CrossStitchCreator.PatternEditor.AddPattern C# (CSharp) Method

        public void AddPattern(IColourInfo c)
        {
            // find out if Color already exists in list.
            foreach (ListViewItem lvi in patternList.Items)
            {
                if (lvi.BackColor == c.Colour)
                {
                    lvi.Tag = c.Frequency;
                    return;
                }
            }
            // Colour wasn't in list. Add a new one.
            AddPattern(c, CreateNewPattern());
        }