[RESOLVED] List Box

[VB_begginer]

How do I get the selected files in this code to show in a list box?

Public Class Form1


    Private Sub BtBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim BtBrowse As New FolderBrowserDialog()

        BtBrowse.SelectedPath = "C:\"

        If BtBrowse.ShowDialog() = Windows.Forms.DialogResult.OK Then

            For Each File As String In My.Computer.FileSystem.GetFiles(BtBrowse.SelectedPath, FileIO.SearchOption.SearchTopLevelOnly, "*.txt")
            Next

        End If

    End Sub

End Class

My lack of knowledge prohibits me from giving more info, so if you need more info, please ask and I will do my best to explain my desired results. I am just trying to learn.

Thanks

[weirddemon]

Once the items have been loaded, are you just wanting the selected item to be sent to the textbox when selected? Or when another button is pressed?

You can simply utilize the SelectedIndexChanged ListBox event and use the following code:

TextBox1.Text = ListBox1.Text.ToString

If you use this exact code in that specified event, the text will appear automatically when clicked.

[techgnome]

"Once the items have been loaded" -- I think that's what the OP is asking for... badly worded but sometimes that happens when you're not sure what you're after.

I think this is what you are looking for:

            For Each File As String In My.Computer.FileSystem.GetFiles(BtBrowse.SelectedPath, FileIO.SearchOption.SearchTopLevelOnly, "*.txt")
                Listbox1.Items.Add(File)
            Next

-tg

[weirddemon]

Oh. I think I saw "ListBox" as TextBox or something. Eh... it's been a long day :P

[techgnome]

day? Pffft! try week.... fortunately it's now Miller time for me. Woo-Hoo!

-tg

[VB_begginer]

Reply to #2
Weirddemon

hmmm... not sure what you are asking/telling me? I am completly new to programing sorry, but I know all about Enums now... :-)

All I want to do for now is to press Button1 and have a list of the files in the selected folder show in ListBox1.

I am stair-stepping, try to learn one thing at a time. I have a grand scheme at the end but for now, I can only handle one step at a time.


Thanks

[VB_begginer]

Reply to #3
tech & wierd

This is my code now, I think I am missing a step? You mentioned "Once the items have been loaded"

I am not sure that I have loaded anything because my list box is still empty. So I can assume now that the original code posted above is just a browse function, the code you gave me is a list function, now I must figure out how to load the desired files. Makes sense. (but I don't know how to load items?) I will search the forum for how to load items and hopefully check back for maybe a reply on how to load items at a later time. hint, hint.

Thanks

Public Class Form1


    Private Sub BtBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim BtBrowse As New FolderBrowserDialog()

        BtBrowse.SelectedPath = "C:\"

        If BtBrowse.ShowDialog() = Windows.Forms.DialogResult.OK Then

            For Each File As String In My.Computer.FileSystem.GetFiles(BtBrowse.SelectedPath, FileIO.SearchOption.SearchTopLevelOnly, "*.txt")
                ListBox1.Items.Add(File)
            Next

        End If

    End Sub

End Class

[VB_begginer]

I got it to work... It helps if I am looking for the right file extention.

Thanks guys

[VB_begginer]

How do I get the listbox to only show the files? Example being only "file.txt" not c:\path......file.txt?

I am finding VB to be understandable once someone shows me the code, but I am finding it hard to be intuative.

Thanks

[The Fire Snake]

How do I get the listbox to only show the files? Example being only "file.txt" not c:\path......file.txt?

I am finding VB to be understandable once someone shows me the code, but I am finding it hard to be intuative.

Thanks

As with so many things in VB.Net and programming in general there are many ways to do the same thing. If I were to do this then I would have done the following. Please note the Directory classes GetFiles() method returns file name with paths and the DirectoryInfo classes GetFiles() method returns file names without paths.

