frmUserAccount.cs

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

namespace pos_and_inventory_csharp
{
    public partial class frmUserAccount : Form
    {

        SqlConnection cn = new SqlConnection();
        SqlCommand cm = new SqlCommand();
        SqlDataReader dr;
        DBConnection dbcon = new DBConnection();

        public frmUserAccount()
        {
            InitializeComponent();
            cn = new SqlConnection(dbcon.MyConnection());
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            this.Dispose();
        }

        private void frmUserAccount_Resize(object sender, EventArgs e)
        {
            metroTabControl1.Left = (this.Width - metroTabControl1.Width) / 2;
            metroTabControl1.Top = (this.Height - metroTabControl1.Height) / 2;
        }

        private void Clear()
        {
            txtName.Clear();
            txtPass.Clear();
            txtRetype.Clear();
            txtUser.Clear();
            cboRole.Text = "";
            txtUser.Focus();

        }



        private void panel2_Paint(object sender, PaintEventArgs e)
        {

        }

        private void frmUserAccount_Load(object sender, EventArgs e)
        {

        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            Clear();

        }

        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                if(txtPass.Text != txtRetype.Text)
                {
                    MessageBox.Show("Password did not match!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
                cn.Open();
                cm = new SqlCommand("insert into tbluser (username, password, role, name) values (@username, @password, @role, @name)", cn);
                cm.Parameters.AddWithValue("@username", txtUser.Text);
                cm.Parameters.AddWithValue("@password", txtPass.Text);
                cm.Parameters.AddWithValue("@role", cboRole.Text);
                cm.Parameters.AddWithValue("@name", txtName.Text);
                cm.ExecuteNonQuery();

                cn.Close();
                MessageBox.Show("New Account has saved!");
                Clear();


            }catch(Exception ex)
            {
                cn.Close();
                MessageBox.Show(ex.Message, "User Account Save Error");
            }
        }
    }
}