Sudhindra Kovalam's Blog

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Posts Tagged ‘Microsoft

My Experiences in Windows Phone 7 Development :Part 2

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In Recently concluded Community tech days in pune, we had a sizable audience for Windows Phone 7 development session by Mayur Tendulkar. I was there in the crowd and must say, It was a good session on WP7 🙂

While the in the crowd  I did realize that Not  many have started WP7 development, But still, If you have done some development using April CTP and are probably itching to download the July Beta of the tool, Behold  There are some breaking changes.

Changes in the July Beta :

1. You Cannot now use the Bing maps control for silverlight in WP7 projects :

This my friends was very misleading  in the April CTP, You must have noticed that using the Bing Maps for SL , you could actually create apps on the phone that utilize, however  the performance would have been really bad, even on the emulator (it used to take around 4-6 min to load the map ).

The SL controls used to work on the April CTP due to a glitch in the, then released SDK.

2. The issue of needing to use unsigned versions of the dll that were signed using third party certificates has now been resolved

In the April CTP, you  could not use a signed DLL from a third party , as the emulator would not allow you to use these DLLs, You would have needed to unsign these DLLs to use ‘em in your WP7 project.  the Good news is that this has now been fixed in the July Beta. Now You can use the singed DLLs that you always wanted to use

3. Some of the assemblies have been merged into a single assembly:

One thing that you will probably notice is that once you open your April CTP project after you install the beta tools, the project compilation will result into a lot of errors. Most of these have got to do with the assembly mergers and deprecation of certain controls. A more detailed blog has been written by Jamie Rodriguez from Microsoft , where this is explained in much more detail (Link to Jamie’s Blog)

Upgrading to the July Beta:

I have  heard a lot of complaining about the setup experience on upgrading from April CTP to july Beta. What I’d Suggest ( the way which worked smoothly for around 5-6 PCs in my office) is to uninstall the CTP by hitting the uninstall option for Windows Phone Developer tools CTP in the add/remove programs. This will uninstalll all the components and ask for a reboot. After the reboot is done, we can now start the installation of the July beta SDK and tools.

Issue that I have observed :

One thing, you might notice is that whenever you do a DateTime.Now in your code and you are running this code in the emulator, the emulator will always return the install date and not the system date. If this is an issue that you are facing there is a workaround for this. Go to %ProgramData%\Microsoft\XDE and delete all files with .dess extension there (These are the state files, once these are deleted you will see the current date on the emulator, However time zone is set to Alaska GMT -9). So Once you start noticing the offset, delete the .dess file and you are back on time 🙂


Much more to come in the following blog posts… Keep reading and thanks for your support


Written by sudheerkovalam

July 18, 2010 at 5:53 pm

Techstart Grand Finale on December 21,2009

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About the Techstart Program
The Techstart program was conceived to address the unique situation that the Computer Science class of 2009 found itself in. Conceived by Dr. Anand Deshpande,(Founder, Chairman and Managing Director, Persistent Systems Ltd.) inspired by a similar highly successful experiment at Stanford, sponsored by Microsoft and supported by multiple organizations and individuals, Techstart was designed to provide these students with training on Windows Azure development, Microsoft’s cloud computing platform, through a community effort.
About 200 students brushed up on the basics of .NET development followed by over 8 weeks of intense training on the Windows Azure development platform from industry experts. The training culminated in a competition that showcased this newly acquired knowledge in the form of group projects hosted on Windows Azure.
Teams from these groups also participated in the national level Cloupdapp competition hosted by Microsoft India, One of the teams has won the first prize in the student category.

Please join us in applauding the students and volunteers that made this event a huge success and
for a technology-filled evening. To Know more visit :

My experiences during the Program

Running this program was amazingly cool, It was fun, a great learning experience for the trainers as well as the participants.

We would take turns on who would teach what? (Teach as in , give the participants a brief overview of the concept, how it can be done, and a small sample demo (Usually the demos from the Windows azure training kit would suffice 🙂 )

We had provided them all reference stuff, Right from Windows 7 RC DVDs to Visual studio express editions, to the SDK and training kit. These were some very large downloads so, Courtesy PSL and MSFT, we arranged for some DVD sets which had all these installers.

In July 2009, There was a “swine flu” scare in the city, so we had to stop the program for some time but once we started again, every participant turned up enthusiastically to learn the technology.

I must applaud all the students/ participants of this program who have really shown keen interest in the technology, Their Curiosity/Interest in learning azure was so motivating that some one like me, who still has stage fright, managed to take a couple of sessions. in front of 150 people audience.(Thank you for helping me get rid of some of the stage fright i have. 🙂 )

Also the questions ,all of them asked used give us an opportunity to look deeper and even learn stuff which we might have missed out … (Thank you again 🙂 )

This program helped me meet some amazing people , who volunteered to take some training sessions in this program. I would like to thank them too. Some of them are:

  1. Matin sayed
  2. Mahesh Mitkari
  3. Mayur Tendulkar
  4. Brihadish Koushik
  5. Prasad Chitale
  6. Saranya Sriram and off course,
  7. Monish Darda (Who BTW is the event jockey on the 21st night 🙂 )

(I apologize if i have missed out some of the names)

An amazing Co ordination by Mr. Shekhar Sahasabudhe and Mr. Kaustubh Bhadbade, took care of the arrangements needed ,such as the venue etc. I would like to take this opportunity to thank every one in the admin team @ Bhagirath (who helped us with all stuff , like setting up the projector, mic. etc. and other such logistics)

And last but not the least (How Can i forget them!!), the duo from Microsoft

  1. Vikram Rajkondawar
  2. Mark D’Souza

who helped us a lot and also were a driving force in the program, right from providing us azure tokens on short notice to helping us iron out any difficulties we had… BTW when Mark and Vikram were here in Pune , for TechStart, they too delivered some amazing sessions and showed us some amazing Microsoft demos .(Many more awesome demos in the pipeline for the event. Be there to check ‘em  out, They will enthrall you 🙂 )

Thank you one and all for making this event a grand success….

And now time for some shameless publicity stunt:

The website is designed /developed by me (With the help of Ritesh, a friend of mine who developed a POC for me  ) 😀

Written by sudheerkovalam

December 17, 2009 at 1:17 am