BLToolKit：它支持IQueryable嗎？

Question

通常與BLToolKit我通過以下方式獲取從DB數據：

using (DbManager db = new MyDbManager()) 
{ 
    IList<MyObjects> objects = db 
     .SetCommand(query)//sometimes with additional parameters 
     .ExecuteList<MyObjects>() 
     ; 
} 

我想有能力做以下：

using (DbManager db = new MyDbManager()) 
{ 
    IQueryable<MyObjects> qObjs = db 
     .SetCommand(query)//sometimes with additional parameters 
     .ExecuteQuery<MyObjects>()// here I don't want query actually to be executed 
     ; 

    // ... another logic, that could pass qObj into other part of program 

    IList<MyObjects> objects = qObjs 
     .Where(obj=>obj.SomeValue>=SomeLimit) // here I want to put additional filters 
     .ExecuteList() // and only after that I wan't to execute query and fetch results 
     ; 
} 

是可能的解決辦法與修改一部開拓創新查詢-string（修改WHERE部分），但有時它很複雜。

有沒有簡單的方法可以做到這一點？

謝謝。任何想法都歡迎！

Answer 1

using (DbManager db = new MyDbManager()) 
{ 
    IQueryable<MyObjects> qObjs = 
     from p in db.GetTable<MyObjects>() 
     //sometimes with additional parameters 
     select p; 

    // ... another logic, that could pass qObj into other part of program 

    IList<MyObjects> objects = qObjs 
     .Where(obj=>obj.SomeValue>=SomeLimit) // here I want to put additional filters 
     .ToList() // and only after that I wan't to execute query and fetch results 
     ; 
} 

Answer 2

如果你想要IQueriable，你必須使用Linq。 BlToolkit.Linq和BlToolkit.Data.Linq必須導入。

 IQueryable<DataModel.Object> query = db.Object; 


     If ((int)cmb_somthing.SelectedValue) > 0 { 

      int ID = (int)cmb_somthing.SelectedValue; 
      query = query.Where(m=> m.ID = ID); 

     } 
     query = query.Where(m=> m.Date >= StartDate && 
           m.Date <= EndDate);