Validating multiple controls updating apple computers

NET 2.0,3.5,4.0, AJAX, JQuery, JSON, XML, XSLT, ADO.

When you bind the model to the context in WPF you may notice validation fires off prior to any data not being entered. From the above markup you can make out that there are four required field validators and out of the four validators three have validation group property defined.Also there is no way to specify multiple validaiton group using the Validation Group property of the button control.Because of this, I can't find a way to access it in code-behind (since Password Box.Password is not a dependency property by itself) in the manner expressed in this solution.

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I have 2 textboxes, I need to make sure at least one textbox has a value in it.

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