CreationTime Property

FileSystemInfo.CreationTime Property


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

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.

Exception Condition

Refresh cannot initialize the data.


The specified path is invalid; for example, it is on an unmapped drive.


The current operating system is not Windows NT or later.


The caller attempts to set an invalid creation time.

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

The value of the CreationTime property is pre-cached if the current instance of the FileSystemInfo object was returned from any of the following DirectoryInfo methods:

To get the latest value, call the Refresh method.

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.


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

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);


for setting the creation time. Associated enumeration: FileIOPermissionAccess.Write

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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