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.NET Framework Class Library
StringConcat Method (String)

Concatenates the elements of a specified String array.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)
Syntax
Public Shared Function Concat ( _
	ParamArray values As [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_0_0_0%]() _
) As [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_0_0_1%]
public static [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_1_0_0%] Concat(
	params [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_1_0_1%][] values
)
public:
static [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_2_0_0%]^ Concat(
	... array<[%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_2_0_1%]^>^ values
)
static member Concat : 
        values:[%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_3_0_0%][] -> [%$TOPIC/0wkb0y3w_en-us_VS_110_2_0_3_0_1%]

Parameters

values
Type: SystemString

An array of string instances.

Return Value

Type: SystemString
The concatenated elements of values.
Exceptions
ExceptionCondition
ArgumentNullException

values is .

OutOfMemoryException

Out of memory.

Remarks

The method concatenates each object in values; it does not add any delimiters.

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

Examples

The following example demonstrates the use of the Concat method with a String array.

Imports System

Public Class ConcatTest

    Public Shared Sub Main()
        Dim s As String() = {"hello ", "and ", "welcome ", "to ", "this ", "demo! "}

        ' make an array of strings. Note that we have included spaces 

        ' put all the strings together
        Console.WriteLine(String.Concat(s))

        ' sort the strings, and put them together
        Array.Sort(s)
        Console.WriteLine(String.Concat(s))
    End Sub 'Main
End Class 'ConcatTest
using System;

public class ConcatTest {
    public static void Main() {

        // make an array of strings. Note that we have included spaces 
        string [] s = { "hello ", "and ", "welcome ", "to ", "this ", "demo! " };

        // put all the strings together
        Console.WriteLine(string.Concat(s));

        // sort the strings, and put them together
        Array.Sort(s);
        Console.WriteLine(string.Concat(s));
    }
}
using namespace System;
int main()
{

   // make an array of strings. Note that we have included spaces 
   array<String^>^s = {"hello ","and ","welcome ","to ","this ","demo! "};

   // put all the strings together
   Console::WriteLine( String::Concat( s ) );

   // sort the strings, and put them together
   Array::Sort( s );
   Console::WriteLine( String::Concat( s ) );
}
Version Information

.NET Framework

Supported in: 4.5.2, 4.5.1, 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 8, Silverlight 8.1
Platforms

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.