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Here are all needed namespaces: --------------------- using System; using System. Is there a way to prevent the user from leaving a tab on a Tab Control until all the controls on that tab have finished validating? Another approach would be to somehow cancel the pending validating event when the user selects another tab page. I can setup a tab page leave event, but to what benefit? According to MSDN events happen in following order: Focus events occur in the following order: 1.. I would allow user to fill pages in the order he/she prefers and jump between them at will. Being able to do that might help for my particular circumstances. For certain control, once it has focus, it will validate its data for closing, leaving, etc.. So the only problem when changing pages is when all the child controls on the form have no focus, then swith pages will not trigger the child controls' validating events.Computer system validation (sometimes called computer validation or CSV) is the process of documenting that a computer system meets a set of defined system requirements.Validation of computer systems to ensure accuracy, reliability, consistent intended performance, and the ability to discern invalid or altered records is a critical requirement of electronic record compliance, as described in the FDA 21 CFR 11.10(a) and EMA Annex 11, Section 4.To swith back to the original tabpage, you may use a variable to store the original page index.Do like this: int orginal_index=0; private void tab Control1_Selected Index Changed(object sender, System.Is there any way I can disable this validation errors on controls till user tries to submit the form? Error Content, you can add , Binds Directly To Source="True" and it will always show the first error and won't "lie to you" about errors that have already been corrected.
Event Args e) Thank you for your patience and cooperation. The problem I am experiencing is when a control fails its validating event and the user clicks another tab things get messy. I guess maybe I should have asked only how to prevent a user from leaving a tab page. You can combine this with Validating event, where you can set Cancel=true to prevent further events after Validating. Generally speaking, I would suggest to reconsider whole validation scheme you use now - whatever unusual things you are trying to do. Ideally, I think the Hi Dennis, Based on my understanding, you want to validating all the controls on the tabpage before switch pages. Drumm" Is there a way to prevent the user from leaving a tab on a Tab Control until all the controls on that tab have finished validating? Ideally, I think the Dennis, I expect that while you are executing code in Leave event your other page cannot receive focus (even if can, there will be no interaction possible if you don't call App. Hence, if your validation in Leave fails you can always go back to original page and select / focus corresponding control. The problem I am experiencing is when a control fails its validating event and the user clicks another tab things get messy.If you have any questions or concerns, please feel free to post it in the group. Best regards, Jeffrey Tan Microsoft Online Partner Support Get Secure!- This posting is provided "as is" with no warranties and confers no rights.