在窗体中添加一个TreeView控件,设置CheckBox属性为True,绑定数据
Archive jkj = new Archive();//自定义类
public void Bind()
{
DataTable rol = jkj.GetDataTable("select rolesid,description from roles","roles");
this.listBox1.DataSource = rol;
this.listBox1.DisplayMember = "description";
this.listBox1.ValueMember = "rolesid";
this.treeView1.Nodes.Clear();
DataTable mod = jkj.GetDataTable("select modelno,modelename from modelname", "modelname");
foreach (DataRow mrow in mod.Rows)
{
TreeNode mtn = new TreeNode();
mtn.Text = mrow["modelename"].ToString();
mtn.Tag = mrow["modelno"].ToString();
this.treeView1.Nodes.Add(mtn);
string sql = "select funcno,cname from funcname where modelno=" + int.Parse(mtn.Tag.ToString())+" order by funcno";
DataTable fun = jkj.GetDataTable(sql, "funcname");
foreach (DataRow frow in fun.Rows)
{
TreeNode ftn = new TreeNode();
ftn.Text = frow["cname"].ToString();
ftn.Tag = frow["funcno"].ToString();
mtn.Nodes.Add(ftn);
}
}
this.treeView1.ExpandAll();
}
private void Form1_Load(object sender, EventArgs e)
{
Bind();//绑定数据源
}
// 在TreeView控件的AfterCheck事件中加入:
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
TreeView tree = (TreeView)sender;
tree.AfterCheck -= new TreeViewEventHandler(this.treeView1_AfterCheck);
//折叠其他同级节点
TreeNode parentNode = e.Node.Parent;
if (parentNode != null)
{
foreach (TreeNode tn in parentNode.Nodes)
{
if (tn != e.Node)
tn.Collapse();
}
}
else
{
foreach (TreeNode tn in tree.Nodes)
{
if (tn != e.Node)
tn.Collapse();
}
}
//标记该节点的所有子节点的选中状态与该节点一致
foreach (TreeNode tn in e.Node.Nodes)
tn.Checked = e.Node.Checked;
//if (e.Node.Checked)
e.Node.ExpandAll(); //如果该节点为选中,展开该节点
//else
// e.Node.Toggle(); //如果该节点没有选中:如果该节点处于折叠状态,则展开该节点,否则折叠它
//如果当前节点的父节点下的所有子节点都没有选中,去掉父节点的选中
if (e.Node.Checked == false && e.Node.Parent != null)
{
bool found = false; //父节点的子节点中至少有一个节点被选中,则found = true
foreach (TreeNode tn in e.Node.Parent.Nodes)
{
if (tn.Checked == true)
{
found = true;
break;
}
}
if (found == false) //没有找到任何被选中的子节点
{
e.Node.Parent.Checked = false;
e.Node.Parent.Collapse();
}
}
tree.AfterCheck += new TreeViewEventHandler(this.treeView1_AfterCheck);
this.treeView1.FullRowSelect = true;
////下面的代码作用是:选取父节点后,选取其所有子节点。
//foreach (TreeNode tn in e.Node.Nodes)
//{
// tn.Checked = e.Node.Checked;
//}
}