c# generics won't grant nominee form constraints

is illusory interpretation category c# such that

class genericcollection<t> : somebasecollection<t> where t : delegate

i couldn't life me accomplish final night .net 3.5. i attempted using

delegate, delegate, action<t> func<t, t>

it seems me should tolerable way. i'm perplexing exercise possess eventqueue.

i finished adult only doing [primitive estimation mind you].

internal nominee vacant dwork();

class eventqueue {
    private queue<dwork> eventq;
}

but following i remove ability reuse same construction opposite forms functions.

thoughts?