# C# Zoom API calls

**URL:** <https://devforum.zoom.us/t/c-zoom-api-calls/4758>\
**Category:** API and Webhooks\
**Created:** [June 25, 2019, 2:40pm UTC](https://devforum.zoom.us/t/c-zoom-api-calls/4758 "2019-06-25T14:40:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![james.geng](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@james.geng](https://devforum.zoom.us/u/james.geng)\
**Post date:** [June 25, 2019, 2:40pm UTC](https://devforum.zoom.us/t/c-zoom-api-calls/4758/1 "2019-06-25T14:40:24Z")

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New to Zoom, looking for sample code or directions to call out functionality via REST API C#

was able to use Postman and do basic stuff like List users or get user through JWT, but not with OAUTH

trying to do same with C#. I don’t see any support documentation on this.  
am i missing anything?  
thanks

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**Author:** ![ojus.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ojus.zoom/32/734_2.png) [@ojus.zoom](https://devforum.zoom.us/u/ojus.zoom)\
**Post date:** [June 26, 2019, 12:59am UTC](https://devforum.zoom.us/t/c-zoom-api-calls/4758/3 "2019-06-26T00:59:20Z")

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Hi @james.geng,

Welcome to our Zoom Community.

To resolve your error, please make sure that you have `content-type = application/json`, in your request.

We also have a [C# wrapper](https://marketplace.zoom.us/docs/sdk/native-sdks/windows/c-sharp-wrapper) that you can use in your implementation.

Thanks,  
Ojus

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**Author:** ![ojus.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ojus.zoom/32/734_2.png) [@ojus.zoom](https://devforum.zoom.us/u/ojus.zoom)\
**Post date:** [June 28, 2019, 12:49am UTC](https://devforum.zoom.us/t/c-zoom-api-calls/4758/5 "2019-06-28T00:49:51Z")

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Hi James,

You can consider implementing OAuth. Here are the guidelines: [https://marketplace.zoom.us/docs/guides/authorization/oauth/oauth-with-zoom](https://marketplace.zoom.us/docs/guides/authorization/oauth/oauth-with-zoom)

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**Author:** ![ojus.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ojus.zoom/32/734_2.png) [@ojus.zoom](https://devforum.zoom.us/u/ojus.zoom)\
**Post date:** [July 3, 2019, 8:40pm UTC](https://devforum.zoom.us/t/c-zoom-api-calls/4758/7 "2019-07-03T20:40:46Z")

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@james.geng Responded to your request here: [C# API Auth token issues](https://devforum.zoom.us/t/c-api-auth-token-issues/4865/2)