C#学习笔记——MDI窗体（多文档界面）

1、设置父窗体：

如果要将某个窗体设置为父窗体，只需将该窗体的IsMdiContainer属性设置为True即可。

2、设置子窗体：

通过设为某个窗体的MdiParent属性来确定该窗体是那个窗体的子窗体。

语法如下：

1: public Form MdiParent{get;set;}

3、排列MDI子窗体：

语法如下:

1: public void LayoutMdi(MdiLayout value)

value:是MdiLayout的枚举值之一，用来定义MDI子窗体的布局。

枚举成员	说明
Cascade	层叠排列MDI子窗体
TileHorizontal	水平平铺MDI子窗体
TileVertical	垂直平铺MDI子窗体

例程;

1: public partial class FormMain : Form
   2:     {
   3:         public FormMain()
   4:         {
   5:             InitializeComponent();
   6:         }
   7:  
   8:         private void 加载子窗体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 水平平铺ToolStripMenuItem_Click(object sender, EventArgs e)
  24:         {
  25:             LayoutMdi(MdiLayout.TileHorizontal);
  26:         }
  27:  
  28:         private void 垂直平铺ToolStripMenuItem_Click(object sender, EventArgs e)
  29:         {
  30:             LayoutMdi(MdiLayout.TileVertical);
  31:         }
  32:  
  33:         private void 层叠排列ToolStripMenuItem_Click(object sender, EventArgs e)
  34:         {
  35:             LayoutMdi(MdiLayout.Cascade);
  36:         }
  37:  
  38:     }