problem in using querystring

Hi ,
I am using a datalist which will display the title fetched from database and onclick it will redirect to eventlist-Description.aspx with query string value as "GalleryTitle" It is working good My query is the galerytitle is having spaces within it so I am in a need to use somw other like session instead of queystring pls help to solve this issue <asp:DataList ID="datalist1" runat="server" Width="957px"> <ItemTemplate> <ul> <li class="event-list-col-1"><%#Eval("EventYear")%></li> <li class="event-list-col-2"><a href='eventlist-Description.aspx?gallerytitle=<%#Eval("GalleryTitle") %>'><%#Eval("EventTitle")%></a> </li> </ul> <div class="clear"></div> </ItemTemplate> </asp:DataList>
eventlist-Description.aspx< ...