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Enumerable.Repeat(Of TResult) Method

Generates a sequence that contains one repeated value.

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

'Declaration
Public Shared Function Repeat(Of TResult) ( _
	element As TResult, _
	count As Integer _
) As IEnumerable(Of TResult)
'Usage
Dim element As TResult
Dim count As Integer 
Dim returnValue As IEnumerable(Of TResult)

returnValue = Enumerable.Repeat(element, _
	count)

Type Parameters

TResult

The type of the value to be repeated in the result sequence.

Parameters

element
Type: TResult

The value to be repeated.

count
Type: System.Int32

The number of times to repeat the value in the generated sequence.

Return Value

Type: System.Collections.Generic.IEnumerable(Of TResult)
An IEnumerable(Of T) that contains a repeated value.

ExceptionCondition
ArgumentOutOfRangeException

count is less than 0.

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 Repeat(Of TResult) to generate a sequence of a repeated value.

' Repeat the same string to create a sequence. 
Dim sentences As IEnumerable(Of String) = _
    Enumerable.Repeat("I like programming.", 15)

Dim output As New System.Text.StringBuilder
For Each sentence As String In sentences
    output.AppendLine(sentence)
Next 

' Display the output.
MsgBox(output.ToString())

' This code produces the following output: 

' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming. 
' I like programming.

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

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