Tuple<T1>.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> 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> 对象的字符串表示形式。

示例

下面的示例演示 ToString 了 方法。

using System;

public class Example
{
   public static void Main()
   {
      var tuple1Double = Tuple.Create(3.456e-18);
      DisplayTuple(tuple1Double);
      
      var tuple1String = Tuple.Create("Australia");
      DisplayTuple(tuple1String);
      
      var tuple1Bool = Tuple.Create(true);
      DisplayTuple(tuple1Bool);
      
      var tuple1Char = Tuple.Create('a');
      DisplayTuple(tuple1Char);
   }

   private static void DisplayTuple(object obj)
   {
      Console.WriteLine(obj.ToString());
   }
}
// The example displays the following output:
//       (3.456E-18)
//       (Australia)
//       (True)
//       (a)

open System

let displayTuple obj =
    // String interpolation implicitly calls .ToString().
    printfn $"{obj}"

let tuple1Double = Tuple.Create 3.456e-18
displayTuple tuple1Double

let tuple1String = Tuple.Create "Australia"
displayTuple tuple1String

let tuple1Bool = Tuple.Create true
displayTuple tuple1Bool

let tuple1Char = Tuple.Create 'a'
displayTuple tuple1Char
// The example displays the following output:
//       (3.456E-18)
//       (Australia)
//       (True)
//       (a)

Module Example
   Public Sub Main()
      Dim tuple1Double = Tuple.Create(3.456e-18)
      DisplayTuple(tuple1Double)
      
      Dim tuple1String = Tuple.Create("Australia")
      DisplayTuple(tuple1String)
      
      Dim tuple1Bool = Tuple.Create(True)
      DisplayTuple(tuple1Bool)
      
      Dim tuple1Char = Tuple.Create("a"c)
      DisplayTuple(tuple1Char)
   End Sub
   
   Private Sub DisplayTuple(obj As Object)
      Console.WriteLine(obj.ToString())
   End Sub
End Module
' The example displays the following output:
'       (3.456E-18)
'       (Australia)
'       (True)
'       (a)

注解

此方法返回的字符串采用 Item1 () 的形式，其中 Item1 表示 属性的值 Item1 。 如果 的Item1null值为 ，则表示为 String.Empty。