Custom Change Tracking Using The Entity Framework

Change tracking is a common feature I find I need to implement in my applications. I like to warn users about the potential loss of data if they cancel without saving changes, and when saving those changes I like to update only those fields in the database that have changed as it's inefficient to update every field.

Interprocess Communication with WCF - Part 2

In Part 1 I showed you how you can use WCF with named pipes to send messages from a client to a server. Now I will show you how we can modify that code to send messages in the other direction, from the server back to the client. We do this by creating a callback interface and referencing it in our service contract. We then implement the callback interface in our client.