ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest>.IStructuralComparable.CompareTo(Object, IComparer) ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest>.IStructuralComparable.CompareTo(Object, IComparer) ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest>.IStructuralComparable.CompareTo(Object, IComparer) Method


Compares the current ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest> instance 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.

 virtual int System.Collections.IStructuralComparable.CompareTo(System::Object ^ other, System::Collections::IComparer ^ comparer) = System::Collections::IStructuralComparable::CompareTo;
int IStructuralComparable.CompareTo (object other, System.Collections.IComparer comparer);
Function CompareTo (other As Object, comparer As IComparer) As Integer Implements IStructuralComparable.CompareTo


Object Object Object

The object to compare with the current instance.

IComparer IComparer IComparer

An object that provides custom rules for comparison.


A signed integer that indicates the relative position of this instance and other in the sort order, as shown in the following table.

Value Description
A negative integer This instance precedes other.
Zero This instance and other have the same position in the sort order.
A positive integer This instance follows other.




This member is an explicit interface implementation. It can only be used when the ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest> instance is cast to an IStructuralComparable interface.

This method lets you define customized comparisons of ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest> objects. For example, you can use this method to order ValueTuple<T1,T2,T3,T4,T5,T6,T7,TRest> objects based on the value of a specific component.

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 IStructuralComparable.CompareTo 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.

Applies to