I am working in Visual Basic 2017. I have tried to add the file to the Debug folder, but then it just shows that the txt file ienter image description heres missing. I don't have the option under the "Word Solution".. How can I make the file show up? It keeps telling me it doesn't exist.
Dim inFile As IO.StreamReader
Const FileName As String = "words.txt"
Dim subscript As Integer
You can get the path of the directory (Debug or Release or any other) of the *.exe file with:
Dim directory as String = My.Application.Info.DirectoryPath
Using this information, you can then construct the full path with
Dim path As String = IO.Path.Combine(directory, FileName)
If IO.File.Exists(path) Then
...
You can check in Windows File Explorer to see where the file actually is (notice the Copy Path on the ribbon). In File Explorer you will see that the .exe you are running is down 2 directories from the Words Project directory. The double dots in the path is an old DOS way to navigating around directories without having to type out the whole path. This tells the compiler to find the file up 2 directories from the current directory.
For testing purposes this will work. For a release version you could add the file to Resources and access it the same way in any version.
You don't need a stream for a text file. .ReadAllLines returns an array of the lines in the text file
Private Sub OpCode()
Dim words = File.ReadAllLines("..\..\words.txt")
End Sub
Related
Good day all
I have a test path name ""C:\test". There are the following folders in my directory:
importantStuff
UselessStuff
TopSecret
My question is this: How can I have Visual Basic return these exact names if I input the path "C:\test"? I have tried to use Directory.GetFiles(path), but it returns the path of those folders, and not their names. I'm stuck with this.
Just as a note: I am trying to port a program I wrote in python to vb.net. In python there is the function os.listdir(path). I essentialy want the vb.net equivalent of this
Try this
Dim direct As New DirectoryInfo(".\")
'Get the files based on .txt extension
Dim files As FileInfo() = direct.GetFiles("*.*")
'loop through each files and add it to Listbox control
For Each file As FileInfo In files
ComboBox.Items.Add(System.IO.Path.GetFileNameWithoutExtension(file.Name))
Next
I want to create a program that auto copy text file from one folder to another folder . is it possible to make in windows form in vb.net ? if not what about in console apps ? i tried to search but i didn't find an answer for both. please help me i'm new to to this. I want to copy all the text file that is being save to c:folder1\test1.text copy to c:folder2\test1.text then test2.text,test3.text all the text file that are being put in folder1. i want to copy in folder2.
now i only have this code:
it will only copy 1 specific textfile with file name test.txt.
enter code here
My.Computer.FileSystem.CopyFile("C:\CopyTo\test.txt",
"C:\CopyHere\test.txt")
Of course! First of all we need a function that search for files.
Public Sub SearchFiles(ByVal Pattern As String, ByVal Path As String, ByVal FilesFound As ArrayList)
FilesFound.AddRange(Directory.GetFiles(Path, Pattern))
End Sub
But where we should save the list of files? We can use a Array for it. Also we should define our output and input folder
Dim files As New ArrayList
Dim inDir As String = "input path"
Dim outDir As String = "output path"
We can now call this function like this:
SearchFiles("*.txt", inDir, files)
All .txt files in the folder are now saved in our Array List. But how we can work with it? We can now work with it like this:
Try
For Each file As String In files
Dim fName As String = Path.GetFileName(file)
My.Computer.FileSystem.CopyFile(file , outDir & "\" & fName, overwrite:=False)
Next
Catch ex As Exception
Console.WriteLine(ex.ToString)
End Try
This will copy every .txt file that where found in our inDir to our outDir. If something goes wrong then you will see this in the console. Try it out and understand how it works :)
Ok, here is my story:
I am building a fileviewer, and i am trying to delete the selected file in the listview.
when i try to delete it, it gave me an error saying the file wasnt found. I looked at my desktop and the file was there. here is the original code:
dim f as string = lv1.focuseditem.text
my.computer.filesystem.deletfile(f)
lv1.update()
this gave me that error. My updated code is supposed to show me where the computer thinks my file is:
Dim file As String = lv1.FocusedItem.Text
Dim testFile As System.IO.FileInfo
testFile = My.Computer.FileSystem.GetFileInfo(file)
Dim folderPath As String = testFile.DirectoryName
MsgBox(folderPath)
this shows a messagebox that shows the path of:
C:\Users\tgs266\Desktop\SIOS\SIOS\SIOS\obj\Debug\test.txt
but the real file location is:
C:\Users\tgs266\Desktop\test.txt
please help
How are you getting the filenames for the ListView? Is it just the filename and no path?
