public void ClassifyControlTypes(List <Control> controls)
{
tableEntities.Clear();
joinEntities.Clear();
foreach (Control c in controls)
{
if (c.GetType() == typeof(TableControl))
{
TableControl tc = (TableControl)c;
tableEntities.Add(tc.GetTableEntity());
}
else if (c.GetType() == typeof(JoinControl))
{
JoinControl jc = (JoinControl)c;
joinEntities.Add(jc.GetJoinEntity());
}
}
}