Enumerable.Max Method (IEnumerable<Int64>)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Returns the maximum value in a sequence of Int64 values.

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


<ExtensionAttribute> _
Public Shared Function Max ( _
    source As IEnumerable(Of Long) _
) As Long
public static long Max(
    this IEnumerable<long> source


Return Value

Type: System.Int64
The maximum value in the sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<Int64>. When you use instance method syntax to call this method, omit the first parameter.


Exception Condition

source is nulla null reference (Nothing in Visual Basic).


source contains no elements.


The Max(IEnumerable<Int64>) method uses the Int64 implementation of IComparable<T> to compare values.

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


The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

      ' Create a list of Long values.
      Dim longs As New List(Of Long)(New Long() _
                                     {4294967296L, 466855135L, 81125L})

      ' Get the maximum value in the list.
      Dim max As Long = longs.Max()

      ' Display the result.
      outputBlock.Text &= "The largest number is " & max & vbCrLf

      ' This code produces the following output:
      ' The largest number is 4294967296

      List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

      long max = longs.Max();

      outputBlock.Text += String.Format("The largest number is {0}.", max) + "\n";

       This code produces the following output:

       The largest number is 4294967296.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.