C# Boolean.CompareTo(Object)用法及代碼示例

Boolean.CompareTo(Object)方法用於將當前實例與指定對象進行比較，並返回一個整數，該整數表明它們之間的關係。

用法:

public int CompareTo (object obj);

在這裏，需要一個對象與當前實例進行比較或為null。

返回值：此方法返回一個帶符號的整數，該整數顯示當前實例和obj的相對順序。

小於零：如果此實例為false且obj為true。
零：如果此實例和obj相等(兩者均為true或均為false)。
大於零：如果此實例為true並且obj為false或null。

異常：如果obj不是布爾值，則拋出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); 
        } 
    } 
}

輸出：

True is equal to True

示例2:對於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); 
        } 
    } 
}

輸出：

value2 must be Boolean
Exception Thrown: System.ArgumentException

參考：

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

相關用法

注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 C# | Boolean.CompareTo(Object) Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。