Save from IoT hub to SQL Server database Azure function

savetosql.cs

#r "System.Configuration"
#r "System.Data"
#r "Newtonsoft.Json"

using System;
using System.Configuration;
using System.Data.SqlClient;
using System.Threading.Tasks;
using System.Net;
using Newtonsoft.Json;

public static async Task Run(string myIoTHubMessage, TraceWriter log)
{
log.Info($"Message: {myIoTHubMessage}");
var e = JsonConvert.DeserializeObject<EventData>(myIoTHubMessage);

 var str = ConfigurationManager.ConnectionStrings["SQLServerDB_connection"].ConnectionString;
    using (SqlConnection conn = new SqlConnection(str))
    {
        conn.Open();
        var text = "INSERT INTO [dbo].[SensorData] (DeviceName, SensorValue) Values (@deviceId, @iotdata);";

        using (SqlCommand cmd = new SqlCommand(text, conn))
        {
            cmd.Parameters.AddWithValue("@iotdata", e.iotdata);
            cmd.Parameters.AddWithValue("@deviceId", e.deviceId);
            var result = await cmd.ExecuteNonQueryAsync();
            log.Info($"Inserted: {result.ToString()}");
        }
    }
}

public class EventData
{
    public string deviceId { get; set; }
    public int iotdata { get; set; }
}