//Login button clicked:
private void button1_Click(object sender, EventArgs e)
{
//Checking that there is a user with matching username and password fields
User user = ProcessUserController.ValidateUserLogin(userNameTextBox.Text, passwordTextBox.Text);
//If a valid user was found
if (user != null)
{
this.Hide();
userNameTextBox.Clear();
passwordTextBox.Clear();
user.OpenUserMenu();
//Done here not when the logout button is pressed so that the user is still logged out
//even if they just click the close window button.
ProcessUserController.LogoutUser();
this.Show();
}
//Otherwise no such user found
else
{
MessageBox.Show("Invalid username and password combination");
}
userNameTextBox.Clear();
passwordTextBox.Clear();
userNameTextBox.Focus();
}
private void updateRecordsButton_Click(object sender, EventArgs e)
{
//Item List index (and DataGridView row) counter
int i = 0;
UserInfo userData;
foreach (DataGridViewRow row in userDataGridView.Rows)
{
if (!row.CheckRowEmptyCells())
{
//Checking for positive user ID entered as string
if ((!Int32.TryParse(row.Cells[0].Value.ToString(), out int userID)) || (userID <= 0))
{
MessageBox.Show("Error: Please enter a positive number for the user's ID");
return;
}
//Checking for valid UserType entered as string
if (!Enum.TryParse(row.Cells[2].Value.ToString(), true, out UserType userType))
{
MessageBox.Show("Error: Please enter a valid user type");
return;
}
userData = new UserInfo();
userData.ID = userID;
userData.role = userType;
userData.employeeName = row.Cells[1].Value.ToString();
userData.username = row.Cells[3].Value.ToString();
userData.password = row.Cells[4].Value.ToString();
//i < count AND row contents NOT null --> Replace list index's data
if (i < ProcessUserController.UserCount())
{
ProcessUserController.ReplaceUserData(i, userData);
}
//i >= count AND row contents NOT null --> Add new item to list
else
{
//Checking if a user with the same ID or username already exists
if (!ProcessUserController.AddNewUser(userData))
{
MessageBox.Show("Error: There is already a user with that ID or username");
return;
}
}
//Always incrementing if not null
i++;
}
//Otherwise, row has at least 1 empty cell
else
{
//i < count AND row contents null --> Remove list index but don't increment
if (i < ProcessUserController.UserCount())
{
ProcessUserController.RemoveUserAt(i);
}
//i > count AND null --> Do nothing and break, at end of dataView table
else
{
break;
}
}
}
//Updating user textfile and repopulating the DataGridView
ProcessUserController.UpdateUserFiles();
Refresh();
}
/// <summary>
/// Override to clear all rows of the DataGridView before repopulating them again with all user details.
/// </summary>
public override void Refresh()
{
userDataGridView.Rows.Clear();
ProcessUserController.PopulateDataGridView(userDataGridView.Rows);
}