C# Decimal.ToInt64()用法及代碼示例

此方法用於將指定的Decimal的值轉換為等效的64位帶符號整數。用戶還可以使用Explicit賦值運算符將Decimal值轉換為64位整數。

用法： public static long ToInt64 (decimal d);

在此，該值是要轉換的十進製數。

返回值：它返回一個等於指定值的64位帶符號整數。

異常：如果指定的值小於MinValue或大於MaxValue，則此方法將給出OverflowException。

以下示例程序旨在說明上述方法的用法：

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); 
        } 
    } 
}

輸出：

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

示例2:對於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); 
        } 
    } 
}

輸出：

Exception Thrown: System.OverflowException

參考：

https://docs.microsoft.com/en-us/dotnet/api/system.decimal.toint64?view=netframework-4.7.2

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注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Decimal.ToInt64() Method in C#。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。