Re: Crash on converting string to byte - Visual Basic Discussion Boards

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

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.Genre = TextBox7.Text
                           myMp3.Write()
                       Else
                           myMp3.ID3v2Tag.Genre = ComboBox1.Text
                           myMp3.Write()
                       End If
                   End If
               Next
               Dim r9 As DialogResult = MessageBox.Show(Me, "Operation Complete!",
                         "Tagged Files!", MessageBoxButtons.OK)
           End If

       End If

can you help with this? thanks Smile | :)

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.

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!!

OK, go ahead.

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

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.

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.

<pre lang="VB"><pre>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

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.

should be something like this right?

  Dim items = ListBox1.SelectedItem()
                For Each items In ListBox1.SelectedItems

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

is not working Cry | :((

((

Your first two lines duplicate each other:

VB

Dim items = ListBox1.SelectedItem() // get a list of the SelectedItem(s)
For Each items In ListBox1.SelectedItems // do the same, but duplicating the variable name

But either way they make little sense as you do not do anything with the item you pull from the ListBox.

You need something like:

VB

' I am making an assumption that the ListBox entries are names of the files to be processed
For Each file As String In ListBox1.SelectedItems ' Extract each file name
    ' So pass this name to a subroutine that will:
    '    Open the file
    '    Process all the tags according to the CheckBox settings
    '    Save and Close the file
Next

Try not to write all your code inline, as it makes it so much more dificult to read and, more importantly, to debug.

aaarrggghh...im not able to make it work ...could you be a little more explicit please?

In what sense more explicit?

You know, one of the most frustrating things in these forums is when people keep saying things like, "it doesn't work". We have no way of knowing what that is supposed to mean, even when we can see your code.

So I suggest you start a new question. Make sure you post the code that you are using, and explain, in proper and complete detail what is not working, and why that is so.

could you correct my code?

VB

Dim items = ListBox1.SelectedItems()
                For Each items In ListBox1.SelectedItems()

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

Next

Unless you know "why" you want to convert a string to "byte" (which makes little sense in your present context) even knowing "how", will only get you a little bit further. And maybe "deeper" in the wrong direction.

"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I

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.

I have developed an HR system in MS Access and want to use a camera attached to the computer to capture staff pictures on the form to store in a table with link as staff number of employee.
I asked once and I was directed to a sample code which I copied and used but it does not work.
can someone be of help?

Opam Brown wrote:
a sample code which I copied and used but it does not work. can someone be of help?

With what? We have no idea what code you are using or what problems you have encountered.

No code, no errors... no problem. Wink | ;)

Opam Brown wrote:
can someone be of help?

I suspect a paid consultant might be able to fix it. Or perhaps determine that is not even possible as code - thus a process with manual steps might be put in place.

Someone else might be able to help if you reduce the problem to a very small sample and then provided exact details for that.

You mean take a picture without their consent? In any "sane" situation, the user indicates "ready"; which is the same as monitoring the picture folder based on their say so; i.e. "they" push the thing that snaps their picture and signal the app accordingly.

"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I

Anything you want.

Yes, it can even make coffee. Wink | ;)

sure ???