Question

I have one class as below:

public class test
{    
     int i;

     string str;

     Socket s;

     DateTime dt;
}

and am creating object of this class as below

public void collection()
{

   test t1=new test{i=1,str="string1", s=soc1, dt=DateTime.Today() };

   test t2=new test{i=2,str="string2", s=soc2, dt=DateTime.Today() };

   test t3=new test{i=3,str="string3", s=soc3, dt=DateTime.Today() };

   ArraList a=new ArrayList();

   a.Add(t1);

   a.Add(t2);

   a.Add(t3);

}

and am adding all these objects(t1,t2,t3) into an array. Now, how can i get all socket members in object array using linq???

Answer 1

I think you should cast your ArrayList to a collection of type ‘test’

so

a.Cast<test>.Select(t => t.s);

Will give you the result.

Or if you think your ArrayList might also contain other types of obejct, you can use

a.OfType<test>.Select(t => t.s);

Note: Make sure Socket is a publicly accessible property and depending on the framework you use, consider using a Generic collection