Partition Operators in LINQ


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Divide an input sequence into two separate sections without rearranging the elements of the sequence and then returning one of them.

Operator Description C# Query Expression Syntax VB Query Expression Syntax
Skip Skips some specified number of elements within a sequence and returns the remaining ones Not Applicable Skip
SkipWhile Same as that of Skip with the only exception that number of elements to skip are specified by a Boolean condition Not Applicable Skip While
Take Take a specified number of elements from a sequence and skip the remaining ones Not Applicable Take
TakeWhile Same as that of Take except the fact that number of elements to take are specified by a Boolean condition Not Applicable Take While

Example of Skip - Query Expression

VB

Module Module1

   Sub Main()
   
      Dim words = {"once", "upon", "a", "time", "there", "was", "a", "jungle"}

      Dim query = From word In words
                  Skip 4

      Dim sb As New System.Text.StringBuilder()
	  
      For Each str As String In query
         sb.AppendLine(str)
         Console.WriteLine(str)
      Next
	  
      Console.ReadLine()
	  
   End Sub
  
End Module

When the above code in VB is compiled and executed, it produces the following result −

there
was
a
jungle

Example of Skip While - Query Expression

VB

Module Module1

   Sub Main()
   
      Dim words = {"once", "upon", "a", "time", "there", "was", "a", "jungle"}

      Dim query = From word In words 
                  Skip While word.Substring(0, 1) = "t" 

      Dim sb As New System.Text.StringBuilder()
	  
      For Each str As String In query
         sb.AppendLine(str)
         Console.WriteLine(str)
      Next 
	  
      Console.ReadLine()
   End Sub
  
End Module

When the above code in VB is compiled and executed, it produces the following result −

once
upon
a
was
a
jungle

Example of Take - Query Expression

VB

Module Module1

   Sub Main()
   
      Dim words = {"once", "upon", "a", "time", "there", "was", "a", "jungle"}

      Dim query = From word In words 
                  Take 3 

      Dim sb As New System.Text.StringBuilder()
	  
      For Each str As String In query
         sb.AppendLine(str)
         Console.WriteLine(str)
      Next 
	  
      Console.ReadLine()
	  
   End Sub
   
End Module

When the above code in VB is compiled and executed, it produces the following result −

once
upon
a

Example of Take While - Query Expression

VB

Module Module1

   Sub Main()
   
      Dim words = {"once", "upon", "a", "time", "there", "was", "a", "jungle"}

      Dim query = From word In words 
                  Take While word.Length < 6 

      Dim sb As New System.Text.StringBuilder()
	  
      For Each str As String In query
         sb.AppendLine(str)
         Console.WriteLine(str)
      Next
	  
      Console.ReadLine()
	  
   End Sub
   
End Module

When the above code in VB is compiled and executed, it produces the following result −

once
upon
a
time
there
was
a
linq_query_operators.htm
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