ability to add and update customers

C969Project/AddUpdateCustomerForm.Designer.cs

@@ -45,6 +45,8 @@ partial class AddUpdateCustomerForm
         cityTextBox = new System.Windows.Forms.TextBox();
         label7 = new System.Windows.Forms.Label();
         zipTextBox = new System.Windows.Forms.TextBox();
+        label8 = new System.Windows.Forms.Label();
+        textBox1 = new System.Windows.Forms.TextBox();
         SuspendLayout();
         // 
         // label1
@@ -170,12 +172,32 @@ partial class AddUpdateCustomerForm
         zipTextBox.Size = new System.Drawing.Size(218, 23);
         zipTextBox.TabIndex = 12;
         // 
+        // label8
+        // 
+        label8.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)0));
+        label8.Location = new System.Drawing.Point(236, 299);
+        label8.Name = "label8";
+        label8.Size = new System.Drawing.Size(63, 23);
+        label8.TabIndex = 15;
+        label8.Text = "Country";
+        label8.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+        // 
+        // textBox1
+        // 
+        textBox1.Location = new System.Drawing.Point(12, 299);
+        textBox1.Name = "textBox1";
+        textBox1.Size = new System.Drawing.Size(218, 23);
+        textBox1.TabIndex = 14;
+        textBox1.Text = "US";
+        // 
         // AddUpdateCustomerForm
         // 
         AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
         AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
         BackColor = System.Drawing.SystemColors.Control;
         ClientSize = new System.Drawing.Size(800, 450);
+        Controls.Add(label8);
+        Controls.Add(textBox1);
         Controls.Add(label7);
         Controls.Add(zipTextBox);
         Controls.Add(label6);
@@ -196,6 +218,9 @@ partial class AddUpdateCustomerForm
         PerformLayout();
     }
 
+    private System.Windows.Forms.Label label8;
+    private System.Windows.Forms.TextBox textBox1;
+
     private System.Windows.Forms.Label label6;
     private System.Windows.Forms.TextBox cityTextBox;
     private System.Windows.Forms.Label label7;

C969Project/AddUpdateCustomerForm.cs

@@ -1,13 +1,19 @@
+using System;
+using System.Windows.Forms;
 using C969Project.Data;
 using C969Project.Data.Models;
 
-namespace C969Project;
+namespace C969Project
-
+{
     public partial class AddUpdateCustomerForm : Form
     {
+        private Customer? _currentCustomer; 
+
         public AddUpdateCustomerForm()
         {
             InitializeComponent();
+            saveButton.Click += SaveButton_Click;
+            cancelButton.Click += CancelButton_Click;
         }
 
         public void InitAdd()
@@ -20,6 +26,7 @@ public partial class AddUpdateCustomerForm : Form
             cityTextBox.Text = string.Empty;
             zipTextBox.Text = string.Empty;
             phoneTextBox.Text = string.Empty;
+            _currentCustomer = null;
             
             ShowDialog();
         }
@@ -29,16 +36,159 @@ public partial class AddUpdateCustomerForm : Form
             Text = "Update Customer";
             label1.Text = "Update Customer";
 
+            _currentCustomer = customer;
+            
             nameTextBox.Text = customer.CustomerName;
             var addr = DatabaseHelper.RetrieveAddress(customer.AddressId);
+            if (addr != null)
+            {
                 addressTextBox.Text = addr.Address1;
                 var city = DatabaseHelper.RetrieveCity(addr.CityId);
+                if (city != null)
+                {
                     cityTextBox.Text = city.CityName;
+                }
                 zipTextBox.Text = addr.PostalCode;
                 phoneTextBox.Text = addr.Phone;
+            }
             
