RSCG Example–HttpClientGenerator–part 19

HttpClientGenerator is a tool that uses Roslyn code generator feature to write boilerplate HttpClient code for you.
 

The code that you start with is

    public partial class WeatherService

    {

       [HttpGet(

    WeatherForecast/{id}

    )]

       public partial Task<WeatherForecast> GetWeather(int id);

    

        [HttpGet(

    WeatherForecast

    )]

        public partial Task<WeatherForecast[]> GetAllWeather();  

    }

The code that you will use is

    using (var client = new HttpClient())                              

    {

        client.BaseAddress = new Uri(

    http://localhost:5000

    );

        var userService = new WeatherService(client);

        var w = await userService.GetWeather(1);

        Console.WriteLine($

    {w.Summary}

    );

        var q = await userService.GetAllWeather();

        Console.WriteLine($

    {q[0].Summary}

    );

    }

The code that is generated is

    public partial async System.Threading.Tasks.Task<BL.WeatherForecast> GetWeather(int id)

    {

        const string @___httpMethod = 

    GET

    ;

        

        var @___path = 

    WeatherForecast/{id}

    ;

        var @___routes = new Dictionary<string,object>();

        @___routes[

    id

    ] = id;

        

        var @___queryParams = new Dictionary<string,object>();

        // Query String dictionary goes here...

        

        var @___headers = new Dictionary<string,string>();

        // Header dictionary goes here...

        

        return await HttpClientGenerator.Shared.HttpClientHelper.SendAsync<BL.WeatherForecast>(_httpClient,@___httpMethod,@___path,@___headers,@___routes,@___queryParams);

    }

Example Code: https://github.com/ignatandrei/RSCG_Examples/tree/main/HttpClientCodeGenerator