never mind - I denormalised my table, adding a HasAmount field, and populated the field when the TermTypeID was changed. Then when the object gets marshalled to the server, there is no need to worry about associated objects.
On Thu, Mar 11th, 2010 at 12:19 PM, [email protected] wrote: > Hi all, > > In my Silverlight application, I am currently using a domain service > with a Custom Validation > attribute on my meta class. > > In this particular case, I have to reference a field from another > associated table to determine > whether a field is required. > > My class is called Term. > > It contains a reference field TermTypeID, and a decimal field > Amount. > > In the TermType table I have a field called HasAmount (bool). > > If the TermType selected requires an amount to be entered against the > Term, the HasAmount > property is true against that particular term type. > > So if I follow the TermType to get the HasAmount field, and if the > HasAmount field is true, then the > user is required to enter an Amount in the term.Amount field. > > Within my dbml file (LinqToSql), I have a reference between the Term > table and the TermType > table. > > My validation routine looks like this: > > public static ValidationResult ValidateTerm(Term currentTerm) > { > > if (currentTerm.TermType.HasAmount) > { > if (currentTerm.Amount == null) > { > return new ValidationResult("Amount is required for the > selected Term Type."); > } > else if (currentTerm.Amount <= Decimal.Zero) > { > return new ValidationResult("Amount must be a positive > value."); > } > > } > } > > > When the CustomValidation executes on the client, the TermType object > is populated, and the > ValidateTerm method is executed correctly. > > But when it executes on the server side, the TermType object is not > populated (null). > > Does anyone know what the "correct" way to approach this sort of > requirement is with Custom > Validation? > > Regards, > Tony > > _______________________________________________ > ozsilverlight mailing list > [email protected] > http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight > > > _______________________________________________ ozsilverlight mailing list [email protected] http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight
