C/S WinForm自定义控件实现B/S菜单样式

思路：

1.      创建项目，添加自定义控件UCTreeView

2.      添加flowLayoutPanel容器控件

3.      添加属性，动态添加菜单连接

4.      Form引用控件

　　

// 属性 数据源
public IList<Class1> myClass { get; set; }

        /// <summary>
        /// 读取父级菜单栏
        /// </summary>
        private void GetParentData()
        {
            foreach (var data in myClass)
            {
                if (data.PID == 0)
                {
                    // 动态生成一个Button，用来显示一级菜单，设置属性
                    Button btParent = new Button();
                    btParent.Text = data.Name.ToString();
                    btParent.Name = data.ID.ToString();
                    btParent.BackgroundImage = global::TreeView.Properties.Resources.left_nav_bg;
                    btParent.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
                    btParent.Cursor = System.Windows.Forms.Cursors.Hand;
                    btParent.Dock = System.Windows.Forms.DockStyle.Fill;
                    btParent.FlatAppearance.BorderSize = 0;
                    btParent.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
                    btParent.ForeColor = System.Drawing.Color.White;
                    btParent.Size = new System.Drawing.Size(172, 28);
                    btParent.TabIndex = 0;
                    btParent.UseVisualStyleBackColor = true;
                    btParent.TabIndex = 0;
                    // 将button添加到面板控件中显示
                    this.flowLayoutPanel1.Controls.Add(btParent);
                    // 根据一级菜单获取二级菜单信息，并显示
                    AddNode(data.ID);
                    // button点击事件
                    btParent.Click += new EventHandler(btParent_Click);
                }
            }
        }
        /// <summary>
        /// 点击事件，控制二级菜单是否显示
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void btParent_Click(object sender, EventArgs e)
        {
            Button btn = sender as Button;
            if (this.flowLayoutPanel1.Controls.ContainsKey("pl_" + btn.Text))
            {
                Panel pl = this.flowLayoutPanel1.Controls["pl_" + btn.Text] as Panel;
                // 判断二级菜单是否为显示，如显示则隐藏，如隐藏则关闭
                if (pl.Visible == true)
                    pl.Visible = false;
                else
                    pl.Visible = true;
            }
        }
        /// <summary>
        /// 二级菜单的填充显示
        /// </summary>
        /// <param name="p">父级ID</param>
        private void AddNode(int p)
        {
            // 二级菜单总容器控件
            Panel pl = new Panel();
            pl.Name = "pl_" + p;
            foreach (var data in myClass)
            {
                if (data.PID == p)
                {
                    Button btnChild = new Button();
                    btnChild.Text = data.Name.ToString();
                    btnChild.Name = data.ID.ToString();
                    btnChild.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
                    btnChild.Cursor = System.Windows.Forms.Cursors.Hand;
                    btnChild.Dock = System.Windows.Forms.DockStyle.Top;
                    btnChild.FlatAppearance.BorderSize = 0;
                    btnChild.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
                    btnChild.ForeColor = System.Drawing.Color.Black;
                    btnChild.Name = "btnChild";
                    btnChild.Size = new System.Drawing.Size(172, 28);
                    btnChild.TabIndex = 0;
                    btnChild.Text = data.ID.ToString();
                    btnChild.UseVisualStyleBackColor = true;
                    // 将菜单添加到容器中pl
                    pl.Controls.Add(btnChild);
                }
            }
            // 将动态容器添加到总容器面板中
            this.flowLayoutPanel1.Controls.Add(pl);
        }

注：动态创建控件添加，布局规则为：先进为下，后进为上。