/*SPEntityState SPObjState = SPEntityState.Unchange;*/
/**/
public PhoneCatalog()
{
InitializeComponent();
using (CuaHangBanDiDongV1Entities phoneManagementDBEntities = new CuaHangBanDiDongV1Entities())
{
var showData = from db in phoneManagementDBEntities.SanPhams select db;
dataGridView1.DataSource = showData.ToList();
}
}