c# - EF7 - How to get values from DbSet before change -

i try value of entity stored in dbset before changed code , before saved. however, when try linq single statement changed value. i'm using ef7.

here's code:

dbset<entity> dbset = context.dbset; entity ent = dbset.single(x => x.id == id); ent.firstname = "new name"; entity entitybeforechange = dbset.single(x => x.id == id);  //here want entity old values, if that's important need read without modifying instance  context.savechanges(); 

hope clear enough , can help

you can detach entity context. keep in mind you'll have pull context before update other, attached entity.

dbset<entity> dbset = context.dbset; entity ent = dbset.single(x => x.id == id); entity entitybeforechange = dbset.single(x => x.id == id);  context.entry(entitybeforechange).state = entitystate.detached; // severs connection context ent.firstname = "new name";  context.savechanges();