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我使用.Net Framework 4.6.1作爲目標框架。我試圖用Properties來改變它。當我將目標4.6.1更改爲4.0 Visual Studio列表錯誤時。我怎樣才能改變這一點，沒有錯誤。重新定位.NET Framework
Severity Code Description Project File Line Suppression State
Error CS0246 The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 99 Active
Error CS0234 The type or namespace name 'Claims' does not exist in the namespace 'System.Security' (are you missing an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 5 Active
Error CS0234 The type or namespace name 'Claims' does not exist in the namespace 'System.Security' (are you missing an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 5 Active
Error CS0246 The type or namespace name 'ClaimsIdentity' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 99 Active
Error CS0508 'ApplicationSignInManager.CreateUserIdentityAsync(ApplicationUser)': return type must be 'Task<ClaimsIdentity>' to match overridden member 'SignInManager<ApplicationUser, string>.CreateUserIdentityAsync(ApplicationUser)' VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 99 Active
Error CS7069 Reference to type 'ClaimsIdentity' claims it is defined in 'mscorlib', but it could not be found VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 99 Active
Error CS0234 The type or namespace name 'Claims' does not exist in the namespace 'System.Security' (are you missing an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 4 Active
Error CS0246 The type or namespace name 'EmailAddress' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 53 Active
Error CS0246 The type or namespace name 'EmailAddress' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 68 Active
Error CS0246 The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 80 Active
Error CS0246 The type or namespace name 'ErrorMessage' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 80 Active
Error CS0246 The type or namespace name 'EmailAddress' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 87 Active
Error CS0246 The type or namespace name 'ErrorMessage' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 99 Active
Error CS0246 The type or namespace name 'EmailAddress' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\AccountViewModels.cs 108 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\Basket.cs 10 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\Book.cs 10 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\Category.cs 10 Active
Error CS0234 The type or namespace name 'Claims' does not exist in the namespace 'System.Security' (are you missing an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\IdentityModels.cs 2 Active
Error CS0246 The type or namespace name 'ClaimsIdentity' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\IdentityModels.cs 12 Active
Error CS0246 The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 38 Active
Error CS0246 The type or namespace name 'ErrorMessage' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 38 Active
Error CS0246 The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 57 Active
Error CS0246 The type or namespace name 'ErrorMessage' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 57 Active
Error CS0246 The type or namespace name 'Phone' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 64 Active
Error CS0246 The type or namespace name 'Phone' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\ManageViewModels.cs 76 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\MovieDVD.cs 10 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\MusicCD.cs 10 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\Product.cs 10 Active
Error CS0246 The type or namespace name 'Table' could not be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\SaleItem.cs 10 Active
Error Some NuGet packages were installed using a target framework different from the current target framework and may need to be reinstalled. Visit http://docs.nuget.org/docs/workflows/reinstalling-packages for more information. Packages affected: EntityFramework, Microsoft.ApplicationInsights, Microsoft.ApplicationInsights.Agent.Intercept, Microsoft.ApplicationInsights.DependencyCollector, Microsoft.ApplicationInsights.PerfCounterCollector, Microsoft.ApplicationInsights.Web, Microsoft.ApplicationInsights.WindowsServer, Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel, Microsoft.AspNet.Identity.Core, Microsoft.AspNet.Identity.EntityFramework, Microsoft.AspNet.Identity.Owin, Microsoft.AspNet.Mvc, Microsoft.AspNet.Razor, Microsoft.AspNet.WebPages, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Microsoft.Owin, Microsoft.Owin.Host.SystemWeb, Microsoft.Owin.Security, Microsoft.Owin.Security.Cookies, Microsoft.Owin.Security.Facebook, Microsoft.Owin.Security.Google, Microsoft.Owin.Security.MicrosoftAccount, Microsoft.Owin.Security.OAuth, Microsoft.Owin.Security.Twitter, Newtonsoft.Json VeriPark001 0
Error CS0117 'Task' does not contain a definition for 'FromResult' VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 22 Active
Error CS0117 'Task' does not contain a definition for 'FromResult' VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\IdentityConfig.cs 31 Active
Error CS7069 Reference to type 'ClaimsIdentity' claims it is defined in 'mscorlib', but it could not be found VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\App_Start\Startup.Auth.cs 33 Active
Error CS1061 'Task<SignInStatus>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<SignInStatus>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 78 Active
Error CS1061 'Task<bool>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<bool>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 100 Active
Error CS1061 'Task<SignInStatus>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<SignInStatus>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 123 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 155 Active
Error CS1061 'Task' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 158 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 184 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 205 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 251 Active
Error CS1061 'Task<string>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<string>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 290 Active
Error CS1061 'Task<bool>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<bool>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 313 Active
Error CS1061 'Task<ExternalLoginInfo>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ExternalLoginInfo>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 325 Active
Error CS1061 'Task<ExternalLoginInfo>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ExternalLoginInfo>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 365 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 371 Active
Error CS1061 'Task' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\AccountController.cs 377 Active
Error CS1061 'Task<string>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<string>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 70 Active
Error CS1061 'Task<bool>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<bool>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 71 Active
Error CS1061 'Task<IList<UserLoginInfo>>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IList<UserLoginInfo>>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 72 Active
Error CS1061 'Task<bool>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<bool>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 73 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 85 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 88 Active
Error CS1061 'Task<string>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<string>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 120 Active
Error CS1061 'Task' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 128 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 139 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 140 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 154 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 155 Active
Error CS1061 'Task<string>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<string>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 167 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 182 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 185 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 201 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 206 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 231 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 234 Active
Error CS1061 'Task<IdentityResult>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IdentityResult>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 260 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 263 Active
Error CS1061 'Task<ApplicationUser>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ApplicationUser>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 285 Active
Error CS1061 'Task<IList<UserLoginInfo>>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<IList<UserLoginInfo>>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 290 Active
Error CS0019 Operator '>' cannot be applied to operands of type 'method group' and 'int' VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 292 Active
Error CS1061 'Task<ExternalLoginInfo>' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'Task<ExternalLoginInfo>' could be found (are you missing a using directive or an assembly reference?) VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Controllers\ManageController.cs 314 Active
Error CS7069 Reference to type 'ClaimsIdentity' claims it is defined in 'mscorlib', but it could not be found VeriPark001 C:\Users\Pc-Oem\Documents\Visual Studio 2015\Projects\VeriPark001\VeriPark001\Models\IdentityModels.cs 15 Active
好吧，如果你使用_older_ .NET版本然後確定你需要停止使用_new_功能在以後的版本（和，當然，依賴瞄準一個較新的版本不能工作介紹） –
有沒有辦法做到這一點？或者我只是卡住了？ –
當然有。這可能是一項艱鉅的任務，取決於您使用的功能有多少（以及替換它們有多困難）。 –