C# Decimal.ToInt32()用法及代码示例

此方法用于将指定的Decimal的值转换为等效的32位带符号整数。用户还可以使用Explicit赋值运算符将Decimal值转换为32位整数。

用法： public static int ToInt32 (decimal value);

在此，该值是要转换的十进制数。

返回值：它返回一个等于指定值的32位带符号整数。

异常：如果指定的值小于MinValue或大于MaxValue，则此方法将给出OverflowException。

以下示例程序旨在说明上述方法的用法：

示例1:

// C# program to demonstrate the 
// Decimal.ToInt32(Decimal) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Taking decimal variables 
            Decimal dec1 = 2147483647M; 
            Decimal dec2 = 21458565.2996m; 
  
            // using Decimal.ToInt32(Decimal) Method 
            // Here int means Int32 
            int val1 = Decimal.ToInt32(dec1); 
              
            // using Decimal.ToInt32(Decimal) Method 
            // Here int means Int32 
            int val2 = Decimal.ToInt32(dec2); 
              
  
            // Printing the Int32 value 
            Console.WriteLine("The Int32 value "
                            + "is : {0}", val1); 
                                  
            // Printing the Int32 value 
            Console.WriteLine("The Int32 value "
                            + "is : {0}", val2); 
                          
        } 
  
        catch (OverflowException e)  
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

The Int32 value is : 2147483647
The Int32 value is : 21458565

示例2:对于OverflowException

// C# program to demonstrate the 
// Decimal.ToInt32(Decimal) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Taking decimal variables 
            // taking a decimal number  
            // above the range of Int32 
            Decimal dec1 = 2147483648M; 
              
            // Taking the maximum value  
            // of Decimal 
            Decimal dec2 = Decimal.MaxValue; 
  
            // using Decimal.ToInt32(Decimal) Method 
            // Here int means Int32 
            // It will give error as decimal number  
            // is above the range of Int32 
            int val1 = Decimal.ToInt32(dec1); 
              
            // using Decimal.ToInt32(Decimal) Method 
            // Here int means Int32 
            // It will give error as Decimal.MaxValue 
            // value is out of range from Int32 
            int val2 = Decimal.ToInt32(dec2); 
              
  
            // Printing the Int32 value 
            Console.WriteLine("The Int32 value "
                            + "is : {0}", val1); 
                                  
            // Printing the Int32 value 
            Console.WriteLine("The Int32 value "
                            + "is : {0}", val2); 
                          
        } 
  
        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/en-us/dotnet/api/system.decimal.toint32?view=netframework-4.7.2

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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 Decimal.ToInt32() 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。