private void btnTest_Click(object sender, EventArgs e)
        {
            _db = new DataContext();

            int uId = _db.GetLogger(txtUsername.Text, txtPassword.Text);

            if (uId == 0)
            {
                MessageBox.Show("Wrong Username or Password", "Invalid Login");
            }
            else
            {
                String type = _db.CheckUserType(uId);
                bool   log  = true;
                _db.InsertLogActivity(uId);
                if (log == true && type == "bloodbank")
                {
                    AdminDashBoard adminDashboard = new AdminDashBoard(uId);
                    adminDashboard.Show();
                    this.Hide();
                }
                if (log == true && type == "DONOR")
                {
                    DonorDashBoard adminDashboard = new DonorDashBoard(uId);
                    adminDashboard.Show();
                    this.Hide();
                }
                if (log == true && type == "EMPLOYEE")
                {
                    BranchDashBoard branchDashboard = new BranchDashBoard(uId);
                    branchDashboard.Show();
                    this.Hide();
                }
            }
        }
        public DonorDetails(DonorDashBoard donorForm, string _action, int donorId, int _branchId)
        {
            this.donorForm = donorForm;
            this._action   = _action;
            this.donorId   = donorId;
            this._branchId = _branchId;

            InitializeComponent();

            comboBloodGroup.SelectedIndex = 0;
            comboGender.SelectedIndex     = 0;
            txtBirthdate.Value            = DateTime.Now.AddYears(-15);
            txtLastDonateDate.Value       = DateTime.Now.AddYears(-10);
            CheckAction(_action);
        }