.Net

@Riddhi,

Sorry I'm not a mobile developer myself and so haven't used the Xamarin products.

However, there are a lot of tutorials on their site:

http://docs.xamarin.com/guides/ios

http://docs.xamarin.com/guides/android

I think not much...MOBILE/JQuery/HTM5 technologies future is good. 

Hi.... as you said - Thanks to Mono and Xamarin; do any of you have idea of how to work with these softwares ??

I tried making sample applications (ipad and iphone) but I failed.

Please help..

Keep going and hope that Microsoft continue to develop the .NET platform.

Even if they don't, thanks to Mono and Xamarin, there are still some good opportunities for C# developers outside the Microsoft stack.

It probably does have a future because I can't really believe that Microsoft expects the majority of .NET developers to move to unmanaged C++ or Javascript/HTML5 instead.

However, there have been a number of worrying developments lately: 

1. When Windows 8 'store' apps were first announced, Microsoft appeared to be downplaying the role of .NET as one of the 3 development choices.

2. There has been an ominous silence about whether there be a new version of .NET after 4.5. The only thing known for certain to be in the pipeline is the Roslyn project ('compiler as a service') which is currently available as a CTP.

3.  One of .NET's leading figures, Anders Hejlsberg, has been working on TypeScript a superset of Javascript and another one, Eric Lippert, has left the company altogether though he has denied it's because .NET is being deprecated. 

4. Microsoft has ceased development of the leading .NET technology, Silverlight, despite the fact that it is currently more advanced than HTML5 and was used by a large number of developers.

So I'm not as confident about the future of .NET as I once was though, whatever happens, there'll certainly be plenty of maintenance work for many years to come. 

Even if Microsoft did decide to get rid of .NET, I wouldn't be surprised to see C# and VB resurrected as unmanaged COM-based languages. The syntactic changes needed would be relative minor and reference counting could be used rather than garbage collection. So time spent now learning them now should not be entirely wasted.