             ShowDialog();
         }
 
-    // name, {address, phone}
+        private void SaveButton_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrWhiteSpace(nameTextBox.Text) ||
+                string.IsNullOrWhiteSpace(addressTextBox.Text) ||
+                string.IsNullOrWhiteSpace(cityTextBox.Text) ||
+                string.IsNullOrWhiteSpace(zipTextBox.Text) ||
+                string.IsNullOrWhiteSpace(phoneTextBox.Text))
+            {
+                MessageBox.Show("All fields must be filled out.", "Validation Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+
+            if (!System.Text.RegularExpressions.Regex.IsMatch(phoneTextBox.Text.Trim(), @"^[\d-]+$"))
+            {
+                MessageBox.Show("Phone number can only contain digits and dashes.", "Validation Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+
+
+            string currentUser = AppState.CurrentUser.Username; 
+
+            try
+            {
+
+                string countryName = "US";
+                int currentCountryId = DatabaseHelper.GetCountryId(countryName);
+                if (currentCountryId == 0)
+                {
+                    Country newCountry = new Country
+                    {
+                        CountryName = countryName,
+                        CreateDate = DateTime.UtcNow,
+                        CreatedBy = currentUser,
+                        LastUpdate = DateTime.UtcNow,
+                        LastUpdateBy = currentUser
+                    };
+                    currentCountryId = DatabaseHelper.AddCountry(newCountry);
+                }
+
+                int currentCityId = DatabaseHelper.GetCityId(cityTextBox.Text.Trim(), currentCountryId);
+                if (currentCityId == 0)
+                {
+                    City newCity = new City
+                    {
+                        CityName = cityTextBox.Text.Trim(),
+                        CountryID = currentCountryId,
+                        CreateDate = DateTime.UtcNow,
+                        CreatedBy = currentUser,
+                        LastUpdate = DateTime.UtcNow,
+                        LastUpdateBy = currentUser
+                    };
+                    currentCityId = DatabaseHelper.AddCity(newCity);
+                }
+                
+                Address addressToSave;
+                int finalAddressId;
+
+                if (Text == "Add Customer")
+                {
+                    addressToSave = new Address
+                    {
+                        Address1 = addressTextBox.Text.Trim(),
+                        Address2 = "",
+                        CityId = currentCityId,
+                        PostalCode = zipTextBox.Text.Trim(),
+                        Phone = phoneTextBox.Text.Trim(),
+                        CreateDate = DateTime.UtcNow,
+                        CreatedBy = currentUser,
+                        LastUpdate = DateTime.UtcNow,
+                        LastUpdateBy = currentUser
+                    };
+                    finalAddressId = DatabaseHelper.AddAddress(addressToSave);
+                }
+                else 
+                {
+                    Address? existingAddress = DatabaseHelper.RetrieveAddress(_currentCustomer.AddressId);
+                    if (existingAddress == null)
+                    {
+                        MessageBox.Show("Could not find existing address for update.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                        return;
+                    }
+
+                    addressToSave = existingAddress;
+                    addressToSave.Address1 = addressTextBox.Text.Trim();
+                    addressToSave.Address2 = ""; 
+                    addressToSave.CityId = currentCityId;
+                    addressToSave.PostalCode = zipTextBox.Text.Trim();
+                    addressToSave.Phone = phoneTextBox.Text.Trim();
+                    addressToSave.LastUpdateBy = currentUser; 
+
+                    DatabaseHelper.UpdateAddress(addressToSave);
+                    finalAddressId = addressToSave.Id;
+                }
+                
+                Customer customerToSave;
+                if (Text == "Add Customer")
+                {
+                    customerToSave = new Customer
+                    {
+                        CustomerName = nameTextBox.Text.Trim(),
+                        AddressId = finalAddressId,
+                        Active = 1,
+                        CreateDate = DateTime.UtcNow,
+                        CreatedBy = currentUser,
+                        LastUpdate = DateTime.UtcNow,
+                        LastUpdateBy = currentUser
+                    };
+                    DatabaseHelper.AddCustomer(customerToSave);
+                }
+                else
+                {
+                    customerToSave = _currentCustomer;
+                    customerToSave.CustomerName = nameTextBox.Text.Trim();
+                    customerToSave.AddressId = finalAddressId;
+                    customerToSave.LastUpdateBy = currentUser;
+
+                    DatabaseHelper.UpdateCustomer(customerToSave);
+                }
+
+                MessageBox.Show("Customer saved successfully!", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                // TODO: Implement robust exception handling, logging, and user notification as per assignment A2b
+                MessageBox.Show($"An error occurred while saving the customer: {ex.Message}", "Database Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void CancelButton_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
 }

