Greg Leonardo » Greg Leonardo

Tampa Code Camp Presentations

.NET, ASP.NET, C#, LINQ, WCF No Responses »

Jan 102010

At Tampa Code Camp 2009 I did 3 sessions, one on Linq 4.0, one on WCF 4.0, and an impromptu discussion on TDD. Here are the presentations on Linq 4.0 and WCF 4.0.

LINQ 4.0

WCF 4.0

One Way to Solve Collection Validation in Silverlight 3

.NET, Application, Architecture, Enterprise, General, Silverlight No Responses »

Nov 302009

In one of my current projects I used Datagrid’s with RowDetail forms for editing the ItemSource collection. This created a unique issue with exception throwing from the entities so the form will provide immediate response to the user. This became very difficult to accomplish with the fact that the entities were provided by WCF (the Domain Service – we are not using RIA). Now the issue is that the WCF ONLY provides the implementation of the entity and not the entity itself, so in short terms no exception is thrown to the UI; however we would receive the general service fault exception from the service.

To overcome this I used the shared entity model and included them in both the Silverlight frontend and WCF backend. Now this is great solution; however if the user does not enter the form field well no instant feedback.

So for this opportunity, I created a .Validate method on the object and had it produce an error collection as well as return a true/false.

This option now allowed me to validate the object in ItemSource collection, so now the application can bulk save and evaluate the collection of data rather than one field at a time.

I will post an example of this process in the near future as well as how to do it.

Technorati Tags: Architecture,.NET,Silverlight,XAML

BizTalk 2009

.NET, Application, Architecture, BizTalk, Enterprise, General 1 Response »

Nov 212009

Why BizTalk?

BizTalk 2009 is a message broker SOA tool. It is used to connect disparate systems and provided an entry point for connecting to your customers. BizTalk does come at a cost; however with the “built-in” functionality it can cut development costs.

Some Features:

Retry Capabilities
Transaction Traceability
BAM (Business Activity Monitoring
Reliable (durable) messages
LOB (Line of Business) Adapters to fit most integration points (Siebel, Oracle, HiPPA)

What’s New in BizTalk 2009 (Captured from http://www.microsoft.com/biztalk/en/us/whats-new.aspx)

BizTalk Server 2009 introduces enhancements and new features in four main areas:

Support for the latest platforms from Microsoft including server, database and development environment.
Enhanced developer productivity and new application life cycle management experience for development teams.
New capabilities for implementing agile SOA integration solutions across heterogeneous technologies and Line of Business systems.
Enhanced B2B and RFID capabilities to allow the implementation of flexible end-to-end supply chain management and asset tracking solutions.

Microsoft Security Essentials

.NET, Application, Architecture, Enterprise, General No Responses »

Oct 022009

Microsoft has released a free version of anti-virus software. You can download it at:

http://www.microsoft.com/security_essentials/

I recommend it as I currently use it on my Windows 7 machine.

Barcamp Tampa

.NET, Code Camp, General No Responses »

Sep 272009

I had the opportunity to spoke this weekend at Barcamp Tampa. I did a my presentation on LINQ 4.0 and a session on Silverlight (was impromptu). My Silverlight session was video taped, so I will post as soon as it is available.

I was joined by Joe, Russ, Nikita (did mobile market place), and Stan (open source with Microsoft) – was a great event and very productive, so you may want to catch it next year.

To follow Barcamp Tampa – http://barcamptampabay.org/