Generates a sequence of integral numbers within a specified range.
(in System.Core.dll)
Visual Basic (Declaration)
Public Shared Function Range ( _
start As Integer, _
count As Integer _
) As IEnumerable(Of Integer)
Dim start As Integer
Dim count As Integer
Dim returnValue As IEnumerable(Of Integer)
returnValue = Enumerable.Range(start, count)
public static IEnumerable<int> Range(
int start,
int count
)
public:
static IEnumerable<int>^ Range(
int start,
int count
)
public static function Range(
start : int,
count : int
) : IEnumerable<int>
This method is implemented by using deferred execution. The immediate return value is an object that stores all the information that is required to perform the action. The query represented by this method is not executed until the object is enumerated either by calling its GetEnumerator method directly or by using foreach in Visual C# or For Each in Visual Basic.
The following code example demonstrates how to use Range to generate a sequence of values.
' Generate a sequence of integers from 1 to 10
' and project their squares.
Dim squares As IEnumerable(Of Integer) = _
Enumerable.Range(1, 10).Select(Function(x) x * x)
Dim output As New System.Text.StringBuilder
For Each num As Integer In squares
output.AppendLine(num)
Next
' Display the output.
MsgBox(output.ToString())
' This code produces the following output:
'
' 1
' 4
' 9
' 16
' 25
' 36
' 49
' 64
' 81
' 100
// Generate a sequence of integers from 1 to 10
// and then select their squares.
IEnumerable<int> squares = Enumerable.Range(1, 10).Select(x => x * x);
foreach (int num in squares)
{
Console.WriteLine(num);
}
/*
This code produces the following output:
1
4
9
16
25
36
49
64
81
100
*/
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5
.NET Compact Framework
Supported in: 3.5
XNA Framework
Supported in: 3.0
Reference