/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Use a property as a named attribute parameter.
using System;
using System.Reflection;
[AttributeUsage(AttributeTargets.All)]
class RemarkAttribute : Attribute {
string remarkValue; // underlies remark property
int pri_priority; // underlies priority property
public string supplement; // this is a named parameter
public RemarkAttribute(string comment) {
remarkValue = comment;
supplement = "None";
}
public string remark {
get {
return remarkValue;
}
}
// Use a property as a named parameter.
public int priority {
get {
return pri_priority;
}
set {
pri_priority = value;
}
}
}
[RemarkAttribute("This class uses an attribute.",
supplement = "This is additional info.",
priority = 10)]
class UseAttrib {
// ...
}
public class NamedParamDemo11 {
public static void Main() {
Type t = typeof(UseAttrib);
Console.Write("Attributes in " + t.Name + ": ");
object[] attribs = t.GetCustomAttributes(false);
foreach(object o in attribs) {
Console.WriteLine(o);
}
// Retrieve the RemarkAttribute.
Type tRemAtt = typeof(RemarkAttribute);
RemarkAttribute ra = (RemarkAttribute)
Attribute.GetCustomAttribute(t, tRemAtt);
Console.Write("Remark: ");
Console.WriteLine(ra.remark);
Console.Write("Supplement: ");
Console.WriteLine(ra.supplement);
Console.WriteLine("Priority: " + ra.priority);
}
}
|
