Passing several query parameters to a GET endpoint in .netcore web api

Question

I have an application where there will be several parameters passed to my endpoint for searching, these parameters are not defined because they are dynamically generated so i cannot map it to a specific model. What would be the best way to map any query parameters into my GET endpoint?

[HttpGet]
public CustomResponse GetResults({something here that will map the parameters?})
{
    //perhaps a dictionary? a collection of some sort? 
}

Then I need to get all those keys and values and search the database for anything containing that and as i said it could be anything.

So I could pass something like?

/api/Merchandise/GetResults?sku=30021&cupsize=medium&color=red&location=south& {and all the dynamic fields which could be anything}

Set · Accepted Answer · 2017-10-01 07:59:05Z

4

HttpRequest object has Query property that is an IQueryCollection and holds all passed query parameters.

In other words, in your action method you may do:

[HttpGet]
public CustomResponse GetResults()
{
    var queryParams = HttpContext.Request.Query;

    // directly get by name
    var value1 = queryParams["parameter_name"];
    // or queryParams.TryGetValue()

    foreach (var parameter in queryParams)
    {
        string name = parameter.Key;
        object value = parameter.Value;
    }
}

answered Oct 1, 2017 at 7:59

Set

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Comments

Nikolaus · Accepted Answer · 2017-09-30 21:19:46Z

0

You could map it to JObject, which is like a Dictionary.

Don't forget:

using Newtonsoft.Json;

answered Sep 30, 2017 at 21:19

Nikolaus

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