今天作個分析html代碼，然后再批量下載的程序，其中用到 Splitter （分割條），編譯程序后，發現分割條不起作用，拖動分割條的時候，相鄰的兩個 Panel 沒有變換大小。為這個幾乎花了一天時間，也沒找到原因。包括到其他機子上測試。
后來，再次作一個完全獨立的測試項目，發現 Splitter 的使用有個算是 bug 的問題，如果你首先放兩個 Panel ，然后再放一個 Splitter 。（注意這時候的次序）就會產生我上面出現的問題。這時候代碼中的 InitializeComponent 函數部分代碼如下：
private void InitializeComponent()
{
//
// ... 其他代碼
//
this.panel1 = new System.Windows.Forms.Panel();
this.panel2 = new System.Windows.Forms.Panel();
this.splitter1 = new System.Windows.Forms.Splitter();
this.panel2.SuspendLayout();
this.SuspendLayout();
//
// ... 其他代碼
//
//
// panel1
//
this.panel1.Dock = System.Windows.Forms.DockStyle.Left;
this.panel1.Location = new System.Drawing.Point(0, 42);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(120, 209);
this.panel1.TabIndex = 6;
this.panel1.Resize += new System.EventHandler(this.panel2_Resize);
this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel2_Paint);
//
// panel2
//
this.panel2.Controls.Add(this.splitter1);
this.panel2.Dock = System.Windows.Forms.DockStyle.Fill;
this.panel2.Location = new System.Drawing.Point(120, 42);
this.panel2.Name = "panel2";
this.panel2.Size = new System.Drawing.Size(328, 209);
this.panel2.TabIndex = 7;
this.panel2.Resize += new System.EventHandler(this.panel2_Resize);
this.panel2.Paint += new System.Windows.Forms.PaintEventHandler(this.panel2_Paint);
//
// splitter1
//
this.splitter1.BackColor = System.Drawing.SystemColors.Desktop;
this.splitter1.Location = new System.Drawing.Point(0, 0);
this.splitter1.Name = "splitter1";
this.splitter1.Size = new System.Drawing.Size(3, 209);
this.splitter1.TabIndex = 0;
this.splitter1.TabStop = false;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(448, 273);
this.Controls.Add(this.panel2);
this.Controls.Add(this.panel1);
this.Controls.Add(this.toolBar1);
this.Controls.Add(this.statusBar1);
this.Name = "Form1";
this.Text = "站點下載工具 2003年9月21日";
this.panel2.ResumeLayout(false);
this.ResumeLayout(false);
}
注意：這時候的代碼中的順序。這時候，程序的執行是有問題的。分隔條會不起作用。
但是如果你把這三個控件放入順序修改為下面的順序就沒有問題了。
1、放入一個 Panel 比如：panel1 然后設置他的 Dock 屬性為：Left;
2、放入一個 Splitter 比如：splitter1 設置它的背景顏色為一個特殊的顏色，便于看執行效果；
3、放入一個 Panel 比如：panel2 然后設置他的 Dock 屬性為：Fill;
4、編譯執行程序，這時候就沒有問題了。
這時候正確的代碼應該是：（ InitializeComponent 函數部分）
private void InitializeComponent()
{
//
// ... 其他代碼
//
this.panel1 = new System.Windows.Forms.Panel();
this.panel2 = new System.Windows.Forms.Panel();
this.splitter1 = new System.Windows.Forms.Splitter();
this.panel2.SuspendLayout();
this.SuspendLayout();
//
// ... 其他代碼
//
//
// panel1
//
this.panel1.Dock = System.Windows.Forms.DockStyle.Left;
this.panel1.Location = new System.Drawing.Point(0, 42);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(200, 209);
this.panel1.TabIndex = 6;
//
// panel2
//
this.panel2.Controls.Add(this.splitter1);
this.panel2.Dock = System.Windows.Forms.DockStyle.Fill;
this.panel2.Location = new System.Drawing.Point(200, 42);
this.panel2.Name = "panel2";
this.panel2.Size = new System.Drawing.Size(248, 209);
this.panel2.TabIndex = 7;
//
// splitter1
//
this.splitter1.BackColor = System.Drawing.SystemColors.Desktop;
this.splitter1.Location = new System.Drawing.Point(0, 0);
this.splitter1.Name = "splitter1";
this.splitter1.Size = new System.Drawing.Size(3, 209);
this.splitter1.TabIndex = 0;
this.splitter1.TabStop = false;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(448, 273);
this.Controls.Add(this.panel2);
this.Controls.Add(this.panel1);
this.Controls.Add(this.toolBar1);
this.Controls.Add(this.statusBar1);
this.Menu = this.mainMenu1;
this.Name = "Form1";
this.Text = "站點下載工具 2003年9月21日";
this.Load += new System.EventHandler(this.Form1_Load);
this.panel2.ResumeLayout(false);
this.ResumeLayout(false);
}
