Validation Rule: At least one property is required

Validation Rule: At least one property is requiredhttps://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2009/06/03/validation-rule-at-least-one-property-is-required.aspxToday i stump again upon the same problem . I wanted to throw a validation exception only if both of my properties do not have value. So lets create a validation rule for this one. More info on how we create custom validation rules can be found here ValidationelCommunityServer 2.1 SP3 (Build: 20423.1)