How to Upload file to DropBox in MVC or ASP.net with c#

Question

I am new in Dotnet. I need to upload file to Dropbox. I refer some videos But i cant able to do. I have install assembly

using Nemiro.OAuth;

using Nemiro.OAuth.LoginForms;

This is my Code

foreach (HttpPostedFileBase fileUpload in ATTFile)

{

if (fileUpload != null)

{

string folderPath = Server.MapPath('~/UpLoadedFiles/');

fileUpload.SaveAs(folderPath);

}

}

Please Help For this As soon as Possible.. Thank you