25.13.txt

《Microsoft Visual C# .NET 2003开发技巧大全》源代码

Listing 25.13 Using an Attribute That Has an Optional Property
// this class supplies a MaxValue of 100 with the attribute
[FieldAttribute(MaxValue = 100)]
class PercentSuccessfulSales
{
// implementation here
}
// this class is also decorated with the attribute, but does not
// specify a value for MaxValue.
// MaxValue in this attribute will retain its default value of zero
[FieldAttribute()]
class NumberOfVisits
{
// implementation here
}