Return Codes From MessageBox in .ASPX ?

[zgraf]

Greetings.

I've created a simple ASPX form that displays a record from a SQL Server
table. I have a "Delete" button on the form. When the user clicks it,
I want to prompt the user with
a message ("Are you sure you want to delete... ?").

I realize the Yes/No Messagebox can be done via Javascript -- but how do
I retrieve the Messagebox return value in my .ASPX page, so I can act on
it (i.e., to perform the delete)?

Got any sample code to demonstrate this?

Is there a better solution here?

ZGRAF