Read Text File From SQL Server, Read Its Content, And Load It In RichTextBox (Related Component: Context.Response.BinaryWrite(), And StreamReader)

OBJECTIVE: I would like to read a text file from SQL Server 2000, read the text file content, and load its conntents in a RichTextBox

THINGS I'VE DONE AND HAVE WORKING:
1) I've successfully load a text file (ex: textFile.txt) in sql server database table column (with datatype Image) 2) I've also able to load the file using a Handler as below:

using System;
using System.Web;
using System.Data.SqlClient;

public class HandlerImage : IHttpHandler {

string connectionString;
public void ProcessRequest (HttpContext context)
{
connectionString = System.Configuration.ConfigurationManager.ConnectionStrings
["NWS_ScheduleSQL2000"].ConnectionString;
int ImageID = Convert.ToInt32(context.Request.QueryString["id"]);
SqlConnection myConnection = new SqlConnection(connectionString);

string Command = "SELECT [Image], Image_Type FROM Images WHERE Image_Id=@Image_Id";
SqlCommand cmd = new SqlCommand(Command, myConnection);
cmd.Parameters.Add("@Image_Id", System.Data.SqlDbType.Int).Value = ImageID;

SqlDataReader dr;

myConnection.Open();
cmd.Prepare();
dr = cmd.ExecuteReader();
if (dr.Read())
{ //WRITE IMAGE TO THE BROWSER
context.Response.ContentType = dr["Image_Type"].ToString();
context.Response.BinaryWrite((byte[])dr["Image"]);
}
myConnection.Close();
}

public bool IsReusable {
get {
return false;
}
}

}'>'>

<a href='<%# "HandlerDocument.ashx?id=" + Eval("Doc_ID") %>'>File

</a>
- Click on this link, I'll be able to download or view the file

WHAT I WANT TO DO, BUT HAVE PROBLEM:
- I would like to be able to read CONTENT of this file and load it in a string as below

StreamReader SR = new StreamReader()
SR = File.Open("File.txt");
String contentText = SR.Readline();
txtBox.text = contentText;

BUT THIS ONLY WORK FOR files in the server.
I would like to be able to read FILE CONTENTS from SQL Server.

PLEASE HELP. I really appreciate it.