Asp.net Web Forms obtain access token in ReturnURI page

[sanjayssk]

I'm trying to use Dropbox .Net from an asp.net Web Forms application. I'm successfully able to get control in my ReturnURI web page. But I can't find any sample code on how to proceed further to obtain the AccessToken in Page_Load of that page. Please help or at least give a pointer to the sample code. The examples are not for Web Forms.

Thanks.

[Greg-DB · Accepted solution]

You can see how the authorization code is exchanged for an access token in the .NET SDK SimpleBlogDemo example here:

https://github.com/dropbox/dropbox-sdk-dotnet/blob/master/dropbox-sdk-dotnet/Examples/SimpleBlogDemo...

The 'code' and 'state' are returned by URL parameters, and after the 'state' is validated, you can use 'ProcessCodeFlowAsync' to exchange the 'code' for an access token.

[sanjayssk]

Hi Greg,

Thanks for the hint. However, that code was still MVC and I have never done any async stuff in Web Forms. So I had to do some research. Finally, I was able to get the access token. Now I can try the API in Web Forms.

Many thanks,

Sanjay

[olavolsf]

Dear Sanjay,

Would you be so kind to send me the webform code to access "access tokens"? I am also a webforms programmer and I am having problem translating the dropbox example from MVC.

Many thanks in advance.

[sanjayssk]

It was so long back that I have lost all those sources. However, I remember doing something with DotNetOpenAuth, DropNet and NewtonSoft.json.

I just now searched and found some things that might help:

https://github.com/DropNet/DropNet

https://stackoverflow.com/questions/38432377/asp-net-file-upload-to-dropbox-via-api

[olavolsf]

Thank you very much, sanjayssk.

I will access the links you recomended and try to get something from there.

Best regards.