Arthur Rump Arthur Rump - 9 months ago 162
ASP.NET (C#) Question

ASP.NET 5, EF 7 and SQLite - SQLite Error 1: 'no such table: Blog'

I followed the Getting Started on ASP.NET 5 guide about Entity Framework 7 and I replaced MicrosoftSqlServer with Sqlite, the only difference in the code is in Startup.cs:

.AddDbContext<BloggingContext>(options => options.UseSqlite("Filename=db.db"));

When I run the website and navigate to /Blogs, I get an error:

Microsoft.Data.Sqlite.SqliteException was unhandled by user code

ErrorCode=-2147467259 HResult=-2147467259 Message=SQLite Error 1:
'no such table: Blog' Source=Microsoft.Data.Sqlite

SqliteErrorCode=1 StackTrace:
at Microsoft.Data.Sqlite.Interop.MarshalEx.ThrowExceptionForRC(Int32 rc,
Sqlite3Handle db)
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader(CommandBehavior
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteDbDataReader(CommandBehavior
at System.Data.Common.DbCommand.ExecuteReader()
at Microsoft.Data.Entity.Query.Internal.QueryingEnumerable.Enumerator.MoveNext()
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at System.Linq.Enumerable.d__1`2.MoveNext()
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at Microsoft.Data.Entity.Query.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at EFGetStarted.AspNet5.Controllers.BlogsController.Index() in d:\arthur\documents\visual studio
18 InnerException:

I understand this as if there is no table called 'Blog', but when I open the .db file in DB Browser for SQLite, there actually is a table called 'Blog':

Screenshot from DB Browser for SQLite showing a table called 'Blog'

Does SQLite require other changes in the code, or is this an error in the SQLite connector for Entity Framework?

Answer Source

It is very likely the database actually being opened by EF is not the file you are opening in DB Browser. SQLite use the process current working directory, which if launched in IIS or other servers, can be a different folder than your source code directory. (See issues and

To ensure your db file is in the right place, use an absolute path. Example:

public class Startup
    private IApplicationEnvironment _appEnv;

    public Startup(IApplicationEnvironment appEnv)
        _appEnv = appEnv;
    public void ConfigureServices(IServiceCollection services)
                options => { options.UseSqlite($"Data Source={_appEnv.ApplicationBasePath}/data.db"); });