WikiFunctions.Controls.RegexRunner.GetExecutionTime C# (CSharp) Method

        public long GetExecutionTime()
        {
            return ExecutionTime;
        }

        internal void RegexRunnerFinished(RegexRunner sender)
        {
            Busy = false;
            Runner = null;

            if (sender.Error != null)
            {
                Status.Text = "Error encountered during processing";
                MessageBox.Show(this, sender.Error.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (string.IsNullOrEmpty(sender.Replace)) // find
            {
                foreach (Match m in sender.Matches)
                {
                    TreeNode n = Captures.Nodes.Add("{" + ReplaceNewLines(m.Value) + "}");
                    foreach (Group g in m.Groups)
                    { // TODO: Is there any way to get the name of the group when explicit capture is on?
                        if (g.Captures.Count > 1)
                        {
                            TreeNode nn = n.Nodes.Add("...");
                            foreach (Capture c in g.Captures)
                                nn.Nodes.Add("{" + ReplaceNewLines(c.Value) + "}");
                        }
                        else if (g.Captures.Count == 1)
                            n.Nodes.Add(ReplaceNewLines("{" + g.Captures[0].Value) + "}");
                    }
                }
                if (sender.Matches.Count == 0)
                    Status.Text = "No matches";
                else if (sender.Matches.Count == 1)
                    Status.Text = "1 match found";
                else
                    Status.Text = sender.Matches.Count + " matches found";

                Status.Text += " in " + sender.GetExecutionTime() + " ms";

                Captures.ExpandAll();
            }
            else // replace
            {
                ResultText.Text = sender.Result;
                if (sender.Matches.Count != 1)
                    Status.Text = sender.Matches.Count + " replacements performed";
                else
                    Status.Text = "1 replacement performed";

                Status.Text += " in " + sender.GetExecutionTime() + " ms";
                
                Captures.Visible = false;
                ResultText.Visible = true;

                txtInput.Text = txtInput.Text.Replace("\n", "\r\n");
                ResultText.Text = ResultText.Text.Replace("\r\n", "\n");
                ResultText.Text = ResultText.Text.Replace("\n", "\r\n");
            }
        }