Javatpoint Logo
Javatpoint Logo

file.setLastAccessTime() Method in C#

In C#, the File.SetLastAccessTime() function is a powerful method for controlling information about files within the developed applications. In this article, we will go over its features, syntax, arguments, exceptions, and suggested procedures and use examples. Ultimately, we will fully grasp how to apply this approach in the C# applications.

file.setLastAccessTime() Method in C#

What is the File.SetLastAccessTime ()?

The main File.SetLastAccessTime() method allows us to programmatically modify a file's last access time. The C# namespace System.IO contains this function, which offers classes and approaches for managing several I/O activities, including file management.


Here is a simple syntax that is used for File.SetLastAccessTime():

public static void SetLastAccessTime (string path, DateTime lastAccessTime);


Path: The file whose last access time we are making changes to is specified by the path parameter, which makes it significant. This file path ought to be legitimate.

lastAccessTime: It shows the file's most recently updated last access time. We may manage the change with exactitude by bypassing it as a DateTime object.

Exclusivity: It's crucial that we handle any faults with grace while working with files. The File.SetLastAccessTime() may raise exceptions in several circumstances, such as:

When the computer's operating system refuses access because there are not enough permissions, this is known as the UnauthorizedAccessException.

Argument Exception: It denotes that the path has become empty or only consists of incorrect characters and spaces.

If the path is empty strings, ArgumentNullException is thrown.

Path Too Long Exception: This error message indicates that something in the filename, path, or both is longer than the maximum length allowed by the computer's operating system.

Directory Not Found Exception: This error message suggests that the address that was supplied is incorrect, maybe referring to a previously erroneous directory.

When a file supplied in the path fails to be discovered, the FileNotFoundException exception is raised.

Not Supported Exception: A message indicating that the route is not formatted correctly. Managing these rare instances guarantees that our program operates consistently and gives users helpful feedback when mistakes happen.

Best methods:

If we intend to use File.SetLastAccessTime() in our applications, take into account these recommended practices:

Error handling: Provide strong error handling to manage the prevention of exceptions with grace. It ensures the long-term viability and usability of the program.

Permissions: Verify that the application we're using is authorized to access and alter the target file. Appropriately handle exceptions to permission.

Validation of Input: Verify user input-particularly file paths-to make sure file operations are operating correctly and to prevent any potential security vulnerabilities.

Example 1: Refresh the time of last access.

Let us take an example to illustrate the use of the works.SetLastAccessTime() method in C#.


Last access time of the file has been updated successfully.


The above output demonstrates that the file "example.txt" has been effectively updated from the mentioned date until January 31, 2024, at 10:00 am and afterwards.

In this case, the "example.txt" file stored in "C": is scheduled to expire at 10:00 a.m. on January 31, 2024. Any anomalies discovered throughout the procedure have been documented and appropriately handled.

Example 2:

Let us take another example to demonstrate the dynamic last-use-time modification using works.SetLastAccessTime() method in C#.


Last access time of the file has been updated successfully. 


In this example, the code indicates that the document that was determined by the last access time, named "sample.docx" was successfully modified seven days ago as per the mentioned date, i.e., on January 31, 2024.

Here's an example of a more dynamic method that programmed calculations using user input to determine the file path and the most recent access time. It promotes fluid and adaptable file-handling processes.


In conclusion, programmers can efficiently manage the last access timings of files with C#'s FileSetLastAccess () function. This technique can be used to incorporate dependable file management into the programs if we are familiar with its syntax, parameters, recommended procedures, and implementation examples.

File.SetLastAccessTime() gives us the resources we need to accomplish our objectives, whether we're changing file information or putting custom file controls for access in place.

Youtube For Videos Join Our Youtube Channel: Join Now


Help Others, Please Share

facebook twitter pinterest

Learn Latest Tutorials


Trending Technologies

B.Tech / MCA