String.Concat Method (String, String, String)

Concatenates three specified instances of String.

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

public static string Concat(
	string str0,
	string str1,
	string str2
)

Parameters

str0
Type: System.String
The first string to concatenate.
str1
Type: System.String
The second string to concatenate.
str2
Type: System.String
The third string to concatenate.

Return Value

Type: System.String
The concatenation of str0, str1, and str2.

The method concatenates str0, str1, and str2; it does not add any delimiters.

An Empty string is used in place of any null argument.

In the following example, the output to the console is generated using this Concat method.


 using System;
 using System.Globalization; 

public class MainClass { 
    public static void Main(string[] args)  {
        DateTime dt = DateTime.Now;
        String[] format = {
            "d", "D",
            "f", "F",
            "g", "G",
            "m",
            "r",
            "s",
            "t", "T",
            "u", "U",
            "y",
            "dddd, MMMM dd yyyy",
            "ddd, MMM d \"'\"yy",
            "dddd, MMMM dd",
            "M/yy",
            "dd-MM-yy",
        };
        String date;
        for (int i = 0; i < format.Length; i++) {
            date = dt.ToString(format[i], DateTimeFormatInfo.InvariantInfo);
            Console.WriteLine(String.Concat(format[i], " :" , date));
        }

   /** Output.
    *
    * d :08/17/2000
    * D :Thursday, August 17, 2000
    * f :Thursday, August 17, 2000 16:32
    * F :Thursday, August 17, 2000 16:32:32
    * g :08/17/2000 16:32
    * G :08/17/2000 16:32:32
    * m :August 17
    * r :Thu, 17 Aug 2000 23:32:32 GMT
    * s :2000-08-17T16:32:32
    * t :16:32
    * T :16:32:32
    * u :2000-08-17 23:32:32Z
    * U :Thursday, August 17, 2000 23:32:32
    * y :August, 2000
    * dddd, MMMM dd yyyy :Thursday, August 17 2000
    * ddd, MMM d "'"yy :Thu, Aug 17 '00
    * dddd, MMMM dd :Thursday, August 17
    * M/yy :8/00
    * dd-MM-yy :17-08-00
    */
    }
}


.NET Framework

Supported in: 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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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