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I've got a form that contains different custom fields. During vallidation of field1 I need to know the value of field2.

Does anyone know how to access the field? Or perhabs it is possible to connect the custom conntenttype (which contains the custom fields) to a c# class (which contains a validation logic)?

Thanks a lot!

share|improve this question
Form as in InfoPath form? or just the default Add/Edit forms of SharePoint? – Zork Mar 29 '12 at 13:56
I'm using the default Add/Edit-Forms. – MOI Apr 17 '12 at 6:31

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