Data Points: Revisiting System.Transactions

The Microsoft® . NET Framework versions 1. 0 and 1. 1 represented major changes in software development. However, one important thing that did not change much was support for distributed transactions.

John Papa

MSDN Magazine February 2005

John Papa

MSDN Magazine June 2001

Hi,

This is frustrating, and I don't know how to solve it.

I have a strange problem. I am adding a LinqDatasource object, and set the context:

        protected void LinqDataSource_ContextCreating(object sender, LinqDataSourceContextEventArgs e)
        {
            e.ObjectInstance = new KaruselaDataContext(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
        }

Then I get this error:
The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

On web.config I already have this:
<add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>

NOTE: The datacontext is in a different project (DLL proect) where I added a refernce to System.Data.Linq.

is there another way adding a refernce to a web project? or only though teh web.config?

Thanks.

Julie Lerman shows database administrators how to limit access to databases from the Entity Framework by allowing it to work only with views and stored procedures instead of tables-without impacting application code or alienating developers.

Julie Lerman

MSDN Magazine August 2010

Let go of your traditional relational database thinking if you want to understand how Windows Azure Table storage works, says Julie Lerman. Luckily for you, she's done the hard work to grasp the new concepts and help you get up to speed.

Julie Lerman

MSDN Magazine July 2010

LINQ's ability to project randomly shaped data into anonymous types can be a blessing and a source of frustration, says Julie Lerman. It's great when you just need to grab a special view of your data, but it can be problematic in certain circumstances. She explains what the limitations are and how to get around them.

Julie Lerman

MSDN Magazine May 2010

Did you know that by precompiling LINQ queries you might actually be degrading your app's performance if you're not careful? Julie Lerman explains how to ensure you're not re-precompiling queries each time and losing the expected performance benefits across post-backs, short-lived service operations and other code where critical instances are going out of scope.

Julie Lerman

MSDN Magazine March 2010

In this month's column, John Papa shows you how the DataForm control works and how it can be customized.  He presents in detail a sample application that uses several features to bind, navigate, edit and validate data using the DataForm.

John Papa

MSDN Magazine October 2009

In this month's column, the author shows how binary encoding works, the effect it has on an application's performance, and how it behaves by demonstrating it in action.

John Papa

MSDN Magazine August 2009

Silverlight 2 applications are restricted to running inside a browser. However, Silverlight 3 applications can run inside the browser or out. Here we build a social networking app as a standalone Silverlight 3 application.

John Papa

MSDN Magazine June 2009

ADO.NET Data Services and Silverlight make a powerful combination, but to make them work well together, there are a few things you need to understand. Here, John Papa explains.

John Papa

MSDN Magazine April 2009

Here we build a syndicated news reader application to illustrate the use of isolated storage and data syndication in Silverlight.

John Papa

MSDN Magazine February 2009

John Papa tackles questions about calling services from Silverlight 2 applications.

John Papa

MSDN Magazine November 2008

Here John Papa demonstrates how to build a Silverlight 2 user interface that communicates through WCF to interact with business entities and a database.

John Papa

MSDN Magazine September 2008

Systems that handle failure without losing data are elusive. Learn how to achieve systems that are both scalable and robust.

Udi Dahan

MSDN Magazine July 2008

Here we build a solution that fits the Entity Framework into an n-tier architecture that uses WCF and WPF and the MVP pattern.

John Papa

MSDN Magazine July 2008

The Entity Framework is a hot topic, but how do you know when to use EntityClient, Object Services, Entity SQL, or LINQ? Find out here.

John Papa

MSDN Magazine May 2008