from dropdownlist selected item value respective name to be displayed in listbox

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C#

Note: it is web application using asp.net with C#.

Faculty table as follows

Facid Facname
1 Ram
2 Suresh
3 Vignesh
4 Rajesh


Bthfac table as follows

Bthid Bthid Facid
1 1 1,2,3
2 2 3,4
3 3 2,4

from dropdownlist selected item value respective name to be displayed in listbox.



Run mode screen has follows;
Facid dropdownlist
Listbox


in the dropdownlist i displayed facid from the Bthfac table in that dropdownlist.

for example when i select the facid 1,23 in the dropdownlist, i want to display the facname in the list box.

for that how can i do using asp.net in c#

Run mode example as follows
Facid 1,2,3 (select in the dropdownlist)

i want to display the particular facname in the listbox. listbox shown below

Listbox ram
suresh
vignesh

for that how can i do using asp.net using C#.

Note: it is web application using asp.net with C#.


please help me.

Regards,
Narasiman P.