DateTime.FromFileTime(Int64)方法用於將指定的Windows文件時間轉換為等效的本地時間。
用法： public static DateTime FromFileTime (long fileTime);
Here, it takes a Windows file time expressed in ticks.
返回值：此方法返回一個對象，該對象表示與fileTime參數表示的日期和時間等效的本地時間。
異常：如果fileTime小於0或表示時間大於MaxValue，則此方法將提供ArgumentOutOfRangeException。
以下示例程序旨在說明DateTime.FromFileTime(Int64)方法的用法：
示例1:
// C# program to demonstrate the
// DateTime.FromFileTime(Int64) Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// creating object of DateTime
DateTime date1 = new DateTime(2010, 3, 14, 2, 30, 00);
// converting 2500000000000 file
// time represented in ticks
// into DateTime format
// using FromBinary() method
DateTime date2 = DateTime.FromFileTime(2500000000000);
// Display the date1
System.Console.WriteLine("DateTime before "
+ "operation: {0:y} {0:dd}", date1);
// Display the date2
System.Console.WriteLine("\nDateTime after"
+ " operation: {0:y} {0:dd}", date2);
}
catch (ArgumentOutOfRangeException e)
{
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
輸出：
DateTime before operation: 2010 March 14 DateTime after operation: 1601 January 03
示例2:對於ArgumentOutOfRangeException
// C# program to demonstrate the
// DateTime.FromFileTime() Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// creating object of DateTime
DateTime date1 = new DateTime(2010, 3,
14, 2, 30, 00);
// converting -1 file time
// represented in ticks
// into DateTime format
// using FromBinary() method
DateTime date2 = DateTime.FromFileTime(-1);
// Display the date1
System.Console.WriteLine("DateTime before "
+ "operation: {0:y} {0:dd}",date1);
// Display the date2
System.Console.WriteLine("\nDateTime after"
+ " operation: {0:y} {0:dd}", date2);
}
catch (ArgumentOutOfRangeException e) {
Console.WriteLine("fileTime is less than 0 ");
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}
輸出：
fileTime is less than 0 Exception Thrown: System.ArgumentOutOfRangeException
參考：
相關用法
注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 DateTime.FromFileTime() 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。