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New “How Do I” Videos Released on Entity Framework & WPF
26 August 09 10:18 AM

Yesterday we released a couple more videos onto the Visual Basic Developer Center on building WPF data-entry forms with Entity Framework: How Do I: Hook Up and Display Validation in WPF using Entity Framework? How Do I: Build a WPF Master-Detail Data Read More...

Postedby Beth Massi | 4 Comments    

Filed under: Visual Basic, WPF, VS2008, Videos, DevCenter, Data, Entity Framework

Using the ReportViewer with ADO.NET Data Services and Entity Framework
19 August 09 09:57 PM

The Winforms ReportViewer in Visual Studio Pro will allow you define client reports with a variety of data sources. If you’re not familiar with creating client-side reports using the ReportViewer, take a look at these videos: How Do I: Create a report Read More...

Postedby Beth Massi | 12 Comments    

Filed under: VS2008, DevCenter, Article, Entity Framework, ADO.NET Data Services, Reporting

Auto Access to non-Indexed Collections : Or How I Learned to Stop Worrying and Love the VB Compiler
14 August 09 04:26 PM

I just finished a couple more How Do I videos on using EF with WPF using VS2008 SP1 (they’ll be published soon) and while I was translating my VB code to C# I stumbled upon an error in C# that does not happen in VB. This of course got me curious and so Read More...

Postedby Beth Massi | 2 Comments    

Filed under: Visual Basic, VS2008, DevCenter, Article, Entity Framework

Filtering Entity Framework Collections in Master-Detail Forms
16 July 09 05:18 PM

Last post I talked about how to get WPF data binding to work with master-detail entity collections. I had a couple readers ask me how they could filter the child collection instead of bringing them all down so in this post I’d like to show how you could Read More...

Postedby Beth Massi | 2 Comments    

Filed under: WPF, LINQ, VS2008, DevCenter, Article, Entity Framework

Implementing Validation in WPF on Entity Framework Entities
07 July 09 05:14 PM

I’ve blogged before about implementing validation on LINQ to SQL classes as well as how to customize the display of error messages in WPF . In this post I want to show how you can use these same techniques to validate entities coming from the Entity Framework Read More...

Postedby Beth Massi | 13 Comments    

Filed under: Visual Basic, WPF, VS2008, DevCenter, Article, Entity Framework

Using the WPF ObservableCollection with EF Entities
08 May 09 03:29 PM

The ObservableCollection is a special WPF collection that provides proper notifications to the UI when items are added, removed, or the list is refreshed because it implements INotifyCollectionChanged . It’s common to use this collection (or inherit from Read More...

Postedby Beth Massi | 12 Comments    

Filed under: Visual Basic, WPF, LINQ, VS2008, DevCenter, Article, Data, Entity Framework

Notifying the UI when Entity References Change in Lookup Comboboxes
04 May 09 07:51 PM

Last week I wrote about how to data bind WPF lookup comboboxes to entities returned from the Entity Framework. I described that the key to this type of binding is setting the SelectedItem to the object reference itself on the navigation property instead Read More...

Postedby Beth Massi | 6 Comments    

Filed under: Visual Basic, WPF, VS2008, DevCenter, Article, Data, Entity Framework

Data Binding WPF Lookup Combobox Values to EF Entities
30 April 09 07:57 AM

It’s extremely common to have to hook up lookup tables on your data entry forms in order to populate foreign keys in a database. I’ve talked about how to do this in Winforms and WPF with Datasets and LINQ to SQL before: How Do I: Create a Lookup Combobox Read More...

Postedby Beth Massi | 5 Comments    

Filed under: Visual Basic, WPF, LINQ, VS2008, DevCenter, Article, Data, Entity Framework

OBA Part 1 - Exposing Line-of-Business Data
03 February 09 02:23 PM

Last post I talked about the high-level architecture of our O ffice B usiness A pplication for the new Northwind Traders. There are a lot of different architecture options to consider when building an OBA. OBA is all about using Microsoft Office with Read More...

Postedby Beth Massi | 11 Comments    

Filed under: VS2008, DevCenter, Article, Data, Entity Framework, ADO.NET Data Services, OBA

What's New in Visual Studio 2008 SP1 - Client and Data Features
11 September 08 12:51 PM

Last night I spoke at East Bay.NET UG on some of the new features in Visual Studio Service Pack 1 focusing on client and data. I did a whirlwind tour of new SQL 2008 data types and Sync Services enhancements , ADO.NET Entity Framework , ADO.NET Data Services Read More...

Postedby Beth Massi | 6 Comments    

Filed under: Visual Basic, WPF, Speaking, VS2008, Community, SQL Server, ClickOnce, DevCenter, Office, Data, Entity Framework