匿名类型和获取方法范围外的值 [英] Anonymous type and getting values out side of method scope

问题描述

我在.net框架4.0中构建了一个asp.net网站，我坚持的方法，应该调用一个.cs类，并获得查询结果回到这里是我的方法调用和方法

I am building an asp.net site in .net framework 4.0, and I am stuck at the method that supposed to call a .cs class and get the query result back here is my method call and method

helper cls = new helper();
  var query = cls.GetQuery(GroupID,emailCap); 

2：辅助类中的方法：

2: Method in helper class:

public IQueryable<VariablesForIQueryble> GetQuery(int incomingGroupID, int incomingEmailCap)
    {
        var ctx = new some connection_Connection();
        ObjectSet<Members1> members = ctx.Members11;
        ObjectSet<groupMember> groupMembers = ctx.groupMembers;

        var query = from m in members
                    join gm in groupMembers on m.MemberID equals gm.MemID
                    where (gm.groupID == incomingGroupID) && (m.EmailCap == incomingEmailCap)
                    select new VariablesForIQueryble(m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap);
                    //select new {m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap};

        return query ;
    }

我试过上面的代码与IEnumerable也没有任何运气。这是VariablesForIQueryble类的代码：

I tried the above code with IEnumerable too without any luck. This is the code for class VariablesForIQueryble:

public class VariablesForIQueryble
{
    private int _emailCap;
    public int EmailCap
    {
        get { return _emailCap; }
        set { _emailCap = value; }
    }`....................................

4：和构造函数：

4: and a constructor:

 public VariablesForIQueryble(int memberID, string memberFirst, string memberLast, string memberEmail, int? validEmail, int? emailCap)
    {

            this.EmailCap = (int) emailCap;
            .........................

    }

我似乎无法得到查询结果，首先它告诉我匿名类型的问题，我读了一个类后：链接文字;现在它告诉我的参数不支持的构造函数。现在我是一个中间开发人员，有一个简单的解决方案，或者我必须回到.aspx.cs页面。

I can't seem to get the query result back, first it told me anonymous type problem, I made a class after reading this: link text; and now it tells me constructors with parameters not supported. Now I am an intermediate developer, is there an easy solution to this or do I have to take my query back to the .aspx.cs page.

推荐答案

使用反射解决问题：

 //Method in helper class 
 public IEnumerable GetQuery(int incomingGroupID, int incomingEmailCap)
        {

            var ctx = new some_Connection();
            ObjectSet<Members1> members = ctx.Members11;
            ObjectSet<groupMember> groupMembers = ctx.groupMembers;

            var query = from m in members
                        join gm in groupMembers on m.MemberID equals gm.MemID
                        where ((gm.groupID == incomingGroupID) && (m.EmailCap == incomingEmailCap)) //select m;
                        select new {  m.MemberID,  m.MemberFirst,  m.MemberLast, m.MemberEmail,  m.ValidEmail, m.EmailCap };
                        //select new VariablesForIQueryble (m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap);
            //List<object> lst = new List<object>();

            //foreach (var i in query)
            //{
            //    lst.Add(i.MemberEmail);
            //}
            //return lst;
            //return query.Select(x => new{x.MemberEmail,x.MemberID,x.ValidEmail,x.MemberFirst,x.MemberLast}).ToList();
            return query;
        }

B：捕捉对象和使用反射转换这些对象的代码

B:Code to catch objects and conversion of those objects using reflection

  helper cls = new helper();
  var query = cls.GetQuery(GroupID,emailCap);      
 if (query != null)
                    {

                        foreach (var objRow in query)
                        {

                            System.Type type = objRow.GetType();
                            int memberId = (int)type.GetProperty("MemberID").GetValue(objRow, null);
                            string memberEmail = (string)type.GetProperty("MemberEmail").GetValue(objRow, null);
    }
    else
    {
    something else....
    }

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