C# DateTime.ToFileTime()用法及代碼示例

此方法用於將當前DateTime對象的值轉換為Windows文件時間。

用法： public long ToFileTime ();

返回值：此方法返回表示為Windows文件時間的當前DateTime對象的值。

異常：如果結果文件時間表示的是UTC時間1601年1月1日午夜12:00之前的日期和時間，則此方法將提供ArgumentOutOfRangeException。

以下示例程序旨在說明DateTime.ToFileTime()方法的使用：

示例1:

// C# program to demonstrate the 
// DateTime.ToFileTime() 
// Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // creating object of DateTime 
            DateTime date = new DateTime(2011, 1, 
                                    1, 4, 0, 15); 
  
            // converting current DateTime  
            // object to a Windows file time. 
            // using ToFileTime() method; 
            long value = date.ToFileTime(); 
  
            // Display the TimeSpan 
            Console.WriteLine("Windows file time "+ 
                                  "is {0}", value); 
        } 
  
        catch (ArgumentOutOfRangeException e)  
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

輸出：

Windows file time is 129383280150000000

示例2:對於ArgumentOutOfRangeException

// C# program to demonstrate the 
// DateTime.ToFileTime() 
// Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // creating object of DateTime 
            DateTime date = new DateTime(1600, 1, 
                                    1, 4, 0, 15); 
  
            // converting current DateTime 
            // object to a Windows file time. 
            // using ToFileTime() method; 
            long value = date.ToFileTime(); 
  
            // Display the TimeSpan 
            Console.WriteLine("Windows file time"+ 
                                " is {0}", value); 
        } 
  
        catch (ArgumentOutOfRangeException e)  
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

輸出：

Exception Thrown: System.ArgumentOutOfRangeException

參考：

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

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 DateTime.ToFileTime() 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。