C# Boolean.CompareTo(Object)用法及代码示例

Boolean.CompareTo(Object)方法用于将当前实例与指定对象进行比较，并返回一个整数，该整数表明它们之间的关系。

用法:

public int CompareTo (object obj);

在这里，需要一个对象与当前实例进行比较或为null。

返回值：此方法返回一个带符号的整数，该整数显示当前实例和obj的相对顺序。

小于零：如果此实例为false且obj为true。
零：如果此实例和obj相等(两者均为true或均为false)。
大于零：如果此实例为true并且obj为false或null。

异常：如果obj不是布尔值，则抛出ArgumentException。

示例1:

// C# program to demonstrate the 
// Boolean.CompareTo(Object) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Declaring and initializing value1 
            bool value1 = true; 
  
            // Declaring and initializing value2 
            object value2 = true; 
  
            // 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 Boolean"); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

True is equal to True

示例2:对于ArgumentException

// C# program to demonstrate the 
// Boolean.CompareTo(Object) Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Declaring and initializing value1 
            bool value1 = true; 
  
            // Declaring and initializing value2 
            object value2 = 53554; 
  
            // 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 Boolean"); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

value2 must be Boolean
Exception Thrown: System.ArgumentException

参考：

https://docs.microsoft.com/en-us/dotnet/api/system.boolean.compareto?view=netframework-4.8#System_Boolean_CompareTo_System_Object_

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注：本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 C# | Boolean.CompareTo(Object) Method。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。