看到迅雷配置窗体，Alcohol 120%的配置也有这样的窗体，就连vs里面的这种布局的窗体都很多，不知道叫什么名字（各位大牛不要笑我啊），我暂且叫它Optionform或者SettingForm，感觉这种窗体还不不错，我有点想做一个才冲动了，我先来试试看：
在网上东找西找发现左边是一个treeview右边是一个panel，它的原理是点击左边树节点右边显示相关内容到panel里面，但是这里是显示的另外的窗体（我也是头次看到这样用窗体）
Demo1 OptionForm1：
我先建立了一个MainForm放了两个button这里有两种方式做的OptionForm，我为了让例子好看，就分别用一个按钮来显示一个OptionForm，好了现在新建一个OptionForm1
OK,这个OptionForm1左边放了一个treeview右边放了一个panel，为了好看我把迅雷上面的图片截了下来放到控件里面去了；然后新建了3个form：form1，form2，form3，我只做了迅雷配置里面的千3个标签，具体代码如下：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace Demo1
{
public partial class OptionForm1 : Form
{ public OptionForm1() { InitializeComponent();
} protected override void OnLoad(EventArgs e) { treeView1.SelectedNode = treeView1.Nodes[0]; } private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { this.treeView1.SelectedNode.SelectedImageIndex = e.Node.ImageIndex;//保持图标不变 panel1.Controls.Clear();//清除panel1内控件 switch (e.Node.Name) { case "N0": Form1 form1 = new Form1(); label1.Text = "常规配置可设定迅雷的默认行为"; ShowForm(form1); break; case "N1": Form2 form2 = new Form2(); label1.Text = "类别及目录选项可以帮助你方便的管理和下载"; ShowForm(form2); break; case "N2": Form3 form3 = new Form3(); label1.Text = "任务默认属性配置可以让您设置新建任务的默认值"; ShowForm(form3); break; } } public void ShowForm(Form leftForm) { leftForm.FormBorderStyle = FormBorderStyle.None; leftForm.TopLevel = false; panel1.Controls.Add(leftForm); leftForm.Show(); } private void button1_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.OK; //TODO: this.Close(); } private void button2_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.Cancel; //TODO: this.Close(); } }
}这样只是一种显示方法，有个缺点就是如果有N个窗体显示在panel里面的话，我要new N次；
Demo1 OptionForm2：
在朋友的帮助下利用匿名委托（不知道说得对不对）用了另外一种方法实现：具体原理是：将第一次new的form放到list里面以后如果list里面存在这样的窗体就直接show如果没有则将这个窗体添加到list里面并show：代码如下：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace Demo1{ public partial class OptionForm2 : Form { public OptionForm2() { InitializeComponent(); }
protected override void OnLoad(EventArgs e) { treeView1.SelectedNode = treeView1.Nodes[0]; } List<KeyValuePair<string, Form>> lstForms = new List<KeyValuePair<string, Form>>(); protected void LoadForm(string formName) { panel1.Controls.Clear(); Predicate<KeyValuePair<string, Form>> find = delegate(KeyValuePair<string, Form> oneForm) { return oneForm.Key == formName; }; KeyValuePair<string, Form> findForm = lstForms.Find(find); if (findForm.Key == null) { Form form = (Activator.CreateInstance(Type.GetType("Demo1." + formName)) as Form); lstForms.Add(new KeyValuePair<string, Form>(formName, form)); form.Name = formName; form.FormBorderStyle = FormBorderStyle.None; form.TopLevel = false; panel1.Controls.Add(form); form.Show(); } else { panel1.Controls.Add(findForm.Value); } } private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { this.treeView1.SelectedNode.SelectedImageIndex = e.Node.ImageIndex;//保持图标不变 panel1.Controls.Clear();//清除panel1内控件 switch (e.Node.Name) { case "N0": label1.Text = "常规配置可设定迅雷的默认行为"; LoadForm("Form1"); break; case "N1": label1.Text = "类别及目录选项可以帮助你方便的管理和下载"; LoadForm("Form2"); break; case "N2": label1.Text = "任务默认属性配置可以让您设置新建任务的默认值"; LoadForm("Form3"); break; } } private void button1_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.OK; //TODO: for (int i = 0; i < lstForms.Count; i++) { switch (lstForms[i].Key) { case "Form1": ((Form1)lstForms[i].Value).SaveSetting(); break; case "Form2": ((Form2)lstForms[i].Value).SaveSetting(); break; case "Form3": ((Form3)lstForms[i].Value).SaveSetting(); break; } } this.Close(); } private void button2_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.Cancel; //TODO: this.Close(); } }}这里加了保存的功能：在每个子窗体里面创建一个SaveSetting方法，然后点击保存时查找list里面的窗体，依次保存。
