By Jason Bock, Tom Barnaby

ISBN-10: 1590591364

ISBN-13: 9781590591369

This e-book makes a speciality of part of .NET known as 'attributes'. Attributed programming is a characteristic of .NET that continues to be quite unexplored and unknown, but is very very important and should develop into extra vital through the years. Attributes are used to switch the runtime habit of code within the .NET framework. The booklet covers the basics of attributes, universal .NET attributes, use of customized attributes, and complex recommendations.

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Extra info for Applied .NET Attributes

Example text

As a general rule, however, you should consider the contextual keywords reserved and avoid using them for any other purpose. Using a contextual keyword as a name for some other program element can be confusing and is considered bad practice by many programmers. The contextual keywords are shown in Table 1-2. Identifiers In C#, an identifier is a name assigned to a method, a variable, or any other user-defined item. Identifiers can be from one to several characters long. Variable names may start with any letter of the alphabet or with an underscore.

A code block is a grouping of statements. A code block is created by enclosing the statements between opening and closing curly braces. Once a block of code has been created, it becomes a logical unit that can be used any place that a single statement can. For example, a block can be a target for if and for statements. Consider this if statement: if(counter < max) { usercount = counter; delaytime = 0; } Here, if counter is less than max, both statements inside the block will be executed. Thus, the two statements inside the block form a logical unit, and one statement cannot execute without the other also executing.

Just separate their names by commas. For example, length and width could have been declared like this: int length, width; // both length and width declared using one statement The double Data Type In the preceding program, a variable of type int was used. However, a variable of type int can hold only whole numbers. Thus, it cannot be used when a fractional component is required. 3. Fortunately, int is only one of several data types defined by C#. To allow numbers with fractional components, C# defines two floating-point types: float and double, which represent single- and double-precision values, respectively.

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Applied .NET Attributes by Jason Bock, Tom Barnaby

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