因此,我剛剛開始使用System.Data.Sqlite與實體框架6(從Nuget下載最新的System.Data.Sqlite,版本1.0.91.0) 經過一些配置和代碼後,我發現我可以從數據庫中讀取但不知何故寫不起作用。EF 6與System.Data.SQlite SaveChanges()不起作用?
這裏是我的代碼:
using (var context = new InternalDbContext())
{
var demo = context.DemoEntities.Where(d => d.ID == 1).FirstOrDefault();
demo.Name = "TestTest";
context.DemoEntities.Add(new Demo { Name = "Test" });
context.SaveChanges();
}
基本上調用SaveChanges之後,什麼也沒有在數據庫中更新。不過,我可以通過SQlite管理工具手動填充數據來讀取數據庫。
這裏是我的DB模式: Table name :Demo Field: ID - Integer Primary Key AutoIncrement Field: Name - VARCHAR(256)
這裏是我的班
public class InternalDbContext : DbContext
{
public DbSet<Demo> DemoEntities { get; set; }
public InternalDbContext()
{
// Turn off the Migrations, (NOT a code first Db)
Database.SetInitializer<InternalDbContext>(null);
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
// Database does not pluralize table names
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
}
[Table("Demo")]
public class Demo
{
public long ID { get; set; }
public string Name { get; set; }
}
的App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<sectionGroup name="common">
<section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />
</sectionGroup>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<common>
<logging>
<factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4net">
<arg key="configType" value="FILE-WATCH" />
<arg key="configFile" value="log4net.config" />
</factoryAdapter>
</logging>
</common>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Common.Logging" publicKeyToken="af08829b84f0328e" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.2.13.0" newVersion="1.2.13.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
<provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
</providers>
</entityFramework>
<connectionStrings>
<add name="InternalDbContext" connectionString="Data Source=.\testdb.sqlite" providerName="System.Data.SQLite.EF6" />
</connectionStrings>
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite.EF6" />
<add name="SQLite Data Provider" invariant="System.Data.SQLite.EF6" description="Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />
</DbProviderFactories>
</system.data>
</configuration>
如果任何人都可以點我到正確的方向,即」 d太棒了,非常感謝
尼克
您可以檢查任何SQLLite日誌,以查看a)是否請求觸及數據庫和b)是否生成了一些錯誤? –
我不知道通常爲SQLite生成日誌的位置。你有什麼建議嗎?謝謝! – littlejedi