Tuple<T1, T2, T3> Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Represents a 3-tuple, or triple.
Assembly: mscorlib (in mscorlib.dll)
Thetype exposes the following members.
|Equals||Returns a value that indicates whether the current object is equal to a specified object. (Overrides Object.Equals(Object).)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Returns the hash code for the current object. (Overrides Object.GetHashCode().)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the value of this instance. (Overrides Object.ToString().)|
|IComparable.CompareTo||Compares the current object to a specified object 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.|
|IStructuralComparable.CompareTo||Compares the current 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.|
|IStructuralEquatable.Equals||Returns a value that indicates whether the current object is equal to a specified object based on a specified comparison method.|
|IStructuralEquatable.GetHashCode||Calculates the hash code for the current object by using a specified computation method.|
A tuple is a data structure that has a specific number and sequence of values. The class represents a 3-tuple, or triple, which is a tuple that has three components.
You can instantiate a object by calling either the Tuple<T1, T2, T3> constructor or the static Tuple.Create<T1, T2, T3>(T1, T2, T3) method. You can retrieve the values of the tuple's components by using the read-only Item1, Item2, and Item3 instance properties.
Tuples are commonly used in four different ways:
To represent a single set of data. For example, a tuple can represent a database record, and its components can represent individual fields of the record.
To provide easy access to, and manipulation of, a data set. The following example defines an array of objects that contain the names of students, their average test scores, and the number of tests taken. The array is passed to the ComputeStatistics method, which calculates the mean and standard deviation of the test scores.
To return multiple values from a method without the use of out parameters (in C#) or ByRef parameters (in Visual Basic). For example, the previous example returns its summary test score statistics in a object.
To pass multiple values to a method through a single parameter. For example, the Thread.Start(Object) method has a single parameter that lets you supply one value to the method that the thread executes at startup. If you supply a object as the method argument, you can supply the thread’s startup routine with three items of data.