c# - 使用LINQ从表的10个字段中选择3个字段

Question

我的查询:

public List<Book> GetAllBook()
{
    return (from c in this.LDEntities.Book
             select new
             {
                 c.IdBook,
                 c.NameBook,
                 c.Athour
             }).ToList();
}

错误:

Cannot implicitly convert type 'AnonymousType#1' to 'System.Collections.Generic.List

什么是正确的代码？

更新:我从Entity Framework in Layered Architectures使用。

Answer 1

尝试这个:

public List<Book> GetAllBook() {     

    var q = (from c in this.LDEntities.Book              
             select new Book() 
             { 
                 IdBook = c.IdBook, 
                 NameBook = c.NameBook, 
                 Athour = c.Athour }).ToList();     
    return (q); 
} 

换句话说，创建Book类型的集合，而不是匿名类型的集合。