DevForce Community Forum : object custom property http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2009 : object custom property Wed, 22 Apr 2026 07:19:26 -700 Fri, 21 May 2010 17:27:31 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=1830 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ object custom property : Thanks, good point. Will keep... http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6997#6997 Author: bigfish
Subject: 1830
Posted: 21-May-2010 at 5:27pm

Thanks, good point.  Will keep that in mind while working with the app as a user does to determine if we hit that issue....  much appreciated.]]> Fri, 21 May 2010 17:27:31 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6997#6997 object custom property : Sorry not to get back to you quicker,... http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6993#6993 Author: IdeaBlade
Subject: 1830
Posted: 21-May-2010 at 4:32pm

Sorry not to get back to you quicker, but do be aware that the solution you've shown above depends absolutely on the required RentReviewIncomes being in cache at the time the TotalIncome property is accessed. In the asynchronous environment of Silverlight, if they're not there (already), the calculation will simply yield 0.

]]> Fri, 21 May 2010 16:32:54 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6993#6993 object custom property : OK I got it; The partial class... http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6989#6989 Author: bigfish
Subject: 1830
Posted: 21-May-2010 at 4:04pm

OK I got it;
 
The partial class RentReview generated by DevForce allowed me to include a custom propertry (TotalIncome) and business rule as per below;
 
public decimal TotalIncome { get { return getIncomes(); }}
 
private decimal getIncomes()
{
   decimal totalIncome = 0;
   foreach(RentReviewIncome income in RentReviewIncomes)
   {
      totalIncome = totalIncome + (decimal)income.incomeValue;
   }
   return totalIncome;
}
 
As its in the partial class, DevForce won't overwrite the rule on each subsequent regeneration.
RentReviewIncomes is the collection of associated entities of the main RentReview object.
 
Very cool for me, maybe very obvious for hardened developers...
 
Rgds
BigFish
 
]]> Fri, 21 May 2010 16:04:15 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6989#6989 object custom property : Hi guys, I need to sum related... http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6960#6960 Author: bigfish
Subject: 1830
Posted: 19-May-2010 at 1:27pm

Hi guys,
 
I need to sum related objects values to a custom property of parent object to use as a display property in a datagrid source.
 
The equivalent SQL query would look like:
 
SELECT     RR.RentReviewID,
                 RR.ReviewDate,
                 SUM(RRI.IncomeValue) AS TotalIncome
FROM         RentReview RR JOIN
                  RentReviewIncome RRI ON RR.RentReviewId = RRI.RentReviewId
GROUP BY  RR.RentReviewId,
                  RR.ReviewDate
RentReview object has RentReviewIncome as associated object.
 
The query I currently execute is:-
 
var query = Manager.RentReviews
                .Where(a => a.Tenancy.tenancyID == tenancyID)
                .OrderByDescending(a => a.effectiveFromDate)
                .Include("Schedule")
                .Include("RentReviewIncomes");
 
Query(query, callback);
 
This returns associated RentReviewIncome objects, but where to from there?
 
I was hoping something like this custom property on the RentReview object might do the trick, but no.
public decimal TotalIncome { get { return (decimal)RentReviewIncomes.Sum(incomeValue); } }
 
]]> Wed, 19 May 2010 13:27:19 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1830&PID=6960#6960