LINQ 中的分区运算符

将输入序列分成两个单独的部分，而无需重新排列序列的元素，然后返回其中一个。

运算符	描述	C# 查询表达式语法	VB 查询表达式语法
Skip	跳过序列中指定数量的元素并返回剩余元素	不适用	跳过
SkipWhile	与 Skip 相同，唯一的不同之处在于要跳过的元素数量由布尔条件指定	不适用	Skip While
Take	从序列中取出指定数量的元素并跳过剩余的元素	不适用	Take
TakeWhile	与 Take 相同，唯一的不同之处在于要取出的元素数量由布尔条件指定	不适用	Take While

跳过 - 查询表达式的示例

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

当 VB 中的上述代码被编译并执行时，它会产生以下结果 −

there
was
a
jungle

Skip While 示例 - 查询表达式

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

当 VB 中的上述代码被编译并执行时，它会产生以下结果 −

once
upon
a
was
a
jungle

Take 示例 - 查询表达式

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

当 VB 中的上述代码被编译并执行时，它会产生以下结果 −

once
upon
a

Take While 示例 - 查询表达式

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

当 VB 中的上述代码被编译并执行时，它会产生以下结果 −