C# MDI Form + Entity Framework + Data Access Layer + Entity Layer + Business Logic Layer Design Pattern
using System; using System.Windows.Forms; using SoccerApp.MDIChild; namespace SoccerApp { public partial class Master : Form { private Team TeamMDIChild; private Player PlayerMDIChild; private Nation NationMDIChild; public Master() { InitializeComponent(); } private void Master_Load(object sender, EventArgs e) { } private void teamToolStripMenuItem_Click(object sender, EventArgs e) { MinimizedAll(); if (TeamMDIChild == null || TeamMDIChild.IsDisposed) { TeamMDIChild = new Team(); TeamMDIChild.MdiParent = this; } TeamMDIChild.Visible = true; TeamMDIChild.WindowState = FormWindowState.Maximized; } private void playerToolStripMenuItem_Click(object sender, EventArgs e) { MinimizedAll(); if (PlayerMDIChild == null || PlayerMDIChild.IsDisposed) { PlayerMDIChild = new Player(); PlayerMDIChild.MdiParent = this; } PlayerMDIChild.Visible = true; PlayerMDIChild.WindowState = FormWindowState.Maximized; } private void nationToolStripMenuItem_Click(object sender, EventArgs e) { MinimizedAll(); if (NationMDIChild == null || NationMDIChild.IsDisposed) { NationMDIChild = new Nation(); NationMDIChild.MdiParent = this; } NationMDIChild.Visible = true; NationMDIChild.WindowState = FormWindowState.Maximized; } private void MinimizedAll() { if (TeamMDIChild != null && !TeamMDIChild.IsDisposed) { TeamMDIChild.Visible = false; TeamMDIChild.WindowState = FormWindowState.Minimized; } if (PlayerMDIChild != null && !PlayerMDIChild.IsDisposed) { PlayerMDIChild.Visible = false; PlayerMDIChild.WindowState = FormWindowState.Minimized; } if (NationMDIChild != null && !NationMDIChild.IsDisposed) { NationMDIChild.Visible = false; NationMDIChild.WindowState = FormWindowState.Minimized; } } } } |