treeview和listview的用法

public partial class Form1 : Form
{
private School school;
public Form1()
{
InitializeComponent();
Office o1 = new Office("计算机基础","王军","杨晓勇","何平","姜涛");
Office o2 = new Office("软件工程", "马建国", "陈军", "刘晓燕");
Office o3 = new Office("信息安全", "冯尧", "李建军", "张涛");
Department d1=new Department("计算机",o1,o2,o3);
Office o4 = new Office("自动控制", "吴自力", "陈锋", "薛小龙");
Office o5 = new Office("工业设计", "吴淑华", "方坤", "何丽", "蔡聪");
Department d2=new Department("机电工程",o4,o5);
Office o6 = new Office("信息管理", "赵民", "盛晓楠", "徐小平");
Office o7 = new Office("工商管理", "张敏", "李玲", "吕倩", "高健");
Department d3=new Department("经济管理",o6,o7);
school = new School("科大", d1, d2, d3);

TreeNode root = treeView1.Nodes.Add(school.ToString());
foreach(Department d in school.departments )
{
TreeNode node = root.Nodes.Add(d.ToString());
foreach (Office o in d.offices)
{
node.Nodes.Add(o.ToString());
}
}
listView1.Columns.Add("姓名");
listView1.Columns.Add("电话");
listView1.Columns.Add("电子邮件");

}

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
listView1.Items.Clear();
if (e.Node.Level == 0)
{
foreach (Department d in school.departments)
{
listView1.Items.Add(d.ToString(),0);
}
}
else if (e.Node.Level == 1)
{
foreach (Office o in school.departments[e.Node.Index].offices)
{
listView1.Items.Add(o.ToString(), 1);
}
}
else if (e.Node.Level == 2)
{
foreach (string s in school.departments[e.Node.Parent.Index].offices[e.Node.Index].teachers)
{
listView1.Items.Add(s.ToString(), 2);
}
}
}
}

public class School
{
public School(string name, params Department[] departments)
{
this.Name = name;
this.departments = new List<Department>(departments);
}
public string Name { get; set; }
public List<Department> departments { get; set; }
public override string ToString()
{
return Name;
}
}

public class Department
{
public string Name { get; set; }
public List<Office> offices { get; set; }
public Department(string name, params Office[] offices)
{
this.Name = name;

this.offices = new List<Office>(offices);
}
public override string ToString()
{
return Name + "系";
}
}

public class Office
{
public string Name { get; set; }
public List<string> teachers { get; set; }
public Office(string name, params string[] teachers)
{
this.Name = name;
this.teachers = new List<string>(teachers);
}
public override string ToString()
{
return Name + "教研室";
}
}
运行后截图：