how to refresh listview using timer?

i have a client-server app, the client will connect to the server,
the server will recieve the msg
and display it in the listview control...

my problem is when the client is disconnected, the data listview is still there,

i want to apply a timer to make the listview refresh..

is it possible?

Why not just clear the listview when the client disconnects?

How does the client get disconnected anyway?

how does the client disconnect?
when the client was taking error
or if you want to disconnect the client

the listview will automatically refresh...

is it possible?