namespace _001_MenuHistory
{public partial class Form1 : Form{string address;public Form1(){InitializeComponent();address = System.Environment.CurrentDirectory;}//将打开文件路径写入INI文件private void 打开ToolStripMenuItem_Click(object sender, EventArgs e){openFileDialog1.FileName = "";          //设定打开文件对话框的初始化内容为空this.openFileDialog1.ShowDialog();      //显示打开文件对话框StreamWriter s = new StreamWriter(address + "\\Menu.ini", true);    //定义一个以一种特定编码向流中写入数据的对象s.WriteLine(openFileDialog1.FileName);  //写入INI文件s.Flush();                              //清理当前编写器的所有缓冲区，并使所有缓冲数据写入基础流s.Close();                              //关闭当前的StreamWriter对象和基础流ShowWindows(openFileDialog1.FileName);  //调用自定义方法ShowWindows}//读取INI文件并将信息加入菜单private void Form1_Load(object sender, EventArgs e){StreamReader sr = new StreamReader(address + "\\Menu.ini");             //声明一个以一种特定编码从字节流中读取字符的对象int i = this.文件ToolStripMenuItem.DropDownItems.Count - 2;             //定义一个ini型变量i并为其赋值while (sr.Peek() >= 0)                                                  //读取INI文件{ToolStripMenuItem menuitem = new ToolStripMenuItem(sr.ReadLine());  //声明一个ToolStripMenuItem对象this.文件ToolStripMenuItem.DropDownItems.Insert(i, menuitem);       //向菜单中添加内容i++;                                                                 //int型变量i递增menuitem.Click += new EventHandler(menuitem_Click);                  //为菜单中的可选项生成处理程序}sr.Close();                                                              //关闭当前的StreamReader对象和基础流}private void menuitem_Click(object sender, EventArgs e){ToolStripMenuItem menu = (ToolStripMenuItem)sender;ShowWindows(menu.Text);}//自定义方法ShowWindows用来加载背景图片并显示窗体public void ShowWindows(string fileName)  {Image p = Image.FromFile(fileName);     //定义一个Image型的变量pForm f = new Form();                    //定义一个Form型的变量ff.MdiParent = this;                     //设定当前窗体为MDI父窗体f.BackgroundImage = p;                  //为窗体f设置背景图片f.Show();                               //显示窗体}private void 退出ToolStripMenuItem_Click(object sender, EventArgs e){Application.Exit();}}

namespace UniteMenu
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void toolStripMenuItem1_Click(object sender, EventArgs e){Form2 f = new Form2();                      //定义一个Form型的对象ff.MdiParent = this;                         //设置f的MDI父窗体f.Show();                                   //显示子窗体f.Resize += new EventHandler(f_Resize);     //为窗体f生成调整大小的处理程序}void f_Resize(object sender, EventArgs e){Form2 f = (Form2)sender;                                    //将sender类型的变量转换为Form型并赋值给fToolStripMenuItem item = new ToolStripMenuItem();           //声明一个ToolStripMenuItem型的对象itemfor (int i = 0; i < f.contextMenuStrip2.Items.Count; )      //循环遍历菜单中的每一项{item.DropDownItems.Add(f.contextMenuStrip2.Items[i]);   //向菜单中添加新内容}this.contextMenuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {item}); //向菜单项中添加集合}}
}

namespace _005_HideMenu
{public partial class Form1 : Form{int i = 2;public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){//启动时设置以下菜单项隐藏this.设置密码ToolStripMenuItem.Visible = false;this.添加用户ToolStripMenuItem.Visible = false;this.忘记密码ToolStripMenuItem.Visible = false;this.修改密码ToolStripMenuItem.Visible = false;this.员工录入ToolStripMenuItem.Visible = false;}private void 展开关闭其他项ToolStripMenuItem_Click(object sender, EventArgs e){switch (i){case 1://设置以下菜单项隐藏this.设置密码ToolStripMenuItem.Visible = false;this.添加用户ToolStripMenuItem.Visible = false;this.忘记密码ToolStripMenuItem.Visible = false;this.修改密码ToolStripMenuItem.Visible = false;this.员工录入ToolStripMenuItem.Visible = false;i = 2;//显示与ToolStripDropDownItem有关的ToolStripDropDownItem控件this.操作ToolStripMenuItem.ShowDropDown();break;case 2:this.设置密码ToolStripMenuItem.Visible = true;this.添加用户ToolStripMenuItem.Visible = true;this.忘记密码ToolStripMenuItem.Visible = true;this.修改密码ToolStripMenuItem.Visible = true;this.员工录入ToolStripMenuItem.Visible = true;i = 1;//显示与ToolStripDropDownItem有关的ToolStripDropDownItem控件this.操作ToolStripMenuItem.ShowDropDown();break;}}}
}