Tuple<T1,T2>.ToString 方法

定义

命名空间:

System

程序集:

System.Runtime.dll

Source:

Tuple.cs

返回表示此 Tuple<T1,T2> 实例的值的字符串。

public:
 override System::String ^ ToString();

public override string ToString ();

override this.ToString : unit -> string

Public Overrides Function ToString () As String

返回

String

此 Tuple<T1,T2> 对象的字符串表示形式。

示例

以下示例演示 了 ToString 方法。

using System;

public class Class1
{
   public static void Main()
   {
      Tuple<string, Nullable<int>>[] scores = 
                      { new Tuple<string, Nullable<int>>("Abbey", 92), 
                        new Tuple<string, Nullable<int>>("Dave", 88),
                        new Tuple<string, Nullable<int>>("Ed", null),
                        new Tuple<string, Nullable<int>>("Jack", 78),
                        new Tuple<string, Nullable<int>>("Linda", 99),
                        new Tuple<string, Nullable<int>>("Judith", 84), 
                        new Tuple<string, Nullable<int>>("Penelope", 82),
                        new Tuple<string, Nullable<int>>("Sam", 91) }; 
      foreach (var score in scores)
         Console.WriteLine(score.ToString());
   }
}
// The example displays the following output:
//       (Abbey, 92)
//       (Dave, 88)
//       (Ed, )
//       (Jack, 78)
//       (Linda, 99)
//       (Judith, 84)
//       (Penelope, 82)
//       (Sam, 91)

open System

let scores = 
    [| Tuple<string, Nullable<int>>("Abbey", 92) 
       Tuple<string, Nullable<int>>("Dave", 88)
       Tuple<string, Nullable<int>>("Ed", Nullable())
       Tuple<string, Nullable<int>>("Jack", 78)
       Tuple<string, Nullable<int>>("Linda", 99)
       Tuple<string, Nullable<int>>("Judith", 84)
       Tuple<string, Nullable<int>>("Penelope", 82)
       Tuple<string, Nullable<int>>("Sam", 91) |]
for score in scores do
    printfn $"{score.ToString()}"
// The example displays the following output:
//       (Abbey, 92)
//       (Dave, 88)
//       (Ed, )
//       (Jack, 78)
//       (Linda, 99)
//       (Judith, 84)
//       (Penelope, 82)
//       (Sam, 91)

Module modMain
   Public Sub Main()
      Dim scores() As Tuple(Of String, Nullable(Of Integer)) = 
                      { New Tuple(Of String, Nullable(Of Integer))("Abbey", 92), 
                        New Tuple(Of String, Nullable(Of Integer))("Dave", 88),
                        New Tuple(Of String, Nullable(Of Integer))("Ed", Nothing),                        New Tuple(Of String, Nullable(Of Integer))("Jack", 78),
                        New Tuple(Of String, Nullable(Of Integer))("Linda", 99),
                        New Tuple(Of String, Nullable(Of Integer))("Judith", 84), 
                        New Tuple(Of String, Nullable(Of Integer))("Penelope", 82),
                        New Tuple(Of String, Nullable(Of Integer))("Sam", 91) } 
      For Each score In scores
         Console.WriteLine(score.ToString())
      Next                        
   End Sub
End Module
' The example displays the following output:
'       (Abbey, 92)
'       (Dave, 88)
'       (Ed, )
'       (Jack, 78)
'       (Linda, 99)
'       (Judith, 84)
'       (Penelope, 82)
'       (Sam, 91)

注解

此方法返回的字符串采用 Item1、Item2) (的形式，其中 Item1 和 Item2 表示 和 Item2 属性的值Item1。 如果任一属性值为 null，则表示为 String.Empty。