实体框架和谓词生成器 - 谓词在SQL查询中被忽略

I'm having a problem with EF and Predicate Builder. I've been through all the instructions and I'm pretty sure I'm doing everything right, but when I run SQL Profiler and inspect the query going to the database, it's ignoring my predicates and getting every record in the table, and this table is currently up to about 600,000 rows so it slows things down a little. My predicates then get applied after the database has queried.I'm having a problem with EF and Predicate Buil