How to Read Dropbox file

Question

I used the Chooser of dropbox (https://www.dropbox.com/developers/dropins/chooser/js) through console app.

I am trying to add this function in application and dropbox login successful and select file return on https://www.dropbox.com/s/lmlooh2ud4gtphw/Krishan%20Kumar%20Singh1.docx?dl=0 this url format, I want to read this file content on binary format or direct upload and upload on our application base on C# , ASP.NET