Scaffold-DbContext“未实现方法或操作”

Question

玩得不开心。

PM>命令运行

Scaffold-DbContext "Server=myserver;Database=mysqlserverdb;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -Tables Settings -verbose

错误：

  

该方法或操作未实现。

System.NotImplementedException: The method or operation is not implemented. at Microsoft.EntityFrameworkCore.Scaffolding.ProviderCodeGenerator.GenerateUseProvider(String connectionString) at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.GenerateOnConfiguring(String connectionString, Boolean suppressConnectionStringWarning) at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.GenerateClass(IModel model, String contextName, String connectionString, Boolean useDataAnnotations, Boolean suppressConnectionStringWarning) at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpDbContextGenerator.WriteCode(IModel model, String namespace, String contextName, String connectionString, Boolean useDataAnnotations, Boolean suppressConnectionStringWarning) at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpModelGenerator.GenerateModel(IModel model, String namespace, String contextDir, String contextName, String connectionString, ModelCodeGenerationOptions options) at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContext(String provider, String connectionString, String outputDir, String outputContextDir, String dbContextClassName, IEnumerable 1个架构，IEnumerable 1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContextImpl(String provider, String connectionString, String outputDir, String outputDbContextDir, String dbContextClassName, IEnumerable 1个SchemaFilters，IEnumerable 1 tableFilters, Boolean useDataAnnotations, Boolean overwriteFiles, Boolean useDatabaseNames) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.ScaffoldContext.<>c__DisplayClass0_1.<.ctor>b__0() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0 1.b__0（）    在Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute（Action action）`

Answer 1

在安装 EF电动工具和最新Core 2.2.xx SDK 之间，现在我可以更改项目以使用下拉更改到.net core 2.2（以前只能执行2.1。

然后使用Nuget更新等。，它终于可以工作了！