Dim dirInfo As New DirectoryInfo("C:\")
 
' Getting the files with .txt extension
Dim files() As FileInfo = dirInfo.GetFiles("*.txt")
 
' Adding the filenames to the listbox
For Each file As FileInfo In files
   ListBox1.Items.Add(file.Name & Environment.NewLine())
Next

[VB_begginer]

Fire Snake, thanks for the repy

The following is the code you gave me, I have a question about it

Public Class Form1


    Private Sub BtBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtBrowse.Click

        Dim DirInfo As New DirectoryInfo("C;\")
        Dim files() As FileInfo = DirInfo.GetFiles("*.*")

        For Each file As FileInfo In files
            ListBox1.Items.Add(file.Name & Enviroment.NewLine())
        Next

    End Sub

End Class

My erro box tells me that:
Type 'DirectoryInfo' is not defined
Type 'FileInfo' is not defined
Type 'FileIno' is not defined

Please understand that I am very new to this. I am using Visual Basic 2008 if this makes a difference between VB.net as you identivied the version in your post reply.

I am not sure what I am missing or what I am doing wrong.

Thanks

[The Fire Snake]

Fire Snake, thanks for the repy

The following is the code you gave me, I have a question about it

Public Class Form1


    Private Sub BtBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtBrowse.Click

        Dim DirInfo As New DirectoryInfo("C;\")
        Dim files() As FileInfo = DirInfo.GetFiles("*.*")

        For Each file As FileInfo In files
            ListBox1.Items.Add(file.Name & Enviroment.NewLine())
        Next

    End Sub

End Class

My erro box tells me that:
Type 'DirectoryInfo' is not defined
Type 'FileInfo' is not defined
Type 'FileIno' is not defined

Please understand that I am very new to this. I am using Visual Basic 2008 if this makes a difference between VB.net as you identivied the version in your post reply.

I am not sure what I am missing or what I am doing wrong.

Thanks

No Problem. Before the line that says Public Class Form1, type the following:

Imports System.IO

What this does is it allows you to use the DirectoryInfo class and its associated members(you could also use the full namespace name without the need for imports, but I don't want to get into the details and confuse you). Without this import your code won't "see" the DirectoryInfo class or the FileInfo class. Just remember that different classes are in different places and many times you will need to import the "library" where they are housed, in order to use them. The VB environment imports some "libraries" by default but others you will need to import yourself, like in this case. Hope it makes sense. There is so much stuff out there and it will take time to get it all straight. I myself have only been using VB.Net for like a year or so, but I learn so much each day. Ask if you don't get it.

[VB_begginer]

Hey it worked... cool! :-)

What does this part of the code do? I took it out of my code because it was sayin the envirment was not declared. but worked without it.

& Enviroment.NewLine

This is all starting to make sense as I learn new things. But it is so vast and confusing that my head spins, it amazes me that people can read, write and understand this stuff.

But now I understand that I have load libraries,

one step at a time

Thanks

[VB_begginer]

What does IO mean in
System.IO?

[The Fire Snake]

Hey it worked... cool! :-)
What does this part of the code do? I took it out of my code because it was sayin the envirment was not declared. but worked without it.

& Enviroment.NewLine

Environment.NewLine gives you the newline character so 2 things will be on separate lines. Like for instance you want one word on one line and one on another.

I thought you needed it here, but in this case you don't. The Listbox automatically lists each of its items on a separate line.

[The Fire Snake]

What does IO mean in
System.IO?

IO means InputOutput as this "library" has many classes that deal with common input output functions like reading from files, writing to files etc.

[techgnome]

What does IO mean in
System.IO?

IO = Input Output

-tg

[VB_begginer]

k, cool

just one last question and I will move on to a new post. Since it was brought up in this post.

How would you declare an Enviroment and where would you typicly use this function? (is it a function?)
would you use it in a message box, maybe? to have multiple line?

[The Fire Snake]

k, cool

just one last question and I will move on to a new post. Since it was brought up in this post.

How would you declare an Enviroment and where would you typicly use this function? (is it a function?)
would you use it in a message box, maybe? to have multiple line?

Environment is a class not a function. I just took a look and it contains all shared members, so you wouldn't need to instantiate it. You can use it by just using the classname.member notation.
NewLine() is a property that exists in the Environment class. Since NewLine() is a shared property you would just need to use the classname.member notation as mentioned.

Ex:

Environment.NewLine()

Whenever you want text to appear on multiple line you would use this. You can use it in a message box, like you mentioned, or in a text file etc