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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    
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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    
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Master-Detail Data Binding in WPF with Entity Framework
14 July 09 04:24 PM
Today I thought I would talk about a really common scenario in data applications, creating a master-details (one-to-many) data entry form. I’ve written about WPF data binding and Entity Framework a lot in the past: Posts: Master-Details with Entity Framework Read More...
Postedby Beth Massi | 16 Comments    
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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    
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New “How Do I” Video Series Released
01 July 09 05:28 PM
I just released 3 new videos onto the VB Dev Center starting a new series on how to do WPF data binding with Entity Framework using Visual Studio 2008 Service Pack 1 . This is a “no frills” WPF series that focuses on data so you won’t see any other tools Read More...
Postedby Beth Massi | 7 Comments    
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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    
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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    
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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    
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Programming Entity Framework Book
17 February 09 06:11 PM
Julie Lerman's Programming Entity Framework book just arrived today! I've been skimming around it all day and so far Chapter 8 is my favorite but I'm sure once I get to Chapter 14 that will take the cake :-) Thanks Julie! (especially for all the great Read More...
Postedby Beth Massi | 3 Comments    
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ADO.NET Data Services - Intercepting Queries and Adding Validation
21 January 09 08:53 PM
Last few posts I've been building a WPF client against ADO.NET Data Services, if you missed them: Using ADO.NET Data Services ADO.NET Data Services - Building a WPF Client ADO.NET Data Services - Enforcing FK Associations and a Fix for Deleting Entities Read More...
Postedby Beth Massi | 6 Comments    
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Using ADO.NET Data Services
09 January 09 07:52 PM
This week I worked through a good article on getting started with ADO.NET Data Services (a.k.a Astoria) called Using ADO.NET Data Services . If you're not familiar with the technology it's basically a framework for exposing your data models via RESTful Read More...
Postedby Beth Massi | 32 Comments    
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Master-Details with Entity Framework Explicit Load
10 December 08 04:45 PM
Unlike LINQ to SQL, in Visual Studio 2008 Service Pack 1 explicit loading is the default behavior in the Entity Framework. When a query is executed within the Entity Framework, the entities returned by the query are fully accessible, but any associated Read More...
Postedby Beth Massi | 21 Comments    
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Channel 9 Interview: ADO.NET Data Services in Visual Studio 2008 SP1
21 October 08 01:17 PM
In this interview Saaid Kahn, a Program Manager on the Visual Studio Pro Tools team (and former member of the VB Team), shows us how to create an n-tier application against a database using ADO.NET Data Services (Astoria) and an Entity Data Model, both Read More...
Postedby Beth Massi | 4 Comments    
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Editing Data from Two Tables in a Single DataGridView
15 October 08 06:31 PM
I've had a lot of questions lately on how to display data from two separate tables in the database into a single DataGridView for editing. It sure would be nice if all our data was in a single table, but in reality most of the time it's not. Basically Read More...
Postedby Beth Massi | 24 Comments    
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First Day at SDN Conference
07 October 08 03:28 AM
I'm here in the Netherlands in a town called Noordwijkerhout near Amsterdam at the SDN Conference with a lot of great speakers and sessions . I took these shots while the attendees were in session. There's good food, great vendors and lots of entertainment Read More...
Postedby Beth Massi | 4 Comments    
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Attachment(s):SDCDay1.zip
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