Tuple<T1,T2,T3,T4>.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,T3,T4> 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,T3,T4> 对象的字符串表示形式。

示例

下面的示例演示 ToString 了 方法。 它显示一个由 4 元组对象构成的数组的组件，这些对象包含城市名称、一年中的一个月以及该月的高温和最低平均气温。

using System;

public class Example
{
   public static void Main()
   {
      Tuple<string, int, int, int>[] temperatures = 
            { Tuple.Create("New York, NY", 4, 61, 43),
              Tuple.Create("Chicago, IL", 2, 34, 18), 
              Tuple.Create("Newark, NJ", 4, 61, 43),
              Tuple.Create("Boston, MA", 6, 77, 59),
              Tuple.Create("Detroit, MI", 9, 74, 53),
              Tuple.Create("Minneapolis, MN", 8, 81, 61) }; 
      // Display the array of 4-tuple objects.
      foreach (var temperature in temperatures)
         Console.WriteLine(temperature.ToString()); 
   }
}
// The example displays the following output:
//       (New York, NY, 4, 61, 43)
//       (Chicago, IL, 2, 34, 18)
//       (Newark, NJ, 4, 61, 43)
//       (Boston, MA, 6, 77, 59)
//       (Detroit, MI, 9, 74, 53)
//       (Minneapolis, MN, 8, 81, 61)

open System

let temperatures = 
    [| Tuple.Create("New York, NY", 4, 61, 43)
       Tuple.Create("Chicago, IL", 2, 34, 18)
       Tuple.Create("Newark, NJ", 4, 61, 43)
       Tuple.Create("Boston, MA", 6, 77, 59)
       Tuple.Create("Detroit, MI", 9, 74, 53)
       Tuple.Create("Minneapolis, MN", 8, 81, 61) |]

// Display the array of 4-tuple objects.
for temperature in temperatures do
    printfn $"{temperature}"
// The example displays the following output:
//       (New York, NY, 4, 61, 43)
//       (Chicago, IL, 2, 34, 18)
//       (Newark, NJ, 4, 61, 43)
//       (Boston, MA, 6, 77, 59)
//       (Detroit, MI, 9, 74, 53)
//       (Minneapolis, MN, 8, 81, 61)

Module Example
   Public Sub Main()
      Dim temperatures() = 
             { Tuple.Create("New York, NY", 4, 61, 43), _
               Tuple.Create("Chicago, IL", 2, 34, 18), _ 
               Tuple.Create("Newark, NJ", 4, 61, 43), _
               Tuple.Create("Boston, MA", 6, 77, 59), _
               Tuple.Create("Detroit, MI", 9, 74, 53), _
               Tuple.Create("Minneapolis, MN", 8, 81, 61) } 
      ' Display the array of 4-tuple objects.
      For Each temperature In temperatures
         Console.WriteLine(temperature.ToString())
      Next
   End Sub
End Module
' The example displays the following output:
'       (New York, NY, 4, 61, 43)
'       (Chicago, IL, 2, 34, 18)
'       (Newark, NJ, 4, 61, 43)
'       (Boston, MA, 6, 77, 59)
'       (Detroit, MI, 9, 74, 53)
'       (Minneapolis, MN, 8, 81, 61)

注解

此方法返回的字符串采用 Item1、Item2、Item3、Item4) (形式，其中 Item1、Item2、Item3 和 Item4 分别表示 、Item2、 Item3和 Item4 属性的值。Item1 如果任一属性值为 null，则表示为 String.Empty。