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I would like to enquiry about manual TextBox validation invocation. For the case when user has opened the form and then tries proceeding to the next step and leaves TextBoxes empty. Is it possible to trigger validation manually in that case? I tried just set IsValid to false but it didn't work.
And just out of curiosity, could someone please explain how TextBoxExtension changes TextBox border? I couldn't find any UI related code in terms of TextBoxExtension, pretty sure wasn't searching in the right place. Thanks!
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I would like to enquiry about manual TextBox validation invocation. For the case when user has opened the form and then tries proceeding to the next step and leaves TextBoxes empty. Is it possible to trigger validation manually in that case? I tried just set IsValid to false but it didn't work.
And just out of curiosity, could someone please explain how TextBoxExtension changes TextBox border? I couldn't find any UI related code in terms of TextBoxExtension, pretty sure wasn't searching in the right place. Thanks!
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