Csharp/CSharp Tutorial/String/String Concat

Append strings using Concat()

using System; 
 
class MainClass { 
  public static void Main() { 
 
    string result = String.Concat("This ", "is ", "a ", 
                                  "test ","."); 
 
    Console.WriteLine("result: " + result); 
 
  } 
}

result: This is a test .

Concatenate string with integers

using System;  
class MainClass {  
  public static void Main() {  
  
    string result = String.Concat("The value is " + 19); 
    Console.WriteLine("result: " + result);  
 
  }  
}

result: The value is 19

Concatenate string with non-strings

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;

public class MainClass
{
    public static void Main()
    {
        int number = 10;
        string msg = "age is " + number + ".";
        msg += " great?";
        Console.WriteLine("msg: {0}", msg);
        String s1 = 10 + 5 + ": Two plus three is " + 2 + 3;
        String s2 = 10 + 5 + ": Two plus three is " + (2 + 3);
        Console.WriteLine("s1: {0}", s1);
        Console.WriteLine("s2: {0}", s2);    }
}

msg: age is 10. great?
s1: 15: Two plus three is 23
s2: 15: Two plus three is 5

Mix string and integer in string cancatenation

using System;  
class MainClass {  
  public static void Main() {  
    string result = String.Concat("hello ", 88, " ", 20.0, " ", 
                           false, " ",  23.45M);  
    Console.WriteLine("result: " + result);  
  }
}

result: hello 88 20 False 23.45

String concatenation

using System;
using System.Collections.Generic;
using System.Text;

  class Program
  {
    static void Main(string[] args)
    {
      string s1 = "A ";
      string s2 = "B";
      string s3 = string.Concat(s1, s2);
      Console.WriteLine(s3);
    }
  }