Win.CodeNavi.frmMain.DoSearch C# (CSharp) Method

        private void DoSearch()
        {
            // Error checking
            if (Directory.Exists(txtCodePath.Text) == false) // does the directory exist?
            {
                MessageBox.Show("You need to specify a valid path", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            else  if (txtSearch.Text.Length == 0) // if the search term > 0
            {
                MessageBox.Show("You need to specify a valid search term", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            else if (txtCodePath.Text.ToLower().Contains("test") && optIgnoreTest.Checked == true)
            {
                MessageBox.Show("Your patch contains test and you have the ignore directories and files with test option selected." + Environment.NewLine + "No results will be found, cancelling search!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            string[] strExts = txtExt.Text.Split (';'); // is the defined extensions list the correct format?

            if (!(strExts.Length == 1 && strExts[0] == "*"))
            {
                foreach (string strExt in strExts)
                {
                    if (strExt.StartsWith("*.") == false)
                    {
                        MessageBox.Show(txtExt.Text + " is not in the correct format\nPlease use *.ext1;*.ext2\n", "Incorrect format", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        return;
                    }
                }
            }

            AddAndSaveCodePath();

            txtSearch.Items.Insert(0, txtSearch.Text);
            if (txtSearch.Items.Count > 20)
            {
                while (txtSearch.Items.Count > 20)
                {
                    txtSearch.Items.RemoveAt(20);
                }
            }

            // This saves the search strings so they are persistent over runs
            StringCollection strSearchStringCollection = new StringCollection();
            foreach (String strSearchString in txtSearch.Items)
            {
                strSearchStringCollection.Add(strSearchString);
            }
            Properties.Settings.Default.SearchStrings = strSearchStringCollection;
            Properties.Settings.Default.Extensions = txtExt.Text;

            Properties.Settings.Default.Save();

            // ISSUE 1: https://github.com/nccgroup/ncccodenavi/issues/1
            // Prompt the user to automatically escape
            string strSearchText = null;
            if (opRegexSearch.Checked == true)
            {

                //if (MessageBox.Show("You have regex search enabled. Do you want me to escape your search term automatically to result in a literal search?", "Regex escape?", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                //{
                    //if (opRegexSearch.Checked == true)
                    //{
                        strSearchText = Regex.Escape(txtSearch.Text);
                    //}
                //}
                //else
                //{
                    strSearchText = txtSearch.Text;
                //}
            }
            else
            {
                strSearchText = txtSearch.Text;
            }

            // Now initalize a search form
            frmSearch frmSearch = new frmSearch(strSearchText + " in " + txtCodePath.Text + " (Regex:"+opRegexSearch.Checked+",Case:"+opCaseSearch.Checked+",Ignore Test:" + optIgnoreTest.Checked+",Ignore Comments:"+ optIgnoreComments.Checked+") - " + txtExt.Text, this);
            frmSearch.MdiParent = this;
            frmSearch.Visible = true;

            // Now initialize the object and start a scan
            Scanner scanYoink = new Scanner(frmSearch, txtCodePath.Text, strSearchText, optIgnoreComments.Checked, opRegexSearch.Checked, opCaseSearch.Checked, optIgnoreTest.Checked, txtExt.Text, richExclusions.Lines);
            frmSearch.SetScanEngine(scanYoink);
            scanYoink.Start(this, frmSearch);
        }