每次在MVC Entity Framework中使用不同的计算机时，是否都需要重新生成模型？

Question

我在服务器上有一个项目的svn repo，我曾经从中检出机器上的项目并且可以正常工作。

我的项目使用MVC 3和Entity Framework。当我结帐项目时，我必须删除模型并重新生成模型（例如.edmx文件）并更新web.config文件。

此过程非常耗时，我不喜欢有任何解决方法吗？？

这是我的连接字符串

 <connectionStrings>

        <add name="AppConfigDBEntities" connectionString="metadata=res://*/Models.AppConfigModel.csdl|res://*/Models.AppConfigModel.ssdl|res://*/Models.AppConfigModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=INMHVIHWD025\SQLEXPRESS;initial catalog=test_db_name;persist security info=True;user id=admin;password=admin;multipleactiveresultsets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

           ...
           ...
           ...

      </connectionStrings>

如果我不重新生成模型，则会遇到错误

    2018-11-06 16:27:47,080 [5] INFO  MyApp.Controllers.homeController [(null)] - User Logout Successfully...!
    2018-11-06 16:27:47,131 [6] INFO  MyApp.Controllers.homeController [(null)] - Inside homecontroller Index () 
    2018-11-06 16:27:53,015 [5] INFO  MyApp.Controllers.homeController [(null)] - Inside homecontroller Index () 
    2018-11-06 16:28:08,722 [5] INFO  MyApp.Controllers.homeController [(null)] - Inside homecontroller Login Post () 
    2018-11-06 16:28:23,733 [5] ERROR MyApp.Controllers.homeController [(null)] - Exception inside Login () :   at System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure)
       at System.Data.EntityClient.EntityConnection.Open()
       at System.Data.Objects.ObjectContext.EnsureConnection()
       at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
       at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
       at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source)
       at System.Data.Objects.ELinq.ObjectQueryProvider.<>c__11`1.<GetElementFunction>b__11_1(IEnumerable`1 sequence)
       at System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot)
       at System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression)
       at System.Linq.Queryable.FirstOrDefault[TSource](IQueryable`1 source, Expression`1 predicate)
       at MyApp.Controllers.homeController.Login(FormCollection form) in C:\Visual Studio 2017 Workspace\Project1\MyApp\Controllers\homeController.cs:line 116
    2018-11-06 16:28:23,738 [6] INFO  MyApp.Controllers.homeController [(null)] - Inside homecontroller Index () 

下面是我的控制器代码。

[HttpPost]
        public ActionResult Login(FormCollection form)
        {
            log.Info("Inside homecontroller Login Post () ");
            string uname = form["uname"];
            string password = form["password"];
            if (string.IsNullOrEmpty(uname) || string.IsNullOrEmpty(password)) {
                TempData["errorMsg"] = "Username or password required..!";
                log.Info("Username or password required..!");
                return RedirectToAction("Index", "Home");
            }
            try
            {           
                    string encryptedPwd = MyApp.Utils.PasswordUtils.Encrypt(password);
                    var myUser = userProfileDBObj.tbl_user_profile.FirstOrDefault(u => u.uname == uname && u.password == encryptedPwd);
                    if (myUser != null)
                    {
                        List<long> roles = (List<long>)usersRoleDBObj.tbl_users_roles.Where(r => r.user_id == myUser.id).Select(r => r.role_id).ToList();
                        List<string> roles_funtionalities = new List<string>();
                        foreach (var roleId in roles)
                        {
                            List<string> roles_func = rolesFunDBObj.tbl_roles_functionality.Where(x => x.role_id == roleId).Select(x => x.functionality_id).ToList();
                            foreach (string item in roles_func)
                            {
                                Debug.WriteLine(item.ToString());
                                if (!roles_funtionalities.Contains(item))
                                    roles_funtionalities.Add(item.ToString());
                            }

                        }
                        log.Info("roles_funtionalities.Count :" + roles_funtionalities.Count);
                        foreach (string item in roles_funtionalities)
                        {
                            log.Info(item.ToString());
                        }
                        TempData["userFunctionalities"] = roles_funtionalities;
                        TempData["uname"] = myUser.uname;
                        TempData["uId"] = myUser.id;
                        log.Info("User LoggedIn Successfully..!");
                        return RedirectToAction("userHome", "Home");
                    }
                    else
                    {
                        TempData["errorMsg"] = "Username or password incorrect..!";
                        log.Info("Username or password incorrect..!");
                        return RedirectToAction("Index", "Home");
                    }
                }        
            catch (Exception e)
            {
                log.Error("Exception inside Login () :" + e.StackTrace);
            }
            return RedirectToAction("Index", "Home");
        }