//引入命名空间
using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Define a custom NumberFormatInfo object with "~" as its negative sign.
      NumberFormatInfo nfi = new NumberFormatInfo();
      nfi.NegativeSign = "~";
      
      // Initialize an array of SByte values.
      sbyte[] bytes = { -122, 17, 124 };

      // Display the formatted result using the custom provider.
      Console.WriteLine("Using the custom NumberFormatInfo object:");
      foreach (sbyte value in bytes)
         Console.WriteLine(value.ToString(nfi));

      Console.WriteLine();
          
      // Display the formatted result using the invariant culture.
      Console.WriteLine("Using the invariant culture:");
      foreach (sbyte value in bytes)
         Console.WriteLine(value.ToString(NumberFormatInfo.InvariantInfo));
   }
}

//引入命名空间
using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Define cultures whose formatting conventions are to be used.
      CultureInfo[] cultures = { CultureInfo.CreateSpecificCulture("en-US"), 
                                 CultureInfo.CreateSpecificCulture("fr-FR"), 
                                 CultureInfo.CreateSpecificCulture("es-ES") };
      sbyte positiveNumber = 119;
      sbyte negativeNumber = -45;
      string[] specifiers = {"G", "C", "D4", "E2", "F", "N", "P", "X2"}; 
      
      foreach (string specifier in specifiers)
      {
         foreach (CultureInfo culture in cultures)
            Console.WriteLine("{0,2} format using {1} culture: {2, 16} {3, 16}",  
                              specifier, culture.Name, 
                              positiveNumber.ToString(specifier, culture), 
                              negativeNumber.ToString(specifier, culture));
         Console.WriteLine();
      }
   }
}

//引入命名空间
using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      sbyte[] values = { -124, 0, 118 };
      string[] specifiers = { "G", "C", "D3", "E2", "e3", "F", 
                              "N", "P", "X", "00.0", "#.0", 
                              "000;(0);**Zero**" };
      
      foreach (sbyte value in values)
      {
         foreach (string specifier in specifiers)
            Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier));
         Console.WriteLine();
      }
   }
}

//引入命名空间
using System;

public class Example
{
   public static void Main()
   {
      sbyte value = -123;
      // Display value using default ToString method.
      Console.WriteLine(value.ToString());            // Displays -123
      // Display value using some standard format specifiers.
      Console.WriteLine(value.ToString("G"));         // Displays -123
      Console.WriteLine(value.ToString("C"));         // Displays ($-123.00)
      Console.WriteLine(value.ToString("D"));         // Displays -123
      Console.WriteLine(value.ToString("F"));         // Displays -123.00
      Console.WriteLine(value.ToString("N"));         // Displays -123.00
      Console.WriteLine(value.ToString("X"));         // Displays 85
   }
}