Crash on converting string to byte

[Member Alienoiz]

well..they are just the Track ID and Genre ID in an mp3 file...can i change the main code and switch them to string?...this is why i posted the full code on the start!!!

[Lost User]

I don't know the answer. You first need to know what actual type they are in the file: Byte, String, Int32, Int64, Bool etc. You then need to set a matching type in your code. Then when you get the user's selection, you may or may not need to convert what the user chooses into the appropriate type. But all that detail should have been decided before you put all this code together. And I am afraid there is far too much for anyone other than you, to know where to do this.

[Member Alienoiz]

i think i can do the conversion here:

Dim strTag As New String(" ", 3)
Dim strTitle As New String(" ", 30)
Dim strArtist As New String(" ", 30)
Dim strAlbum As New String(" ", 30)
Dim strYear As New String(" ", 4)
Dim strComment As New String(" ", 28)
Dim bytDummy As Byte
Dim bytTrack As Byte
Dim bytGenre As Byte

setting the "as byte" to "new string" but i do not know about the numbers here??!!!

[Member Alienoiz]

i think is Int32 :)

[Lost User]

Fine, but you need to be certain.

[Lost User]

As I said above, You need to match your definitions with the actual types that are used in the file. So you need to find the definition of the file types you are trying to modify and check the requirements.

[jschell]

Debugging methodology - there are others though. Start removing or commenting out code until the error goes away. Obviously you must give some thought to exactly which code you do this to. Then when the error goes away you have found the problem. Then you can create a much smaller example code to test that functionality and figure out how to make it work correctly. Then you fix the original code and put everything else back.

[Member Alienoiz]

i tried this but no luck:

    If CheckBox5.Checked = True Then
                    Dim txt = TextBox5.Text
                    Dim tt As Integer = Convert.ToInt32(txt)
                    tt = objMP3V1.Frame(MP3ID3v1.FrameTypes.Track) & vbLf
                    objMP3V1.Update()
                End If
                If CheckBox6.Checked = True Then
                    objMP3V1.Frame(MP3ID3v1.FrameTypes.Comment) = TextBox6.Text
                    objMP3V1.Update()
                End If

                If CheckBox7.Checked = True Then
                    Dim xt = ComboBox1.SelectedValue
                    Dim xx As Integer = Convert.ToInt32(xt)
                    xx = objMP3V1.Frame(MP3ID3v1.FrameTypes.Genre) & vbLf
                    objMP3V1.Update()
                End If

[Lost User]

Member Alienoiz wrote:

i tried this but no luck:

Why are you trying to store 32 bit integer values in 8 bit byte fields?

[Member Alienoiz]

well..,like i say..im no coder...i just read snippets and try by error!

[Member Alienoiz]

can it be here?

' Fix the length of the frames
strTitle = LSet(mobjFrame(0), Len(strTitle))
strArtist = LSet(mobjFrame(1), Len(strArtist))
strAlbum = LSet(mobjFrame(2), Len(strAlbum))
strYear = LSet(mobjFrame(3), Len(strYear))
bytTrack = mobjFrame(4)
strComment = LSet(mobjFrame(5), Len(strComment))
bytGenre = mobjFrame(6)

sorry im blind about it for now :(((

[Lost User]

Sorry, I really have no idea what that code is trying to do, so I cannnt say whether it is correct or not.

[Member Alienoiz]

hey..i changed my library..im now using UltraID3lib.....it seems im making it but i have another question... how do i make mass edit in a listbox? im using this code that was working previously but is not working now:

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

    If ListBox1.SelectedItem = "" Then
        Dim r8 As DialogResult = MessageBox.Show(Me, "No File Selected!",
                               "Select Files", MessageBoxButtons.OK)


    Else
        If CheckBox1.Checked = False And CheckBox2.Checked = False And CheckBox3.Checked = False And CheckBox4.Checked = False And CheckBox5.Checked = False And CheckBox6.Checked = False And CheckBox7.Checked = False Then
            Dim r8 As DialogResult = MessageBox.Show(Me, "Select a tag to enter!",
                              "Select Tags", MessageBoxButtons.OK)
        Else
            Dim fil = ListBox1.SelectedItems
            Dim fil2 As String
            For Each fil2 In fil

