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C# Decimal.CompareTo()用法及代码示例


此方法用于将当前实例与指定的对象或Decimal进行比较，并返回其相对值的指示。此方法的重载列表中有2种方法，如下所示：

    • CompareTo(Decimal)方法
    • CompareTo(Object)方法

Decimal.CompareTo(Decimal) Method

此方法用于将当前实例与指定的Decimal对象进行比较，并返回其相对值的比较。


用法:

public int CompareTo (decimal value);

在这里，需要对象与该实例进行比较。

返回值：它返回一个32位带符号的数字，指示当前实例和value参数的相对值，如下所示：

  • 小于零：如果当前实例
  • 零：如果当前实例=值
  • 大于零：如果当前实例>值

以下示例程序旨在说明Decimal.CompareTo(Decimal)方法的用法

示例1: 

// C# program to demonstrate the 
// Decimal.CompareTo(Double) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Declaring and initializing value1 
        decimal value1 = 10; 
  
        // Declaring and initializing value2 
        decimal value2 = 20; 
  
        // compare both decimal value 
        // using CompareTo() method 
        int status = value1.CompareTo(value2); 
  
        // checking the status 
        if (status > 0) 
            Console.WriteLine("{0} is greater than {1}", 
                                        value1, value2); 
        else if (status < 0) 
            Console.WriteLine("{0} is less than {1}", 
                                     value1, value2); 
        else
            Console.WriteLine("{0} is equal to {1}", 
                                    value1, value2); 
    } 
}
输出： 
10 is less than 20

示例2: 

// C# program to demonstrate the 
// Decimal.CompareTo(Double) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        // calling get() method 
        get(5, 7); 
        get(30, 20); 
        get(10, 20); 
        get(7, -12); 
    } 
  
    // defining get() method 
    public static void get(decimal value1, 
                          decimal value2) 
    { 
  
        // using CompareTo() method 
        int status = value1.CompareTo(value2); 
  
        // checking the status 
        if (status > 0) 
            Console.WriteLine("{0} is greater than {1}", 
                                        value1, value2); 
        else if (status < 0) 
            Console.WriteLine("{0} is less than {1}", 
                                     value1, value2); 
        else
            Console.WriteLine("{0} is equal to {1}", 
                                    value1, value2); 
    } 
}
输出： 
5 is less than 7
30 is greater than 20
10 is less than 20
7 is greater than -12

Decimal.CompareTo(Object) Method

此方法用于将当前实例与指定对象进行比较，并返回其相对值的比较。

用法: 


public int CompareTo (object value);

在这里，它需要对象与该实例进行比较，或者为null。

返回值：它返回一个32位带符号的数字，指示当前实例和value参数的相对值，如下所示：

  • 小于零：如果当前实例
  • 零：如果当前实例=值
  • 大于零：如果当前实例>值

异常：如果value不为null，则抛出ArgumentException。

下面的程序说明Decimal.CompareTo(Object)方法的用法

示例1:

// C# program to demonstrate the 
// Decimal.CompareTo(object) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Declaring and initializing value1 
            decimal value1 = 10; 
  
            // Declaring and initializing value2 
            object value2 = (decimal)9.8765400E+2; 
  
            // compare both decimal value 
            // using CompareTo() method 
            int status = value1.CompareTo(value2); 
  
            // cheking the status 
            if (status > 0) 
                Console.WriteLine("{0} is greater than {1}", 
                                            value1, value2); 
  
            else if (status < 0) 
                Console.WriteLine("{0} is less than {1}", 
                                       value1, value2); 
            else
                Console.WriteLine("{0} is equal to {1}", 
                                        value1, value2); 
        } 
  
        catch (ArgumentException e)  
        { 
            Console.WriteLine("value2 must be decimal"); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}
输出： 
10 is less than 987.654

示例2:对于ArgumentException

// C# program to demonstrate the 
// Decimal.CompareTo(object) Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Declaring and initializing value1 
            decimal value1 = 10; 
  
            // Declaring and initializing value2 
            object value2 = 1 / 3; 
  
            // using CompareTo() method 
            int status = value1.CompareTo(value2); 
  
            // checking the status 
            if (status > 0) 
                Console.WriteLine("{0} is greater than {1}", 
                                            value1, value2); 
  
            else if (status < 0) 
                Console.WriteLine("{0} is less than {1}", 
                                         value1, value2); 
            else
                Console.WriteLine("{0} is equal to {1}", 
                                        value1, value2); 
        } 
  
        catch (ArgumentException e)  
        { 
            Console.WriteLine("value2 must be decimal"); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}
输出： 
value2 must be decimal
Exception Thrown: System.ArgumentException

参考：



相关用法


注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 Decimal.CompareTo() Method in C#。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。