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.NET Development
.NET Framework 3.5
System.IO Namespace
 CreationTime Property

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This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
FileSystemInfo..::.CreationTime Property

Gets or sets the creation time of the current FileSystemInfo object.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)
Visual Basic (Declaration)
Public Property CreationTime As DateTime
Visual Basic (Usage)
Dim instance As FileSystemInfo
Dim value As DateTime

value = instance.CreationTime

instance.CreationTime = value
C#
public DateTime CreationTime { get; set; }
Visual C++
public:
property DateTime CreationTime {
    DateTime get ();
    void set (DateTime value);
}
JScript
public function get CreationTime () : DateTime
public function set CreationTime (value : DateTime)

Property Value

Type: System..::.DateTime
The creation date and time of the current FileSystemInfo object.
ExceptionCondition
IOException

Refresh cannot initialize the data.

DirectoryNotFoundException

The specified path is invalid, such as being on an unmapped drive.

PlatformNotSupportedException

The current operating system is not Microsoft Windows NT or later.

When first called, FileSystemInfo calls Refresh and returns the cached information on APIs to get attributes and so on. On subsequent calls, you must call Refresh to get the latest copy of the information.

If the file described in the FileSystemInfo object does not exist, this property will return 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC), adjusted to local time.

NTFS-formatted drives may cache file meta-info, such as file creation time, for a short period of time. This process is known as file tunneling. As a result, it may be necessary to explicitly set the creation time of a file if you are overwriting or replacing an existing file.

This property value is nullNothingnullptra null reference (Nothing in Visual Basic) if the file system containing the FileSystemInfo object does not support this information.

For a list of common I/O tasks, see Common I/O Tasks.

Windows 95, Windows 98, Windows 98 Second Edition Platform Note:

These operating systems do not support this property, and DirectoryInfo implementations of this property are not supported.

Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows CE Platform Note:

This property is read-only.

The following example demonstrates the CreationTime property. This code example is part of a larger example provided for the FileSystemInfo class.

Visual Basic
Sub DisplayFileSystemInfoAttributes(ByVal fsi As IO.FileSystemInfo)
    ' Assume that this entry is a file.
    Dim entryType As String = "File"

    ' Determine if this entry is really a directory.
    If fsi.Attributes = FileAttributes.Directory Then
        entryType = "Directory"
    End If

    ' Show this entry's type, name, and creation date.
    Console.WriteLine("{0} entry {1} was created on {2:D}", _
        entryType, fsi.FullName, fsi.CreationTime)
End Sub

C#
static void DisplayFileSystemInfoAttributes(FileSystemInfo fsi)
{
    //  Assume that this entry is a file.
    string entryType = "File";

    // Determine if entry is really a directory
    if (fsi.Attributes == FileAttributes.Directory)
    {
        entryType = "Directory";
    }
    //  Show this entry's type, name, and creation date.
    Console.WriteLine("{0} entry {1} was created on {2:D}", entryType, fsi.FullName, fsi.CreationTime);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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