Biskilog/BISKILOG POS BASIC/Users/AdminUser.cs

using BiskLog_Point_Of_Sale;
using BiskLog_Point_Of_Sale.Cashier_Module;
using BiskLog_Point_Of_Sale.Company_Setup;
using BiskLog_Point_Of_Sale.Multiple_Login;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Point_Of_Sale_Managment
{
    public partial class AdminUser : Form
    {
        SqlConnection cn;
        SqlCommand cm;
        DatabaseConn conn = new DatabaseConn();
        SqlDataReader dr;
        string firstname = "", surname = "", address1 = "", address2 = "", state = "", phone = "", email = "", pass = "";
        private void TxtPassword_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Back)
            {
                txtPassword.Text = "";
                txtConfirmation.Text = "";
            }
        }
        private async void Button1_Click(object sender, EventArgs e)
        {
            if ((txtPassword.Text.Equals(txtConfirmation.Text)) && !String.IsNullOrEmpty(txtPassword.Text))
            {
                Task<int> task = new Task<int>(updateDetails);
                holding.Visible = true;
                button1.Enabled = false;
                button2.Enabled = false;
                task.Start();
                int result = await task;
                if (result == 1)
                {
                    string title = "Success";
                    string message = "Update successful";
                    NoAction noAction = new NoAction(title, message);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
                else
                {
                    string title = "Error Occurred";
                    string message = "An error occurred while updating user details, please try again later";
                    NoAction noAction = new NoAction(title, message);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
                holding.Visible = false;
                button1.Enabled = true;
                button2.Enabled = true;
            }

        }
        public AdminUser()
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            holding.Left = (ClientSize.Width - holding.Width) / 2;
        }
        private async void AdminUser_Load(object sender = null, EventArgs e = null)
        {
            Task<int> task = new Task<int>(getUser);
            holding.Visible = true;
            task.Start();
            int result = await task;
            if (result == 0)
            {
                string title = "Error Occurred";
                string message = "An error occurred while getting user details, please try again later";
                NoAction noAction = new NoAction(title, message);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
            holding.Visible = false;
        }
        public int getUser()
        {
            string currentUser;
            currentUser = MainLogin.login_user;

            try
            {
                cn.Open();
                cm = new SqlCommand("Select firstname,surname,street_address1,street_address2,tblUsers.state_or_province,telephone,email,access_level," +
                    "tblBranches.branchName,username,password from tblUsers Left Join tblBranches On tblBranches.branchID = tblUsers.branchID where username = @username", cn);
                cm.Parameters.AddWithValue("@username", currentUser);
                cm.ExecuteNonQuery();
                dr = cm.ExecuteReader();
                dr.Read();
                if (dr.HasRows)
                {
                    txtBranch.Invoke(new Action(() =>
                    {
                        txtBranch.Text = dr["branchName"].ToString();
                        firstname = txtFirstname.Text = dr[0].ToString();
                        surname = txtSurname.Text = dr[1].ToString();
                        address1 = txtAddress1.Text = dr[2].ToString();
                        address2 = txtAddress2.Text = dr[3].ToString();
                        state = txtState.Text = dr[4].ToString();
                        phone = txtPhone.Text = dr[5].ToString();
                        email = txtEmail.Text = dr[6].ToString();
                        switch (dr[7].ToString())
                        {
                            case "owner":
                                acesslevel.Text = "Owner";
                                break;
                            case "manager":
                                acesslevel.Text = "Manager";
                                break;
                            case "assist":
                                acesslevel.Text = "Assistant Manager";
                                break;
                            case "cashier":
                                acesslevel.Text = "Cashier";
                                break;
                        }
                        txtusername.Text = dr[9].ToString();
                        pass = txtPassword.Text = passwordEncryption.Decrypt(dr[10].ToString());
                        txtConfirmation.Text = passwordEncryption.Decrypt(dr[10].ToString());
                    }));
                }
                dr.Close();
                cn.Close();
                return 1;
            }
            catch
            {
                cn.Close();
                return 0;
            }
        }
        public int updateDetails()
        {
            try
            {
                cn.Open();
                cm = new SqlCommand("Update tblUsers set firstname = @firstname,surname = @surname,street_address1=@address1,street_address2 = @address2,state_or_province = @state," +
                    "telephone = @telephone,email = @email,password = @password where username = @username", cn);
                cm.Parameters.AddWithValue("@username", MainLogin.login_user);
                txtFirstname.Invoke(new Action(() =>
               {
                   cm.Parameters.AddWithValue("@firstname", txtFirstname.Text);
                   cm.Parameters.AddWithValue("@surname", txtSurname.Text);
                   cm.Parameters.AddWithValue("@address1", txtAddress1.Text);
                   cm.Parameters.AddWithValue("@address2", txtAddress2.Text);
                   cm.Parameters.AddWithValue("@state", txtState.Text);
                   cm.Parameters.AddWithValue("@email", txtEmail.Text);
                   cm.Parameters.AddWithValue("@telephone", txtPhone.Text);
                   cm.Parameters.AddWithValue("@password", passwordEncryption.Encrypt(txtPassword.Text));
                   cm.ExecuteNonQuery();
               }));
                cn.Close();
                return 1;
            }
            catch
            {
                cn.Close();
                return 0;
            }
        }
        private void Button2_Click(object sender, EventArgs e)
        {
            txtFirstname.Text = firstname;
            txtSurname.Text = surname;
            txtAddress1.Text = address1;
            txtAddress2.Text = address2;
            txtState.Text = state;
            txtPhone.Text = phone;
            txtEmail.Text = email;
            txtPassword.Text = pass;
            txtConfirmation.Text = pass;
        }
    }
}