New PDF release: Data Entry and Validation with C# and VB .NET Windows Forms

By Nick Symmonds, Nicholas Symmonds

ISBN-10: 1590591089

ISBN-13: 9781590591086

"Data access and Validation with C# and VB .NET home windows kinds" is an entire textual content on tips on how to write potent facts access and validation code. so much books deal merely with the person items of .NET, comparable to the controls or how the .NET Framework works. This ebook brings jointly all this information and indicates readers easy methods to construct genuine programs.The outdated hacker adage "Garbage in, rubbish out" hasn't ever been so very important because it is this day. With ever-increasing quantities of data flowing into and out of contemporary purposes, the duty of an program developer to manage and ensure details is seriously vital to any software program venture. For the 1st time, "Data access and Validation with C# and VB .NET home windows kinds" brings jointly present wisdom in this topic in an comprehensible, easy-to-read shape. masking improvement and top practices for facts access and validation, together with GDI+, customized controls, localization, accessibility, right info validation recommendations, and most sensible practices with visible easy and C#, "Data access and Validation with C# and VB .NET home windows types" is a publication no smooth programmer may be with no.

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Additional info for Data Entry and Validation with C# and VB .NET Windows Forms

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Use this technique only when it's clear that a better match is quite a bit better, and measure the performance to see whether there are better ways to write your library to avoid the problem altogether. Of course, this is not to say that you should never create more-specific methods for a given implementation. Item 3 shows how to create a better implementation when advanced capabilities are available. The code in Item 3 creates a reverse iterator that adapts itself correctly when advanced capabilities are created.

Ref parameters make it harder to create immutable objects. Parse could throw an exception if the input string for salary does not parse correctly. WriteLine(emp); } For the most trivial of examples, we've added quite a bit of code. This problem gets worse as programs get larger. Also, ref and out parameters make polymorphism much more difficult. FirstName, newLastName); } ChangeName() cannot be called with an employee object. That's a good thing, because it wouldn't work. This method would transform an Employee (or any other derived object) into a Person.

The first application that uses the XmlPersistenceManager with more than one class will have problems. Each XmlSerializer is tied to a specific Type class. It knows how to serialize only that type. Using it with another Type instance causes an exception. You could modify the class by storing a hashtable of XmlSerializer objects mapped to the Type instance they use. But that means writing more code, work that the compiler and JIT engine can do for you. ) It shouldn't take you long to see that you've essentially copied an algorithm and have made a couple of substitutions.

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Data Entry and Validation with C# and VB .NET Windows Forms by Nick Symmonds, Nicholas Symmonds

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