                If CheckBox1.Checked = True Then
                    myMp3.ID3v2Tag.Title = TextBox1.Text
                    myMp3.Write()
                End If


                If CheckBox2.Checked = True Then
                    myMp3.ID3v2Tag.Artist = TextBox2.Text
                    myMp3.Write()
                End If


                If CheckBox3.Checked = True Then
                    myMp3.ID3v2Tag.Album = TextBox3.Text
                    myMp3.Write()
                End If


                If CheckBox4.Checked = True And TextBox4.Text <> "" Then
                    On Error Resume Next
                    myMp3.ID3v2Tag.Year = Short.Parse(TextBox4.Text)
                    myMp3.Write()
                    On Error Resume Next
                End If


                If CheckBox5.Checked = True And TextBox5.Text <> "" Then
                    myMp3.ID3v2Tag.TrackNum = Short.Parse(TextBox5.Text)
                    myMp3.Write()
                    On Error Resume Next
                End If


                If CheckBox6.Checked = True Then
                    myMp3.ID3v2Tag.Comments = TextBox6.Text
                    myMp3.Write()
                End If

                If CheckBox7.Checked = True Then
                    If ComboBox1.Text = "01 - User" Then
                        myMp3.ID3v2Tag

[Lost User]

Sorry, I have no idea what you mean by "this code that was working previously but is not working now:". You need to explain what happens when you run this code and why that is not correct. Alternatively, use the debugger to step through the code to try and find out what is going on.

[Member Alienoiz]

well...i just want to apply this code

If CheckBox6.Checked = True Then
myMp3.ID3v2Tag.Comments = TextBox6.Text
myMp3.Write()
End If

                If CheckBox7.Checked = True Then
                    If ComboBox1.Text = "01 - User" Then
                        myMp3.ID3v2Tag.Genre = TextBox7.Text
                        myMp3.Write()
                    Else
                        myMp3.ID3v2Tag.Genre = ComboBox1.Text
                        myMp3.Write()
                    End If
                End If

........to all selected items in a listbox!!

[Lost User]

OK, go ahead.

[Member Alienoiz]

i have been searching but i cannot find anything to use...could you gimme a help please?

[Lost User]

No, because I have no idea what your problem is. You need to show the code you are using, and explain what the problem is and where it occurs.

[Member Alienoiz]

OK...so i have a listbox with files (mp3) and im trying to edit the tags..i can do one by one but i do not know how to tag them all at once. i want to implement this code in all files of the listbox just by using a button.

If CheckBox1.Checked = True Then
myMp3.ID3v2Tag.Title = TextBox1.Text
myMp3.Write()
End If

                If CheckBox2.Checked = True Then
                    myMp3.ID3v2Tag.Artist = TextBox2.Text
                    myMp3.Write()
                End If


                If CheckBox3.Checked = True Then
                    myMp3.ID3v2Tag.Album = TextBox3.Text
                    myMp3.Write()
                End If


                If CheckBox4.Checked = True And TextBox4.Text <> "" Then
                    On Error Resume Next
                    myMp3.ID3v2Tag.Year = Short.Parse(TextBox4.Text)
                    myMp3.Write()
                    On Error Resume Next
                End If


                If CheckBox5.Checked = True And TextBox5.Text <> "" Then
                    myMp3.ID3v2Tag.TrackNum = Short.Parse(TextBox5.Text)
                    myMp3.Write()
                    On Error Resume Next
                End If


                If CheckBox6.Checked = True Then
                    myMp3.ID3v2Tag.Comments = TextBox6.Text
                    myMp3.Write()
                End If

                If CheckBox7.Checked = True Then
                If ComboBox1.Text = "01 - User" Then
                    myMp3.ID3v2Tag.Genre = TextBox7.Text
                    myMp3.Write()
                Else
                    myMp3.ID3v2Tag.Genre = ComboBox1.Text
                    myMp3.Write()
                End If

                If CheckBox8.Checked = True Then

                End If



            End If

[Lost User]

You just need a couple of loops:

ForEach file in the ListBox
Open the file
ForEach CheckBox in the Form
adjust the tags as required
Next
Save and Close the updated file
Next

Put the code into a subroutine and pass it the list of filenames from the ListBox.