C# WinFrom SplitContainer和UserControl组成简单的类似于web系统的框架页

示例效果：
FrameForm分为上左右三区
上区显示TopUC的顶部Logo及欢迎语
左区显示LeftMenuUC的左侧功能按钮菜单
右区显示点击左侧功能按钮后对应的用户控件窗体内容
(事实上功能按钮应该由传统的WinForm菜单来代替 WinForm程序就应该有自己的传统的样式 而不是和Web类似
不过为了类似于web系统的框架页面
所以尝试了本示例)

示例涉及的窗体及用户控件：
FrameForm  框架窗体 包含两个SplitContainer
           SplitContainer1对窗体上下分隔
           SplitContainer2对SplitContainer1的Panel2进行左右分隔
TopUC      顶部用户控件
LeftMenuUC 左侧菜单用户控件 其中包含两个功能按钮button1 button2
ContentUC1 内容用户控件1 为button1所调用 将显示的框架的右区
ContentUC2 内容用户控件2 为button1所调用 将显示的框架的右区

FrameForm相关代码：

    partial class FrameForm
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.splitContainer1 = new System.Windows.Forms.SplitContainer();
            this.splitContainer2 = new System.Windows.Forms.SplitContainer();
            this.splitContainer1.Panel2.SuspendLayout();
            this.splitContainer1.SuspendLayout();
            this.splitContainer2.SuspendLayout();
            this.SuspendLayout();
            // 
            // splitContainer1
            // 
            this.splitContainer1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.splitContainer1.IsSplitterFixed = true;
            this.splitContainer1.Location = new System.Drawing.Point(0, 0);
            this.splitContainer1.Name = "splitContainer1";
            this.splitContainer1.Orientation = System.Windows.Forms.Orientation.Horizontal;
            // 
            // splitContainer1.Panel1
            // 
            this.splitContainer1.Panel1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Center;
            // 
            // splitContainer1.Panel2
            // 
            this.splitContainer1.Panel2.Controls.Add(this.splitContainer2);
            this.splitContainer1.Size = new System.Drawing.Size(947, 640);
            this.splitContainer1.SplitterDistance = 103;
            this.splitContainer1.TabIndex = 0;
            // 
            // splitContainer2
            // 
            this.splitContainer2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.splitContainer2.Dock = System.Windows.Forms.DockStyle.Fill;
            this.splitContainer2.Location = new System.Drawing.Point(0, 0);
            this.splitContainer2.Name = "splitContainer2";
            // 
            // splitContainer2.Panel2
            // 
            this.splitContainer2.Panel2.BackColor = System.Drawing.SystemColors.ButtonShadow;
            this.splitContainer2.Size = new System.Drawing.Size(947, 533);
            this.splitContainer2.SplitterDistance = 193;
            this.splitContainer2.TabIndex = 0;
            // 
            // FrameForm
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(947, 640);
            this.Controls.Add(this.splitContainer1);
            this.Name = "FrameForm";
            this.Text = "FrameForm";
            this.Load += new System.EventHandler(this.FrameForm_Load);
            this.splitContainer1.Panel2.ResumeLayout(false);
            this.splitContainer1.ResumeLayout(false);
            this.splitContainer2.ResumeLayout(false);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.SplitContainer splitContainer1;
        private System.Windows.Forms.SplitContainer splitContainer2;
    }

    public partial class FrameForm : Form
    {
        public FrameForm()
        {
            InitializeComponent();
        }

        private void FrameForm_Load(object sender, EventArgs e)
        {
            //加载TopForm
            TopUC ucTop = new TopUC();
            this.splitContainer1.Panel1.Controls.Add(ucTop);
            ucTop.Show();
            //加载LeftMenuForm
            LeftMenuUC ucLeftMenu = new LeftMenuUC();
            this.splitContainer2.Panel1.Controls.Add(ucLeftMenu);
            ucLeftMenu.Show();

            ////加载TopForm
            //TopForm frmTop = new TopForm();
            //frmTop.FormBorderStyle = FormBorderStyle.None;
            //frmTop.TopLevel = false;
            //this.splitContainer1.Panel1.Controls.Add(frmTop);
            //frmTop.Show();
            ////加载LeftMenuForm
            //LeftMenuForm frmLeftMenu = new LeftMenuForm();
            //frmLeftMenu.FormBorderStyle = FormBorderStyle.None;
            //frmLeftMenu.TopLevel = false;
            //this.splitContainer2.Panel1.Controls.Add(frmLeftMenu);
            //frmLeftMenu.Show();
        }
    }

LeftMenuUC 相关代码：

   public partial class LeftMenuUC : UserControl
    {
        public LeftMenuUC()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ContentUC1 ucContent1 = new ContentUC1();
            SplitContainer split = (SplitContainer)Parent.Parent;

            split.Panel2.Controls.Clear();
            split.Panel2.Controls.Add(ucContent1);

            //split.Panel2.Controls.Add(ucContent1);
            //split.Panel2.Controls.SetChildIndex(ucContent1, 0);
                        
            ucContent1.Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            ContentUC2 ucContent2 = new ContentUC2();
            SplitContainer split = (SplitContainer)Parent.Parent;

            split.Panel2.Controls.Clear();
            split.Panel2.Controls.Add(ucContent2);

            //split.Panel2.Controls.Add(ucContent2);
            //split.Panel2.Controls.SetChildIndex(ucContent2, 0);

            ucContent2.Show();
        }
    }