Enable-Migrations-无法将参数绑定到参数"Path" [英] Enable-Migrations - Cannot bind argument to parameter 'Path'

问题描述

我是ASP.NET的新手，正在尝试使用实体框架设置webAPI c#应用程序.但是，当我尝试在nuget-package-manager控制台上运行Enable-Migrations命令时，出现以下错误:

I'm new to ASP.NET and am trying to set up a webAPI c# application with entity framework. But when I try to run the Enable-Migrations command on nuget-package-manager console, I'm getting the following error:

无法将参数绑定到参数'Path'，因为它为空"

"Cannot bind argument to parameter 'Path' because it is null"

    enable-migrations : Cannot bind argument to parameter 'Path' because it is 
    null.
    At line:1 char:1
    + enable-migrations -ContextTypeName SchoolDBContext
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Enable-Migrations], 
    ParameterBindingValidationException
    + FullyQualifiedErrorId : 
    ParameterArgumentValidationErrorNullNotAllowed,Enable-Migrations

我尝试卸载并重新安装实体框架，但仍然会出现相同的错误.

I've tried uninstalling and re-installing entity framework but it still gives the same error.

我该如何解决?

推荐答案

在使用EntityFramework 6.3.0时出现此错误，将其降级为6.2.0可以解决我的问题.

I had this error when using EntityFramework 6.3.0, downgrading it to 6.2.0 fix my issue.

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