WPF

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <UseWpf>true</UseWpf>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="cTrader.Automate" Version="1.*" />
  </ItemGroup>
</Project>

<Window x:Class="WPF_Test.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WPF_Test"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" Background="SlateGray">
    <Grid />
</Window>

using cAlgo.API;
using System.Threading;
using WPF_Test;

namespace WPFTest
{
    [Indicator(IsOverlay = true, AccessRights = AccessRights.FullAccess)]
    public class WPFTest : Indicator
    {
        protected override void Initialize()
        {
            var thread = new Thread(() =>
            {
                var window = new MainWindow();

                _ = window.ShowDialog();
            });

            thread.SetApartmentState(ApartmentState.STA);

            thread.Start();
        }

        public override void Calculate(int index)
        {
        }
    }
}

<Window x:Class="WPF_Trading_Panel.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WPF_Trading_Panel"
        mc:Ignorable="d"
        Title="WPF Trading Panel" Height="200" Width="500" Background="SlateGray" WindowStartupLocation="CenterScreen" ResizeMode="NoResize" Closed="Window_Closed" Loaded="Window_Loaded" DataContext="{Binding RelativeSource={RelativeSource Self}}">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>

        <TextBlock Grid.Column="0" Grid.Row="0" Text="Symbol" Margin="5" />
        <ComboBox Grid.Column="1" Grid.Row="0" ItemsSource="{Binding Symbols, UpdateSourceTrigger=PropertyChanged}" SelectedValue="{Binding SelectedSymbol, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Margin="5" />

        <TextBlock Grid.Column="0" Grid.Row="1" Text="Direction" Margin="5" />
        <ComboBox Grid.Column="1" Grid.Row="1" ItemsSource="{Binding Directions, UpdateSourceTrigger=PropertyChanged}" SelectedValue="{Binding SelectedDirection, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Margin="5" />

        <TextBlock Grid.Column="0" Grid.Row="2" Text="Volume" Margin="5" />
        <TextBox Grid.Column="1" Grid.Row="2" Text="{Binding Volume, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Margin="5" />

        <StackPanel Orientation="Vertical" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="3" VerticalAlignment="Bottom">
            <Button x:Name="ExecuteButton" Content="Execute" Click="ExecuteButton_Click" Margin="5" />
            <Button x:Name="CloseAllButton" Content="Close All Symbol Positions" Click="CloseAllButton_Click"  Margin="5" />
        </StackPanel>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Windows;
using System.Collections.ObjectModel;
using cAlgo.API;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Linq;

namespace WPF_Trading_Panel
{
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private readonly Robot _robot;
        private string _volume, _selectedSymbol, _selectedDirection;

        public MainWindow(Robot robot)
        {
            _robot = robot;

            InitializeComponent();
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public ObservableCollection<string> Symbols { get; } = new ObservableCollection<string>();

        public ObservableCollection<string> Directions { get; } = new ObservableCollection<string>(new string[] { "Buy", "Sell" });

        public string SelectedSymbol
        {
            get => _selectedSymbol;
            set
            {
                if (SetValue(ref _selectedSymbol, value))
                {
                    ChangeVolume();
                }
            }
        }

        public string SelectedDirection
        {
            get => _selectedDirection;
            set => SetValue(ref _selectedDirection, value);
        }

        public string Volume
        {
            get => _volume;
            set => SetValue(ref _volume, value);
        }

        private void ExecuteButton_Click(object sender, RoutedEventArgs e)
        {
            _robot.BeginInvokeOnMainThread(() =>
            {
                var direction = "Buy".Equals(SelectedDirection, StringComparison.Ordinal) ? TradeType.Buy : TradeType.Sell;

                var volume = double.Parse(Volume);

                _ = _robot.ExecuteMarketOrder(direction, SelectedSymbol, volume);
            });
        }

        private void Window_Closed(object sender, EventArgs _) => _robot.BeginInvokeOnMainThread(_robot.Stop);

        private bool SetValue<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
        {
            if (Equals(storage, value))
            {
                return false;
            }

            storage = value;

            OnPropertyChanged(propertyName);

            return true;
        }

        private void Window_Loaded(object sender, RoutedEventArgs _)
        {
            PopulateSymbols();

            SelectedDirection = Directions[0];
        }

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

        private void CloseAllButton_Click(object sender, RoutedEventArgs e)
        {
            _robot.BeginInvokeOnMainThread(() =>
            {
                foreach (var position in _robot.Positions)
                {
                    if (position.SymbolName.Equals(SelectedSymbol, StringComparison.Ordinal) is false) continue;

                    _ = _robot.ClosePositionAsync(position);
                }
            });
        }

        private void PopulateSymbols()
        {
            _robot.BeginInvokeOnMainThread(() =>
            {
                var symbolsList = new List<string>();

                symbolsList.AddRange(_robot.Symbols);

                _ = Dispatcher.BeginInvoke(() =>
                {
                    foreach (var symbol in symbolsList)
                    {
                        Symbols.Add(symbol);
                    }

                    SelectedSymbol = Symbols.FirstOrDefault();
                });
            });
        }

        private void ChangeVolume()
        {
            if (string.IsNullOrWhiteSpace(SelectedSymbol)) return;

            _robot.BeginInvokeOnMainThread(() =>
            {
                var minVolume = _robot.Symbols.GetSymbol(SelectedSymbol).VolumeInUnitsMin;

                _ = Dispatcher.BeginInvoke(() => Volume = minVolume.ToString());
            });
        }
    }
}

using cAlgo.API;
using System.Threading;
using WPF_Trading_Panel;

namespace WPFTradingPanel
{
    [Robot(AccessRights = AccessRights.FullAccess)]
    public class WPFTradingPanel : Robot
    {
        protected override void OnStart()
        {
            var thread = new Thread(() =>
            {
                var window = new MainWindow(this);

                _ = window.ShowDialog();
            });

            thread.SetApartmentState(ApartmentState.STA);

            thread.Start();
        }
    }
}