无法将项添加到固定大小的数组异常 [英] An item cannot be added to a fixed size Array exception

问题描述

大家好，

当尝试通过wcf服务将具有引用属性的实体添加到另一个实体时，会抛出以下异常：

When trying to add an entity that has a reference property to another entity via a wcf service, the following exception is being thrown:

用户代码未处理System.Data.EntityException

  Message =无法在实体类型SAG.Taskflow.Common.Model.WorkflowType上设置字段/属性WorkflowInstances。有关详细信息，请参阅InnerException。

  Source = System.Data.Entity

System.Data.EntityException was unhandled by user code
  Message=Unable to set field/property WorkflowInstances on entity type SAG.Taskflow.Common.Model.WorkflowType. See InnerException for details.
  Source=System.Data.Entity

WorkflowInstance是使用WorkflowType属性添加的实体的类型。 WorkflowType具有  ICollection< WorkflowInstance>属性。

the WorkflowInstance is the type of the entity that is being added with a WorkflowType property. WorkflowType has a ICollection<WorkflowInstance> property.

请注意，第一次添加项目不会引发问题，    ICollection< WorkflowInstance>正确设置了WorkflowType。但是当第二次添加实例时，会抛出异常。

Note that adding the item the first time doesn't raise the problem, the  ICollection<WorkflowInstance> of the WorkflowType is being set correctly. But when adding the instance the second time, the exception is being thrown.

推荐答案

请你在这里发一些代码吗？

Could you please post some code here?

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