protected void btn_IssueBook_Click(object sender, EventArgs e) { if (Session["type"] == "Student") { int bid = Convert.ToInt32(txt_Bookid.Text); int sid = Convert.ToInt32(Session["loginid"]); LibraryDAL dal = new LibraryDAL(); int issueid = dal.IssueBook(bid, sid); Response.Redirect("~/IssuedDone.aspx?issueid=" + issueid); } else { lbl_msg.Text = "Admin Cannot Issue Book"; } }