我正在尝试从Sqlite数据库中为UWP app设置Entityframeworkcore DbContext。我做:
Scaffold-DbContext "data source=C:\SqliteDbFiles\Sqlite.db" Microsoft.EntityFrameworkCore.Sqlite
无论我尝试什么,尽管我不断收到此错误:
System.DllNotFoundException: Unable to load DLL 'sqlite3': This operation is only valid in the context of an app container. (Exception from HRESULT: 0x8007109A)
at Microsoft.Data.Sqlite.Interop.NativeMethods.Sqlite3_sqlite3.sqlite3_open_v2(IntPtr filename, Sqlite3Handle& ppDb, Int32 flags, IntPtr vfs)
at Microsoft.Data.Sqlite.Interop.NativeMethods.Sqlite3_sqlite3.open_v2(IntPtr filename, Sqlite3Handle& ppDb, Int32 flags, IntPtr vfs)
at Microsoft.Data.Sqlite.Interop.NativeMethods.sqlite3_open_v2(String filename, Sqlite3Handle& ppDb, Int32 flags, String vfs)
at Microsoft.Data.Sqlite.SqliteConnection.Open()
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqliteDatabaseModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet)
at Microsoft.EntityFrameworkCore.Scaffolding.RelationalScaffoldingModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqliteScaffoldingModelFactory.Create(String connectionString, TableSelectionSet tableSelectionSet)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GetMetadataModel(ReverseEngineeringConfiguration configuration)
at Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GenerateAsync(ReverseEngineeringConfiguration configuration, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Design.DatabaseOperations.ReverseEngineerAsync(String provider, String connectionString, String outputDir, String dbContextClassName, IEnumerable`1 schemas, IEnumerable`1 tables, Boolean useDataAnnotations, Boolean overwriteFiles, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.<ReverseEngineerImpl>d__21.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass4_0`1.<Execute>b__0()
at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Unable to load DLL 'sqlite3': This operation is only valid in the context of an app container. (Exception from HRESULT: 0x8007109A)
任何帮助将不胜感激
最佳答案
在UWP上运行时使用的sqlite3.dll
版本在设计时不起作用。您可以在运行命令之前手动下载Precompiled Binaries for Windows之一并将其复制到输出目录(例如bin\x86\Debug
)。
一个更简单的解决方案可能是将DbContext
放在非UWP项目中,并在生成类之后将它们复制到UWP项目中。
关于sqlite - 当为UWP使用Scaffold-DbContext时,出现“无法加载DLL'sqlite3'”,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40139382/