what could i used in my project?

[Manish Arya]

Dear All,

I am using c# with Sql Database.

Please suggest me what am i used in my project?.
I want to create a selection list.Like

One Combo Box and One List Box.
In the database: a table with the name of ItemTable which have some field like: cmbItemType,txtItemCode,txtItemDescription etc.

in combo box there are two items like Gold,Silver.
if i am selected the gold item in the combo box then all the type of item (which is gold) show in the list box.
if i am selected the Silver item in the combo box then all the type of item (which is Silver) show in the list box.

or

Two radio Button and one List Box.
One for Gold
Second for Silver

when one selected then show all the gold item.
when second selected then show all the silver item.


which one am i select pls tell me and how it is possible.