我正在尝试使用Entity Framework 6与SQLite,并在尝试使用TransactionScope
时遇到了数据库锁定问题。以下是我的代码:
using (var txn = new TransactionScope())
{
using (var ctx = new CalibreContext())
{
var book = ctx.Books.First(x => x.Id == 2);
var author = ctx.Authors.First(x => x.Id == 3);
book.Authors.Add(author);
ctx.SaveChanges();
}
txn.Complete();
}
第一行var book = ctx.Books.First(x => x.Id == 2);
执行正常。但是当我继续执行下一个操作时,会出现一个异常,提示我的数据库被锁定了。这是我的应用程序配置:
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" />
</startup>
<connectionStrings>
<add name="CalibreContext" connectionString="Data Source=metadata.db" providerName="System.Data.SQLite.EF6" />
</connectionStrings>
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite" />
<add name="SQLite Data Provider" invariant="System.Data.SQLite" description=".Net Framework Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite, Version=1.0.98.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
<remove invariant="System.Data.SQLite.EF6" />
<add name="SQLite Data Provider (Entity Framework 6)" invariant="System.Data.SQLite.EF6" description=".Net Framework Data Provider for SQLite (Entity Framework 6)" type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6, Version=1.0.98.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
</DbProviderFactories>
</system.data>
<entityFramework>
<defaultConnectionFactory type="Calibre.Dal.Ef.SQLiteConnectionFactory, Calibre.Dal.Ef" />
<providers>
<provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6, Version=1.0.98.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
<provider invariantName="System.Data.SQLite" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6, Version=1.0.98.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
</providers>
</entityFramework>
</configuration>
我需要使用
TransactionScope
,因为除了执行数据库操作外,我还需要执行一个文件系统操作,并计划将其添加到同一事务中(当前不存在)。
ctx
没有Connection
属性。 - emilaz