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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

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

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

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    

Filed under: Visual Basic, WPF, LINQ, DevCenter, Article, Data, N-tier, Entity Framework, ADO.NET Data Services

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    

Filed under: Visual Basic, LINQ, SQL Server, Winforms, DevCenter, Article, Data, Entity Framework