Question

我正在使用ASP.NET MVC构建一个Web应用程序。我也打算访问一个远程MySQL数据库。想保留实体框架。

我想做的是访问控制器中的上下文。使用vanilla数据库解决方案可以毫无问题地工作。但是，既然我正在访问远程数据库，它似乎无法正常工作。与数据库的连接是有效的-它实际上可以正确迁移和播种。但是，当我尝试访问上下文成员时，该应用程序将失败。

Web.config

<connectionStrings>
    <remove name="DBName" />
    <add name="DBName" connectionString="server=1.2.3.4;port=1234;user id=DBAdmin;password=DBPass;database=DBName;integrated security=True" providerName="MySQL.Data.MySqlClient" />
</connectionStrings>
<system.data>
    <DbProviderFactories>
        <remove invariant="MySql.Data.MySqlClient" />
        <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.9, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
    </DbProviderFactories>
</system.data>
<entityFramework>
    <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6">
        <parameters>
            <parameter value="v11.0" />
        </parameters>
    </defaultConnectionFactory>
    <providers>
        <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.9.9, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
        <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
</entityFramework>

Context.cs

[DbConfigurationType (typeof (MySql.Data.Entity.MySqlEFConfiguration))]
public class Context : DbContext {
    public Context () : base ("name=DBName") {
        Database.SetInitializer (new MigrateDatabaseToLatestVersion <Context, System.Data.Entity.Migrations.DbMigrationsConfiguration <Context>> ());
    }

    public DbSet<Software> Softwares { get; set; }
}

SoftwareController

public class SoftwareController : Controller {
    public ActionResult Index() {
        using (Context context = new Context ()) {
            List<Software> softwares = context.Softwares.ToList ();

            return View (softwares);
        }
    }
}

错误

字典中不存在给定的键。

源错误

列出软件= context.Softwares.ToList（）;

