dim Log As System.IO.StreamWriter
Log = My.Computer.FileSystem.OpenTextFileWriter(System.IO.Path.Combine(Folder, FileName), False)
Log.WriteLine("Hello")
Log.Close()
Related
I'm running into issues trying to pull info from files stored in Sharepoint.
Namely, FileExists isn't working and Overwrite file doesn't seem to be working either.
There was a discussion here, but few answers -> posting this question again in hopes some things have changed
My code runs like this:
strFileExists = Dir(Filepath & Filename)
And returns: File path not found -> I checked the path and even opened a file and recorded the macro to make sure it was the same file path without issue, but it appears DIR() is the issue.
The business dept I'm working with is entirely switching over to Sharepoint so hoping there's a straightforward solution without setting up network shares or doing C/personal/OneDrive things
You can navigate and look for files on OneDrive like this
Sub check_File_Exists()
Dim path As String
Dim strType As String
Dim file As Variant
Dim yourFile As String
'replace uname with your user name
path = "C:\Users\uname\OneDrive\"
strType = "*txt"
yourFile = "test.txt"
file = Dir(path & strType)
Do While (file <> "")
If file = yourFile Then
Debug.Print ("File: " & file & " found!")
Exit Do
End If
file = Dir
Loop
End Sub
Hope it helps
I am running Access 2016. I am trying to export the results of a query into a text file, I keep on getting an error 3625 no spec is found. I created the spec and if I run the spec it works as expected. I tried putting quotes instead of the export spec, but there was no formatting on the file. The solutions I found on the web were saying to use the advanced tab to define formatting, On my version of Access 2016 there is no advanced tab in the spec creation process. I have stepped through the process and all the directories and the file name is created properly.
The error occurs on the line :
DoCmd.TransferText TransferType:=acExportDelim, SpecificationName:=strExportSpec, TableName:=strQueryName, FileName:=strFullName, HasFieldNames:=True
Any help is appreciated.
Private Sub Export_Click()
Dim strFileName As String
Dim lFileName As Long
Dim strCurrentDate As String
Dim strFormattedDate As String
Dim dtCurrentDate As Date
Dim strDir As String
Dim strFullName As String
Dim strExportSpec As String
Dim strQueryName As String
Dim strYear As String
Dim strMonth As String
Dim strPath1 As String
Dim strPath2 As String
strYear = Format(Date, "yyyy")
strMonth = Format(Date, "mm")
'Check if Directory Year exists
strPath1 = "C:\Users\Owner\Google Drive\Employment\Mass Unemployment\" & strYear
'Check if year exists
If Dir(strPath1, vbDirectory) = "" Then
MkDir strPath1
End If
'Create
strPath2 = "C:\Users\Owner\Google Drive\Employment\Mass Unemployment\" & strYear & "\" & strMonth & "\"
If Dir(strPath2, vbDirectory) = "" Then
MkDir strPath2
End If
strCurrentDate = Date
strFormattedDate = Format(strCurrentDate, "mmddyyyy")
lFileName = InputBox("Enter Week Number", "Enter Week Number")
strFileName = strFormattedDate
strFullName = strPath2 & strFileName & ".txt"
strExportSpec = "Export_Spec" ' error 3625 export spec does not exist
strQueryName = "qryUnEmployment"
DoCmd.TransferText TransferType:=acExportDelim, SpecificationName:=strExportSpec, TableName:=strQueryName, FileName:=strFullName, HasFieldNames:=True
End Sub
I believe what Parfait is telling you is that the Saved Import/Saved Exports are far different than an Import/Export Specification. You are trying to put a Saved Export into the TransferText parameter where a Specification is called for. You likely did an export at some point and saved the steps as a Saved Export.
If you're truly interested in using a specification for this export then you will want to create one by walking through the import of an already existing text file in the format you would like. See Parfait answer above.
Otherwise, just leave the specification parameter blank and the query will be exported.
The Save Import/Export GUI frontend feature and the backend method, DoCmd.TransferText refer to different specification types. The former is more a saved routine as a convenience method to retrieve the same named text, spreadsheet, or XML file and all the steps to import or export the external data and avoid the walk through of wizard in future runs.
