Add project files.

Activity/formAddActivity.xaml.cs

@@ -0,0 +1,93 @@
+using System.Windows;
+using System.Windows.Controls;
+using Npgsql;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace SportsTrainingApp.Activity
+{
+    /// <summary>
+    /// Interaction logic for formAddActivity.xaml
+    /// </summary>
+    public partial class formAddActivity : Window
+    {
+        int user_id = -1;
+        public formAddActivity(int _user_id)
+        {
+            InitializeComponent();
+            user_id = _user_id;
+            FillCbSports(cbSports);
+            dtPicker.SelectedDate = DateTime.Now;
+        }
+
+        public class SportType
+        {
+            public int id { get; set; }
+            public string name { get; set; }
+        }
+
+        public void FillCbSports(ComboBox cb)
+        {
+            var items = GetData();
+            cbSports.ItemsSource = items;
+            cbSports.DisplayMemberPath = "name";
+            cbSports.SelectedValuePath = "id";
+            cbSports.SelectedIndex = 0;
+        }
+
+        private List<SportType> GetData()
+        {
+            var items = new List<SportType>();
+            string query = "SELECT id, name FROM dbo.sports";
+
+            using (var connection = new NpgsqlConnection(formMain.connectionString))
+            {
+                connection.Open();
+                using (var command = new NpgsqlCommand(query, connection))
+                using (var reader = command.ExecuteReader())
+                {
+                    while (reader.Read())
+                    {
+                        items.Add(new SportType
+                        {
+                            id = reader.GetInt32(0), 
+                            name = reader.GetString(1)
+                        });
+                    }
+                }
+            }
+            return items;
+        }
+
+        private void Button_Click_2(object sender, RoutedEventArgs e)
+        {
+            this.Close();
+        }
+
+        private void Button_Click_1(object sender, RoutedEventArgs e)
+        {
+            AddActivity();
+        }
+
+        private void AddActivity()
+        {
+            using (var conn = new NpgsqlConnection(formMain.connectionString))
+            {
+                conn.Open();
+
+                using (var cmd = new NpgsqlCommand("INSERT INTO dbo.workouts(user_id, sport_id, date, duration, intensity, notes) " +
+                    "VALUES(@user_id, @sport_id, @date, @duration, @intensity, @note); ", conn))
+                {
+                    cmd.Parameters.AddWithValue("user_id", user_id);
+                    cmd.Parameters.AddWithValue("date", dtPicker.SelectedDate.Value);
+                    cmd.Parameters.AddWithValue("sport_id", cbSports.SelectedValue);
+                    cmd.Parameters.AddWithValue("duration", Convert.ToInt32(tbDuration.Text));
+                    cmd.Parameters.AddWithValue("intensity", tbIntensivity.Text);
+                    cmd.Parameters.AddWithValue("note", tbNote.Text);
+                    cmd.ExecuteNonQuery();
+                }
+                this.Close();
+            }
+        }
+    }
+}
+