ToList – LINQのツボ

Contents

1 機能
2 オーバーロード
3 引数
4 サンプル
5 関連
6 参考

機能

IEnumerable<T> から List<T> を作成します。

オーバーロード

ToListにはオーバーロードはありません。

引数

なし

サンプル

string[] fruits = { "apple", "passionfruit", "banana", "mango", 
                      "orange", "blueberry", "grape", "strawberry" };

List<int> lengths = fruits.Select(fruit => fruit.Length).ToList();

foreach (int length in lengths)
{
    Console.WriteLine(length);
}

/*
 This code produces the following output:

 5
 12
 6
 5
 6
 9
 5
 10
*/

string[] fruits = { "apple", "passionfruit", "banana", "mango",

"orange", "blueberry", "grape", "strawberry" };

List<int> lengths = fruits.Select(fruit => fruit.Length).ToList();

foreach (int length in lengths)

{

Console.WriteLine(length);

}

This code produces the following output:

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

' Project the length of each string and 
' put the length values into a List object.
Dim lengths As List(Of Integer) =
fruits _
.Select(Function(fruit) fruit.Length) _
.ToList()

' Display the results.
Dim output As New System.Text.StringBuilder
For Each length As Integer In lengths
    output.AppendLine(length)
Next
MsgBox(output.ToString())

' This code produces the following output:
'
' 5
' 12
' 6
' 5
' 6
' 9
' 5
' 10

' Create an array of strings.

Dim fruits() As String =

{"apple", "passionfruit", "banana", "mango",

"orange", "blueberry", "grape", "strawberry"}

' Project the length of each string and

' put the length values into a List object.

Dim lengths As List(Of Integer) =

fruits _

.Select(Function(fruit) fruit.Length) _

.ToList()

' Display the results.

Dim output As New System.Text.StringBuilder

For Each length As Integer In lengths

output.AppendLine(length)

MsgBox(output.ToString())

' This code produces the following output:

' 5

' 12

' 6

' 5

' 6

' 9

' 5

' 10

参考

Enumerable.ToList

機能

オーバーロード

引数

サンプル

関連

参考

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