Silverlight & LOB applications

Dennis van der Stelt

Class-A

• Class-A– Kennisprovider– Microsoft development – Training & Coaching– http://www.class-a.nl

• Dennis van der Stelt– Trainer/ coach– Blog: http://bloggingabout.net/blogs/dennis/ – Twitter: dvdstelt

Introducing

Agenda

• SQL Data Services, or not…• .NET RIA Services• Demo

SQL DATA SERVICESACE vs RDBMS

SQL Data Services

SQL Data ServicesSqlConnectionStringBuilder connStringBuilder = new SqlConnectionStringBuilder();connStringBuilder.DataSource = "myserver.data.dev.mscds.com";connStringBuilder.InitialCatalog = "mydatabase";connStringBuilder.Encrypt = true;connStringBuilder.UserID = "flitsservice“;connStringBuilder.Password = "****";

string createTableSql =    @"CREATE TABLE [dbo].[tbl_Person]          (               [FirstName] NVARCHAR(64) NOT NULL,         [LastName] NVARCHAR(64) NOT NULL              CONSTRAINT [personName_PK] PRIMARY KEY CLUSTERED              (                  [FirstName] ASC,                  [LastName] ASC              )          )";

SQL Data Servicesusing (SqlConnection conn = new SqlConnection(connStringBuilder.ToString())){  conn.Open();   using (SqlCommand cmd = conn.CreateCommand())  {    cmd.CommandText = createTableSql;    cmd.CommandType = CommandType.Text;    cmd.ExecuteNonQuery();

cmd.CommandText = "select * from tbl_Person where FirstName = 'Dennis'"; using (SqlDataReader reader = cmd.ExecuteReader()) {  while (reader.Read())  {    Console.WriteLine("First Name: {0}", reader["FirstName"]);  }  reader.Close(); }}

SQL Data Services

OleDb

SQL Data Services

Tabular Data Stream

ADO.NETODBC

SQL Applications

Astoria&

Entity Framework

Java

PH

P

Ru

by

Oth

ers

.NET RIA SERVICES

Vision and goals

• Simplify RIA development– n-tier is hard, and un-natural

• Bring ASP.NET/RAD-style productivity to RIA development– Focus on end-to-end scenarios and solutions

End-to-End Data

• Beyond accessing and editing rows– App-specific custom operations– Data shaping (sorting, paging, filtering)– Rules (validation, authorization, conflict

handing)– Batching and offline

Multi tier application model

Web ApplicationBrowser Rich Internet Application

DB

Services

Other Applications

Data Access Layer

AppLogic

Services

HTMLPresentati

onLogic

Network

Services

DEMO

A Prescriptive Pattern

Application

DB

Services

Data Access Layer

AppLogic

Presentation

Logic

Network

DomainService: CRUD + App Logicclass CatalogIQueryable<Product> GetProducts()void UpdateProduct(Product, Product)void ToggleSale(Product)Validation and authorization rules, Application workflows, …

Data Model class Product

DomainContext: Bindable Dataclass CatalogEntityList<Product> Products { get }void LoadProducts(IQueryable<Product>)void ToggleSale(Product)

class ProductData members + Validationvoid ToggleSale()

Data Model +Metadata +

Shared Code

A Pattern that Scales and Grows

AppLogic

DatabasesADO.NET,ORMs (LTS, EF, …)

CLR Lists/ObjectsRepository(nHibernate, …)

ServicesREST/SOAP(Azure, …)

XML, JSON, Binary

Unit Test Code

What didn’t we cover?

• Authentication– Both Windows & Forms based

• Enhanced SEO capabilities– Not yet fully functional in current bits

• Business application template• Linq2Sql & Azure capabilities• OOB & Offline synchronization

Roadmap

• SQL Data Services– Unknown, only that it supports TDS

• .NET RIA Services– May CTP available, new one in July– PDC09 bits will run on Astoria– First part of 2010 : RTW

Summary

• .NET RIA Services offer– Better n-tier support– Rapid Application Development– A pattern that scales and grows– Services for additional features

And remember, this will run on SDS

questionsResources:• http://silverlight.net/• .NET RIA Services forums• http://bloggingabout.net/blogs/dennis/