Tukukkk

Currently working on a project where I am trying to highlight words in a richtextbox. the problem im currently at is that I can only highlight 1 word well and if more words needs to be highlighted the functions doesn't work well. it has something to do with the pointers but I didn't found a solution for it since its pretty specific

The function currently is

public void HighlightText(RichTextBox richTextBox, int startPoint, int endPoint, Color color)

    {



        TextPointer pointer = richTextBox.Document.ContentStart;

        TextPointer start = null, end = null;

        int count = 0;

        while (pointer != null)

        {

            if (pointer.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.Text)

            {

                if (count == startPoint) start = pointer.GetInsertionPosition(LogicalDirection.Forward);

                if (count == endPoint) end = pointer.GetInsertionPosition(LogicalDirection.Forward);

                count++;

            }

            pointer = pointer.GetNextInsertionPosition(LogicalDirection.Forward);

        }

        if (start == null) start = richTextBox.Document.ContentEnd;

        if (end == null) end = richTextBox.Document.ContentEnd;



        TextRange range = new TextRange(start, end);

        range.ApplyPropertyValue(TextElement.BackgroundProperty, new SolidColorBrush(color));

    }

While this function works when i call it one time. It doesn't work the 2nd time i call it.

HighlightText(textToWrite, 0, 5, Color.FromRgb(255, 0, 0));

HighlightText(textToWrite, 6, 11, Color.FromRgb(255, 255, 0));

HighlightText(textToWrite, 12, 17, Color.FromRgb(255, 0, 0));

If i only call one of these methods instead of 3 it works like i want . i think it has something to do with the chars in the highlight but I dont know how to work arround it. If anyone has any workarround/ fix for me please let me know.