Inside Paras' Head

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  • Blog Post: How to send email from your Windows Phone 8.1 app

    As part of the API changes made in the new Windows Phone 8.1 XAML programming model, the EmailComposeTask - and several other tasks - that were available in the Microsoft.Phone.Tasks namespace in Windows Phone 8 are no longer available. Most of these have been replaced with a new way of performing the...
  • Blog Post: Xamarin Forms Shared project template error

    The new Xamarin Forms Shared Project Template has a bug which causes the Windows Phone build to fail out of the box. You might see an error like: The 'ProductID' attribute is invalid - The value 'b79569cb-1898-4dab-9173-afe40fa8559c' is invalid according to its datatype 'http://WPCommontypes:ST_Guid...
  • Blog Post: How to make your Windows Phone app vibrate?

    There are 2 simple ways to make your Windows Phone app vibrate the device. The first method makes use of the VibrateController class in the Microsoft.Devices namespace: VibrateController vibrateController = VibrateController.Default; vibrateController.Start(TimeSpan.FromSeconds(2)); vibrateController...
  • Blog Post: System.UnauthorizedAccessException: Access is denied

    So you are coding up your next big app and cruising along, but suddenly you face an error like the following: {System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System...
  • Blog Post: 1 Million Downloads, Part-2, App Statistics

    This is Part-2 in a series of blog posts I am writing to detail my experiences to get to 1 Million downloads on Windows Phone. In this post, for the first time ever, I will make public detailed info around my app statistics which will show you how my top apps have performed since launch. I will also...
  • Blog Post: 1 Million Downloads

    I am happy to report that my apps have surpassed the 1 Million download mark on Windows Phone. This is the first post in a series of blog posts I will be writing about my lessons learned, mistakes made, best practices, monetization and promotion practices, among other things, so keep an eye out! I...
  • Blog Post: Announcing Windows Phone Day in Portland, OR

    I am proud to announce the Windows Phone Day in Portland, Oregon on Saturday, May 3, 2014. Learn to make amazing Windows Phone apps at the Windows Phone Day event and you may win big for launching your apps in the store. Join Nokia Developer Ambassador Paras Wadehra & Windows Phone Development MVP...
  • Blog Post: Windows Phone App Promotion

    Well, it has been a while since I've run a promotion for all of you Windows Phone developers out there, so I am giving away a Nokia Lumia 520 to one lucky developer who writes and publishes a new app in the Windows Phone store by Mar-31. This low memory device is the most popular Windows Phone in the...
  • Blog Post: Sorting a List in C#

    I often receive emails from developers asking for help with their development conundrums. One of the common questions I get asked, especially from someone learning C# and writing their first app, is how to sort a list of items. It's quite simple actually; there are 2 ways you can sort a list, and both...
  • Blog Post: The build stopped unexpectedly because of an internal failure.

    If you ever receive the following error while doing development in Visual Studio, don't fret, it just means your system is running low on memory. Close a few apps, or restart Visual Studio and/or your system, if need be, and then try rebuilding your app and it should work like a charm! The build stopped...
  • Blog Post: "New Developer New Phone" Promotion

    If you've been on the fence about writing apps for Windows Phone, or you've dabbled in it but need that extra help or push to make it, or if you made the app but just haven't launched it in the store, or even if you have apps in other stores and want to port them over to Windows Phone, this is the promotion...
  • Blog Post: Quality Gets Rewarded

    So you've been toiling around until the wee hours of the night every day to ensure there are no bugs in your app. You've listened to your users and updated your apps accordingly. You made your app stand above your competition! Well, now it is time to reap the rewards for your efforts. If you have an...
  • Blog Post: Want to win a $1000?

    Who wants to win a $1000 just for building a Windows Phone or Windows 8 app? I hear a lot of voices saying "I do!" Well, you've come to the right place. Now you can enter to win one of 3 prizes each month $1000, $500 and $250 from Feb-1 to Jun-30, 2013. All you need to do is head over to http://bit.ly...
  • Blog Post: How to determine screen resolution on Windows Phone 8

    This is a very common scenario most developers stumble across - they are building an app for Windows Phone and have to target all 3 screen resolutions available with Windows Phone 8. The 3 screen resolutions for your reference are: WVGA - 480x800 or 800x480 (15:9 ratio) WXGA - 768x1280 or 1280x768 (15...
  • Blog Post: DVLUPer Phone Update

    Here's the update you all have been waiting for! In this blog post, I will mention the criteria to qualify to get a Nokia Lumia Windows Phone from me. * If you write 1 new app for Windows Phone, you can get a brand new Nokia Lumia 800 Windows Phone device. * If you write 3 new apps for Windows Phone...
  • Blog Post: Nokia's Developer Rewards

    I am a Nokia Developer Ambassador, and I have been asked in countless number of emails how to get a device to test apps on, how to get an account for Windows Phone Dev Center, how to get a free phone, and the list goes on... I will try and answer all these questions (and then some) right here. My goal...
  • Blog Post: Error: DEP0700: Registration of the app failed. An internal error occurred.

    So you've started your Windows 8 app development journey. All things are going smooth until one day you hit this error when trying to run/debug your app. The error says "Error: DEP0700: Registration of the app failed. An internal error occurred with error 0x80073D05. See http://go.microsoft.com/fwlink...
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