Tuple<T1,T2>.ToString 方法

定义

命名空间:
System
程序集:
mscorlib.dll, System.Runtime.dll
程序集:
mscorlib.dll
程序集:
System.Runtime.dll
程序集:
netstandard.dll

返回一个字符串，表示此 Tuple<T1,T2> 实例的值。

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

下面的示例演示了该方法 ToString 。

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形式（Item1、Item2），其中 Item1 和 Item2 表示属性的值Item1Item2。 如果任一属性值为 null，则表示为 String.Empty。

适用于