There is already an open DataReader associated with this Connection which must be closed first

When i run my MVC(C#,use entity Framework+MySql) project, it show that:There is already an open DataReader associated with this Connection which must be closed first. And the error code is:

[assembly: EdmRelationshipAttribute("blogModel", "cid", "cls", System.Data.Metadata.Edm.RelationshipMultiplicity.One, typeof(blog.Models.cls), "news", System.Data.Metadata.Edm.RelationshipMultiplicity.Many, typeof(blog.Models.news), true)] [assembly: EdmRelationshipAttribute("blogModel", "uid", "users", System.Data.Metadata.Edm.RelationshipMultiplicity.One, typeof(blog.Models.users), "news", System.Data.Metadata.Edm.RelationshipMultiplicity.Many, typeof(blog.Models.news), true)]
[XmlIgnoreAttribute()]     [SoapIgnoreAttribute()]     [DataMemberAttribute()]     [EdmRelationshipNavigationPropertyAttribute("blogModel", "cid", "cls")]     public cls cls     {         get         {             return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<cls>("blogModel.cid", "cls").Value;         }         set         {             ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<cls>("blogModel.cid", "cls").Value = value;         }     }     /// <summary>     /// 没有元数据文档可用。     /// </summary>     [BrowsableAttribute(false)]     [DataMemberAttribute()]     public EntityReference<cls> clsReference     {         get         {             return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<cls>("blogModel.cid", "cls");         }         set         {             if ((value != null))             {                 ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedReference<cls>("blogModel.cid", "cls", value);             }         }     }      /// <summary>     /// 没有元数据文档可用。     /// </summary>     [XmlIgnoreAttribute()]     [SoapIgnoreAttribute()]     [DataMemberAttribute()]     [EdmRelationshipNavigationPropertyAttribute("blogModel", "uid", "users")]     public users users     {         get         {             return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<users>("blogModel.uid", "users").Value;         }         set         {             ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<users>("blogModel.uid", "users").Value = value;         }     }     /// <summary>     /// 没有元数据文档可用。     /// </summary>     [BrowsableAttribute(false)]     [DataMemberAttribute()]     public EntityReference<users> usersReference     {         get         {             return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<users>("blogModel.uid", "users");         }         set         {             if ((value != null))             {                 ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedReference<users>("blogModel.uid", "users", value);             }         }     }      #endregion 

THis code is in the model file xx.Designer.cs,I want to know how to end the GetRelateReference or close DataReader, there no DataReader in xx.Designer.cs. and when i add MultipleActiveResultSets=true to connection string in web.config, i try again, it show me: The format of the initialization string does not meet specifications, how i can fix this problem?

/// 请使用应用程序配置文件的"blogEntities"部分中的连接字符串初始化新 blogEntities 对象。     ///      public blogEntities() : base("name=blogEntities", "blogEntities")     {         this.ContextOptions.LazyLoadingEnabled = true;         OnContextCreated();     }      /// <summary>     /// 初始化新的 blogEntities 对象。     /// </summary>     public blogEntities(string connectionString) : base(connectionString, "blogEntities")     {         this.ContextOptions.LazyLoadingEnabled = true;         OnContextCreated();     }      /// <summary>     /// 初始化新的 blogEntities 对象。     /// </summary>     public blogEntities(EntityConnection connection) : base(connection, "blogEntities")     {         this.ContextOptions.LazyLoadingEnabled = true;         OnContextCreated();     }      #endregion <pre lang="c#">

Tags: Entity Framework, MySQL, MVC3