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Enumerable.Min<TSource> Method (IEnumerable<TSource>)

 

Returns the minimum value in a generic sequence.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

public static TSource Min<TSource>(
	this IEnumerable<TSource> source
)

Parameters

source
Type: System.Collections.Generic.IEnumerable<TSource>

A sequence of values to determine the minimum value of.

Return Value

Type: TSource

The minimum value in the sequence.

Type Parameters

TSource

The type of the elements of source.

Exception Condition
ArgumentNullException

source is null.

If type TSource implements IComparable<T>, this method uses that implementation to compare values. Otherwise, if type TSource implements IComparable, that implementation is used to compare values.

If TSource is a reference type and the source sequence is empty or contains only values that are null, this function returns null.

In Visual Basic query expression syntax, an Aggregate Into Min() clause translates to an invocation of Min.

The following code example demonstrates how to use Min<TSource>(IEnumerable<TSource>) to determine the minimum value in a sequence of IComparable<T> objects.

/// <summary>
/// This class implements IComparable in order to 
/// be able to compare different Pet objects.
/// </summary>
class Pet : IComparable<Pet>
{
    public string Name { get; set; }
    public int Age { get; set; }

    /// <summary>
    /// Compares this Pet's age to another Pet's age.
    /// </summary>
    /// <param name="other">The Pet to compare this Pet to.</param>
    /// <returns>-1 if this Pet's age is smaller, 
    /// 0 if the Pets' ages are equal, or 
    /// 1 if this Pet's age is greater.</returns>
    int IComparable<Pet>.CompareTo(Pet other)
    {
        if (other.Age > this.Age)
            return -1;
        else if (other.Age == this.Age)
            return 0;
        else
            return 1;
    }
}

public static void MinEx3()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    Pet min = pets.Min();

    Console.WriteLine(
        "The 'minimum' animal is {0}.",
        min.Name);
}

/*
 This code produces the following output:

 The 'minimum' animal is Whiskers.
*/

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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