Validator message disappeared after post back

From: "HipHop" <MSDNNospam191@xxxxxxxxxxxxx>
Date: Fri, 22 Dec 2006 15:25:36 -0500

Hi,
I have a compositecontrol contain a textbox (txtPhoneNumber) and a
RegularExpressionValidator.
I tested in a page, the validation seems work fine until post back, the
validation message disappeared after post back while the text in the phone
number still remain the invalid format.

Could anybody please help me.
Thanks.

.

Follow-Ups:
- RE: Validator message disappeared after post back
  - From: Walter Wang [MSFT]

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