WriteOutput code part

/// <summary>
        ///  Writes output to a windows form using InvokeRequired property
        /// </summary>
        /// <param name="formatOrValue">Value to write or format used in formating strings</param>
        /// <param name="args">Parameters used in formatting strings</param>
        void WriteOutput(object formatOrValue,params object[] args) {

            string text = string.Empty;

            if(args == null || args.Length == 0) {
                if(formatOrValue != null)
                    text = formatOrValue.ToString();
                else
                    text = string.Empty;
            }
            else {
                text = string.Format(formatOrValue.ToString(),args);
            }

            text += Environment.NewLine;


            Action<string> writeAction = (s) => {
                richTextBox1.AppendText(s);
                ScrollOutputToCaret();
            };

            if(InvokeRequired)
                BeginInvoke(new Action<string>(writeAction),text);
            else
                writeAction(text);
        }

        void ScrollOutputToCaret() {
            if(richTextBox1.TextLength == 0)
                return;
            richTextBox1.Select(richTextBox1.TextLength,1);
            richTextBox1.ScrollToCaret();
        }

        void ClearOutput() {

            Action actionInvoke = () => {
                richTextBox1.Clear();
            };

            if(InvokeRequired)
                Invoke(actionInvoke);
            else
                actionInvoke();
        }