I'm trying to use the generated code to search on string column. I'm converting my value in my vb.net application to all upper case. I need to change the value of the collection I'm searching on. How can I use that in a FieldLikePredicate?

FieldLikePredicate has a CaseSensitiveCollaction property. When set to true, you will get a case-insensitive compare. That means that LLBLGen will generate an UPPER(SomeField) SQL. i.e.:

// This filter will perform a case-insensitive search
FieldLikePredicate filter = new FieldLikePredicate(EventFields.Name, "test".ToUpper());
filter.CaseSensitiveCollaction = true;