C# How to implement an async method for real-time stock data retrieval...

[jv1597]

I'm trying to get a real-time stock data retrieval method working, but I haven't found any information on how to get the method to work with C#. Here's what I have so far:

In MainWindow.xaml:

<Grid x:Name="g" Width="Auto" Height="Auto" VerticalAlignment="Center">

    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>
    </Grid.RowDefinitions>
    
    <StackPanel Width="Auto" Height="Auto" Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <TextBox x:Name="txtbox" Header="Please enter symbol to lookup:" PlaceholderText=" Type symbol here... " InputScope="Text" TextChanged="{x:Bind textChanged}" />
    </StackPanel>

    <Button x:Name="b" Grid.Row="1" Content="Submit" Click="symbolSearch" HorizontalAlignment="Center" VerticalAlignment="Center"></Button>

    <StackPanel Width="Auto" Height="Auto" Grid.Row="2" Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Frame x:Name="f" Content="{x:Bind Address}" />
    </StackPanel>

</Grid>

In MainWindow.xaml.cs:

using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Controls.Primitives;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Navigation;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Runtime.InteropServices.WindowsRuntime;
using System.Threading.Tasks;
using System.Xml.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.ComponentModel;
using System.Runtime.CompilerServices;



namespace Realtime_Stock_Data_Lab
{
    public sealed partial class MainWindow : Window
    {
        public event PropertyChangedEventHandler PropertyChanged;
        
        private string _symbol;
        private string _address;

        public MainWindow()
        {
            this.InitializeComponent();
        }

        public void textChanged(object sender, TextChangedEventArgs e)
        {
            TextBox t = sender as TextBox;
            _symbol = t.Text;
            NotifyPropertyChanged(nameof(_symbol));
        }

        public void symbolSearch(object sender, RoutedEventArgs e)
        {
            f.Content = _symbol;
        }

        public async Task<int> getStockData(string sender, RoutedEventArgs e)
        {
            try
            {
                var httpClient = new HttpClient();
                httpClient.BaseAddress = new Uri("https://yfapi.net/");
                httpClient.DefaultRequestHeaders.Add("X-API-KEY", "<your API key>");
                httpClient.DefaultRequestHeaders.Add("accept", "application/json");

                var response = await httpClient.GetAsync("v11/finance/quoteSummary/" + _symbol + "?lang=en&region=US&modules=defaultKeyStatistics%2CassetProfile");
                var responseBody = await response.Content.ReadAsStringAsync();

                var data = (JObject)JsonConvert.DeserializeObject(responseBody);
                var address = data.SelectToken("quoteSummary.result[0].assetProfile.address1").Value<string>();
            }
            catch
            {
                Console.WriteLine("Failed to get symbol: " + _symbol);
            }

            return 1;
        }

        public string Address
        {
            get { return _address; }
            set
            {
                if (_address == value) return;
                _address = value;
                NotifyPropertyChanged(nameof(_address));
            }
        }

        private void NotifyPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }

}

I would like to know how to use the "getStockData" async method from xaml. As you can see at this time I have the content property of the frame element binding to "Address" as its binding source, but I need a way to call the async method to bring up the real-time data. Does anyone have any ideas?