C#如何将DLL打包到程序中

namespace ClassCal
{
    public class Calculate
    {
        public int TestAdd(int num1,int num2)
        {
            return num1 + num2;
        }
    }
}

private void btn_cal_Click(object sender, EventArgs e)
{
     ClassCal.Calculate t1 = new ClassCal.Calculate();
     int value = t1.TestAdd(Convert.ToInt32(tb_num1.Text), Convert.ToInt32(tb_num2.Text));

     tb_sum.Text = value.ToString();
}

static class Program
    {

        static Program()
        {
            //这个绑定事件必须要在引用到ClassCal这个程序集的方法之前,注意是方法之前,不是语句之间,就算语句是在方法最后一行,在进入方法的时候就会加载程序集,如果这个时候没有绑定事件,则直接抛出异常,或者程序终止了
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
        }

        static System.Reflection.Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
        {
            //获取加载失败的程序集的全名
            var assName = new AssemblyName(args.Name).FullName;
            if (args.Name == "ClassCal, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null")
            {
                //读取资源
                using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("WinFormTest.ClassCal.dll"))
                {
                    var bytes = new byte[stream.Length];
                    stream.Read(bytes, 0, (int)stream.Length);
                    return Assembly.Load(bytes);//加载资源文件中的dll,代替加载失败的程序集
                }
            }
            throw new DllNotFoundException(assName);
        }
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

/// <summary> 载入资源中的动态链接库(dll)文件
    /// </summary>
    static class LoadResourceDll
    {
        static Dictionary<string, Assembly> Dlls = new Dictionary<string, Assembly>();
        static Dictionary<string, object> Assemblies = new Dictionary<string, object>();

        static Assembly AssemblyResolve(object sender, ResolveEventArgs args)
        {
            //程序集
            Assembly ass;
            //获取加载失败的程序集的全名
            var assName = new AssemblyName(args.Name).FullName;
            //判断Dlls集合中是否有已加载的同名程序集
            if (Dlls.TryGetValue(assName, out ass) && ass != null)
            {
                Dlls[assName] = null;//如果有则置空并返回
                return ass;
            }
            else
            {
                throw new DllNotFoundException(assName);//否则抛出加载失败的异常
            }
        }

        /// <summary> 注册资源中的dll
        /// </summary>
        public static void RegistDLL()
        {
            //获取调用者的程序集
            var ass = new StackTrace(0).GetFrame(1).GetMethod().Module.Assembly;
            //判断程序集是否已经处理
            if (Assemblies.ContainsKey(ass.FullName))
            {
                return;
            }
            //程序集加入已处理集合
            Assemblies.Add(ass.FullName, null);
            //绑定程序集加载失败事件(这里我测试了,就算重复绑也是没关系的)
            AppDomain.CurrentDomain.AssemblyResolve += AssemblyResolve;
            //获取所有资源文件文件名
            var res = ass.GetManifestResourceNames();
            foreach (var r in res)
            {
                //如果是dll,则加载
                if (r.EndsWith(".dll", StringComparison.OrdinalIgnoreCase))
                {
                    try
                    {
                        var s = ass.GetManifestResourceStream(r);
                        var bts = new byte[s.Length];
                        s.Read(bts, 0, (int)s.Length);
                        var da = Assembly.Load(bts);
                        //判断是否已经加载
                        if (Dlls.ContainsKey(da.FullName))
                        {
                            continue;
                        }
                        Dlls[da.FullName] = da;
                    }
                    catch
                    {
                        //加载失败就算了...
                    }
                }
            }
        }
    }

static class Program
    {
        static Program()
        {
            LoadResourceDll.RegistDLL();
        }

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }