如何在 Entity Framework Core 1.1 中使用 mssqllocaldb？

如何在 Entity Framework Core 中直接使用 localdb？我发现许多演示仅适用于 asp.net 核心。但不适用于控制台或单元测试直接。

演示代码：

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc();

    var connection = @"Server=(localdb)\mssqllocaldb;Database=EFGetStarted.AspNetCore.NewDb;Trusted_Connection=True;";
    services.AddDbContext<BloggingContext>(options => options.UseSqlServer(connection));
}

我的代码：

_fixture.SqlConnectionStr=@"Server=(localdb)\\mssqllocaldb;Database=DailyDbContext;Trusted_Connection=True;MultipleActiveResultSets=true"

var connection = new SqlConnection(_fixture.SqlConnectionStr);
connection.Open();

// Create the schema in the database
using (var context = new DailyDbContext(options))
{
    context.Database.EnsureCreated();
}

抛出异常如下：

堆：

at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at HQF.Tutorials.EntityFrameworkCore.XUnitTest.UnitTest1.Test1() in 

 System.Data.SqlClient.SqlException : A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. 指定的 LocalDB 实例名称无效。

但是 sqlite 工作得很好：

 // In-memory database only exists while the connection is open
 var connection = new SqliteConnection("DataSource=:memory:");

 var options = new DbContextOptionsBuilder<DailyDbContext>()
                .UseSqlite(connection)                   
                .Options;

            // Create the schema in the database
            using (var context = new DailyDbContext(options))
            {
                context.Database.EnsureCreated();
            }