VB.NET Enumerable.Select方法代码示例

OGeek|极客世界-中国程序员成长平台 › 门户 › 编程› VB.NET›VB.NET教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了VB.NET中System.Linq.Enumerable.Select方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Enumerable.Select方法的具体用法？VB.NET Enumerable.Select怎么用？VB.NET Enumerable.Select使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。

在下文中一共展示了Enumerable.Select方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: fruits

' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Project each item in the array to an anonymous type
' that stores the item's index in the array and
' a substring of each item whose length is equal
' to the index position in the original array.
Dim query =
fruits.Select(Function(fruit, index) _
                  New With {index, .Str = fruit.Substring(0, index)})

Dim output As New System.Text.StringBuilder
For Each obj In query
    output.AppendLine(obj.ToString())
Next

' Display the output.
Console.WriteLine(output.ToString())

开发者ID:VB.NET开发者，项目名称:System.Linq，代码行数:19，代码来源:Enumerable.Select

输出：

{ index = 0, Str =  }
{ index = 1, Str = b }
{ index = 2, Str = ma }
{ index = 3, Str = ora }
{ index = 4, Str = pass }
{ index = 5, Str = grape }

示例2: IEnumerable

' Create a collection of sequential integers
' from 1 to 10 and project their squares.
Dim squares As IEnumerable(Of Integer) =
Enumerable.Range(1, 10).Select(Function(x) x * x)

Dim output As New System.Text.StringBuilder
For Each num As Integer In squares
    output.AppendLine(num)
Next

' Display the output.
Console.WriteLine(output.ToString())

开发者ID:VB.NET开发者，项目名称:System.Linq，代码行数:12，代码来源:Enumerable.Select

输出：