Retrieves sensor readings from CosmosDB

Azure_Retrieve.cs

using System.Net;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log, IEnumerable<AirData> documents)
{
    List<AirData> docsToReturn = new List<AirData>();

    string numberOfDocs = req.GetQueryNameValuePairs()
        .FirstOrDefault(q => string.Compare(q.Key, "fetchno", true) == 0)
        .Value;
        
    int docsAsInt;

    if(Int32.TryParse(numberOfDocs, out docsAsInt)){
        docsToReturn =  new List<AirData>(documents.OrderByDescending(x => x.RequestDateTime).Take(docsAsInt));
        return await Task.Run(() => req.CreateResponse(HttpStatusCode.OK, docsToReturn));
    }

    docsToReturn =  new List<AirData>(documents.OrderByDescending(x => x.RequestDateTime));
    return await Task.Run(() => req.CreateResponse(HttpStatusCode.OK, docsToReturn));
     
}

public class AirData {

    public string Longitude { get; set; }
    public string Latitude { get; set; }
    public string Ppm { get; set; }
    public DateTime RequestDateTime { get; set; }

}