CNSA-212-Personal/Chapter6/frmMain.cs

using System;
using System.Windows.Forms;
using System.Security.Principal;

namespace Chapter6
{
    public partial class frmMain : Form
    {

        private Timer timer;
        public frmMain()
        {
            InitializeComponent();

            lblUser.Text = WindowsIdentity.GetCurrent().Name.ToString();

            timer = new Timer
            {
                Interval = 1000
            };

            timer.Tick += Tick;
            timer.Start();

        }

        private void Tick(object sender, EventArgs e)
        {

            lblDateTime.Text = DateTime.Now.ToString("f");

        }

        private void mnuFileExit_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void mnuFileExit_Click_1(object sender, EventArgs e)
        {
            Close();
        }

        private void mnuEditCalculate_Click(object sender, EventArgs e)
        {
            frmCalculate aform = new frmCalculate();

            mnuFile.Visible = true;
            mnuEditSummary.Enabled = true;


            aform.MdiParent = this;
            aform.StartPosition = FormStartPosition.CenterParent;
            aform.Show();
            aform.Focus();

            mnuEditCalculate.Checked = true;
            
           

        }

        private void mnuEditSummary_Click(object sender, EventArgs e)
        {
            frmSummary aform = new frmSummary();

                mnuFile.Visible = true;
               


                aform.MdiParent = this;
                aform.StartPosition = FormStartPosition.CenterParent;
                aform.Show();
                aform.Focus();

                mnuEditSummary.Checked = true;
            
        }

        private void mnuHelpAbout_Click(object sender, EventArgs e)
        {
            frmAbout aform = new frmAbout();

            mnuFile.Visible = true;
               


            aform.MdiParent = this;
            aform.StartPosition = FormStartPosition.CenterParent;
            aform.Show();
            aform.Focus();

            mnuHelpAbout.Checked = true;
        }

        private void mnuWindowVertical_Click(object sender, EventArgs e)
        {
            
            this.LayoutMdi(MdiLayout.TileVertical);
            
        }

        private void munWindowHorizontal_Click(object sender, EventArgs e)
        {
            LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void mnuWindowsCascade_Click(object sender, EventArgs e)
        {
            LayoutMdi(MdiLayout.Cascade);
        }

        private void mnuWindowCloseAll_Click(object sender, EventArgs e)
        {
            foreach (var childform in MdiChildren)
            {
                
                childform.Close();
                
            }
        }

        private void statusStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {
            
        }
    }
}