C# Decimal.ToInt64()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64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64位整数。

用法： public static long ToInt64 (decimal d);

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64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.ToInt64(Decimal) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Taking decimal variables 
            Decimal dec1 = -926534668654775808.859m; 
            Decimal dec2 = 4897498545.2364654M; 
  
            // using Decimal.ToInt64(Decimal) Method 
            // Here long means Int64 
            long val1 = Decimal.ToInt64(dec1); 
              
            // using Decimal.ToInt64(Decimal) Method 
            // Here long means Int64 
            long val2 = Decimal.ToInt64(dec2); 
              
  
            // Printing the Int64 value 
            Console.WriteLine("The Int64 value "
                            + "is : {0}", val1); 
                                  
            // Printing the Int64 value 
            Console.WriteLine("The Int64 value "
                            + "is : {0}", val2); 
                          
        } 
  
        catch (OverflowException e)  
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

The Int64 value is : -926534668654775808
The Int64 value is : 4897498545

示例2:对于OverflowException

// C# program to demonstrate the 
// Decimal.ToInt64(Decimal) Method 
using System; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // Taking decimal variables 
            Decimal dec1 = Decimal.MinValue; 
              
            // Taking the maximum value  
            // of Decimal 
            Decimal dec2 = Decimal.MaxValue; 
  
            // using Decimal.ToInt64(Decimal) Method 
            // Here long means Int64 
            // It will give error 
            long val1 = Decimal.ToInt64(dec1); 
              
            // using Decimal.ToInt64(Decimal) Method 
            // Here long means Int64 
            // It will give error 
            long val2 = Decimal.ToInt64(dec2); 
              
  
            // Printing the Int64 value 
            Console.WriteLine("The Int64 value "
                            + "is : {0}", val1); 
                                  
            // Printing the Int64 value 
            Console.WriteLine("The Int64 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.toint64?view=netframework-4.7.2

相关用法

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.ToInt64() 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。