When I use HttpUtility.UrlEncode to encode a Url I end up getting a server error.
ASP.Net code:
NavigateUrl=<%# HttpUtility.UrlEncode(string.Concat(\
You shouldn't encode the entire URL, atleast not the 1st "?" symbol. If you encode the ? too then your application looks for a file with the name & extension "UpdateMember.aspx%3fgroupId%3d0032409901" which doesn't exist.
Probably, this is what you should do.
http://localhost/UITest/MM/UpdateMember.aspx?groupId%3d0032409901