如何从动态对象中检索字段

Question

我知道可能已经问过这个标题，但是这些解决方案建议使用ExpandoObject这对我没用。

我读过：

1. access properties from anonymous types
2. dynamic does not contain a definition for a property

我正在使用Entity Framework 6，我有一个匿名对象（取决于一些不同的表），我必须使用动态对象。

如何从动态对象中检索字段？

public void main()
{
    dynamic caller = new ExpandoObject();
    caller = CustomerServices.GetByCallerId(callerId);
    DateTime CallDateTime = caller.CallDateTime; // Cause the Error
    int CallerId = caller.CallerId; // Cause the Error
}

public dynamic GetByCallerId(string callerId)
{
    dynamic customerCall = new ExpandoObject();        
    using (MehrpouyanEntities dbContext = new MehrpouyanEntities())
    {
        customerCall = dbContext.Customers.Where(r => r.LandlinePhone1 == callerId || r.LandlinePhone2 == callerId || r.MobilePhone1 == callerId || r.MobilePhone2 == callerId).Select(r=>new {Caller = "myCaller", CallerId = r.Id, Name = r.Name, PhoneNumber = callerId, Address = r.Address, CallDateTime = DateTime.Now}).FirstOrDefault();
        return customerCall;
    }
}