Tag: entity framework core migrations

添加迁移值不能为空。 参数名称：语言

我正在尝试创建一个新的迁移，但我得到一个System.ArgumentNullException说： System.ArgumentNullException: Value cannot be null. Parameter name: language at Microsoft.EntityFrameworkCore.Utilities.Check.NotNull[T](T value, String parameterName) at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations..ctor (IOperationReporter reporter, Assembly assembly, Assembly startupAssembly, String projectDir, String rootNamespace, String language) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.c__DisplayClass4_0.b__4() at Microsoft.EntityFrameworkCore.Internal.LazyRef`1.get_Value() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.c__DisplayClass3_0`1.b__0() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action) Value cannot be null. Parameter name: language