Read e-book online C# in Depth, 3rd Edition PDF

By Jon Skeet

If you are a .NET developer, you will use C# no matter if you are construction a complicated company software or simply slamming out a brief app. In C# five you are able to do notable issues with generics, lambda expressions, dynamic typing, LINQ, iterator blocks, and different good points. yet first you'll want to examine it intensive. C# extensive, 3rd variation has been completely revised to hide the hot beneficial properties of C# five, together with the subtleties of writing maintainable asynchronous code. you will see the facility of C# in motion, studying find out how to paintings with high-value positive aspects that you will be completely satisfied to have on your toolkit. and you can discover ways to steer clear of hidden pitfalls of C# programming with the aid of crystal transparent factors of "behind the scenes" matters. This e-book assumes you might have digested your first C# booklet and are hungry for extra!

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NET that’s not within the base libraries. NET, or anything else. NET, for instance. NET, such as GTK#, and it implements many of the nonstandardized libraries. NET. It can be seen as a whole development platform built on top of Windows. NET is versioned separately, which can be a source of confusion. Appendix C gives a quick rundown of which version of what came out when and with what features. If that’s all clear, I have one last bit of housekeeping to go through before we really start diving into C#.

5 is that you had to introduce an extra type to help with the sorting. That’s not a disaster, but it’s a lot of code if you only want to sort by name in one place. Next, look at the casts in the Compare method. Casts are a way of telling the compiler that you know more information than it does, and that usually means there’s a chance you’re wrong. If the ArrayList you returned from GetSampleProducts did contain a string, that’s where the code would go bang—where the comparison tries to cast the string to a Product.

The method then waits until it has the product information, and quits if the directory has no entry for the given ID. Otherwise, it fills in the UI elements for the name and price, and then waits to get the stock information, and displays that too. Both the product and stock lookups are asynchronous—they could be database operations or web service calls. It doesn’t matter—when you await the results, you’re not actually blocking the UI thread, even though all the code in the method runs on that thread.

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