A WP7 databound graph control

May 30, 2012 3 Comments

For a project we are working on, we needed a simple (and free) WP7 graph usercontrol. The data which the usercontrol visualizes needs to be databound and each time new data arrives, the graph should update itself on-the-fly .In the following tutorial we’ll show how to create such a control from scratch (make note that normally this should also work in Silverlight or WPF projects).

A demo-solution of this tutorial can be downloaded here.

Learning to cook with WP 7.5 data (a book review)

December 8, 2011 3 Comments

Recently I received a review copy of the “Windows Phone 7.5 Data Cookbook” by Ramesh Thalli from Packt Publishing (ISBN 978-1-84969-122-2). This book, divided in 8 chapters, shows how simple it is to write data-driven programs WP7 applications.

What follows is an extensive review of this book.
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Filed under Uncategorized Tagged with c#, code, data binding, ebook, twitter, wp7, wp7 app remote url caching webclient, xaml

New WP 7.5 ebook review copy arrived

December 7, 2011 1 Comment

I just received a review copy of a soon to be published book, titled “Windows Phone 7.5 Data Cookbook” by Ramesh Thalli from Packt Publishers. I will put up a review of it soon. However, I can already hint, after quickly flicking through the pages, that many who liked its unofficial predecessor “Silverlight 4 Data Services Cookbook” by Gill Cleeren and Kevi Dockx will also like this one a lot. If you can’t wait for my review, check out a sample chapter (chapter 2 on using Isolated Storage for data storage) here.

Filed under Uncategorized Tagged with book, c#, code, data binding, ebook, review, tutorial, wp7

XML-databinding in WPF using Blend 4

May 20, 2011 Leave a comment

This tutorial shows how easy it is to use XML-databinding in Blend without writing a single line of code and mostly using the drag-and-drop magic of Blend. We will create a very simple rss-reader that shows the content of a single rss-feed. This post was inspired by the great talk by Isabel Gomez Miragaya and Katrien De Graeve they gave at TechDays 2011 Belgium titled “Designing and Building a Windows Phone 7 Application end-to-end” (video of the talk). Read more of this post

Filed under Uncategorized Tagged with blend, data binding, listbox, silverlight, wpf, xaml, xml

Using enum flags to write filters in Linq

February 14, 2011 5 Comments

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

February 14, 2011 2 Comments

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. Read more of this post

Filed under Uncategorized Tagged with c#, data binding, listbox, silverlight, silverlight 4, tutorial, wpf

Adding buttons to databound listbox items in WPF

February 8, 2011 9 Comments

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.

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