IComparable Interface
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IComparable Interface

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Defines a generalized type-specific comparison method that a value type or class implements to order or sort its instances.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

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The IComparable type exposes the following members.

  NameDescription
Public methodCompareToCompares the current instance with another object of the same type and returns an integer that indicates whether the current instance precedes, follows, or occurs in the same position in the sort order as the other object.
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This interface is implemented by types whose values can be ordered or sorted. It requires that implementing types define a single method, CompareTo, that indicates whether the position of the current instance in the sort order is before, after, or the same as a second object of the same type. The instance's IComparable implementation is called automatically by methods such as Array::Sort.

All numeric types (such as Int32 and Double) implement IComparable, as do String, Char, and DateTime. Custom types should also provide their own implementation of IComparable to allow object instances to be ordered or sorted.

The following code sample illustrates the implementation of IComparable and the requisite CompareTo method.

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No code example is currently available or this language may not be supported.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

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