There is a good book -
"Pro C # 2010 and the. NET 4 Platform"
http://www.amazon.com/2010-NET-Platform-Andrew-Troelsen/dp/1430225491
This book is as weighty within as its heft suggests. It covers nearly every dimension of C#, ranging from the basics of its syntax to the more difficult (for me) concepts of inheritance, delegates, and multithreading. It is comprehensive enough to be a valuable overview for the new initiate to C#, but is not a "21 days" text; programmers with some C# already, or another equivalent language, I suspect would most benefit. For me, it was particularly helpful in preparing for technical interviews.
I particularly enjoyed Troelsen's ability to present highly abstruse and intricate (and, often, dry) concepts with both humor and an absence of fluff
Then I found a link, but only for .NET 3:
http://books.google.co.il/books?id=JZmbD7yeNMMC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
This book is also very good -
"C# 4.0 The Complete Reference" of Herbert Schildt
The Definitive Guide to C# "From using LINQ to covariance and from string formatting to optional arguments, Herb's update covers all you need to know about using real-world C# 4.0." Michael Howard, Microsoft Corporation Bestselling author Herb Schildt has updated and expanded his classic programming reference to cover C# 4.0--the latest release of this powerful, feature-rich language. Using carefully crafted explanations, insider tips, and hundreds of examples, C# 4.0: The Complete Referenceoffers in-depth details on all aspects of C#, including keywords, syntax, and core libraries. New C# 4.0 features, such as named and optional arguments, the dynamic type, expanded covariance and contravariance capabilities, and support for parallel programming with the Task Parallel Library (TPL) and PLINQ are also discussed. Perfect for beginners and professional C# programmers alike, this expert resource is written in the clear, crisp, uncompromising style that has made Herb the choice of millions worldwide. Begin mastering C# 4.0 today with help from this authoritative volume! Coverage includes: Data types and operators Control statements Classes and objects Constructors, destructors, and methods Interfaces, arrays, enumerations, and structures Method and operator overloading Inheritance and virtual methods Reflection and runtime type ID Exception handling Delegates, properties, events, and indexers Attributes Multithreading and the Task Parallel Library Generics LINQ and PLINQ Lambda expressions Anonymous types Extension methods Named and optional arguments Implicitly typed variables I/O, networking, and collections The preprocessor and much, much more
http://books.google.co.il/books?id=Gs-wTrP_vpMC&pg=PA7&dq=Herbert+Schildt+C%23&hl=en&ei=XL-4T-qMFq2Y0QWmwcidCA&sa=X&oi=book_result&ct=book-thumbnail&redir_esc=y#v=onepage&q=Herbert%20Schildt%20C%23&f=false
Good luck.
Regards,
Alex.