Timestamping assemblies with Build date and time.

using System.IO;
using System;

namespace GenerateTimeStampFile
    {
    static class Program
        {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
            {
            string[] args = Environment.GetCommandLineArgs();
            if (args.Length > 1)
                {
                // Assume new file required
                string fileName = null;
                string nameSpace = "TimeStamp";
                string[] TimestampFile = new string[]
                    {@"using System;",
                     @"// The namespace can be overidden by the /N option:",
                     @"// GenerateTimeStampFile file.cs /N:MyNameSpace",
                     @"// Such settings will override your value here.",
                     @"namespace TimeStamp",
                     @"    {",
                     @"    /// <summary>",
                     @"    /// Static Timestamp related data.",
                     @"    /// </summary>",
                     @"    /// <remarks>",
                     @"    /// THIS FILE IS CHANGED BY EXTERNAL PROGRAMS.",
                     @"    /// Do not modify the namespace, as it may be overwritten. You can",
                     @"    ///    set the namespace with the /N option.",
                     @"    /// Do not modify the definition of BuildAt as your changes will be discarded.",
                     @"    /// Do not modify the definition of TimeStampedBy as your changes will be discarded.",
                     @"    /// </remarks>",
                     @"    public static class Timestamp",
                     @"        {",
                     @"        /// <summary>",
                     @"        /// The time stamp",
                     @"        /// </summary>",
                     @"        /// <remarks>",
                     @"        /// Do not modify the definition of BuildAt as your changes will be discarded.",
                     @"        /// </remarks>",
                     @"        public static DateTime BuildAt { get { return new DateTime(???); } } //--**",
                     @"        /// <summary>",
                     @"        /// The program that time stamped it.",
                     @"        /// </summary>",
                     @"        /// <remarks>",
                     @"        /// Do not modify the definition of TimeStampedBy as your changes will be discarded.",
                     @"        /// </remarks>",
                     @"        public static string TimeStampedBy { get { return @""???""; } } //--**",
                     @"        }",
                     @"    }" };
                for (int i = 1; i < args.Length; i++)
                    {
                    if (!args[i].StartsWith("/"))
                        {
                        // File name
                        fileName = args[i];
                        if (File.Exists(fileName))
                            {
                            TimestampFile = File.ReadAllLines(fileName);
                            }
                        }
                    else
                        {
                        // It's an option
                        if (args[i].StartsWith("/N:"))
                            {
                            // Set the namespace for the Timestamp class.
                            nameSpace = args[i].Substring(3);
                            }
                        }
                    }
                if (!string.IsNullOrWhiteSpace(fileName))
                    {
                    // We have an output location.
                    // Replace the namespace and timestamp.
                    for (int i = 0; i < TimestampFile.Length; i++)
                        {
                        string line = TimestampFile[i].Trim();
                        if (line.StartsWith("namespace"))
                            {
                            TimestampFile[i] = "namespace " + nameSpace;
                            }
                        else if (line.EndsWith("//--**"))
                            {
                            // Special
                            if (line.Contains("DateTime BuildAt"))
                                {
                                TimestampFile[i] = @"        public static DateTime BuildAt { get { return new DateTime(" +
                                                   DateTime.Now.Ticks.ToString() +
                                                   @"); } } //--**";
                                }
                            else if (line.Contains("string TimeStampedBy"))
                                {
                                TimestampFile[i] = @"        public static string TimeStampedBy { get { return @""GenerateTimeStampFile V1.0""; } } //--**";
                                }
                            }
                        }
                    File.WriteAllLines(fileName, TimestampFile);
                    }
                }
            Environment.ExitCode = 0;       //Set no error
            }
        }
    }