File.GetCreationTimeUtc Method
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| GetCreationTimeUtc(SafeFileHandle) |
Returns the creation date and time, in Coordinated Universal Time (UTC), of the specified file or directory. |
| GetCreationTimeUtc(String) |
Returns the creation date and time, in Coordinated Universal Time (UTC), of the specified file or directory. |
- Source:
- File.cs
- Source:
- File.cs
- Source:
- File.cs
Returns the creation date and time, in Coordinated Universal Time (UTC), of the specified file or directory.
public:
static DateTime GetCreationTimeUtc(Microsoft::Win32::SafeHandles::SafeFileHandle ^ fileHandle);public static DateTime GetCreationTimeUtc(Microsoft.Win32.SafeHandles.SafeFileHandle fileHandle);static member GetCreationTimeUtc : Microsoft.Win32.SafeHandles.SafeFileHandle -> DateTimePublic Shared Function GetCreationTimeUtc (fileHandle As SafeFileHandle) As DateTimeParameters
- fileHandle
- SafeFileHandle
A SafeFileHandle to the file or directory for which to obtain creation date and time information.
Returns
A DateTime structure set to the creation date and time for the specified file or directory. This value is expressed in UTC time.
Exceptions
fileHandle is null.
The caller does not have the required permission.
Applies to
.NET 10 och andra versioner
| Produkt | Versioner |
|---|---|
| .NET | 7, 8, 9, 10 |
- Source:
- File.cs
- Source:
- File.cs
- Source:
- File.cs
Returns the creation date and time, in Coordinated Universal Time (UTC), of the specified file or directory.
public:
static DateTime GetCreationTimeUtc(System::String ^ path);public static DateTime GetCreationTimeUtc(string path);static member GetCreationTimeUtc : string -> DateTimePublic Shared Function GetCreationTimeUtc (path As String) As DateTimeParameters
- path
- String
The file or directory for which to obtain creation date and time information.
Returns
A DateTime structure set to the creation date and time for the specified file or directory. This value is expressed in UTC time.
Exceptions
The caller does not have the required permission.
.NET Framework and .NET Core versions older than 2.1: path is a zero-length string, contains only white space, or contains one or more invalid characters. You can query for invalid characters by using the GetInvalidPathChars() method.
path is null.
The specified path, file name, or both exceed the system-defined maximum length.
path is in an invalid format.
Examples
The following example demonstrates the GetCreationTimeUtc method.
Imports System.IO
Module Module1
Sub Main()
Dim fileCreatedDate As DateTime = File.GetCreationTimeUtc("C:\Example\MyTest.txt")
Console.WriteLine("file created: " + fileCreatedDate)
End Sub
End Module
Remarks
Anteckning
This method may return an inaccurate value, because it uses native functions whose values may not be continuously updated by the operating system.
If the file described in the path parameter does not exist, this method returns 12:00 midnight, January 1, 1601 A.D. (C.E.) Coordinated Universal Time (UTC).
NTFS-formatted drives may cache information about a file, such as file creation time, for a short period of time. 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.
For a list of common I/O tasks, see Common I/O Tasks.
See also
Applies to
.NET 10 och andra versioner
| Produkt | Versioner |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 1.3, 1.4, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
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