C# Decimal.ToInt32()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32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32位整數。

用法： public static int ToInt32 (decimal value);

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32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.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); 
        } 
    } 
}

輸出：

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

示例2:對於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); 
        } 
    } 
}

輸出：

Exception Thrown: System.OverflowException

參考：

https://docs.microsoft.com/en-us/dotnet/api/system.decimal.toint32?view=netframework-4.7.2

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注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Decimal.ToInt32() 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。