linq to sql like

 var predicate = PredicateBuilder.True<Shop_Product>();

  1.  predicate = predicate.And(c => c.CommodityType.StartsWith(temmp));

  2.  predicate = predicate.And(c => c.CommodityType.Contains("0102"));

 3.    predicate = predicate.And(c => c.CommodityType.IndexOf("0102")>-1);
 

　　以上是三种like 实现