Building .NET clients for a GraphQL service

Now that we have explored some queries with the Banana Cake Pop tool, let’s see how a client could call the GraphQL service. Although the Banana Cake Pop tool is convenient, it runs in the same domain as the service, so some issues might not become apparent until we create a separate client.

Choosing GraphQL request formats

Most GraphQL services process GET and POST requests in either the application/graphql or application/json media formats. An application/graphql request would only contain a query document. The benefit of using application/json is that as well as the query document, you can specify operations when you have more than one, and define and set variables, as shown in the following code:

{
  "query": "...",
  "operationName": "...",
  "variables": { "variable1": "value1", ... }
}

We will use the application/json media format so that...