如何通过ASP.NET显示弹出对话框并获取弹出窗口的值

So this is what i'm trying to do, i have a web application that deletes a physical file and the file record in the database. I am trying to find a way to prompt the user to see whether they want to delete the record in the db if the physical file is missing ...So this is what i'm trying to do, i have a web