C＃中的Decimal.Subtract()方法

此方法用于从另一个中减去一个指定的十进制值。

Syntax: public static decimal Subtract (decimal a1, decimal a2);

Parameters:
a1: This parameter specifies the minuend.
a2: This parameter specifies the subtrahend.

Return Value: Result of subtracting a2 from a1.

异常：如果返回值小于MinValue或大于MaxValue，则此方法将给出OverflowException 。

下面的程序说明了上述方法的用法：

范例1：

// C# program to demonstrate the
// Decimal.Subtract(Decimal, Decimal)
// Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        try {
  
            // Declaring the decimal
            // variables
            Decimal a1 = .01m;
            Decimal a2 = .03m;
  
            // Subtracting the two Decimal value
            // using Subtract() method
            Decimal value = Decimal.Subtract(a1, a2);
  
            // Display the Result
            Console.WriteLine("Result is : {0}",
                                         value);
        }
  
        catch (OverflowException e) {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

输出：

Result is : -0.02

示例2：对于OverflowException

// C# program to demonstrate the
// Decimal.Subtract(Decimal, Decimal)
// Method
using System;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        try {
  
            // Declaring the decimal variables
            Decimal a1 = Decimal.MinValue;
            Decimal a2 = Decimal.MaxValue;
  
            // Subtracting the two Decimal value
            // using Subtract() method;
            Decimal value = Decimal.Subtract(a1, a2);
  
            // Display the Result
            Console.WriteLine("Result is : {0}",
                                        value);
        }
  
        catch (OverflowException e) 
        {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

输出：

Exception Thrown: System.OverflowException

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.decimal.subtract?view=netcore-2.2