C # learning notes-MDI form (Multi-Document Interface ),

C # learning notes-MDI form (Multi-Document Interface ),

1. Set the parent form:

To set a form as the parent form, set the IsMdiContainer attribute of the form to True.

2. Set the subform:

Set the MdiParent attribute of a form to determine that the form is a subform of the form.

Syntax:

1: public Form MdiParent{get;set;}

3. Arrange the MDI subforms:

Syntax:

1: public void LayoutMdi(MdiLayout value)

Value: one of the enumerated values of MdiLayout, used to define the layout of the MDI child form.

Enumeration member	Description
Cascade	Cascade the MDI child forms
TileHorizontal	Horizontal tiled MDI child form
TileVertical	Vertical tiled MDI child form

Routine;

1: public partial class FormMain: Form 2: {3: public FormMain () 4: {5: InitializeComponent (); 6:} 7: 8: private void loading subform ToolStripMenuItem_Click (object sender, EventArgs e) 9: {10: FormChild_1 frm1 = new FormChild_1 (); 11: frm1.MdiParent = this; 12: frm1.Show (); 13: 14: FormChild_2 frm2 = new FormChild_2 (); 15: frm2.MdiParent = this; 16: frm2.Show (); 17: 18: FormChild_3 frm3 = new FormChild_3 (); 19: frm3.MdiParent = this; 20: frm3.Show (); 21:} 22: 23: private void horizontal tile ToolStripMenuItem_Click (object sender, EventArgs e) 24: {25: LayoutMdi (MdiLayout. tileHorizontal); 26:} 27: 28: private void vertically tiled ToolStripMenuItem_Click (object sender, EventArgs e) 29: {30: LayoutMdi (MdiLayout. tileVertical); 31 :}32: 33: private void stacked ToolStripMenuItem_Click (object sender, EventArgs e) 34: {35: LayoutMdi (MdiLayout. cascade); 36:} 37: 38 :}