If i understand your problem, you have some validators in a page and just some of them should show their validation message in the validation summary...

You can use the ValidationGroup property. Define it in the validation summary and in the validators you want to show the error messages.

<asp:RequiredFieldValidator ... ValidationGroup="group1">*</asp:RequiredFieldValidator> // 1
<asp:RequiredFieldValidator ... ValidationGroup="group2">*</asp:RequiredFieldValidator> // 2

<asp:ValidationSummary ... ValidationGroup="group1" />

In this case, only the validator 1 error message will be shown in the validation summary.

Hope this solves your problem Smiley

(sorry about my english...i'm portuguese Wink )