DomainContext加载(DomainContext Load)

 我尝试通过domainservice（async）在代码行中加载一个实体，如： 
 
context.Load<Book>(
context.Books.Where(b => b.BookID == 1),
(s, e) =>
{
    _book = e.Results;
},
null);
 
 但我得到以下错误：类型'SilverlightApplication1.Book'不能在泛型类型或方法'System.ServiceModel.DomainServices.Client.DomainContext.Load（System.ServiceModel.DomainServices.Client.EntityQuery）中用作类型参数'TEntity'。 ，System.Action>，object）'。 没有从'SilverlightApplication1.Book'到'System.ServiceModel.DomainServices.Client.Entit的隐式引用转换 
 
 怎么解决？ 

I tried to load a entity by domainservice(async) in on line of code like:
 
context.Load<Book>(
context.Books.Where(b => b.BookID == 1),
(s, e) =>
{
    _book = e.Results;
},
null);
 
But I got following error: The type 'SilverlightApplication1.Book' cannot be used as type parameter 'TEntity' in the generic type or method 'System.ServiceModel.DomainServices.Client.DomainContext.Load(System.ServiceModel.DomainServices.Client.EntityQuery, System.Action>, object)'. There is no implicit reference conversion from 'SilverlightApplication1.Book' to 'System.ServiceModel.DomainServices.Client.Entit
 
how to fix it?

原文：https://stackoverflow.com/questions/3644485