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CHAPTER 4 CATCHING AND DEBUGGING ERRORS
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Connect your Windows Phone device to your developer workstation using a USB cable. To confirm that your device is properly connected and recognized by the Zune software, click the phone icon at the bottom left corner of the Zune Welcome screen, as indicated by the arrow in Figure 4 11.
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Figure 4 11. Clicking the phone icon in Zune software 5. When you click the phone icon, the Zune software will display detailed information about your device, as shown in Figure 4 12.
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Figure 4 12. Windows Phone device detail page in Zune Now you are ready to actually register your device. 6. Go to the Windows Start menu, select All Programs Windows Phone Developer Tools, and select Windows Phone Developer Registration, as shown in Figure 4 13.
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Figure 4 13. Windows Phone developer registration A Windows Phone developer registration form will display, as shown in Figure 4 14. 7. Enter the ID and password that you used to register for a Windows Phone Marketplace account in Step 1.
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Figure 4 14. Windows Phone developer registration To confirm that your phone is properly registered, go to http://developer.windowsphone.com/ and log in. Once logged in, click Account and select DEVICE REGISTRATION from left side menu, as shown in Figure 4 15. You should see a list of the devices you have registered.
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Figure 4 15. Device registration page In the following section, you will learn tips and tricks to make your life easier when you begin to debug and test using a real device.
TIPS AND TRICKS: DEBUGGING ON A DEVICE
Here are a few things that you should keep in mind to make your life easier and save you time when you re debugging an application on a live Windows Phone. 1. When debugging it is best to disable screen time-out, especially if you are debugging through a complex program that takes a long time. On the Windows Phone device, go to Settings Lock & Wallpaper and set the screen time-out to never. Remember to come back to reset the screen time-out to other than never so you don t waste your battery. When you try to debug in the Windows Phone 7 device, you will get the error message shown here. And when you click No, you will see an Access Denied message in your Error List window. This is because your device is locked due to time-out. To avoid this problem during the debugging, you would want to disable time-out on the device by following Step 1. To resolve this issue, simply unlock your device and restart in debug mode in Visual Studio.
CHAPTER 4 CATCHING AND DEBUGGING ERRORS
3. When the Zune application is not started, you will receive the error Zune software is not launched. Retry after making sure that Zune software is launched in the Visual Studio Error List Window.
Handling Device Exceptions
In the following section, you will learn to capture device-specific exceptions. You will be using the accelerometer device as an example to properly handle unexpected exceptions by catching AccelerometerFailedException. AccelerometerFailedException can occur if the accelerometer device on the phone is broken. Also the exception can occur if the device throws unexpected error caused internally by Microsoft Window Phone framework. Figure 4 16 displays the basic UI of the CatchDeviceExceptionDemo project that you will be building.
CHAPTER 4 CATCHING AND DEBUGGING ERRORS
Figure 4 16. CatchDeviceException UI
Creating the CatchDeviceExceptionDemo Project
To set up the CatchDeviceExceptionDemo project, follow the steps you ve used for previous examples in this book. 1. 2. Open Microsoft Visual Studio 2010 Express for Windows Phone on your workstation. Create a new Windows Phone Application by selecting File New Project on the Visual Studio command menu. Select the Windows Phone Application template, name the application CaptureAccelerometerData, and click OK. In order to use the accelerometer, add an assembly reference to Microsoft.Devices.Sensors by right-clicking the References folder in Solution Explorer, and choose Microsoft.Devices.Sensors from the Add Reference window, as shown in Figure 4 17.
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