add-migration:由于参数为空字符串，因此无法将其绑定到参数"Path" [英] add-migration : Cannot bind argument to parameter 'Path' because it is an empty string

问题描述

我正在Visual Studio 2017上运行具有Docker支持的默认api核心项目，并且 每当我运行命令add-migration -name name

I'm running default api core project on Visual studio 2017 with docker support and I got this error everytime I run the command add-migration -name name

add-migration:因为参数为空字符串，所以无法将其绑定到参数"Path". 在第1行:char:1 +添加迁移 + ~~~~~~~~~~~~~~ + CategoryInfo:InvalidData:(:) [Add-Migration]，ParameterBindingValidationException + FullyQualifiedErrorId:ParameterArgumentValidationErrorEmptyStringNotAllowed，添加迁移

add-migration : Cannot bind argument to parameter 'Path' because it is an empty string. At line:1 char:1 + add-migration + ~~~~~~~~~~~~~ + CategoryInfo : InvalidData: (:) [Add-Migration], ParameterBindingValidationException + FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyStringNotAllowed,Add-Migration

PS:此命令在没有Docker支持的情况下有效，但是在添加Docker支持时返回此错误

PS : This command works without docker support, but return this error when I add docker support

推荐答案

您似乎遇到了问题#7540 .现在，将您的项目放在物理"驱动器上，而不是在网络文件共享上.(取消操作.您正在使用PMC命令.)

It looks like you're hitting issue #7540. For now, put your project on a "physical" drive instead of a network file share. (Scratch that. You're using the PMC commands.)

您可能遇到的问题是#7439 .运行命令时，请确保将您的应用程序选择为启动项目(或使用-StartupProject参数).

You're probably hitting issue #7439. Make sure your app is selected as the startup project (or use the -StartupProject parameter) when running the commands.

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