Jesse Liberty

Windows Phone Tutorial

In a recent posting I showed how to create a quick OData service using Entity-Framework Code-First and SQLCE4.  In this posting I’ll show how to create a simple Windows Phone client to interact with that service.

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Windows Phone Tutorial

In Part 1 of this mini-series we created the layout for a calculator. In Part 2, we filled in the event handlers for the buttons.  In this third and final part we’ll review the code for the calculator and we’ll add a click sound for each button press. 

Let’s start by looking at the simple underlying logic.  We examined the DisplayNumber property and its backing DependencyProperty in the previous posting. 

The rest is simply a matter of keeping track of when the user is entering a new number (e.g., if the user enters 56 + 35 we want to consider 35 a new number, but not the six following the five).  To keep things simple we’ll force the user to hit the equal sign between each pair of numbers.

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Windows Phone Tutorial

In Part 1 of this mini-series we created the layout for a calculator. In this part, we’ll take a look at the event handlers required to make the buttons works. 

When the user clicks a button an event is raised. You can register a method to “handle” that event – that is you can set up your program so that when the user clicks your button a specific method is invoked.

There are a number of ways to register a method to an event. One of the easiest ways to do this is to click on the Button in the Designer and then to click on the event  you’re interested in in the Properties window. To see the events, you need to click the events button in the upper right hand corner, as shown in the figure.

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