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First Look: WCF And WF Services In The .NET Framework 4.0 And "Dublin"

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

We explore some of the key new WCF and WF features in .NET Framework 4.0 as well as the new application server capabilities provided by the "Dublin" extensions.

Aaron Skonnard

MSDN Magazine January 2009

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More Related Resource Links

VS 2010: Entity Framework 4.0 and WCF Data Services 4.0 in Visual Studio 2010


Elisa Flasko takes you through a sample weblog application to demonstrate how new improvements in Entity Framework and WCF Data Services work together to simplify the way data is modeled, consumed and produced in Visual Studio 2010.

Elisa Flasko

MSDN Magazine April 2010

Geneva Framework: A Better Approach For Building Claims-Based WCF Services


Here we introduce Microsoft Code Name "Geneva," the new framework for building claims-based applications and services, and federated security scenarios.

Michele Leroux Bustamante

MSDN Magazine December 2008

Speak Up: Support Dictation With Text Services Framework


Learn how to make your apps speech-aware by supporting Windows Speech Recognition and the Text Services Framework.

Eric Brown

MSDN Magazine July 2007

WSE Security: Protect Your Web Services Through The Extensible Policy Framework In WSE 3.0


This article describes the WSE policy framework, which allows you to describe constraints and requirements a Web service must enforce. Discussions include security scenarios in WSE 3.0 and extending the framework with custom constraints and requirements.

Tomasz Janczuk

MSDN Magazine February 2006

Got Directory Services?: New Ways to Manage Active Directory using the .NET Framework 2.0


System.DirectoryServices is a managed code layer on top of Active Directory Service Interfaces, and you can employ it to better manage Active Directory from your code. Here Ethan Wilansky helps you get started.

Ethan Wilansky

MSDN Magazine December 2005

Web Services: Extend the ASP.NET WebMethod Framework with Business Rules Validation


In an earlier article the authors showed how to build a custom WebMethods extension that provides XML Schema validation, a function that is lacking in ASP.NET. In the process they established a foundation for enforcing business rules during the deserialization of XML data. The technique, which is described in this article, uses declarative XPath assertions to test business rule compliance.In building this business rules validation engine, the authors integrate the validation descriptions into the WSDL file that is automatically generated by the WebMethod infrastructure. Finally, they demonstrate how to extend wsdl.exe, the tool that generates WebMethod proxy/server code from WSDL files, to make use of their extensions.

Aaron Skonnard and Dan Sullivan

MSDN Magazine August 2003

Web Services: Extend the ASP.NET WebMethod Framework by Adding XML Schema Validation


WebMethods make the development of XML Web Services easier by encapsulating a good deal of functionality, but there is still a lot of underlying XML processing that you have to be responsible for. For example, WebMethods do not validate messages against the implied schema. Because they are not validated, the response that's returned can result in unintended consequences. To address this, the authors extend the WebMethod framework by adding XML Schema validation through a custom SoapExtension class.

Aaron Skonnard and Dan Sullivan

MSDN Magazine July 2003

Sample: Connecting to a .NET Framework Source Using Business Connectivity Services in Office 2010

Explore the code in this visual how-to article as you learn to learn how to use Visual Studio 2010 to create a BCS external content type.

Connecting to a .NET Framework Source Using Business Connectivity Services in Office 2010 (Visual Ho

Watch the video and explore code as you learn how to use Visual Studio 2010 to create a BCS external content type. The external content type then connects to a .NET Framework assembly that uses XLINQ to provide read-write access to data that is stored in a simple XML data file.

Video: Connecting to a .NET Framework Source Using Business Connectivity Services in Office 2010

Watch this visual how-to video as you learn to create an Office 2010 Business Connectivity Services External Content Type based on a .NET Framework source.

Possible security issue with .NET framework and web services


We have a web service that runs fine on our Windows Server 2008 R2 test system.

However, it does not work on a production machine at a customer site.

It is installed using:

  • WISE installer 32 bit
  • .NET 2.0 Framework
  • Machine has UAC disabled

Some observations:

  • Communication between client and server seems to work fine
  • Can't write to c:\ProgramData
  • Can't connect to database using ODBC connector.
  • Can't log messages to the Windows Event Log (we get an exception that we don't have privileges)

This makes us suspect security settings on the machine. Enabling trace logs on the ODBC Manager shows no errors. The Windows Event Viewer doesn't indicate any problems.

Can anyone suggest what is wrong? Is there a tool we can use to discover the source of the problems.

WCF - Entity Framework - POCO - Caching with multiple services



We have an architecture where we use Entity Framework with POCO, and the code-first approach (no edmx file). In order to explain the problem I have to explain a little bit about our architecture:

We have one layer which contains Routing Services (for load balancing and security), and a layer of Data Access Services. All services are hosted in IIS.

What we would like is to have caching of our (Entity Framework) Context, so we made the context static, and thought it would be shared between the different services. Well, it's not... 

The scenario (where we noticed the problem) was that we did some changes to an transaction through the Transaction services. We then did a search through the Search services, and found that the data wasn't updated. Well, actually the data are updated, and saved to the DB, it's just that the "Search Context" is out of sync. When retrieving the data from the Transaction service, we got the correct data, as expected.

So, after hours of googling I still haven't found a solution to the problem, and I'm hoping to get some response here.

Multiple database support with Entity Framework

One of the features introduced in Entity Framework is being database independent. Which mean each database provider can support Entity Framework by implementing its provider.

This feature allows you build applications independent from the underplaying database provider. In this post I'm going to show how to build an application that support multiple databases using same conceptual model made by Entity Framework.

Installing and Uninstalling Services

Installing and Uninstalling Services.Unlike most projects you create in Visual Studio .NET, Windows Service projects cannot be run directly from the development environment by pressing F5. This is because the service in the project must be installed before the project can run.

You can quickly install your service application by using a command line utility called InstallUtil.exe.

Getting Started with Windows SharePoint Services

Of all of the capabilities of SharePoint, I thought I would start with the most basic installation - as a corporate intranet. It is likely that we will need to discuss some of the elements of SharePoint as we go along, so this also gives us the opportunity to review these elements for future reference.

Before going into too much detail, I would like to point out that you can try the core SharePoint framework (known as Windows SharePoint Services or WSS) for free. On Microsoft's Web site you can download a trial version of Virtual PC 2004 (VPC). Using VPC, you can install the Windows 2003 Evaluation Kit and the WSS add-on. This combination will give you 45 days to evaluate the setup.

Building a Searchable Phone Directory with Windows SharePoint Services

I want to continue to build out the intranet site we've started in our previous articles. A standard item in every intranet is a staff/employee list. Most companies implementing Windows SharePoint Services (WSS) are large enough to have a database that contains all employees. We will use the aggregation features of SharePoint to include data from this database into our intranet.

Creating a Generic Entity Framework 4.0 Repository

With .NET 4.0 right around the corner, I thought it would be cool to download Visual Studio 2010 beta 2 and start playing around with the next release of Entity Framework.

The initial release of Entity Framework came with a great deal of criticism. To make matters worse, there was a large uproar when it was rumored that Microsoft would be abandoning LINQ to SQL, in favor of Entity Framework. This was because, at the time, many developers felt Entity Framework was an inferior technology to LINQ to SQL. To set things right, Microsoft proactively moved forward with improving Entity Framework, in time for the 4.0 release of the .NET Framework. This is good news because my initial impressions, so far, have been nothing but positive.
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