C# String Split() Method

In C#, Split() is a string class method used to divide a string into an array of substrings. The Split() method divides a string into an array of substrings using specified delimiters.

The delimiters can be:

• A character for example comma(,) or underscore(-).
• An array of characters char[] or an array of strings string[].

In simple words, it returns a string array that contains the substrings in the current instance that are delimited by elements of a specified string or Unicode character array.

Example: Separating a string based on space using String.Split() method.

// C# program to illustrate the // String.Split() Method  using System; class Geeks {  public static void Main() { // declaring the string String str = "Hello from GeeksforGeeks"; // Splitting the string // into substrings separated by spaces string[] split = str.Split(' '); foreach (var word in split) {  Console.WriteLine(word); } } } 

Hello from GeeksforGeeks 

Explanation: In the above example, we use the Split() method which converts the string into the string array based on a single space and then we print each string present in the array using the foreach loop.

Different Overloads of String.Split() Method

These are the six overloads of String.Split() method.

Parameters:

• separator: It is a character or a set of characters or an array of string[] that defines the points at which a string should be split into substrings
• options: RemoveEmptyEntries or None option to omit empty array elements from the array returned or None option to include empty array elements in the array returned.
• count: It defines the maximum number of substrings to return. If omitted, all possible substrings are returned.

Return Type: This method returns an array whose elements contain the substrings in this string which are delimited by one or more characters or an array of strings in the separator .

Exceptions:

• ArgumentOutOfRangeException: If the count is negative.
• ArgumentException: If the options are not one of the StringSplitsOptions values.
  

1. Split(String[], Int32, StringSplitOptions)

This method is used to split a string into a maximum number of substrings based on the strings in an array. We can specify whether the substrings include empty array elements or not.

Syntax:

public String[] Split(String[] separator, int count, StringSplitOptions options);

Example: Separate the string using the Split(String[], Int32, StringSplitOptions) method.

// C# program to illustrate Split(String[], Int32, StringSplitOptions) using System;  class Geeks  {   static void Main(string[] args)   {  // Declaring the string   string s = "Geeks, For Geeks";   // String array of separators  string[] sp = { ",", "For" };   // Count of substrings to be returned  int c = 2;   // Splitting the string  string[] strlist = s.Split(sp, c, StringSplitOptions.RemoveEmptyEntries);   // Displaying the substrings  foreach(string str in strlist)   {   Console.WriteLine(str);   }   }  } 

Geeks For Geeks 

2. Split(Char[], Int32, StringSplitOptions)

This method is used to split a string into a maximum number of substrings based on the characters in an array passed on the argument and also we can pass the count of the maximum substring to return.

Syntax:

public String[] Split(char[] separator, int count, StringSplitOptions options);

Example:

// C# program to illustrate the  // Split(Char[], Int32,  // StringSplitOptions) Method  using System;  class Geeks {   static void Main(string[] args)  { // Taking a string  String str = "Geeks, For Geeks";  // Array of spliters  char[] sp = { ',', ' ' };  // Count of substrings // to be returned Int32 c = 2;  // Using the split method // with StringSplitOptions.None String[] list = str.Split(sp,  c, StringSplitOptions.None);  foreach(String s in list) Console.WriteLine(s); }  }  

Geeks For Geeks 

3. Split(String[], StringSplitOptions)

This method is used to split a string into substrings based on the strings in an array. We can also specify whether the substrings include empty array elements or not.

Syntax:

public String[] Split(String[] separator, StringSplitOptions options);

Example:

// C# program to illustrate the  // Split(String[], StringSplitOptions) Method  using System;  class Geeks {   static void Main(string[] args)   {   // Declaring and initializing the string  String str = "Geeks,For Geeks";  // Array of separators   String[] sp = { ",", " " };   // Splitting the string  String[] list = str.Split(sp, StringSplitOptions.None);   foreach(String s in list)   {   Console.WriteLine(s);   }   }  }  

Geeks For Geeks 

4. Split(char[])

This method is used to split a string into a maximum number of substrings based on the characters in an array. We can also specify the maximum number of substrings to return.

Syntax:

public String[] Split(char[] separator);

Example:

// C# program to illustrate the  // Split(Char[]) Method  using System;  class Geeks  {   static void Main(string[] args)   {   // Declaring and initializing the string  String str = "Geeks,For Geeks";     // Character array of separator  // to split the string  char[] separator = { ',', ' ' };     // Using the split method  String[] strlist = str.Split(separator);     foreach(String s in strlist)   {   Console.WriteLine(s);   }   }  }  

Geeks For Geeks 

5. Split(char[], StringSplitOptions )

This method splits a string into substrings based on the characters in an array passed as a separator. We can also specify whether empty array elements should be included or not using the second parameter StringSplitOptions.

Syntax:

public String[] Split(char[] separator, StringSplitOptions option);

Example:

// C# program to illustrate the use of  // Split(Char[], StringSplitOptions) method  using System;    class Geeks {   static void Main(string[] args)   {  String s = "Geeks, For Geeks";     // Character array as   // As a separator  char[] sp = { ',', ' ' };     // Using the method   String[] list = s.Split(sp,   StringSplitOptions.RemoveEmptyEntries);     foreach(String i in list)   {   Console.WriteLine(i);   }   }  }  

Geeks For Geeks 

6. Split(Char[], Int32)

This method is used to splits the string into a maximum number of substrings based on the characters in an array passed as a seperator. We can also specify the maximum number of substrings which we want to return.

public String[] Split(char[] separator, int count);

Example:

// C# program to illustrate Split(Char[], Int32) using System;  class Geeks  {   static void Main(string[] args)   {   // Declaring and initializing the string  string s = "Geeks,For Geeks";     // Character array of separators  char[] sp = { ',', ' ' };     // Using the split method  string[] list = s.Split(sp, 3);     foreach(string i in list)   {   Console.WriteLine(i);   }   }  } 

Geeks For Geeks