C969Project/Data/DatabaseHelper.cs

@@ -1,15 +1,17 @@
-using C969Project.Data.Models;
+using System;
+using System.Data; // For CommandType
 using MySql.Data.MySqlClient;
+using C969Project.Data.Models;
 
-namespace C969Project.Data;
+namespace C969Project.Data
-
+{
     public static class DatabaseHelper 
     {
-    
+        private static string ConnectionString => AppSettings.GetSetting("ConnectionStrings", "DefaultConnection");
         
         public static void Initialize()
         {
-        
+            // Initialization logic if any
         }
 
         public static User? Login(string username, string password)
@@ -82,29 +84,39 @@ public static class DatabaseHelper
             return customers;
         }
 
-    public static void AddCustomer(Customer customer)
+        /// <summary>
+        /// Adds a new customer record to the database and returns the generated customerId.
+        /// </summary>
+        /// <param name="customer">The customer object to add.</param>
+        /// <returns>The ID of the newly added customer; otherwise, 0 if an error occurs.</returns>
+        public static int AddCustomer(Customer customer)
         {
+            int customerId = 0;
             using MySqlConnection connection = new MySqlConnection(AppSettings.GetSetting("ConnectionStrings", "DefaultConnection"));
             try
             {
                 connection.Open();
 
+                // Removed customerId from INSERT statement as it's auto-incremented
                 string query = 
-                "INSERT INTO customer (customerId, customerName, addressId, active, createDate, createdBy, lastUpdate, lastUpdateBy) " +
+                    "INSERT INTO customer (customerName, addressId, active, createDate, createdBy, lastUpdate, lastUpdateBy) " +
-                "VALUES (@customerId, @customerName, @addressId, @active, @createDate, @createdBy, @lastUpdate, @lastUpdateBy)";
+                    "VALUES (@customerName, @addressId, @active, @createDate, @createdBy, CURRENT_TIMESTAMP, @lastUpdateBy); " + // Use CURRENT_TIMESTAMP for lastUpdate
+                    "SELECT LAST_INSERT_ID();"; // Get the newly generated ID
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
-            command.Parameters.AddWithValue("@customerId", customer.CustomerId);
                 command.Parameters.AddWithValue("@customerName", customer.CustomerName);
                 command.Parameters.AddWithValue("@addressId", customer.AddressId);
                 command.Parameters.AddWithValue("@active", customer.Active);
                 command.Parameters.AddWithValue("@createDate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@createdBy", AppState.CurrentUser.Username);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
+                command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username); // lastUpdateBy is updated manually
-            command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 
-            command.ExecuteNonQuery();
+                object result = command.ExecuteScalar();
+                if (result != null && result != DBNull.Value)
+                {
+                    customerId = Convert.ToInt32(result);
+                }
             }
             catch (MySqlException e)
             {
@@ -116,6 +128,7 @@ public static class DatabaseHelper
                 Console.WriteLine($"General Error: {ex.Message}");
                 throw;
             }
+            return customerId;
         }
 
         public static void UpdateCustomer(Customer customer)
@@ -127,15 +140,14 @@ public static class DatabaseHelper
 
                 string query = 
                     "UPDATE customer SET customerName = @customerName, addressId = @addressId, active = @active, " +
-                "lastUpdate = @lastUpdate, lastUpdateBy = @lastUpdateBy WHERE customerId = @customerId";
+                    "lastUpdate = CURRENT_TIMESTAMP, lastUpdateBy = @lastUpdateBy WHERE customerId = @customerId"; // Use CURRENT_TIMESTAMP for lastUpdate
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
                 command.Parameters.AddWithValue("@customerName", customer.CustomerName);
                 command.Parameters.AddWithValue("@addressId", customer.AddressId);
                 command.Parameters.AddWithValue("@active", customer.Active);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
+                command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username); // lastUpdateBy is updated manually
-            command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 command.Parameters.AddWithValue("@customerId", customer.CustomerId);
                 
                 command.ExecuteNonQuery();
@@ -260,20 +272,27 @@ public static class DatabaseHelper
             return addresses;
         }
 
