Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

String.Concat Method (Object())

Concatenates the string representations of the elements in a specified Object array.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Public Shared Function Concat ( _
	ParamArray args As Object() _
) As String

Parameters

args
Type: System.Object()

An object array that contains the elements to concatenate.

Return Value

Type: System.String
The concatenated string representations of the values of the elements in args.

ExceptionCondition
ArgumentNullException

args is Nothing.

OutOfMemoryException

Out of memory.

The method concatenates each object in args by calling the parameterless ToString method of that object; it does not add any delimiters.

String.Empty is used in place of any null object in the array.

Notes to Callers

This method is not called by C++ code. The C++ compiler resolves calls to Concat that have four or more object parameters as a call to Concat(Object, Object, Object, Object),

The following example demonstrates the use of the Concat method with an Object array.

Imports System



Public Class ConcatTest

    Public Shared Sub Main()
        Dim t1 As New Test1()
        Dim t2 As New Test2()
        Dim i As Integer = 16
        Dim s As String = "Demonstration" 
        Dim o As Object() = {t1, i, t2, s}

        ' create a group of objects 

        ' place the objects in an array 

        ' concatenate the objects together as a string. To do this, 
        ' the ToString method in the objects is called
        Console.WriteLine(String.Concat(o))
    End Sub 'Main
End Class 'ConcatTest


' imagine these test classes are full-fledged objects... 
Class Test1
End Class 'Test1

Class Test2
End Class 'Test2

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Show:
© 2014 Microsoft