.net 项目生成时自动更新版本号

using System;
using System.IO;
using System.Text;

namespace AssemblyInfoUtil
{
    /// <summary>
    /// Summary description for Class1.
    /// </summary>
    class AssemblyInfoUtil
    {
    private static int incParamNum = 0;

    private static string fileName = "";
    
    private static string versionStr = null;

    private static bool isVB = false;

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main(string[] args)
    {
        for (int i = 0; i < args.Length; i++) {
            if (args[i].StartsWith("-inc:")) {
           string s = args[i].Substring("-inc:".Length);
           incParamNum = int.Parse(s);
            }
            else if (args[i].StartsWith("-set:")) {
           versionStr = args[i].Substring("-set:".Length);
            }
            else
           fileName = args[i];
        }

        if (Path.GetExtension(fileName).ToLower() == ".vb")
        isVB = true;

        if (fileName == "") {
        System.Console.WriteLine(@"Usage: AssemblyInfoUtil 
            <path to AssemblyInfo.cs or AssemblyInfo.vb file> [options]");
        System.Console.WriteLine("Options: ");
        System.Console.WriteLine(@"  -set:<new version number> - 
                set new version number (in NN.NN.NN.NN format)");
        System.Console.WriteLine(@"  -inc:<parameter index>  - 
           increases the parameter with specified index (can be from 1 to 4)");
        return;
        }

        if (!File.Exists(fileName)) {
        System.Console.WriteLine
            ("Error: Can not find file \"" + fileName + "\"");
        return;
        }

        System.Console.Write("Processing \"" + fileName + "\"...");
        StreamReader reader = new StreamReader(fileName);
             StreamWriter writer = new StreamWriter(fileName + ".out");
        String line;

        while ((line = reader.ReadLine()) != null) {
        line = ProcessLine(line);
        writer.WriteLine(line);
        }
        reader.Close();
        writer.Close();

        File.Delete(fileName);
        File.Move(fileName + ".out", fileName);
        System.Console.WriteLine("Done!");
    }

    private static string ProcessLine(string line) {
        if (isVB) {
        line = ProcessLinePart(line, "<Assembly: AssemblyVersion(\"");
        line = ProcessLinePart(line, "<Assembly: AssemblyFileVersion(\"");
        } 
        else {
        line = ProcessLinePart(line, "[assembly: AssemblyVersion(\"");
        line = ProcessLinePart(line, "[assembly: AssemblyFileVersion(\"");
        }
        return line;
    }

    private static string ProcessLinePart(string line, string part) {
        int spos = line.IndexOf(part);
        if (spos >= 0) {
        spos += part.Length;
        int epos = line.IndexOf(‘"‘, spos);
        string oldVersion = line.Substring(spos, epos - spos);
        string newVersion = "";
        bool performChange = false;

        if (incParamNum > 0) {
              string[] nums = oldVersion.Split(‘.‘);
            if (nums.Length >= incParamNum && nums[incParamNum - 1] != "*") {
            Int64 val = Int64.Parse(nums[incParamNum - 1]);
            val++;
            nums[incParamNum - 1] = val.ToString();
            newVersion = nums[0]; 
            for (int i = 1; i < nums.Length; i++) {
                newVersion += "." + nums[i];
            }
            performChange = true;
            }
        }
        
        else if (versionStr != null) {
            newVersion = versionStr;
            performChange = true;
        }

        if (performChange) {
            StringBuilder str = new StringBuilder(line);
            str.Remove(spos, epos - spos);
            str.Insert(spos, newVersion);
            line = str.ToString();
        }
        } 
        return line;
    }
     }
}