Csharp/CSharp Tutorial/String/String Split Join

Joining strings

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Security.Cryptography;
public class MainClass
{
    public static void Main()
    {
        string[] s = new string[] { "J", "M", "P", "C" };
        string joined = String.Join("|", s);
        Console.WriteLine(joined);
    }
}

J|M|P|C

Split strings by three tokens

using System; 
 
class MainClass { 
  public static void Main() { 
    string str = "while if for, public class do."; 
    char[] seps = {" ", ".", "," }; 
 
    // Split the string into parts. 
    string[] parts = str.Split(seps); 
    Console.WriteLine("Pieces from split: "); 
    for(int i=0; i < parts.Length; i++) 
      Console.WriteLine(parts[i]); 
    
  } 
}

Pieces from split:
while
if
for
public
class
do

Split string with \\

using System;
  class Class1
  {
    [STAThread]
    static void Main(string[] args)
    {
            char delim = "\\";
            string filePath = "C:\\Windows\\Temp";
            string [] directories = null;
            directories = filePath.Split( delim );
                
            foreach (string directory in directories) 
            {
                Console.WriteLine("{0}", directory);
            }
    }
    }

Splitting strings by |

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
public class MainClass
{
    public static void Main()
    {
        string s = "J|M|P|C";
        string[] pieces = s.Split("|");
        foreach (string piece in pieces)
        {
            Console.WriteLine(piece);
        }
    }
}

J
M
P
C

String joins

using System; 
 
class MainClass { 
  public static void Main() { 
    string str = "while if for, public class do."; 
    char[] seps = {" ", ".", "," }; 
 
    // Split the string into parts. 
    string[] parts = str.Split(seps); 
    
    string whole = String.Join(" | ", parts); 
    Console.WriteLine("Result of join: "); 
    Console.WriteLine(whole); 
    
  } 
}

Result of join:
while | if | for |  | public | class | do |

String Split

using System;
    public class MainClass
    {
        static void Main()
        {
            string s1 = "One,Two,Three Associates, Inc.";
            const char Space = " ";
            const char Comma = ",";
            char[] delimiters = new char[] {Space, Comma};
            foreach (string subString in s1.Split (delimiters))
            {
                Console.WriteLine(subString);
            }
            
        }
    }

Tokenize strings

using System; 
 
class MainClass { 
  public static void Main() { 
    string[] input = { 
                      "100 + 19", 
                      "100 - 87" 
                     }; 
    char[] seps = {" "}; 
 
    for(int i=0; i < input.Length; i++) { 
      string[] parts = input[i].Split(seps); 
      Console.Write("Command: "); 
      for(int j=0; j < parts.Length; j++) 
        Console.Write(parts[j] + " "); 
    } 
  } 
}

Command: 100 + 19 Command: 100 - 87