Get revision of file from C#

[devLander]

Hello, I need to keep syncronized in the memory of my program the contents of a file inside my dropbox, I was thinking on getting constantly the Revision of that file and if it's different, then, download the content. Ignoring if that's the best way to go. It's a really light file, less than 10KB of text.

So, I was thinking this way, in a timer:

            if (!workingAsync)
            {
                workingAsync = true;
                string newRev = (await dBox.Files.GetMetadataAsync("/File.txt")).AsFile.Rev;
                workingAsync = false;

                if (oldRev != newRev)
                {
                    oldRev = newRev;
                    DownloadUpdatedFile();
                }
            }

But I don't know if there's a better way of performing this check.

Thanks for any advice.

[Greg-DB · Accepted solution]

Checking if the `rev` value has changed is certainly a valid way of determing if your copy of the may be out of date. 

Alternatively, you can make use of the following methods to efficiently keep track of any changes in a particular folder:

• ListFolderAsync
• ListFolderContinueAsync
• ListFolderLongpollAsync

ListFolderAsync and ListFolderContinueAsync can be used to list the contents of a folder, and then ListFolderLongpollAsync can be used to efficiently poll for changes to that folder. Check out the linked documentation for each on information on how to use them.