using System;

 using System.Text;

 using System.IO;

 using System.Windows.Forms;

 namespace SharpDisplayManager

 {

     public class RichTextBoxTextWriter : TextWriter

     {

         public delegate void WriteDelegate(char aChar);

         RichTextBox iRichTextBox = null;

         string iAccumulator = "";

         private char iLastChar='\n';

         public RichTextBoxTextWriter(RichTextBox aRichTextBox)

         {

             iRichTextBox = aRichTextBox;            

         }

         public override void Write(char aChar)

         {

             if (aChar == '\r')

             {

                 //Skip

                 return;

             }

             //Put our time stamp if starting a new line

             char previousChar = iLastChar;

             iLastChar = aChar;

             if (previousChar == '\n')

             {

                 //Write(DateTime.Now.ToString("yyyy/MM/dd - HH:mm:ss.fff: "));

                 Write(DateTime.Now.ToString("MM/dd HH:mm:ss.fff: "));

             }

             base.Write(aChar);

             if (iRichTextBox.InvokeRequired)

             {

                 lock (iAccumulator)

                 {

                     iAccumulator += aChar;

                 }

                 //Invoke was not working from here

                 //WriteDelegate d = new WriteDelegate(Write);

                 //iRichTextBox.Invoke(d, new object[] { aChar });

             }

             else

             {

                 Flush();

                 iRichTextBox.AppendText(aChar.ToString()); // When character data is written, append it to the text box.

             }

         }

         public override Encoding Encoding

         {

             get { return System.Text.Encoding.UTF8; }

         }

         /// <summary>

         /// 

         /// </summary>

         public override void Flush()

         {

             base.Flush();

             lock (iAccumulator)

             {

                 if (!string.IsNullOrEmpty(iAccumulator))

                 {

                     iRichTextBox.AppendText(iAccumulator); // When character data is written, append it to the text box.

                     iAccumulator = "";

                 }

             }

         }

     }

 }