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String.Concat Method (String, String, String)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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.

The following example illustrates the Concat(Object) method.


using System;
using System.Globalization;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      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);
         outputBlock.Text += String.Format(String.Concat(format[i], " :", date)) + "\n";
      }

      /** 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
       */
   }
}


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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