C# String Split()

using System;  
namespace CsharpString {  
  class Test {
    public static void Main(string [] args) {

      string text = "C# is a fun programming language";

      // split string 
      string[] result = text.Split(" ");

      Console.Write("Result: ");
      foreach(String str in result) {
        Console.Write(str + ", ");
      }
      Console.ReadLine();
    }
  } 
}

// Output: Result: C#, is, a, fun, programming, language,

Split() Syntax

The syntax of the string Split() method is:

Split(String separator, Int32 count, StringSplitOptions options)

Here, Split() is a method of class String.

Split() Parameters

The Split() method takes the following parameters:

• separator - separates the substrings in a string
• count - controls the number of resulting substrings
• options - specifies whether to omit empty array elements or to include them

Split() Return Value

The Split() method returns a string array containing the substrings.

Example 1: Split String Into an Array

using System;  
namespace CsharpString {  
  class Test {
    public static void Main(string [] args) {

      string text = "a::b::c::d::e";

      // split string at ::
      string[] result = text.Split("::");

      foreach(string str in result) {
        Console.WriteLine(str);
      }
      Console.ReadLine();
    }
  } 
}

Output

a
b
c
d
e

Here, we split the string at ::. Since the count parameter is not passed, the returned array contains all the substrings.

Example 2: Split String Using Multiple Characters

using System;  
namespace CsharpString {  
  class Test {
    public static void Main(string [] args) {

      string text = "a b,c.d/e";

      // split string 
      string[] result = text.Split(' ', ',', '.','/');

      foreach(string str in result) {
        Console.WriteLine(str);
      }
      Console.ReadLine();
    }
  } 
}

Output

a
b
c
d
e

Here, we split the string at characters ' ', ',', '.' , and '/'.

Example 3: Split String Delimited by a String or String Array

using System;  
namespace CsharpString {  
  class Test {
    public static void Main(string [] args) {

      string text = "Programiz is developed for programmers";
      string[] separators = {"is", "for"};

      // separates string at separators
      string[] result = text.Split(separators, StringSplitOptions.None);

      foreach(string str in result) {
        Console.WriteLine(str);
      }
      Console.ReadLine();
    }
  } 
}

Output

Programiz
 developed
 programmers

In the above example, notice the line,

string[] result = text.Split(separators, StringSplitOptions.None);

Here,

• separators - string array used to split the string text at "is" and "for"
• StringSplitOptions.None - includes empty array elements in the returned array

Example 4: Return a Specific Number of Substrings

using System;  
namespace CsharpString {  
  class Test {
    public static void Main(string [] args) {

      string text = "a::b::c::d::e::f";

      string[] separators = {"::"};
  
      // create a maximum of 2 substrings 
      string[] result = text.Split(separators, 2, StringSplitOptions.None);

      foreach(string str in result) {
        Console.WriteLine(str);
      }
      Console.ReadLine();
    }
  } 
}

Output

a
b::c::d::e::f

In the above example, notice the line,

string[] result = text.Split(separators, 2, StringSplitOptions.None);

Here, we have specified the count to 2, so it returns a maximum number of 2 substrings.