[RESOLVED] RichTextBox - Determine lines have changed

[bergerkiller]

Hello everyone.

I am working on a way to determine if the lines of a RichTextBox have changed.
I currently use this code:

            Dim newhash As Integer = Me.Text.GetHashCode
            If newhash <> Me._prevhash Then
                Me._prevhash = newhash
                Me._lines = MyBase.Lines
                If Me._lines.Count = 0 Then
                    ReDim Me._lines(0)
                    Me._lines(0) = ""
                End If
            End If

But this method has a bad issue: The text property takes a while to "load up" plus getting its hash code adds to it. This code runs every time the Lines are needed (it is a property). So this code:

For i As Integer = 0 To Lines.Count - 1
    Dim line As String = Lines(i)
Next

Takes ages to complete, because for every line it checks if the lines have changed.

I am trying to evade using MyBase.Lines too much, since that REALLY takes ages to load.

- I can not use the modified property since it is unreliable (set to true if only a text color changes)
- Can't use the RTF since it changes without the text changing (coloring) and the hash code is slow as well.
- Can't use the TextChanged event, since it is sent after the SelectionChanged event (for some reason)

Any help on this?