[代码示例]LINQ to Entities查询语句：返回指定的字段

更新： 梦想成为现实：在Enitity Framework中以理想方式实现指定字段查询

using (BlogDbContext context = new BlogDbContext())
{
    return (from b in context.BlogConfigs
            where b.UserName == loginName
            select new { BlogID = b.BlogID, Application = b.Application })
            .ToList()
            .Select(b => new Blog() { BlogID = b.BlogID, Application = b.Application })
            .FirstOrDefault<Blog>();
}

需要注意的是一定要用ToList()，否则会出现下面的异常信息：

System.NotSupportedException : 
The entity or complex type 'Blog' cannot be constructed in a LINQ to Entities query.