PersistenceManager pm=PersistenceManagerFactory.Instance().CreatePersistenceManager(pp);

Query q=pm.NewQuery("Product");

q.Filter="ProductID='P001'";

q.Open();

EntityData entity=q.QueryData();

dataGrid1.DataSource=entity;

q.Close();

pm.Close();

public void StoreIntoWarehouse(Form insertForm)

{

     FormDetail detail=insertForm.FormDetail;

     detail.First();

     PersistenceManager pm = PersistenceManagerFactory.Instance().CreatePersistenceManager();

     Transaction tm=pm.CurrentTransaction;

     tm.Begin();

     try

     {

         if(detail.ObjectCount>0)

         {

              do

              {

                   Product product=(Product)pm.FindObjectByPrimaryKey

(detail.ProductID,Type.GetType

("LogisticsDemo.EntityDefinitions.Product"));

                   product.CurrentCount+=detail.InCount;

                   pm.UpdateObject(product);

              }while(detail.Next());

         }

         pm.PersistNewObject(insertForm);

         tm.Commit();

     }

     catch(Exception e)

     {

         tm.Rollback();

         throw e;

     }

     finally

     {

         pm.Close();

     }            

}