结果如下：
但是这里又有个问题：就是要转换成特定的窗体才能调用相应的保存设置的方法，于是又想到如果就调用依次save方法该多好啊，也许你已经想到用继承，不错，就是继承。
我是这样做的新建一个父窗体Base:Form里面有一个虚方法
public virtual void SaveSetting()
{ }
什么也没做，然后新建的 form1,form2,form3就继承baseform当然每个form里面要实现这个虚方法；好了看下代码
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace Demo2{ public partial class Form1 : Demo2.BaseForm { public Form1() { InitializeComponent(); } protected override void OnLoad(EventArgs e) { checkBox1.Checked = Properties.Settings.Default.F1Check1; checkBox2.Checked = Properties.Settings.Default.F1Check2; checkBox3.Checked = Properties.Settings.Default.F1Check3; numericUpDown1.Value = Properties.Settings.Default.F1Num1; numericUpDown2.Value = Properties.Settings.Default.F1Num2; } public override void SaveSetting() { Properties.Settings.Default.F1Check1 = checkBox1.Checked; Properties.Settings.Default.F1Check2 = checkBox2.Checked; Properties.Settings.Default.F1Check3 = checkBox3.Checked; Properties.Settings.Default.F1Num1 = numericUpDown1.Value; Properties.Settings.Default.F1Num2 = numericUpDown2.Value; Properties.Settings.Default.Save(); } }}当然optionform代码也要变下：
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace Demo2{ public partial class OptionForm : Form { public OptionForm() { InitializeComponent(); } protected override void OnLoad(EventArgs e) { treeView1.SelectedNode = treeView1.Nodes[0]; } List<KeyValuePair<string, BaseForm>> lstForms = new List<KeyValuePair<string, BaseForm>>(); protected void LoadForm(string formName) { panel1.Controls.Clear(); Predicate<KeyValuePair<string, BaseForm>> find = delegate(KeyValuePair<string, BaseForm> oneForm) { return oneForm.Key == formName; }; KeyValuePair<string, BaseForm> findForm = lstForms.Find(find); if (findForm.Key == null) { BaseForm form = (Activator.CreateInstance(Type.GetType("Demo2." + formName)) as BaseForm); lstForms.Add(new KeyValuePair<string, BaseForm>(formName, form)); form.Name = formName; form.FormBorderStyle = FormBorderStyle.None; form.TopLevel = false; panel1.Controls.Add(form); form.Show(); } else { panel1.Controls.Add(findForm.Value); } } private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { this.treeView1.SelectedNode.SelectedImageIndex = e.Node.ImageIndex;//保持图标不变 panel1.Controls.Clear();//清除panel1内控件 switch (e.Node.Name) { case "N0": label1.Text = "常规配置可设定迅雷的默认行为"; LoadForm("Form1"); break; case "N1": label1.Text = "类别及目录选项可以帮助你方便的管理和下载"; LoadForm("Form2"); break; case "N2": label1.Text = "任务默认属性配置可以让您设置新建任务的默认值"; LoadForm("Form3"); break; } } private void button1_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.OK; //TODO: for (int i = 0; i < lstForms.Count; i++) { lstForms[i].Value.SaveSetting(); } this.Close(); } private void button2_Click(object sender, EventArgs e) { for (int i = 0; i < lstForms.Count; i++) { lstForms[i].Value.SaveSetting(); } } private void button3_Click(object sender, EventArgs e) { this.DialogResult = DialogResult.Cancel; //TODO: this.Close(); } }}