How to get a file creation time with file upload browser

Hi Vikram,

 The issue you are encourting is because when you upload a file using a browser, the file metadata such as creation time and last modification time are not preserved. Browsers do not pass the file's original metadata (like creation or modification time) when the file is uploaded due to security and privacy reasons. As a result, methods like File.GetCreationTime() and File.GetLastWriteTime() will return the system default value (such as 01/01/1601 05:30 AM on Windows systems) for the uploaded file.

Why this happens?

As I already told above why this happens, I'm summerizing it here for you.

1. Browsers do not expose file metadata (like creation and modification time) when uploading files to a web server for security purposes.
2. When you use File.GetCreationTime() on the uploaded file, it refers to the file stored on the server (after upload), which is a new file created by the server and not the original file from the client machine.

Proposed Solutions

1. Store Original Timestamps in Hidden Fields (User Input):
   • You can ask the user to manually input the file creation or modification date in a hidden form field when uploading. Though not ideal, it allows you to store and track this information on the server.
2. No Metadata Solution:
   • Since the browser does not provide file metadata, you'll need to accept that the creation time and modification time are not retrievable from the file itself.
3. Use Server-Side Timestamps:
   • Set the creation and modification times to the upload time on the server. This would reflect when the file was uploaded to the server.

Example:

DateTime uploadTime = DateTime.Now;

// Save the file on the server
string filePath = Path.Combine(dirPath, fileName);
fileUpdBankStatement.PostedFile.SaveAs(filePath);

// Set the file's metadata to the upload time
File.SetCreationTime(filePath, uploadTime);
File.SetLastWriteTime(filePath, uploadTime);

In this case, the file creation and modification times will match the upload time.

This will be help you Vikram, hope this helps you.

Thanks

The issue you are facing is likely due to the way the file path is being handled. When you use File.GetCreationTime(fileUpdBankStatement.PostedFile.FileName), it may not be pointing to the correct file path on the server, especially if the file has not been saved to the server yet.

To correctly retrieve the creation time of an uploaded file, you should first save the file to a temporary location on the server and then access its properties. Here’s an example of how to do this:

// Save the uploaded file to a temporary location
string tempFilePath = Path.Combine(dirPath, fileName);
fileUpdBankStatement.PostedFile.SaveAs(tempFilePath);

// Now retrieve the creation and modification times
DateTime originalCreationDate = File.GetCreationTime(tempFilePath);
DateTime originalModificationDate = File.GetLastWriteTime(tempFilePath);

// Set the original metadata on the uploaded file
File.SetCreationTime(tempFilePath, originalCreationDate);
File.SetLastWriteTime(tempFilePath, originalModificationDate);

By saving the file first, you ensure that you are working with the correct file path, which should resolve the issue of getting an incorrect creation time.