Directory.SetCreationTime(String, DateTime) Directory.SetCreationTime(String, DateTime) Directory.SetCreationTime(String, DateTime) Directory.SetCreationTime(String, DateTime) Method

Definition

Legt das Erstellungsdatum und den Erstellungszeitpunkt für die angegebene Datei bzw. das angegebene Verzeichnis fest.Sets the creation date and time for the specified file or directory.

public:
 static void SetCreationTime(System::String ^ path, DateTime creationTime);
public static void SetCreationTime (string path, DateTime creationTime);
static member SetCreationTime : string * DateTime -> unit
Public Shared Sub SetCreationTime (path As String, creationTime As DateTime)

Parameter

path
String String String String

Die Datei oder das Verzeichnis, für das die Informationen über Erstellungsdatum und -zeitpunkt festgelegt werden sollen.The file or directory for which to set the creation date and time information.

creationTime
DateTime DateTime DateTime DateTime

Datum und Zeitpunkt des letzten Schreibvorgangs in einer Datei oder einem Verzeichnis.The date and time the file or directory was last written to. Dieser Wert wird in Ortszeit angegeben.This value is expressed in local time.

Ausnahmen

Der angegebene Pfad wurde nicht gefunden.The specified path was not found.

path ist eine leere Zeichenfolge, enthält nur Leerzeichen oder enthält mindestens ein ungültiges Zeichen.path is a zero-length string, contains only white space, or contains one or more invalid characters. Sie können Abfragen für ungültige Zeichen mithilfe der GetInvalidPathChars()-Methode ausführen.You can query for invalid characters with the GetInvalidPathChars() method.

Der angegebene Pfad und/oder Dateiname überschreiten die vom System definierte maximale Länge.The specified path, file name, or both exceed the system-defined maximum length.

Der Aufrufer verfügt nicht über die erforderliche Berechtigung.The caller does not have the required permission.

creationTime gibt einen Wert außerhalb des Datums- oder Uhrzeitbereichs an, der für diesen Vorgang zulässig ist.creationTime specifies a value outside the range of dates or times permitted for this operation.

Das aktuelle Betriebssystem ist nicht Windows NT oder höher.The current operating system is not Windows NT or later.

Beispiele

Im folgenden Beispiel werden die Unterschiede in der Ausgabe veranschaulicht, wenn eine koordinierte Weltzeit (UTC)-Ausgabe verwendet wird.The following example illustrates the differences in output when using Coordinated Universal Time (UTC) output.

// This sample shows the differences between dates from methods that use
//coordinated universal time (UTC) format and those that do not.
using namespace System;
using namespace System::IO;
int main()
{
   
   // Set the directory.
   String^ n = "C:\\test\\newdir";
   
   //Create two variables to use to set the time.
   DateTime dtime1 = DateTime(2002,1,3);
   DateTime dtime2 = DateTime(1999,1,1);
   
   //Create the directory.
   try
   {
      Directory::CreateDirectory( n );
   }
   catch ( IOException^ e ) 
   {
      Console::WriteLine( e );
   }

   
   //Set the creation and last access times to a variable DateTime value.
   Directory::SetCreationTime( n, dtime1 );
   Directory::SetLastAccessTimeUtc( n, dtime1 );
   
   // Print to console the results.
   Console::WriteLine( "Creation Date: {0}", Directory::GetCreationTime( n ) );
   Console::WriteLine( "UTC creation Date: {0}", Directory::GetCreationTimeUtc( n ) );
   Console::WriteLine( "Last write time: {0}", Directory::GetLastWriteTime( n ) );
   Console::WriteLine( "UTC last write time: {0}", Directory::GetLastWriteTimeUtc( n ) );
   Console::WriteLine( "Last access time: {0}", Directory::GetLastAccessTime( n ) );
   Console::WriteLine( "UTC last access time: {0}", Directory::GetLastAccessTimeUtc( n ) );
   
   //Set the last write time to a different value.
   Directory::SetLastWriteTimeUtc( n, dtime2 );
   Console::WriteLine( "Changed last write time: {0}", Directory::GetLastWriteTimeUtc( n ) );
}

// Obviously, since this sample deals with dates and times, the output will vary
// depending on when you run the executable. Here is one example of the output:
//Creation Date: 1/3/2002 12:00:00 AM
//UTC creation Date: 1/3/2002 8:00:00 AM
//Last write time: 12/31/1998 4:00:00 PM
//UTC last write time: 1/1/1999 12:00:00 AM
//Last access time: 1/2/2002 4:00:00 PM
//UTC last access time: 1/3/2002 12:00:00 AM
//Changed last write time: 1/1/1999 12:00:00 AM
// This sample shows the differences between dates from methods that use
//coordinated universal time (UTC) format and those that do not.
using System;
using System.IO;

namespace IOSamples
{
  public class DirectoryUTCTime
  {
    public static void Main()
    {
    // Set the directory.
      string n = @"C:\test\newdir";
        //Create two variables to use to set the time.
      DateTime dtime1 = new DateTime(2002, 1, 3);
      DateTime dtime2 = new DateTime(1999, 1, 1);

