asp.net - I cannot delete or update multiple record using entity framework -

i want delete multiple record using entity framework cannot delete.

i trying following code

db.filetypewithproducts.where(x => x.productid == proid).tolist().foreach(db.filetypewithproducts.deleteobject); 

in above statement vs 2013 gives error

error   1   'system.data.entity.dbset<filetypewithproduct>' not contain definition 'deleteobject' , no extension method 'deleteobject' accepting first argument of type 'system.data.entity.dbset<filetypewithproduct>' found (are missing using directive or assembly reference?) 

you need use either remove or removerange (at least ef6):

db.filetypewithproducts     .where(x => x.productid == proid).tolist()     .foreach(ft => db.filetypewithproducts.remove(ft));      // need lambda since expected method needs return void. 

or:

db.filetypewithproducts     .removerange(db.filetypewithproducts.where(x => x.productid == proid).tolist());