treeview(winform)里实现父选子全选,某一子选所有父选
长话短说,上代码:
绑定treeview
private void GetMenuStripItemName(ToolStripItemCollection items, TreeNodeCollection treeNodeCollection)
{
foreach (ToolStripItem item in items)
{
if (item is System.Windows.Forms.ToolStripMenuItem)
{
TreeNode tempTreeNode = new TreeNode(item.Text);
tempTreeNode.Checked = IsHaveRight(item.Text);
treeNodeCollection.Add(tempTreeNode);
this.GetMenuStripItemName(((ToolStripMenuItem)item).DropDownItems, tempTreeNode.Nodes);
}
}
}
//得到用户权限
private bool IsHaveRight(string MenuText)
{
//foreach (User.UserRightRow row in user.UserRight)
//{
// if (row.UserRightMenu == MenuText)
// {
// if (row.UserHaveRight == true)
// {
// return true;
// }
// else
// {
// return false;
// }
// }
//}
return false;
}
得到主form的菜单,注意,要设置主form的MainMenuStrip
private void PopedomForm_Load(object sender, EventArgs e)
{
MenuStrip menu = this.ParentForm.MainMenuStrip;
GetMenuStripItemName(menu.Items, treeView1.Nodes);
}
在选中事件中
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Action != TreeViewAction.Unknown)
{
CheckAllChildNodes(e.Node, e.Node.Checked);
//选中父节点
bool bol = true;
if (e.Node.Parent != null)
{
//for (int i = 0; i < e.Node.Parent.Nodes.Count; i++)
//{
// if (!e.Node.Parent.Nodes[i].Checked)
// bol = false;
//}
///修改当某一子节点选中时，所有父节点选中。当子节点全取消选中时，所有父节点选中
bol = e.Node.Checked;
if (bol == true)
{ }
else
{
for (int i = 0; i < e.Node.Parent.Nodes.Count; i++)
{
if (e.Node.Parent.Nodes[i].Checked)
{
bol = true;
break;
}
}
}
TreeNode tn = e.Node;
while (tn.Parent != null)
{
tn = tn.Parent;
tn.Checked = bol;
}
tn.Checked = bol;
}
}
}
//选中子节点
public void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
{
foreach (TreeNode node in treeNode.Nodes)
{
node.Checked = nodeChecked;
if (node.Nodes.Count > 0)
{
this.CheckAllChildNodes(node, nodeChecked);
}
}
}
//法二
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WinFormTest
{
public partial class Manage : Form
{
public Manage()
{
InitializeComponent();
}
private void Manage_Load(object sender, EventArgs e)
{
DataSet ds = new DataSet();
System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["connString1"].ToString());
System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter("Select * from TreeTemp", conn);
da.Fill(ds);
buildTree(this.treeView1, ds);
}
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (e.Node.Nodes.Count == 0)
{
MessageBox.Show(e.Node.Name);
}
}
public bool buildTree(TreeView TreeViewName, DataSet ds)
{
treeView1.Nodes.Clear();
//如果为最高级，则修改以适应ds的relation中的关系
foreach (DataRow dbRow in ds.Tables[0].Rows)
{
if (dbRow["ParentMenu"].ToString() == "0")
{
dbRow["ParentMenu"] = DBNull.Value;
}
}
ds.Relations.Add("NodeRelation", ds.Tables[0].Columns["ChildMenuID"], ds.Tables[0].Columns["ParentMenu"]);
//循环绑定父node
foreach (DataRow dbRow in ds.Tables[0].Rows)
{
if (dbRow.IsNull("ParentMenu"))
{
TreeNode newNode = CreateNode(dbRow["ChildMenu"].ToString(), dbRow["NavigateUrl"].ToString());
TreeViewName.Nodes.Add(newNode);
PopulateSubTree(dbRow, newNode);//绑定此父节点的所有子节点
}
}
return true;
}
private void PopulateSubTree(DataRow dbRow, TreeNode node)
{
foreach (DataRow childRow in dbRow.GetChildRows("NodeRelation"))
{
TreeNode childNode = CreateNode(childRow["ChildMenu"].ToString(), childRow["NavigateUrl"].ToString());
node.Nodes.Add(childNode);
PopulateSubTree(childRow, childNode);
}
}
private TreeNode CreateNode(string text, string NavigateUrl)
{
TreeNode node = new TreeNode();
/*
* 其他node属性自己添加，现在只添加两个
node.ID;
node.ImageUrl;
node.Target;
node.Expanded;
node.CheckBox
* */
node.Text = text;
node.Name = NavigateUrl;
return node;
}
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(this.treeView1.Nodes.Count.ToString());
//Form1 f1 = new Form1();
//f1.ShowDialog();
}
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Action != TreeViewAction.Unknown)
{
CheckAllChildNodes(e.Node, e.Node.Checked);
CheckAllParentNodes(e.Node, e.Node.Checked);
}
}
public void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
{
foreach (TreeNode node in treeNode.Nodes)
{
node.Checked = nodeChecked;
if (node.Nodes.Count > 0)
{
this.CheckAllChildNodes(node, nodeChecked);
}
}
}
public void CheckAllParentNodes(TreeNode td, bool check)
{
if (td.Parent != null)
{
td.Parent.Checked = HasChildChecked(td.Parent);
CheckAllParentNodes(td.Parent, check);
}
}
public bool HasChildChecked(TreeNode td)
{
foreach (TreeNode treenode in td.Nodes)
{
if (treenode.Checked)
{
return true;
}
HasChildChecked(treenode);
}
return false;
}
}
}
aaaaaa
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