实体框架-在程序集中找不到迁移配置类型 [英] Entity Framework - The migrations configuration type was not be found in the assembly

问题描述

在C#项目中，我有多个dbcontext，当我指定完整命令(即:

I have multiple dbcontexts in a C# project and I'm trying to enable migrations, when I specify the full command ie:

启用迁移-ContextTypeName Models.Account.AccountDetailDbContext"

"Enable-Migrations -ContextTypeName Models.Account.AccountDetailDbContext"

使用配置类创建一个迁移文件夹

A migrations folder is created, with the configuration class

然后我收到一条消息:

正在检查上下文是否以现有数据库为目标..."

"Checking if the context targets an existing database..."

然后

在程序集"Portal.WebUI"中找不到迁移配置类型"Portal.WebUI.Migrations.Configuration"."

"The migrations configuration type 'Portal.WebUI.Migrations.Configuration' was not be found in the assembly 'Portal.WebUI'."

即使它只是创建了文件，也找不到它.

Even though it has just created the file it can't find it.

有人可以帮忙吗?

我在程序包管理器控制台"中选择了正确的项目

I have the correct project selected in the Package Manager Console

我尝试使用-verbose命令，但未提供其他信息

I have tried the command using -verbose, but it gives no additional information

如果我将dbcontexts和类复制到一个新项目中，那么所有工作都将奏效，因此在现有项目中一定是使迁移失败的原因，但是我无法确定它是什么.

If I copy the dbcontexts and classes into a new project then it all works, so it must be something in this existing project that it making the migration fail, but I can't tell what it is.

预先感谢您的回答

推荐答案

我设法通过卸载EF nuget软件包然后重新安装来解决此问题.

I managed to resolve this by uninstalling the EF nuget package and then reinstalling it.

挺烦人的...但是我希望它可以帮助其他人.

Rather annoying...but I hope it helps someone else.

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