Question

How can I close an opened window when I call a new window? That means I want only 1 child window at the time. I don’t allow multi-window.

public partial class Main_Usr : Form
    {
        public Main_Usr()
        {
            InitializeComponent();
            this.IsMdiContainer = true;

            if (Program.IsFA) barSubItem_Ordre.Visibility = DevExpress.XtraBars.BarItemVisibility.Never;

            Ordre_Liste f = new Ordre_Liste();
            f.MdiParent = this;
            f.Show();
   }

        private void barButtonItem_CreateOrdre_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Program.AllerRetour = "Ordre Aller";
            Ordre_Fiche f = new Ordre_Fiche();
            f.MdiParent = this;
            f.Show();
        }

        private void barButtonItem_OrdreListe_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Ordre_Liste f = new Ordre_Liste();
            f.MdiParent = this;
            f.Show();
        }

        private void barButtonItem_CreateOrdRet_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            Program.AllerRetour = "Ordre Retour";
            Ordre_Fiche f = new Ordre_Fiche();
            f.MdiParent = this;
            f.Show();
        }
    }

Answer 1

There are different ways to implement pseudo masterpage:

• You can create BaseForm form with desired layout. Then inherit other forms from this BaseForm and provide custom content.
• You can create MainForm form with desired layout. Then create content controls as UserControls and show them in panel.
• You can create MasterUserControl with desired layout. Then create content controls by inheriting from MasterUserControl (they will have same layout). Then use your main form as browser for displaying different content controls like pages.

EXAMPLE:

1. Create desired layout on Main_Usr form.
2. Do not set it as MdiContainer
3. If you want to access some controls (e.g. footer or header from child forms, set property Modifiers of those controls to protected)
4. Open Ordre_Liste form code and change it to inherit from Main_Usr form, instead of Form
5. Add custom content to Ordre_Liste form

voila! you have ‘masterpage’

UPDATE (for 3rd option)

1. Create new user control with name MasterUserControl
2. Create desired layout on this control, keeping space for custom content (btw don’t use TableLayoutPanels – they have issue with designer inheritance).
3. Create new user control with name HomeUserControl and change it to inherit from your MasterUserControl.
4. Open HomeUserControl designer and add custom content. Also you can modify parent controls, which has protected modifier.
5. On your main form place HomePageUserControl

There different ways to implement navigation between controls (aka pages). Simplest way – have menu on main form. Other way – define event ‘Navigate’ on master control, subscribe to that event on main form, and raise it from ‘pages’.