If, for example, lv1.FocusedItem.Text is "test.txt", and that is the value you use (without the path), by default the program will look in the directory it's executing in. This is most likely why you're seeing C:\Users\tgs266\Desktop\SIOS\SIOS\SIOS\obj\Debug\test.txt as the location, instead of what you expected.
If all the files are on your desktop, you can use Environment.GetFolderPath in conjunction with the Environment.SpecialFolder Enumeration to get the file, like this:
Dim file As String = lv1.FocusedItem.Text
Dim testFile As System.IO.FileInfo
testFile = My.Computer.FileSystem.GetFileInfo(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\" + file)
Dim folderPath As String = testFile.DirectoryName
MsgBox(folderPath)
However, if you're going to have files scattered throughout your system, you'd be better off storing the full path as #Plutonix indicates in his comment.
It looks like your code is looking in your applications path on the server while you want to look at the users desktop location.
Okay, so I have been searching for ages to find this but no luck.
I am using:
Me.downloader.DownloadFileAsync(New Uri(fileUrl), Path.GetFileName(fileUrl), Stopwatch.StartNew)
To download a file but I want it to save to the root directory of my program in a file called launcher.
So for example, if my program is on the desktop and I open it and click start I want it to create the launcher folder if it's missing then download the files into that and if it's not then just download the files into it.
I've been looking everywhere to find code which would allow me to do this and I have tried lots of different things.
At the moment, it justs saves in the root directory of where the program is.
Thanks.
Try something like this:
Dim baseDir As String = AppDomain.CurrentDomain.BaseDirectory
Dim launcherDir As String = Path.Combine(baseDir, "Launcher")
If Not Directory.Exists(launcherDir) Then
Directory.CreateDirectory(launcherDir)
End If
Dim targetFile = Path.Combine(launcherDir, Path.GetFileName(fileUrl))
Me.downloader.DownloadFileAsync(New Uri(fileUrl), targetFile, Stopwatch.StartNew)
I wrote a program that reads from text files and can create them to load and save data. I have a few files that are the "default" data that are loaded as soon as the program start. The files are loaded by a static reference. My code runs fine before I publish it, but obviously when I publish it, the static references no longer work. I don't know how to add the default data to the build as distinct text files so that I can still reference it after the build.
I imagine being able to build the program and have some sort of folder that accompanies the executable with the default data files in them that I can easily reference, but I don't know how to do that (or if there is a better way).
Below is the start of the code I use to read from the file. Currently, the default data's file name is passed statically into the sub and is used to identify the file to read from, so I'd like to have a published file that I can do the same thing with.
Try
Dim sr As New IO.StreamReader(FileName)
Dim strLine As String = ""
Do Until sr.EndOfStream
strLine = sr.ReadLine
'Code that interprets the data in the file
Note: I've tried adding the files as "Resources" but I can't seem to reference the file as a text file; I can only retrieve the massive wall of text contained within the document which won't work with the above code (unless of course I'm missing something).
If you could clarify:
How do I add a file to a build so that I can still access it
collectively by a file name?
How will my code reference the files (e.g. by
"My.Resources.filename"?) in the final build?
You can add the file to the build as either a content file or an embedded resource.
For a content file, set the Build Action of the file to 'content', and Copy to Output Directory to 'Copy Always' in the file properties. You can then access the file like this:
FileName = Application.StartupPath() = + FileName
Dim sr As New IO.StreamReader(FileName)
...
To embed the file as a resource you have to set the Build Action of the file to 'Embedded Resource' and Copy to Output Directory to false.
This Microsoft support page has a walkthough about accessing embedded resources. The code would be something like this:
Dim sr As StreamReader
Dim thisAssembly As Assembly
thisAssembly = Assembly.GetExecutingAssembly()
sr = New StreamReader(thisAssembly.GetManifestResourceStream("NameSpace." + FileName))
Dim strLine As String = ""
Do Until sr.EndOfStream
strLine = sr.ReadLine
'Code that interprets the data in the file
...
Replace NameSpace with the namespace of your application (Project Properties -> Application -> root namespace)
You also have to add Imports System.Reflection at the top of your code file.
Using an embedded resource has the advantage of less files to manage, and you don't have to keep track of paths.