Question

Check the code.

class DynamicObj : BaseObj {} class BaseObj {}  class clientCode  {    List<DynamicObj> GetFilteredObjs(List<BaseObj> baseList)     {         // I want to return the sublist of baseList which only have DynamicObj.         List<DynamicObj> dList = baseList.FindAll(                                           delegate(BaseObj bo){        // Del1                                           return bo is DynamicObj;                                           }).ConvertAll<DynamicObj>(                                              delegate(BaseObj bo){     // Del2                                               return bo as DynamicObj;                                              });        } } 

Now it might be a silly question, But my code will have to loop objects 2 times,once for Del1 loop and once for Del2 loop.

Is there any straight way? C# 2.0 only.

Answer 1

Sure:

IEnumerable<DynamicObj> GetDynamicObjects(IEnumerable<BaseObj> baseList) {     foreach(BaseObj baseObj in baseList)         if(baseObj is DynamicObj)             yield return (DynamicObj)baseObj; }  List<DynamicObj> dynamicList = new List<DynamicObj>(GetDynamicObjects(...));