[RESOLVED] Open a textfile to richtextbox1

I want the notes.txt to be opened into richtextbox1 on form1_load, but can't figure out how...
I've tried:

Code:

---

If File.Exists("notes.txt") Then
            RichTextBox1.LoadFile("notes.txt")
        End If

---

And:

Code:

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If File.Exists("notes.txt") Then
            File.OpenRead("notes.txt")
        End If

---

But none works :S

The first one is the one you want, except that you are probably not specifying the correct file. It's generally a bad idea to specify just a file name. You should almost universally specify the full path of the file. As it is that code will look for that file in the current working directory. That will generally be the program folder by default but not always and it can change. If you want to look in the program folder then you should do so using Application.StartupPath. If you want to look elsewhere then you should specify the exact path.

Ahh, now i found the error, but i need help solving it..
As i'm debugging i have the text file in the debug folder...
My program thinks i'm looking for debugnotes.txt
I may need to put "\" before notes.txt, but i don't exactly know how i can do it...

application.startuppath & "\notes.txt"

Ahh, when i am going to learn that we use & instead of + in VB :S
But anyways i still get an error..
Code:

Code:

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RichTextBox1.LoadFile(Application.StartupPath & "\notes.rtf")

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Error:

Code:

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The fileformat was invalid

---

rtf or txt?

vb.net Code:

IO.Path.Combine(Application.StartupPath, "notes.txt")

Ahh, i don't understand what wrong, all my code looks perfect...

vb Code:

Imports System.IO
 
Public Class Form3
 
    Private Sub Form3_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        File.WriteAllText("notes.txt", RichTextBox1.Text)
    End Sub
 
    Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If File.Exists("notes.txt") Then
            Path.Combine(Application.StartupPath, "notes.txt")
        End If
    End Sub
End Class

But it won't save now as it always did before...

Tut, tut. Path.Combine is just to combine paths, not to load the file:

vb.net Code:

RichTextBox1.LoadFile(IO.Path.Combine(Application.StartupPath, "notes.txt"))

Also, you're using LoadFile to load the file so wouldn't you use SaveFile to save it?

Quote:

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Originally Posted by kake_fisk

Ahh, i don't understand what wrong, all my code looks perfect...

vb Code:

Imports System.IO
 
Public Class Form3
 
    Private Sub Form3_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        File.WriteAllText("notes.txt", RichTextBox1.Text)
    End Sub
 
    Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If File.Exists("notes.txt") Then
            Path.Combine(Application.StartupPath, "notes.txt")
        End If
    End Sub
End Class

But it won't save now as it always did before...

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The first sub is writing to a text file but the second is populating nothing

***?

Code:

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File Missing C:\notes.txt.

---

I used path.combine...

Code:

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RichTextBox1.LoadFile(Path.Combine(Application.StartupPath, "\notes.txt"))

---

I tought this was a simple thing first :S

Go to the notes.txt, right click and select properties.

Copy and Paste the address for us to see or paste it in Start > Run and see what happins

When i paste it in run it opens the textfile...
But i have another solution that maybe can fix the problem, what if i save it to specialfolder.mydocuments?
Do you know how i do that?

Check this first

Select the file in the solution explorer and check for

http://img182.imageshack.us/img182/2964/cagp7.jpg

should i upload it to the solution exlorer?

But what about saving it to my documents instead?

This is all getting a bit ridiculous. Please tell us exactly where this file is in the first place. If you haven't added it to your project, i.e. it doesn't appear in the Solution Explorer, then of course it's not going to be in the bin\Debug folder. That folder is cleared every time you build so if the file isn't copied to the output folder from the source folder then it won't exist. Is this file part of your project or not? If it is then make it part of your project. If it's not then the program folder is the wrong place for it anyway. If you want it in the My Documents folder then you'd just use My.Computer.FileSystem.SpecialDirectories.MyDocuments instead of Application.StartupPath. If this is specifically data for this app rather than a document, but the program folder is not appropriate to store it, then you can use My.Computer.FileSystem.SpecialDirectories.CurrentUserApplicationData or .AllUsersApplicationData instead.

Okay, thanks, i think i found a way now, but i'll post if it didn't work...

OOkay, this is very srange...
I use this code:

Code:

---

Imports System.IO

Public Class Form3

    Dim notes As String = _
    My.Computer.FileSystem.SpecialDirectories.MyDocuments _
    & "\notes.txt"

    Private Sub Form3_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        My.Computer.FileSystem.WriteAllText(notes, RichTextBox1.Text, False)
    End Sub

    Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If My.Computer.FileSystem.FileExists(notes) Then
            RichTextBox1.LoadFile(notes)
        End If
    End Sub
End Class

---

Then i get error about fileformat not invalid...
But wait a sec, in richtextbox, do i need to use .rtf instead of .txt?

Always pay attention to Intellisense. It will always tell you if a member is overloaded and if it is then you can always scroll through the list to see if there's a better option.

vb.net Code:

Imports System.IO
 
Public Class Form1
 
    Private filePath As String = Path.Combine(My.Computer.FileSystem.SpecialDirectories.MyDocuments, _
                                              "notes.txt")
 
    Private Sub Form1_Load(ByVal sender As Object, _
                           ByVal e As EventArgs) Handles MyBase.Load
        If File.Exists(Me.filePath) Then
            Me.RichTextBox1.LoadFile(Me.filePath, _
                                     RichTextBoxStreamType.PlainText)
        End If
    End Sub
 
    Private Sub Form1_FormClosing(ByVal sender As Object, _
                                  ByVal e As FormClosingEventArgs) Handles Me.FormClosing
        Me.RichTextBox1.SaveFile(Me.filePath, _
                                 RichTextBoxStreamType.PlainText)
    End Sub
 
End Class

Yeah, i found it out, i marked the thread as solved ;)
I needed to put plaintext behind...

It's a good idea to post back to tell everyone what the solution was if you end up coming up with it yourself. That way we all know that you have the best solution you can and it also helps others in future who might have the same problem.

Okay, thanks for the tip :)