Remove photo from folder

 string file_name = DropDownList1.Text;    

        string path = Server.MapPath("~/upload/");  

        FileInfo file = new FileInfo(path + file_name);

        if (file.Exists)

        {

            file.Delete();

            Label1.Text = " file deleted successfully";

            Label1.ForeColor = System.Drawing.Color.Green;

        }

        else

        {

            Label1.Text = " This file does not exists ";

            Label1.ForeColor = System.Drawing.Color.Red;

        }