DateTime.ToFileTime Method
Assembly: mscorlib (in mscorlib.dll)
A Windows file time is a 64-bit value that represents the number of 100-nanosecond intervals that have elapsed since 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC). Windows uses a file time to record when an application creates, accesses, or writes to a file.
Previous versions of the ToFileTime method assume the current DateTime object is a local time. Starting with the.NET Framework version 2.0, the ToFileTime method uses the Kind property to determine whether the current DateTime object is a local time, a UTC time, or an unspecified kind of time which is treated as a local time.
The following code example demonstrates the ToFileTime method.
int main() { System::Console::WriteLine( "Enter the file path:" ); String^ filePath = System::Console::ReadLine(); if ( System::IO::File::Exists( filePath ) ) { System::DateTime fileCreationDateTime = System::IO::File::GetCreationTime( filePath ); __int64 fileCreationFileTime = fileCreationDateTime.ToFileTime(); System::Console::WriteLine( "{0} in file time is {1}.", fileCreationDateTime, fileCreationFileTime ); } else { System::Console::WriteLine( "{0} is an invalid file", filePath ); } }
public static void main(String[] args)
{
System.Console.WriteLine("Enter the file path:");
String filePath = System.Console.ReadLine();
if (System.IO.File.Exists(filePath)) {
System.DateTime fileCreationDateTime = System.IO.File.
GetCreationTime(filePath);
long fileCreationFileTime = fileCreationDateTime.ToFileTime();
System.Console.WriteLine("{0} in file time is {1}.",
fileCreationDateTime, (Int64)fileCreationFileTime);
}
else {
System.Console.WriteLine("{0} is an invalid file", filePath);
}
} //main
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.