public static DesignPatternDB ConnectDB()
{
if (db == null)
{
db = new DesignPatternDB();
}
return(db);
}
public ViewModel()
{
entity = DesignPatternDB.ConnectDB();
ob_BindingList = new BindingSource();
}
public AbstrackViewModel()
{
db = DesignPatternDB.ConnectDB();
objectBindingList = new BindingSource();
LoadObjectSet();
}