堆栈跟踪

[KeyNotFoundException：字典中不存在给定的键。] System.Collections.Generic.Dictionary`2.get_Item（TKey键）+12769097 MySql.Data.MySqlClient。<> c。<。cctor> b__2_7（MySqlConnectionStringBuilder msb，MySqlConnectionStringOption发送者）+16 MySql.Data.MySqlClient.MySqlConnectionStringBuilder.get_Item（字符串关键字）+28 MySql.Data.MySqlClient.MySqlConnectionStringBuilder.GetConnectionString（布尔值includePass）+298 MySql.Data.MySqlClient.MySqlConnection.get_ConnectionString（）+41 System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.b__12（DbConnection t，DbConnectionInterceptionContext`1 c）+10 System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch（TTarget目标，Func`3操作，TInterceptionContext拦截上下文，Action`3执行，Action`3执行）+72 System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.GetConnectionString（DbConnection连接，DbInterceptionContext拦截上下文）+361 System.Data.Entity.Internal.InternalConnection.GetStoreConnectionString（DbConnection连接）+159 System.Data.Entity.Internal.InternalConnection.OnConnectionInitialized（）+28 System.Data.Entity.Internal.EagerInternalConnection..ctor（DbContext上下文，DbConnection existingConnection，布尔连接拥有）+70 System.Data.Entity.DbContext..ctor（DbConnection现有连接，布尔contextOwnsConnection）+55 System.Data.Entity.Migrations.History.HistoryContext..ctor（DbConnection existingConnection，字符串defaultSchema）+16 MySql.Data.Entity。<> c。<。ctor> b__0_1（DbConnection existingConnection，字符串defaultSchema）+29 System.Data.Entity.Migrations.History.HistoryRepository.CreateContext（DbConnection连接，字符串模式）+37 System.Data.Entity.Migrations.History.d__16.MoveNext（）+737 System.Linq.Enumerable.Any（IEnumerable`1来源）+77 System.Data.Entity.Migrations.DbMigrator.UpdateInternal（字符串targetMigration）+58 System.Data.Entity.Migrations。<> c__DisplayClasse.b__d（）+13 System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists（动作mustSucceedToKeepDatabase）+422 System.Data.Entity.Migrations.DbMigrator.Update（字符串targetMigration）+78 System.Data.Entity.MigrateDatabaseToLatestVersion`2.InitializeDatabase（TContext上下文）+108 System.Data.Entity.Internal。<> c__DisplayClassf`1.b__e（）+76 System.Data.Entity.Internal.InternalContext.PerformInitializationAction（动作）+60 System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization（）+357 System.Data.Entity.Internal.LazyInternalContext.b__4（InternalContext c）+7 System.Data.Entity.Internal.RetryAction`1.PerformAction（TInput输入）+110 System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction（动作1动作）+198 System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase（）+73 System.Data.Entity.Internal.InternalContext.Initialize（）+30 System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType（Type entityType）+16 System.Data.Entity.Internal.Linq.InternalSet`1.Initialize（）+53 System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator（）+15 System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable.GetEnumerator（）+53 System.Collections.Generic.List`1..ctor（IEnumerable`1 collection）+375 System.Linq.Enumerable.ToList（IEnumerable`1源）+54 D：\ Visual Studio \ Projects \ Website Projects \ ProtoSim \ ProtoSim \ Controllers \ SoftwareController.cs中的ProtoSim.Controllers.SoftwareController.Index（）：13 lambda_method（Closure，ControllerBase，Object []）+61 System.Web.Mvc.ActionMethodDispatcher.Execute（ControllerBase控制器，Object []参数）+14 System.Web.Mvc.ReflectedActionDescriptor.Execute（ControllerContext controllerContext，IDictionary`2参数）+157 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext controllerContext，ActionDescriptor actionDescriptor，IDictionary`2参数）+27 System.Web.Mvc.Async。<> c.b__9_0（IAsyncResult asyncResult，ActionInvocation innerInvokeState）+22 System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate（IAsyncResult asyncResult）+29 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod（IAsyncResult asyncResult）+32 System.Web.Mvc.Async.AsyncInvocationWithFilters.b__11_0（）+50 System.Web.Mvc.Async。<> c__DisplayClass11_1.b__2（）+228 System.Web.Mvc.Async。<> c__DisplayClass7_0.b__1（IAsyncResult asyncResult）+10 System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate（IAsyncResult asyncResult）+10 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters（IAsyncResult asyncResult）+34 System.Web.Mvc.Async。<> c__DisplayClass3_6.b__3（）+35 System.Web.Mvc.Async。<> c__DisplayClass3_1.b__5（IAsyncResult asyncResult）+100 System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate（IAsyncResult asyncResult）+10 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction（IAsyncResult asyncResult）+27 System.Web.Mvc。<> c.b__152_1（IAsyncResult asyncResult，ExecuteCoreState innerState）+11 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+29 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.Controller.EndExecuteCore（IAsyncResult asyncResult）+45 System.Web.Mvc。<> c.b__151_2（IAsyncResult asyncResult，控制器控制器）+13 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+22 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.Controller.EndExecute（IAsyncResult asyncResult）+26 System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute（IAsyncResult asyncResult）+10 System.Web.Mvc。<> c.b__20_1（IAsyncResult asyncResult，ProcessRequestState innerState）+28 System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate（IAsyncResult asyncResult）+29 System.Web.Mvc.Async.WrappedAsyncResultBase`1.End（）+49 System.Web.Mvc.MvcHandler.EndProcessRequest（IAsyncResult asyncResult）+28 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest（IAsyncResult结果）+9 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute（）+576 System.Web.HttpApplication.ExecuteStepImpl（IExecutionStep步骤）+132 System.Web.HttpApplication.ExecuteStep（IExecutionStep步骤，布尔值并已完成同步）+163

在ASP.NET Controller中访问上下文的问题

0 个答案: