Using enum flags to write filters in Linq

Here’s the premise. Suppose we have a cookbook that contains all possible recipes with their names and needed ingredients. Using Linq it should be easy to query the cookbook and, for example, only show those recipes you can make given one or more ingredients you have at your house. My solution is a) extremely nice or b) very strange, bloated and way wrong. I leave it up to you and make sure to message me if you have a much nicer solution…because franky, I’m not a big fan of what follows (I have the itching sensation that using the correct binary logic I can solve this problem much easier…).

Using Linq to filter a databound listbox in WPF/Silverlight

In this short tutorial I show how to use Linq in order to filter the items shown in a listbox, which in turn is databound to an ObservableCollection.

Suppose we use the listbox created in the previous tutorial where we show the age and name of each user in the collection. All our databinding code-remains the same as before. What we have to add is a new collection in between our original source and the listbox. The in between collection is our Linq-query result. Each time we wish to change our filter, we change the query.

Adding buttons to databound listbox items in WPF

Introduction

In this tutorial I will demonstrate how to create a listbox in WPF which is databound to a collection, we then would like to add a button to each item in the listbox. Clicking this button will button will delete that item from the collection.