-    public static void AddAddress(Address address)
+        /// <summary>
+        /// Adds a new address to the database and returns the generated addressId.
+        /// </summary>
+        /// <param name="address">The address object to add.</param>
+        /// <returns>The ID of the newly added address; otherwise, 0 if an error occurs.</returns>
+        public static int AddAddress(Address address)
         {
+            int addressId = 0;
             using MySqlConnection connection = new MySqlConnection(AppSettings.GetSetting("ConnectionStrings", "DefaultConnection"));
             try
             {
                 connection.Open();
 
+                // Removed addressId from INSERT statement as it's auto-incremented
                 string query = 
-                "INSERT INTO address (addressId, address, address2, cityId, postalCode, phone, createDate, createdBy, lastUpdate, lastUpdateBy) " +
+                    "INSERT INTO address (address, address2, cityId, postalCode, phone, createDate, createdBy, lastUpdate, lastUpdateBy) " +
-                "VALUES (@addressId, @address1, @address2, @cityId, @postalCode, @phone, @createDate, @createdBy, @lastUpdate, @lastUpdateBy)";
+                    "VALUES (@address1, @address2, @cityId, @postalCode, @phone, @createDate, @createdBy, CURRENT_TIMESTAMP, @lastUpdateBy); " + // Use CURRENT_TIMESTAMP for lastUpdate
+                    "SELECT LAST_INSERT_ID();"; // Get the newly generated ID
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
-            command.Parameters.AddWithValue("@addressId", address.Id);
                 command.Parameters.AddWithValue("@address1", address.Address1);
                 command.Parameters.AddWithValue("@address2", address.Address2);
                 command.Parameters.AddWithValue("@cityId", address.CityId);
@@ -281,10 +300,13 @@ public static class DatabaseHelper
                 command.Parameters.AddWithValue("@phone", address.Phone);
                 command.Parameters.AddWithValue("@createDate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@createdBy", AppState.CurrentUser.Username);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 
-            command.ExecuteNonQuery();
+                object result = command.ExecuteScalar();
+                if (result != null && result != DBNull.Value)
+                {
+                    addressId = Convert.ToInt32(result);
+                }
             }
             catch (MySqlException e)
             {
@@ -296,6 +318,7 @@ public static class DatabaseHelper
                 Console.WriteLine($"General Error: {ex.Message}");
                 throw;
             }
+            return addressId;
         }
 
         public static void UpdateAddress(Address address)
@@ -307,7 +330,7 @@ public static class DatabaseHelper
 
                 string query = 
                     "UPDATE address SET address = @address1, address2 = @address2, cityId = @cityId, postalCode = @postalCode, " +
-                "phone = @phone, lastUpdate = @lastUpdate, lastUpdateBy = @lastUpdateBy WHERE addressId = @addressId";
+                    "phone = @phone, lastUpdate = CURRENT_TIMESTAMP, lastUpdateBy = @lastUpdateBy WHERE addressId = @addressId"; // Use CURRENT_TIMESTAMP for lastUpdate
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
@@ -316,7 +339,6 @@ public static class DatabaseHelper
                 command.Parameters.AddWithValue("@cityId", address.CityId);
                 command.Parameters.AddWithValue("@postalCode", address.PostalCode);
                 command.Parameters.AddWithValue("@phone", address.Phone);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 command.Parameters.AddWithValue("@addressId", address.Id);
                 
