How to get GET parameters with ASP.NET MVC ApiController

Question

I feel a bit absurd asking this but I can\'t find a way to get parameters for a get request at /api/foo?sort=name for instance.

In the ApiControll

Answer 1

You could just use

HttpContext.Current.Request.QueryString

Answer 2

Adding a default value does the job:

public string Get(string sort="")

Answer 3

You can also use the following

var value = request.GetQueryNameValuePairs().Where(m => m.Key == "paramName").SingleOrDefault().Value;

Answer 4

Here's an example that gets the querystring q from the request and uses it to query accounts:

        var q = Request.GetQueryNameValuePairs().Where(nv => nv.Key =="q").Select(nv => nv.Value).FirstOrDefault();
        if (q != null && q != string.Empty)
        {
            var result = accounts.Where(a=>a.Name.ToLower().StartsWith(q.ToLower()));
            return result;
        }
        else
        {
            throw new Exception("Please specify a search query");
        }

This can be called then like this:

url/api/Accounts?q=p

Answer 5

Get all querystring name/value pairs into a variable:

IEnumerable<KeyValuePair<string, string>> queryString = request.GetQueryNameValuePairs();

Then extract a specified querystring parameter

string value = queryString.Where(nv => nv.Key == "parameterNameGoesHere").Select(nv => nv.Value).FirstOrDefault();

Answer 6

if we have a proper model for that request

for example

  public class JustModel 
    {
      public int Id {get;set;}
      public int Age {gets;set;}
    }

and query like this

/api/foo?id=1&Age=10

You could just use [FromUri] attribute

For example

public IHttpActionResult GetAge([FromUri] JustModel model){}