DarkRoomW.frmMain.Find C# (CSharp) Method

        public void Find()
        {
            int pos;
            pos = txtPage.Find(SearchString, txtPage.SelectionStart + txtPage.SelectionLength, FindOptions);
            if (pos == -1 & txtPage.SelectionStart > 0)
            {
                if (MessageBox.Show("You have reached the end of the document, start search at the beginning of the document?", "End of Document", MessageBoxButtons.YesNo) == DialogResult.Yes)
                {
                    txtPage.SelectionStart = 0;
                    Find();
                }
            }
            else if (pos == -1)
            {
                MessageBox.Show("Search string not found.");
            }
            else
            {
                txtPage.SelectionStart = pos;
            }
        }

        private void Find()
        {
            RichTextBoxFinds options = new RichTextBoxFinds();

            if (chkWholeWords.Checked)
            {
                options = options | RichTextBoxFinds.WholeWord;
            }
            if (chkCase.Checked)
            {
                options = options | RichTextBoxFinds.MatchCase;
            }
            if (rdoUp.Checked)
            {
                options = options | RichTextBoxFinds.Reverse;
            }
            parent.Find(txtFind.Text, options);
        }