深入本机影像生成器（Ngen.exe）工具使用方法详解

ngen install filepath

Ngen uninstall filepath

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration.Install;
using System.Linq;
using System.Runtime.InteropServices;
using System.IO;
using System.Diagnostics;

 
namespace NgenInstaller
{
    [RunInstaller(true)]
    public partial class NgenInstaller : System.Configuration.Install.Installer
    {
        public NgenInstaller()
        {
            InitializeComponent();
        }

        public override void Install(IDictionary stateSaver)
        {
            NgenFile(InstallTypes.Install);
        }

 
        public override void Uninstall(IDictionary savedState)
        {
            NgenFile(InstallTypes.Uninstall);
        }

        private enum InstallTypes
        {
            Install,
            Uninstall
        }

        private void NgenFile(InstallTypes options)
        {
            string envDir = RuntimeEnvironment.GetRuntimeDirectory();
            string ngenPath = Path.Combine(envDir, "ngen.exe");
            string exePath = Context.Parameters["assemblypath"];            
            string appDir = Path.GetDirectoryName(exePath);

            int i = 1;

            do {
                string fileKey = "ngen" + i;
                //需要生成本机映象的程序集名字，配置在ngen1...5,6的配置中
                if (Context.Parameters.ContainsKey(fileKey))
                {
                    string ngenFileName = Context.Parameters["ngen" + i];
                    string fileFullName = Path.Combine(appDir, ngenFileName);
                    string argument = (options == InstallTypes.Install ? "install" : "uninstall") + " \"" + fileFullName + "\"";

                    Process ngenProcess = new Process();
                    ngenProcess.StartInfo.FileName = ngenPath;
                    ngenProcess.StartInfo.Arguments = argument;
                    ngenProcess.StartInfo.CreateNoWindow = true;
                    ngenProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                    ngenProcess.Start();

                    ngenProcess.WaitForExit();
                    i++;
                }
                else {
                    break;
                }
            }
            while (true);
        }
    }
}