How to use predicates with LINQ to query CRM 2011 -

i trying use linqkit predicate. getting following code when trying compile.

public void testpredicate(guid[] productids) {     var predicate = predicatebuilder.false<product>();     foreach (var productid in productids)     {         var tempguid = productid;         predicate = predicate.or(p => p.productid== tempguid);     } }      var query = p in context.createquery("product")             .asexpandable().where(predicate) select p; } 

error 1: 'system.linq.iqueryable' not contain definition 'where' , best extension method overload 'system.linq.queryable.where(system.linq.iqueryable, system.linq.expressions.expression>)' has invalid arguments

error 2 argument 2: cannot convert 'system.linq.expressions.expression>' 'system.linq.expressions.expression>

please suggest me need fix it.

thanks

i believe using dynamics crm. following should work you.

var query = p in context.productset         .asexpandable().where(predicate) select p;