Tuple(T1, T2).IStructuralComparable.CompareTo Method
Compares the current Tuple(T1, T2) object to a specified object by using a specified comparer, and returns an integer that indicates whether the current object is before, after, or in the same position as the specified object in the sort order.
Assembly: mscorlib (in mscorlib.dll)
private abstract CompareTo : other:Object * comparer:IComparer -> int private override CompareTo : other:Object * comparer:IComparer -> int
- Type: System.Object
An object to compare with the current instance.
- Type: System.Collections.IComparer
An object that provides custom rules for comparison.
Return ValueType: System.Int32
A signed integer that indicates the relative position of this instance and other in the sort order, as shown in the following table.
A negative integer
This instance precedes other.
This instance and other have the same position in the sort order.
A positive integer
This instance follows other.
Although this method can be called directly, it is most commonly called by collection sorting methods that include IComparer parameters to order the members of a collection., For example, it is called by the Array.Sort(Array, IComparer) method and the Add method of a SortedList object that is instantiated by using the SortedList.SortedList(IComparer) constructor.
The method is intended for use in sorting operations. It should not be used when the primary purpose of a comparison is to determine whether two objects are equal. To determine whether two objects are equal, call the IStructuralEquatable.Equals method.
The following example creates an array of Tuple(T1, T2) objects that consist of a student's name and test score. It displays the component of each tuple in the array in unsorted order, sorts the array, and then calls ToString to display the value of each tuple in sorted order. To sort the array, the example defines a generic ScoreComparer class that implements the IComparer interface and sorts the Tuple(T1, T2) objects in ascending order by the value of their second component rather than their first component. Note that the example does not directly call the method. This method is called implicitly by the Array.Sort(Array, IComparer) method for each element in the array.
.NET FrameworkSupported in: 4.5, 4
.NET Framework Client ProfileSupported in: 4
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
.NET for Windows Phone appsSupported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.