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Look this tutorial for validation rules: http://wpftutorial.net/DataValidation.html The error message is inside the tooltip, but you can put the error message in a storyboard and animate it. Like showing up only, if an error occured. This is how inline validation is used at websites. Don't ask me how I did it. It's some years ago, but feasible. I think ...


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WPF has great validation. I find it to be intuitive with many options. And it conserves screen space. Programming is not that easy but you UX people don't really care about programmers. Actually it is nice for programmers as it enforces rules at the data layer. The business / data layers does not have care how enforcement of those rules bubble to the ...


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You may like error persistence but a data model that must to support invalid data is problematic at best. What if you had a date validation and date column in the database? If it was not a valid date period you could not even persist it to date column in SQL. AutoCorrect Why did you let them enter an invalid character in the first place? Don't accept ...


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If you are validating the input in real-time, you can call the user's attention to it (similar to your suggestion in Option 3) by highlighting the field (red borders, big arrows, flashing lights, etc) and explaining why (via tool-tip or word balloon). If your users frequently aren't looking at the screen while typing, you could also sound an alert, though I ...


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Ignore invalid character is the best option. The user is typing that entry when you are making the change so it by far the most likely to be noticed. If you do it when the focus changes, it is much more likely to be ignored. What do you mean error persistence? Is there an option not to persist the input in the database until after they save? If this an ...


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I am guessing you are referring to inline alerts such as the bootstrap alerts which appear in the flow of the document as opposed to floating alerts which are usually absolutely positioned divs appended to the body tag. Anyways, lets get down to it. Floating alerts are good when you want to inform the user of certain action they have taken. For example, if ...



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