c# component check changes on a file

Hello

I am trying a C# component to be triggered by changes on a file stored in my computer.

The class FileSystemWatcher can check that and trigger a desired behavior on a function, but how can I make the FileSystemWatcher to continue tracking the desired file once the component has runned??

The FileSystemWatcher has to be a member of the component or can be declared on the code part of the component??

Thank you very much.

I am a bit confused with the topic, sorry if the question is not precise at all.

Replies to This Discussion

Permalink Reply by Andrew Heumann on September 22, 2015 at 9:08am

There is a nice class that David already added to the Grasshopper SDK called "GH_FileWatcher." Essentially, you can set up a new file watcher and attach it directly to a delegate method you want to call whenever the file changes. See the attached definition + C# script for an example. If you're writing a custom C# component (as opposed to a script object) you may need to adapt the behavior a little.. but most of the code should be valid.

Attachments:

FileWatcher.gh, 38 KB

Permalink Reply by Manuel Sotomayor Millan on September 22, 2015 at 9:12am

Thank you very much Andrew

Looks very straightforward.

Permalink Reply by David Stasiuk on September 22, 2015 at 11:17am

Ooh, this is super useful for me too. Thanks Andrew!

Permalink Reply by Manuel Sotomayor Millan on September 23, 2015 at 12:58am

glad it helped somebody else as well

Permalink Reply by Gilly Yildirim on June 17, 2019 at 11:43am

Hi Andrew,

Quick question regarding this code. Once 'something happened', how can we track the changed file log? Is there a way to read excel from the change log?

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