请大家帮忙看看,为什么会出错
<script language="VB" runat="server">
sub page_load(Src As Object, E As EventArgs)
Dim conn as OledbConnection
Dim connstr as string
Dim objinsertcmd as OledbCommand
Dim objinsert as string
connstr=System.Configuration.ConfigurationSettings.AppSettings("数据库")
conn=New OledbConnection(connstr)
objinsert="Delete From book_3 Where id_3=@id"
objinsertcmd.parameters.add(New OleDbParameter("@id", OleDbType.Char))objinsertcmd.parameters.item("@id").value=request.querystring("del_id")
conn.open()
objinsertcmd.ExecuteNonQuery()
conn.close()
end sub
</script>