C# 0 The Complete Reference

Attribute

. Inside 

RemarkAttribute

there is one private field, 

pri_remark

, which supports one public, read-only property: 

Remark

.

This property holds the description that will be associated with the attribute. (

Remark

 could 

also have been declared as an auto-implemented property with a private set accessor, but a 

read-only property is used for the purposes of illustration.) There is one public constructor 

that takes a string argument and assigns it to 

Remark

.

At this point, no other steps are needed, and 

RemarkAttribute

 is ready for use.

Attaching an Attribute

Once you have defined an attribute class, you can attach the attribute to an item. An attribute 

precedes the item to which it is attached and is specified by enclosing its constructor inside 

square brackets. For example, here is how 

RemarkAttribute

 can be associated with a class:

[RemarkAttribute("This class uses an attribute.")]

class UseAttrib {

  // ...

}

This constructs a 

RemarkAttribute

 that contains the comment, “This class uses an 

attribute.” This attribute is then associated with 

UseAttrib

.

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