1. Simone Olianti
  2. SnapObjects
  3. Friday, 20 September 2019 16:01 PM UTC

Hello, i am quite new to web apis but following the "CRUD Operations with .NET DataStore" i was able to publish my first web api, created my own data context and successfully generated my first c# datastore model. Also created the controller to retrieve data and successfully accessed it from a pb application using RESTClient.
How cool is that? :)

Now my question is:
Having a datastore with a retrieval argument (i.e. date type) how do i call the method to retrieve data passing a parameter? What should i put in the URL?

this is what i did in the services interface
using PowerBuilder.Data;
namespace StartWebApi1.Services
    public interface IDayFatService
        IDataStore RetrieveByDate(string dataoggi);

and the service like this:

        public IDataStore RetrieveByDate(string dataoggi)
            var dss_DayFat = new DataStore("dss_dayfat", _context);
            return dss_DayFat;

in the controller:

        public ActionResult RetrieveByDate(string dataoggi)
            IDataStore dss_DayFat = new DataStore("dss_dayfat");
                dss_DayFat = _dayfatservice.RetrieveByDate(dataoggi);
            catch (Exception ex)
                return StatusCode(StatusCodes.Status500InternalServerError, ex.Message);
            if (dss_DayFat.RowCount <= 0)
                return NotFound("No rows retrieved.");
                return Ok(dss_DayFat);

first of all i am not sure if i have to use a "string" type to define the parameter, but how do i build the url to call the api from pb?

inv_RestClient.sendgetrequest("http://xxx.xxx.xxx.xxx:82/api/dayfat/retrievebydate???????", ls_response)

any help would be appreciated




Accepted Answer
Govinda Lopez Accepted Answer Pending Moderation
  1. Friday, 20 September 2019 18:45 PM UTC
  2. SnapObjects
  3. # Permalink

Hi Simone,


You can do that by adding the argument to your URL. Something like this: https://xxx.xxx.xxx.xxx:82/api/dayfat/retrievebydate?dataoggi=‘18/10/1983’


You can also accept a datetime variable. And, you can also add the variables as part of your URL. In example: https://xxx.xxx.xxx.xxx:82/api/dayfat/retrievebyid/101


In order to do that, you need to decorate your controller method. You do that by adding a token into the decorated HttpGet Attribute like so: [HttpGet(“{Id}”)]


I hope this helps!



  1. Simone Olianti
  2. Friday, 20 September 2019 23:15 PM UTC
Thank you Govinda! will try it asap
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