what are attributes in .NET ?

Feb, 2011 9
An attribute is a declarative tag that is used to convey information to runtime about the behaviour of programmatic elements such as classes,enumerators and assemblies.
A declarative tag is represented by square brackets [] above the definition of the elements that is it can be above the class or it can be above the method .

For example:
[attribute(positional parameters,named parameters)]
Here, in the above example positional parameters are essential information of an attribute whereas name parameters are the optional information of an attribute.
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Feb, 2011 1
Attributes provide a powerful method of associating metadata, or declarative information, with code (assemblies, types, methods, properties, and so forth). After an attribute is associated with a program entity, the attribute can be queried at run time by using a technique called reflection.
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