@@ -639,28 +661,62 @@ public static class DatabaseHelper
             return cities;
         }
         
-    public static void AddCity(City city)
+        public static int GetCityId(string cityName, int countryId)
         {
+            int cityId = 0;
+            try
+            {
+                using (MySqlConnection connection = new MySqlConnection(ConnectionString))
+                {
+                    connection.Open();
+                    string query = "SELECT cityId FROM city WHERE city = @cityName AND countryId = @countryId";
+                    using (MySqlCommand cmd = new MySqlCommand(query, connection))
+                    {
+                        cmd.Parameters.AddWithValue("@cityName", cityName);
+                        cmd.Parameters.AddWithValue("@countryId", countryId);
+                        object result = cmd.ExecuteScalar();
+                        if (result != null && result != DBNull.Value)
+                        {
+                            cityId = Convert.ToInt32(result);
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                // TODO: Implement robust exception handling, logging, and user notification as per assignment A2b/A3b.
+                Console.WriteLine($"Error getting city ID: {ex.Message}");
+            }
+            return cityId;
+        }
+        
+        public static int AddCity(City city)
+        {
+            int cityId = 0;
             using MySqlConnection connection = new MySqlConnection(AppSettings.GetSetting("ConnectionStrings", "DefaultConnection"));
             try
             {
                 connection.Open();
 
+                // Removed cityId from INSERT statement as it's auto-incremented
                 string query = 
-                "INSERT INTO city (cityId, city, countryId, createDate, createdBy, lastUpdate, lastUpdateBy) " +
+                    "INSERT INTO city (city, countryId, createDate, createdBy, lastUpdate, lastUpdateBy) " +
-                "VALUES (@cityId, @cityName, @countryId, @createDate, @createdBy, @lastUpdate, @lastUpdateBy)";
+                    "VALUES (@cityName, @countryId, @createDate, @createdBy, CURRENT_TIMESTAMP, @lastUpdateBy); " + // Use CURRENT_TIMESTAMP for lastUpdate
+                    "SELECT LAST_INSERT_ID();"; // Get the newly generated ID
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
-            command.Parameters.AddWithValue("@cityId", city.CityID);
                 command.Parameters.AddWithValue("@cityName", city.CityName);
                 command.Parameters.AddWithValue("@countryId", city.CountryID);
                 command.Parameters.AddWithValue("@createDate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@createdBy", AppState.CurrentUser.Username);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 
-            command.ExecuteNonQuery();
+                object result = command.ExecuteScalar();
+                if (result != null && result != DBNull.Value)
+                {
+                    cityId = Convert.ToInt32(result);
+                }
             }
             catch (MySqlException e)
             {
@@ -672,6 +728,7 @@ public static class DatabaseHelper
                 Console.WriteLine($"General Error: {ex.Message}");
                 throw;
             }
+            return cityId;
         }
 
         public static void UpdateCity(City city)
@@ -683,13 +740,12 @@ public static class DatabaseHelper
 
                 string query = 
                     "UPDATE city SET city = @cityName, countryId = @countryId, " +
-                "lastUpdate = @lastUpdate, lastUpdateBy = @lastUpdateBy WHERE cityId = @cityId";
+                    "lastUpdate = CURRENT_TIMESTAMP, lastUpdateBy = @lastUpdateBy WHERE cityId = @cityId"; // Use CURRENT_TIMESTAMP for lastUpdate
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
                 command.Parameters.AddWithValue("@cityName", city.CityName);
                 command.Parameters.AddWithValue("@countryId", city.CountryID);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 command.Parameters.AddWithValue("@cityId", city.CityID);
                 
@@ -807,27 +863,60 @@ public static class DatabaseHelper
             return countries;
         }
         
