LINQ | Partition Operator | Skip
In LINQ, partition operators are used for separating the given sequence into two portions without sorting the elements and return one of the portions. The Standard Query Operators supports 4 different types of partition operators:
- Skip
- SkipWhile
- Take
- TakeWhile
Skip Operator
The Skip operator is used to skips the elements up to the specified position in the given sequence or collection. Or in other words, we can say that it skips the specified number of elements and return the remaining elements present in the given collection or sequence.
- It does not support query syntax in C# and VB.Net languages. But you can use the Skip method to query variable or you can wrap your query in brackets and then the call Skip method.
- It support method syntax in both C# and VB.Net languages.
- It present in both the Queryable and Enumerable class.
- It is implemented by using deferred execution.
- It will throw an ArgumentNullException if the source is null.
Example 1:
// C# program to illustrate the // concept of Skip operator using System; using System.Linq; class GFG { static public void Main() { // Data source char [] sequence1 = { 'c' , 'y' , 'p' , 'q' , 'l' , 'a' }; int [] sequence2 = {202, 2002, 20002, 200002, 2000002}; // Display the sequences Console.WriteLine( "Original Sequence 1 is: " ); foreach ( var s1 in sequence1) { Console.WriteLine(s1); } // Query which skips starting 4 // elements of the sequence1 // Using Skip method var result1 = sequence1.Skip(4); Console.WriteLine( "New Sequence: " ); // Display new sequence foreach ( var val in result1) { Console.WriteLine(val); } Console.WriteLine( "Original Sequence 2 is: " ); foreach ( var s2 in sequence2) { Console.WriteLine(s2); } // Query which skip starting 2 // elements of the sequence2 // Using Skip method var result2 = sequence2.Skip(2); Console.WriteLine( "New Sequence: " ); // Display new sequence foreach ( var val in result2) { Console.WriteLine(val); } } } |
Output:
Original Sequence 1 is: c y p q l a New Sequence: l a Original Sequence 2 is: 202 2002 20002 200002 2000002 New Sequence: 20002 200002 2000002
Example 2:
// C# program to find the Id's of // the employees starting from 211 using System; using System.Linq; using System.Collections.Generic; // Employee details public class Employee { public int emp_id { get ; set ; } public string emp_name { get ; set ; } public string emp_gender { get ; set ; } public string emp_hire_date { get ; set ; } public int emp_salary { get ; set ; } } public class GFG { // Main method static public void Main() { List<Employee> emp = new List<Employee>() { new Employee() {emp_id = 209, emp_name = "Anjita" , emp_gender = "Female" , emp_hire_date = "12/3/2017" , emp_salary = 20000}, new Employee() {emp_id = 210, emp_name = "Soniya" , emp_gender = "Female" , emp_hire_date = "22/4/2018" , emp_salary = 30000}, new Employee() {emp_id = 211, emp_name = "Rohit" , emp_gender = "Male" , emp_hire_date = "3/5/2016" , emp_salary = 40000}, new Employee() {emp_id = 212, emp_name = "Supriya" , emp_gender = "Female" , emp_hire_date = "4/8/2017" , emp_salary = 80000}, new Employee() {emp_id = 213, emp_name = "Anil" , emp_gender = "Male" , emp_hire_date = "12/1/2016" , emp_salary = 60000}, new Employee() {emp_id = 214, emp_name = "Anju" , emp_gender = "Female" , emp_hire_date = "17/6/2015" , emp_salary = 50000}, }; // Query to find the Id's of // the employees starting from 211 // Using Skip method var res = ( from e in emp select e.emp_id) .Skip(2); foreach ( var val in res) { Console.WriteLine( "Employee Id: {0}" , val); } } } |
Output:
Employee Id: 211 Employee Id: 212 Employee Id: 213 Employee Id: 214
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