Linq

Question

what is the difference between table tab= databaseobject .getTable (); and list cust=databaseobject.customers.Tolist();

Cassie Mod · Answer

List can hold duplicate objects ArrayList is just for compatibility with older versions of the framework where IList didn't exist Dictionary is used to store pairs of key/value. You cannot have duplicate keys. Hashtable is basically a List with no possibility of duplicates (and better performance in some scenarios) Stack stores objects in order they were added (through Push() ) and when you retrieve an object (through Pop() ) it is removed from the stack in a LIFO manner. Queue quite similar to a Stack except it is FIFO.