-    public static void AddCountry(Country country)
+        public static int GetCountryId(string countryName)
         {
+            int countryId = 0;
+            try
+            {
+                using (MySqlConnection connection = new MySqlConnection(ConnectionString))
+                {
+                    connection.Open();
+                    string query = "SELECT countryId FROM country WHERE country = @countryName";
+                    using (MySqlCommand cmd = new MySqlCommand(query, connection))
+                    {
+                        cmd.Parameters.AddWithValue("@countryName", countryName);
+                        object result = cmd.ExecuteScalar();
+                        if (result != null && result != DBNull.Value)
+                        {
+                            countryId = Convert.ToInt32(result);
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                // TODO: Implement robust exception handling, logging, and user notification as per assignment A2b/A3b.
+                Console.WriteLine($"Error getting country ID: {ex.Message}");
+            }
+            return countryId;
+        }
+        
+        public static int AddCountry(Country country)
+        {
+            int countryId = 0;
             using MySqlConnection connection = new MySqlConnection(AppSettings.GetSetting("ConnectionStrings", "DefaultConnection"));
             try
             {
                 connection.Open();
 
+                // Removed countryId from INSERT statement as it's auto-incremented
                 string query = 
-                "INSERT INTO country (countryId, country, createDate, createdBy, lastUpdate, lastUpdateBy) " +
+                    "INSERT INTO country (country, createDate, createdBy, lastUpdate, lastUpdateBy) " +
-                "VALUES (@countryId, @countryName, @createDate, @createdBy, @lastUpdate, @lastUpdateBy)";
+                    "VALUES (@countryName, @createDate, @createdBy, CURRENT_TIMESTAMP, @lastUpdateBy); " + // Use CURRENT_TIMESTAMP for lastUpdate
+                    "SELECT LAST_INSERT_ID();"; // Get the newly generated ID
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
-            command.Parameters.AddWithValue("@countryId", country.CountryID);
                 command.Parameters.AddWithValue("@countryName", country.CountryName);
                 command.Parameters.AddWithValue("@createDate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@createdBy", AppState.CurrentUser.Username);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 
-            command.ExecuteNonQuery();
+                object result = command.ExecuteScalar();
+                if (result != null && result != DBNull.Value)
+                {
+                    countryId = Convert.ToInt32(result);
+                }
             }
             catch (MySqlException e)
             {
@@ -839,6 +928,7 @@ public static class DatabaseHelper
                 Console.WriteLine($"General Error: {ex.Message}");
                 throw;
             }
+            return countryId;
         }
 
         public static void UpdateCountry(Country country)
@@ -850,12 +940,11 @@ public static class DatabaseHelper
 
                 string query = 
                     "UPDATE country SET country = @countryName, " +
-                "lastUpdate = @lastUpdate, lastUpdateBy = @lastUpdateBy WHERE countryId = @countryId";
+                    "lastUpdate = CURRENT_TIMESTAMP, lastUpdateBy = @lastUpdateBy WHERE countryId = @countryId"; // Use CURRENT_TIMESTAMP for lastUpdate
                 
                 using MySqlCommand command = new MySqlCommand(query, connection);
                 
                 command.Parameters.AddWithValue("@countryName", country.CountryName);
-            command.Parameters.AddWithValue("@lastUpdate", DateTime.UtcNow);
                 command.Parameters.AddWithValue("@lastUpdateBy", AppState.CurrentUser.Username);
                 command.Parameters.AddWithValue("@countryId", country.CountryID);
                 
@@ -901,3 +990,4 @@ public static class DatabaseHelper
             DeleteCountry(country.CountryID);
         }
     }
+}

C969Project/RecordsForm.cs

@@ -16,12 +16,14 @@ public partial class RecordsForm : Form
         AddButton.Click += (sender, args) =>
         {
             _form.InitAdd();
+            _form.Closed += (o, args2) => { UpdateCustomersList(); };
         };
         
         ModifyButton.Click += (sender, args) =>
         {
             var selectedCustomer = _customers[CustomersDataGrid.CurrentCell.RowIndex];
             _form.InitUpdate(selectedCustomer);
+            _form.Closed += (o, args2) => { UpdateCustomersList(); };
         };
 
         DeleteButton.Click += (sender, args) =>