The document discusses building native iOS and Android apps using .NET with Xamarin. It allows sharing app logic and C# code between platforms while maintaining separate user interfaces. GraphQL is presented as a query language for APIs that returns precisely the data required by a client and is self-documenting using GraphiQL for exploration. GraphQL requests are made with a JSON body containing a query field and the response contains the requested data.

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2. Native iOS & Android apps in .NET

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3 Native User Interfaces
Shared App Logic
Windows C#
Shared C# Logic
iOS C# Android C#

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5. A query language for your API

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Query Response

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GraphQL APIs Are Self Documenting
Users can explore GraphQL APIs using GraphiQL

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{ “query” : “[Your GraphQL Query]” }
GraphQL Request Body is JSON
JSON contains one field: query

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