Some thing about Lambda Expression and NHB

LINQ体验(17)——LINQ to SQL语句之动态查询

 example:

代码

            using (EmployeeDBDataContext db = new EmployeeDBDataContext())
            {
               
                var l = db.VW_EMPLOYEEs;
                ParameterExpression param = Expression.Parameter(typeof(VW_EMPLOYEE), "p");
                Expression left = Expression.Property(param, typeof(VW_EMPLOYEE).GetProperty("EMPLID"));
                Expression right = Expression.Constant(emp.EMPLID);
                Expression filter = Expression.Equal(left, right);
                Expression pred = Expression.Lambda(filter, param);
                Expression expr = Expression.Call(typeof(Queryable), "Where",
                                                        new Type[] { typeof(VW_EMPLOYEE) },
                                                            Expression.Constant(l), pred);
                IQueryable<VW_EMPLOYEE> query = db.VW_EMPLOYEEs.AsQueryable().Provider.CreateQuery<VW_EMPLOYEE>(expr);
                return query.ToList();
            }

  

Lambda :

http://www.cnblogs.com/killuakun/archive/2008/08/03/1259389.html

 

http://www.cnblogs.com/terrylee/archive/2008/08/01/custom-linq-provider-part-1-expression-tree.html

 

http://www.cnblogs.com/ninputer/archive/2009/08/28/expression_tree1.html

 

http://www.cnblogs.com/126/archive/2007/08/15/857193.html

   

http://www.cnblogs.com/lyj/archive/2008/03/25/1122157.html

 

Lambda Expression Tree: 

打造自己的LINQ Provider（上）：Expression Tree揭秘

打造自己的LINQ Provider（中）：IQueryable和IQueryProvider

 

Linq To Sql进阶系列（六）用object的动态查询与保存log篇

 

Expression Tree上手指南 （一） ==>

 

NHB

http://www.kontac.net/site/

http://www.cnblogs.com/lyj/archive/2008/11/10/1330542.html