Help with Arrays

[csbarone]

Ok this is probably really easy but i cant seem to get an array of mine to populate.

Private Sub ButtonGenerate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonGenerate.Click
 
        Dim counter As Integer = 0
        If TextBox4.Text = TextBox3.Text And TextBox4.Text = TextBox2.Text And TextBox4.Text = TextBox1.Text Then
            Dim OldName, NewName, Folder As String
            Dim logCount As Integer = 0
            Dim TrueFalse As Boolean
            StartDir = TextBoxDir.Text
            'Variables for writing text log
            Dim LogArray() As String
            Dim FileWriter As StreamWriter
            Dim LogFile As String = StartDir & "LogFile.txt"
            'Loop to change names and make log
            For counter = 0 To ArrayLengthGlobal - 1 Step 1
                'Need Logic To skip files that can not be found.  Need to make a log when Skips.  
                'Have box 1 show log of files skiped
                'Have box 2 Show completed message
                OldName = StartDir & "\" & Lines2(counter) & "\" & Lines3(counter) & "\" & Lines1(counter)
                NewName = Lines4(counter)
                Folder = StartDir & "\" & Lines2(counter) & "\" & Lines3(counter)
                TrueFalse = My.Computer.FileSystem.FileExists(OldName)
                If TrueFalse Then
 
                    My.Computer.FileSystem.RenameFile(OldName, NewName)
                Else
                    LogArray(logCount) = OldName
                    logCount = logCount + 1
                End If
            Next
            FileWriter = New StreamWriter(LogFile, False)
            For counter1 = 0 To logCount Step 1
                FileWriter.Write(LogArray(counter1))
            Next
            FileWriter.Close()
            'Dim LogString() As String = LogArray
            'TextBoxOldNameDir.Text = LogString()
            TextBoxNewNameDir.Text = "Complete!"
        Else
            TextBoxNewNameDir.Text = "Error! Please make sure all files are of same length."
        End If
    End Sub

Whats happening is that LogArray under the else statement is saying Variable 'LogArray' is used before it is assigned a value.

Again I'm new to VB and I'm not to sure what this is trying to do. I thought I assigned LogArray above when I put

Dim LogArray() As String

In my code.