However, the latter is specific to formatting of any text file and it is usually created during the text file wizard under Advanced button. See screenshot below. In this dialog you can specify formats for each field, delimiters, etc. and then either run the specification one time or Save As... for future uses on any text file. In fact, Specs... shows a current list of all saved named specifications. It is here where you can find the name to use in DoCmd.TransferText.
Import Text Wizard
Export Text Wizard
To date, there may not be any other GUI way to adjust these saved specifications. They are stored in system tables, MSysIMEXspecs and MSysIMEXColumns. Again, do not confuse above text file specific method for the generalized external data methods: ImportExportSpecifications and DoCmd.RunSavedImportExport.
how do I add a path to a code where "HERE_HAS_TO_BE_A_PATH" is. When I do, Im getting an error message. The goal is to be able to specific the path where is the final text file saved.
Thanks!
Here is a code:
Dim newFile As IO.StreamWriter = IO.File.CreateText("HERE_HAS_TO_BE_A_PATH")
Dim fix As String
fix = My.Computer.FileSystem.ReadAllText("C:\test.txt")
fix = Replace(fix, ",", ".")
My.Computer.FileSystem.WriteAllText("C:\test.txt", fix, False)
Dim query = From data In IO.File.ReadAllLines("C:\test.txt")
Let name As String = data.Split(" ")(0)
Let x As Decimal = data.Split(" ")(1)
Let y As Decimal = data.Split(" ")(2)
Let z As Decimal = data.Split(" ")(3)
Select name & " " & x & "," & y & "," & z
For i As Integer = 0 To query.Count - 1
newFile.WriteLine(query(i))
Next
newFile.Close()
1) Use a literal string:
The easiest way is replacing "HERE_HAS_TO_BE_A_PATH" with the literal path to desired output target, so overwriting it with "C:\output.txt":
Dim newFile As IO.StreamWriter = IO.File.CreateText("C:\output.txt")
2) Check permissions and read/write file references are correct:
There's a few reasons why you might be having difficulties, if you're trying to read and write into the root C:\ directory you might be having permissions issues.
Also, go line by line to make sure that the input and output files are correct every time you are using one or the other.
3) Make sure the implicit path is correct for non-fully qualified paths:
Next, when you test run the program, it's not actually in the same folder as the project folder, in case you're using a relative path, it's in a subfolder "\bin\debug", so for a project named [ProjectName], it compiles into this folder by default:
C:\path\to\[ProjectName]\bin\Debug\Program.exe
In other words, if you are trying to type in a path name as a string to save the file to and you don't specify the full path name starting from the C:\ drive, like "output.txt" instead of "C:\output.txt", it's saving it here:
C:\path\to\[ProjectName]\bin\Debug\output.txt
To find out exactly what paths it's defaulting to, in .Net Framework you can check against these:
Application.ExecutablePath
Application.StartupPath
4) Get user input via SaveFileDialogue
In addition to a literal string ("C:\output.txt") if you want the user to provide input, since it looks like you're using .Net Framework (as opposed to .Net Core, etc.), the easiest way to set a file name to use in your program is using the built-in SaveFileDialogue object in System.Windows.Forms (like you see whenever you try to save a file with most programs), you can do so really quickly like so:
Dim SFD As New SaveFileDialog
SFD.Filter = "Text Files|*.txt"
SFD.ShowDialog()
' For reuse, storing file path to string
Dim myFilePath As String = SFD.FileName
Dim newFile As IO.StreamWriter = IO.File.CreateText(myFilePath) ' path var
' Do the rest of your code here
newFile.Close()
5) Get user input via console
In case you ever want to get a path in .Net Core, i.e. with a console, the Main process by default accepts a String array called args(), here's a different version that lets the user add a path as the first parameter when running the program, or if one is not provided it asks the user for input:
Console.WriteLine("Hello World!")
Dim myFilePath = ""
If args.Length > 0 Then
myFilePath = args(0)
End If
If myFilePath = "" Then
Console.WriteLine("No file name provided, please input file name:")
While (myFilePath = "")
Console.Write("File and Path: ")
myFilePath = Console.ReadLine()
End While
End If
Dim newFile As IO.StreamWriter = IO.File.CreateText(myFilePath) ' path var
' Do the rest of your code here
newFile.Close()
6) Best practices: Close & Dispose vs. Using Blocks
In order to keep the code as similar to yours as possible, I tried to change only the pieces that needed changing. Vikyath Rao and Mary respectively pointed out a simplified way to declare it as well as a common best practice.