    //Create the directory.
      try
      {
          Directory.CreateDirectory(n);
      }
      catch (IOException e)
      {
          Console.WriteLine(e);
      }

    //Set the creation and last access times to a variable DateTime value.
      Directory.SetCreationTime(n, dtime1);
      Directory.SetLastAccessTimeUtc(n, dtime1);

        // Print to console the results.
      Console.WriteLine("Creation Date: {0}", Directory.GetCreationTime(n));
      Console.WriteLine("UTC creation Date: {0}", Directory.GetCreationTimeUtc(n));
      Console.WriteLine("Last write time: {0}", Directory.GetLastWriteTime(n));
      Console.WriteLine("UTC last write time: {0}", Directory.GetLastWriteTimeUtc(n));
      Console.WriteLine("Last access time: {0}", Directory.GetLastAccessTime(n));
      Console.WriteLine("UTC last access time: {0}", Directory.GetLastAccessTimeUtc(n));

        //Set the last write time to a different value.
      Directory.SetLastWriteTimeUtc(n, dtime2);
      Console.WriteLine("Changed last write time: {0}", Directory.GetLastWriteTimeUtc(n));
    }
  }
}
// Obviously, since this sample deals with dates and times, the output will vary
// depending on when you run the executable. Here is one example of the output:
//Creation Date: 1/3/2002 12:00:00 AM
//UTC creation Date: 1/3/2002 8:00:00 AM
//Last write time: 12/31/1998 4:00:00 PM
//UTC last write time: 1/1/1999 12:00:00 AM
//Last access time: 1/2/2002 4:00:00 PM
//UTC last access time: 1/3/2002 12:00:00 AM
//Changed last write time: 1/1/1999 12:00:00 AM

' This sample shows the differences between dates from methods that use
'coordinated universal time (UTC) format and those that do not.
Imports System.IO



Public Class DirectoryUTCTime
   
   Public Shared Sub Main()
      ' Set the directory.
      Dim n As String = "C:\test\newdir"
      'Create two variables to use to set the time.
      Dim dtime1 As New DateTime(2002, 1, 3)
      Dim dtime2 As New DateTime(1999, 1, 1)
      
      'Create the directory.
      Try
         Directory.CreateDirectory(n)
      Catch e As IOException
         Console.WriteLine(e)
      End Try
      
      'Set the creation and last access times to a variable DateTime value.
      Directory.SetCreationTime(n, dtime1)
      Directory.SetLastAccessTimeUtc(n, dtime1)
      
      ' Print to console the results.
      Console.WriteLine("Creation Date: {0}", Directory.GetCreationTime(n))
      Console.WriteLine("UTC creation Date: {0}", Directory.GetCreationTimeUtc(n))
      Console.WriteLine("Last write time: {0}", Directory.GetLastWriteTime(n))
      Console.WriteLine("UTC last write time: {0}", Directory.GetLastWriteTimeUtc(n))
      Console.WriteLine("Last access time: {0}", Directory.GetLastAccessTime(n))
      Console.WriteLine("UTC last access time: {0}", Directory.GetLastAccessTimeUtc(n))
      
      'Set the last write time to a different value.
      Directory.SetLastWriteTimeUtc(n, dtime2)
      Console.WriteLine("Changed last write time: {0}", Directory.GetLastWriteTimeUtc(n))
   End Sub
End Class

' Since this sample deals with dates and times, the output will vary
' depending on when you run the executable. Here is one example of the output:

' Creation Date: 1/3/2002 12:00:00 AM
' UTC creation Date: 1/3/2002 8:00:00 AM
' Last write time: 12/31/1998 4:00:00 PM
' UTC last write time: 1/1/1999 12:00:00 AM
' Last access time: 1/2/2002 4:00:00 PM
' UTC last access time: 1/3/2002 12:00:00 AM
' Changed last write time: 1/1/1999 12:00:00 AM

Hinweise

Der path -Parameter darf relative oder absolute Pfadinformationen angeben.The path parameter is permitted to specify relative or absolute path information. Relative Pfadinformationen werden als relativ zum aktuellen Arbeitsverzeichnis interpretiert.Relative path information is interpreted as relative to the current working directory. Informationen zum Abrufen des aktuellen Arbeitsverzeichnisses finden GetCurrentDirectorySie unter.To obtain the current working directory, see GetCurrentDirectory.

Der path -Parameter berücksichtigt nicht die Groß-/Kleinschreibung.The path parameter is not case-sensitive.

Sicherheit

FileIOPermission
zum Schreiben in die angegebene Datei bzw. das angegebene Verzeichnis.for writing to the specified file or directory. Zugehörige Enumeration:WriteAssociated enumeration: Write

Gilt für:

Siehe auch