Write validation code that looks like this:
bool passed = employee.Enforce()
.When("Age", Compares.IsGreaterThan, 45)
.When("Department", Compares.In, deptList)
.IsValid();
if(passed)
{
SomeProcess();
}
For background read this blog post http://activeengine.wordpress.com/2010/09/26/janga-a-validation-framework-with-a-fluent-api/