Export (0) Print
Expand All

FileSystemInfo.CreationTime Property

Updated: January 2010

Gets or sets the creation time of the current directory or file.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public DateTime CreationTime { get; set; }

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.

Note   This method may return an inaccurate value, because it uses native functions whose values may not be continuously updated by the operating system.

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 null 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.

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) == 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

Date

History

Reason

January 2010

Updated remarks.

Customer feedback.

Community Additions

ADD
Show:
© 2014 Microsoft