postback hide requirefieldvalidator asp.net

Question

i am working with WepApplication and the problem is i have one textbox with autopostback="true" and some other textboxes and dropdowns with Validators like requirefield n regularexpression etc.. when i Click on "Submit" button,

Form is validated client side and All Requirefiled validators shows but after this problem starts when i changes text on textbox(autopostback=true") all validators are hide... but note one thing i want to fire OnTextChanged event bz if i add CausesValidation="true" it will not call OnTextChanged

so is there any way to show validator(messages) even page autopostbacked....

help me plz.

thanx in advance...

Answer 1

将TextBox的CauseValidation属性设置为true 。