Bing Webapi fails in Blazor Incorrect String Format Exception

The below code works in Web but not in Blazor please suggest. I could see errors in console.

Here is correct website that works

https://locationsearch.azurewebsites.net/Calc

Note :please get free Bing Maps key from MS Website

 
@page "/"
@using Newtonsoft.Json;
@using Microsoft.AspNetCore.Components.Forms
@using System.Text;
@using System.Net.Http.Headers;
<h1>Counter</h1>
<EditForm Model="@submitActivity" OnSubmit="@Submit">
<div class="row">
    <div class="col-md-3">
        <p>Location</p>
    </div>
    <div class="col-md-4">
        <input placeholder="Location" @bind="@loc" />
    </div>
</div>
<br />
<div>
    <button type="submit">Submit</button>
</div>
<div>
    @errmsg
</div>
<br />
    @latitude
<br />
    @longitude
 <br/>
    @elevation
 
    </EditForm>
@code {
    private string loc; string errmsg = ""; string time1 = ""; double latitude = 0.0;
    double longitude = 0.0; double elevation;
    string time2 = "";
    private ACTIVITY submitActivity { get; set; } = new();
    public class ACTIVITY
    {        public string Dummy { get; set; }
        
    }
  private  async Task Submit()
    {
        string key = "My Bing Key";
        string query = loc; 
        using (HttpClient client = new HttpClient())
        {
            string timez = "";
            string final = "";
            string timezone = "";
            string checknull = "";
            string time3 = "";
            string timef = ""; 
            Uri geocodeRequest = new Uri(string.Format("http://dev.virtualearth.net/REST/v1/Locations?q={0}&key={1}", query, key));
            client.BaseAddress = new Uri(geocodeRequest.ToString());
            client.DefaultRequestHeaders.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            HttpResponseMessage response1 = null;
            try
            {
      
                response1 = await client.GetAsync(geocodeRequest);
           string     jsonstring = await response1.Content.ReadAsStringAsync();
            // Parse the JSON response to extract the address
                dynamic data1 = Newtonsoft.Json.JsonConvert.DeserializeObject(jsonstring);
           
                var result1 = data1.resourceSets[0].resources[0];
                latitude = result1.point.coordinates[0];
                longitude = result1.point.coordinates[1];
                Uri elevationReq = new Uri(string.Format("https://api.open-meteo.com/v1/elevation?latitude={latitude}&longitude={longitude}"));
                client.BaseAddress = new Uri(elevationReq.ToString());
                client.DefaultRequestHeaders.Clear();
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                HttpResponseMessage response2 = null;
            
                response2 = await client.GetAsync(elevationReq);
                string jsonstring2 = await response2.Content.ReadAsStringAsync();
                // Parse the JSON response to extract the address
                dynamic datael = Newtonsoft.Json.JsonConvert.DeserializeObject(jsonstring2);
              elevation = datael.elevation[0];
           
            }
            catch (Exception e)
            {
                loc = "";
                timez = "";
                errmsg = "Invalid Location";
            }
          
        }
    }
}