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I am seeking a method to validate silverlight forms.
That could be very helpful if someone with good experireance to suggest me proper method.
I thought about validation in Binding (NotifyOnValidationError=True, ValidatesOnExceptions=True), but in our project there are custom control and some fields setted manually in code behind.
What we need is to show tooltips when something is wrong and to have a method IsValid for a scope.
I would use the DataForm control using MVVM, this is best practice when developing with Silverlight. You can validate using ComponentModel.DataAnnotations.