For more information, check out these helpful explanations:
Can any one explain why StreamWriter is an Unmanaged Resource. and
Should I call Close() or Dispose() for stream objects?
In summary, although streams are managed and should garbage collect automatically, due to working with the file system unmanaged resources get involved, which is the primary reason why it's a good idea to manually dispose of the object. Your ".close()" does this. Overrides for both the StreamReader and StreamWriter classes call the ".dispose()" method, however it is still common practice to use a Using .. End Using block to avoid "running with scissors" as Enigmativity puts it in his post, in other words it makes sure that you don't go off somewhere else in the program and forget to dispose of the open filestream.
Within your program, you could simply replace the "Dim newFile As IO.StreamWriter = IO.File.CreateText("C:\output.txt")" and "newFile.close()" lines with the opening and closing statements for the Using block while using the simplified syntax, like so:
'Dim newFile As IO.StreamWriter = IO.File.CreateText(myFilePath) ' old
Using newFile As New IO.StreamWriter(myFilePath) ' new
Dim fix As String = "Text from somewhere!"
newFile.WriteLine(fix)
' other similar operations here
End Using ' new -- ensures disposal
'newFile.Close() ' old
You can write that in this way. The stream writer automatically creates the file.
Dim newFile As New StreamWriter(HERE_HAS_TO_BE_A_PATH)
PS: I cannot mention all these in the comment section as I have reputations less than 50, so I wrote my answer. Please feel free to tell me if its wrong
regards,
vikyath
I am trying to create and run a batch file from VB.net, then get the output and print it out. But when it runs it is appended by these symbols '´╗┐. Causing this error '´╗┐cd' is not recognized as an internal or external command, operable program or batch file. When I look at the batch file in notepad++ there is no symbol there! What is happening! Thanks James.
Code:
Dim path As String = Directory.GetCurrentDirectory()
Dim command As String = "cd " & path & " & " & argument
MsgBox(command)
Dim file As System.IO.StreamWriter
file = My.Computer.FileSystem.OpenTextFileWriter(tempFile, False)
file.WriteLine("#ECHO OFF")
file.WriteLine(command)
file.Close()
Dim objProcess As New Process()
Dim SROutput As System.IO.StreamReader
With objProcess.StartInfo
.FileName = tempFile
.RedirectStandardOutput = True
.UseShellExecute = False
.Arguments = ""
End With
objProcess.Start()
SROutput = objProcess.StandardOutput
Do While SROutput.Peek <> -1
'MessageBox.Show(SROutput.ReadLine)
rtbOutput.Text = rtbOutput.Text & SROutput.ReadLine & vbNewLine
Loop
objProcess.Dispose()
'Process.Start(tempFile)
rtbOutput.Text = rtbOutput.Text & message & vbNewLine
That's a Byte Order Mark.
It means the OpenTextFileWriter() method is using a different encoding than you expect. You can fix the problem by using OpenTextFileWriter() overload that allows you pick an encoding like ASCII with no byte order mark or use the encoding with the byte order mark that matches what the DOS subsystem is expecting.
Solved, Im not entirely sure what was happening when it was writing the file, but I have changed it to this
Using writer As StreamWriter = New StreamWriter(tempFile)
writer.Write(command)
End Using
and its now running fine!. Thanks for any time spent on this and feel free to post an explination as to why this was happening.
I have an issue while uploading documents have multiple periods. For example if I upload a file having an extension of ammu.gopu.docx. I would like to replace that as ammu_gopu.docx, means to preserve the extension and replace the file name with undescore.
This should do what your asking. Beware - If your file name also appears in the path it will also be updated.
Dim fullPath As String = "C:\Test\My.File.Name.txt"
Dim fileName As String = IO.Path.GetFileNameWithoutExtension(fullPath)
fullPath = fullPath.Replace(fileName, fileName.Replace("."c, "-"))
Use the System.IO.Path.GetExtension method.
Try this:
filePath = IO.Path.GetDirectoryName(filePath) & _
IO.Path.GetFileNameWithoutExtension(filePath).Replace("."c, "_"c) & _
"." & IO.Path.GetExtension(filePath)