Windows Dev Center

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 (String[])

Concatenates the elements of a specified String array.

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

public static string Concat(
	params string[] values
)

Parameters

values
Type: System.String[]

An array of string instances.

Return Value

Type: System.String
The concatenated elements of values.

ExceptionCondition
ArgumentNullException

values is null.

OutOfMemoryException

Out of memory.

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.

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

using System;

public class Example
{
    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));
    }
}
// The example displays the following output: 
//       hello and welcome to this demo! 
//       and demo! hello this to welcome

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

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

Portable Class Library

Supported in: Portable Class Library
Show:
© 2015 Microsoft