In LINQ, Partition Operators are extremely helpful in dividing a list/collection into two parts and returns only one part of the desired items. The following are the different types of partition operators available in LINQ.
Topics
- TAKE
- TAKEWHILE
- SKIP
- SKIPWHILE
LINQ Take Operator
Take Operator will return a specified number of elements from the starting of a collection/List
outList=my_Datasource.Take(N)
where, N=1,2,3,4,5….
LINQ Take Operator Example using C#
using System; using System.Collections.Generic; using System.Linq; namespace LinqExamplesCSharp { class Program { static void Main(string[] args) { string[] food_Items = { "Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton" }; //Trying to take first few mentioned elements from the list... IEnumerable<string> result = food_Items.Take(2); foreach (var item in result) { Console.WriteLine(item); } Console.ReadLine(); } } }Output: Butter Chicken Chicken 65
LINQ Take Operator Example using Vb.Net
Module Module1
Sub Main()
Dim food_List As String() = {"Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton"}
'Trying to take first few mentioned elements from the list...
Dim result As IEnumerable(Of String) = food_List.Take(2)
For Each item In result
Console.WriteLine(item)
Next
Console.ReadLine()
End Sub
End Module
Output:
Butter Chicken
Chicken 65
LINQ TakeWhile Operator
TakeWhile Operator will return the elements from the starting of a collection/List as long as the condition specified holds true.
outList=my_Datasource.TakeWhile(“Expression”)
LINQ TakeWhile Operator Example using C#
using System; using System.Collections.Generic; using System.Linq; namespace LinqExamplesCSharp { class Program { static void Main(string[] args) { string[] food_Items = { "Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton" }; //Trying to take first few elements from the list till the conditions holds true... IEnumerable<string> result = food_Items.TakeWhile(x=>x.Contains("Chicken")); foreach (var item in result) { Console.WriteLine(item); } Console.ReadLine(); } } }Output: Butter Chicken Chicken 65
LINQ TakeWhile Operator Example using Vb.Net
Module Module1
Sub Main()
Dim food_List As String() = {"Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton"}
'Trying to take first few elements from the list till the conditions holds true...
Dim result As IEnumerable(Of String) = food_List.TakeWhile(Function(x) x.Contains("Chicken"))
For Each item In result
Console.WriteLine(item)
Next
Console.ReadLine()
End Sub
End Module
Output:
Butter Chicken
Chicken 65
LINQ Skip Operator
Skip Operator will skip the specified number of elements from the starting of a collection/list and returns the remaining elements from the collection/list.
outList=my_Datasource.Skip(N)
where, N=1,2,3,4,5….
LINQ Skip Operator Example using C#
using System; using System.Collections.Generic; using System.Linq; namespace LinqExamplesCSharp { class Program { static void Main(string[] args) { string[] food_Items = { "Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton" }; //Trying to skip first few mentioned elements from the list... IEnumerable<string> result = food_Items.Skip(2); foreach (var item in result) { Console.WriteLine(item); } Console.ReadLine(); } } }Output: Fish Chicken tikka Mutton
LINQ Skip Operator Example using Vb.Net
Module Module1
Sub Main()
Dim food_List As String() = {"Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton"}
'Trying to skip first few mentioned elements from the list...
Dim result As IEnumerable(Of String) = food_List.Skip(2)
For Each item In result
Console.WriteLine(item)
Next
Console.ReadLine()
End Sub
End Module
Output:
Fish
Chicken tikka
Mutton
LINQ SkipWhile Operator
SkipWhile Operator will skip the specified number of elements from the starting of a collection/list until the provided condition remains true and returns the remaining elements from the collection/list.
outList=my_Datasource.SkipWhile(“Expression”)
LINQ SkipWhile Operator Example using C#
using System; using System.Collections.Generic; using System.Linq; namespace LinqExamplesCSharp { class Program { static void Main(string[] args) { string[] food_Items = { "Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton" }; //Trying to skip first few elements from the list till the conditions holds true... IEnumerable<string> result = food_Items.SkipWhile(x=>x.Contains("Chicken")); foreach (var item in result) { Console.WriteLine(item); } Console.ReadLine(); } } }Output: Fish Butter Chicken Chicken 65
LINQ SkipWhile Operator Example using Vb.Net
Module Module1
Sub Main()
Dim food_List As String() = {"Chicken 65", "Butter Chicken", "Fish", "Chicken tikka", "Mutton"}
'Trying to skip first few elements from the list till the conditions holds true...
Dim result As IEnumerable(Of String) = food_List.SkipWhile(Function(x) x.Contains("Chicken"))
For Each item In result
Console.WriteLine(item)
Next
Console.ReadLine()
End Sub
End Module
Output:
Fish
Butter Chicken
Chicken 65
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