Hello @Ankur Sharma ,
Welcome to Microsoft Q&A!
To show UWP icon on ShareUI, your app needs to declare that it supports the Share contract. This lets the system know that your app is available to receive content.
- Open the manifest file. It should be called something like package.appxmanifest.
- Open the Declarations tab.
- Choose Share Target from the Available Declarations list, and then select Add.
For details on how to set the share type and get the sharing content, please refer to official document Receive data.
Here is the complete code sample.
Thank you.
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