how to set edit details of check all conditions in LINQ

Question

Update mode of Register page to edit my details of Page_Load used in try, catch statements

but in try statement i wrote multiple conditions to check either conditions is true or false 

MY PROBLEM IS: page_load of try statement is check first query only after goes to catch statement directly and an error is Sequence contains no elements

i want to check all conditions in page_load using LINQ Queries.