Is there any plugin for crossplatform that i can use as a file Upload control

I am working on Xamarin forms app and i have page for creating tasks for employees and i need to add funtionality to upload image and files via file upload / camera for each task( For example if the task has an accompaning word document /image) . But in Xamrin form i come seem to see any control that acts as a file uploader.. I them need to post those files to the server.