How to download file with read only in ASP .NET website?

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I have a file present on server. The file on server is read-only. When I download the file from ASP .NET application to my local machine, the file has read and write access both. The original read-only attribute removed. I want to download the file read-only mode. Could you please suggest the proper solution for this problem

What I have tried:

I have tried couple of options like using response.transaferfile option.

Response.ContentType = "test/plain";
Response.AppendHeader("Content-Disposition", "attachment; filename=MyFile.txt");
Response.TransmitFile(Server.MapPath("~/Files/MyFile.txt"));
Response.End();

On server, this file has read-only attribute, but if I download using above code, the read-only attribute remove automatically in client location. I want to prevent file read-only after downloading. Please suggest some solution.

Posted 2-Mar-18 3:37am

londhess

Updated 2-Mar-18 10:41am

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Richard Deeming · Answer 1 · 2018-03-02T03:50:00

Solution 1

You can't. The server has no control over where - or even if - the file is saved on the client, nor what attributes or permissions are applied to it.

And you don't need to anyway. If the user edits their copy of the file, it won't have any effect on the server's copy.

Posted 2-Mar-18 3:50am

Richard Deeming

Matthew Dennis · Answer 2 · 2018-03-02T10:41:00

Solution 2

If you don't want the user to make any changes to what information is downloaded, you need to convert it to a format that you can control editing.

You can do this with PDF files, and I think you can do it with Office documents as well.

Posted 2-Mar-18 10:41am

Matthew Dennis