Field Validators and Post backs

I have a form which is mainly standard controls and an asp:table which I build in code


It all works fine until I start using field validators

Once I do on clicking my Save button, it performs the validation and shows the validationsummary - BUT this also involves a Post back - so the asp:table is wiped out.


Here is my Save button

                                OnClientClick="return BtnSaveClick()" OnClick="BtnClientSaveClick" Style="display: none" />
                           

and my validation summary

                                ShowMessageBox="false" HeaderText="" ValidationGroup="Servicegrp" />



An example range validator

                                            Text="*" ControlToValidate="ddlCurrentlyUnemployed" MaximumValue="999999" MinimumValue="1"
                                            ValidationGroup="Servicegrp">



and my table