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Rev Author Line No. Line
9 Kevin 1 
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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namespace SWAT_Office_App
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{
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    public partial class Add_User_Account_Form : Form
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    {
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        private static Add_User_Account_Form _Add_User_Account_Instance = null;
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        // Modified singleton instance
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        public static Add_User_Account_Form Add_User_Account_Instance
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        {
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            get
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            {
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                _Add_User_Account_Instance = new Add_User_Account_Form();
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                return _Add_User_Account_Instance;
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            }
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        }
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        public Add_User_Account_Form()
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        {
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            InitializeComponent();
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            resetForm();
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            this.txt_Username.TextChanged += new EventHandler(txt_EmptyTxtBox);
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            this.txt_Password.TextChanged += new EventHandler(txt_EmptyTxtBox);
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            this.txt_Username.KeyPress += new KeyPressEventHandler(txt_Username_KeyPress);
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        }
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        private void resetForm()
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        {
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            this.btn_Add.Enabled = false;
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            this.txt_Username.Text = "";
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            this.txt_Password.Text = "";
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            this.txt_Username.Tag = false;
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            this.txt_Password.Tag = false;
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            this.txt_Username.Focus();
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        }
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        private void txt_EmptyTxtBox(object sender, EventArgs e)
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        {
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            TextBox tb = (TextBox)sender;
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            if (tb.Text.Length == 0)
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                tb.Tag = false;
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            else
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                tb.Tag = true;
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            ValidateBox();
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        }
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        private void ValidateBox()
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        {
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            this.btn_Add.Enabled = ((bool)(this.txt_Username.Tag) && (bool)(this.txt_Password.Tag));
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        }
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        private void txt_Username_KeyPress(object sender, KeyPressEventArgs e)
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        {
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            // Blocks symbols that cannot be used in the username field
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            if ((e.KeyChar < 32 || e.KeyChar == 34 || (e.KeyChar > 41 && e.KeyChar < 45) || e.KeyChar == 47 ||
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                (e.KeyChar > 57 && e.KeyChar < 65) || (e.KeyChar > 90 && e.KeyChar < 94) || e.KeyChar > 122) && e.KeyChar != 8)
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                e.Handled = true;
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        }
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        private void btn_Cancel_Click(object sender, EventArgs e)
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        {
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            this.Close();
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        }
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        private void btn_Add_Click(object sender, EventArgs e)
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        {
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            if (Manage_User_Accounts.AddUser(txt_Username.Text, txt_Password.Text))
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            {
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                if (this.chk_Share.Checked == true)
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                    if (!Manage_User_Accounts.CreateShareFolder(txt_Username.Text))
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                    {
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                        Debug.appendText("Error occured while creating shared folder");
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                        MessageBox.Show("Error occured when creating shared folder", "Error");
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                    }
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                this.Close();
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            }
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            else
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            {
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                Debug.appendText("Error occured while creating new user account");
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                MessageBox.Show("Error occured when creating new user account","Error");
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                resetForm();
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            }
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        }
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    }
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}