一 ：在前臺中添加js代碼
<script language='javascript' type='text/javascript'>
function client_OnTreeNodeChecked(evt) {
var obj = getCurrentNode(evt); //調用getCurrentNode（）方法
var treeNodeFound = false;
var checkedState;
if (obj.tagName == "INPUT" && obj.type == "checkbox") {
checkedState = obj.checked;
var curNode = getParentNode(obj);
changeNodeState(curNode, checkedState);
}
}
function getCurrentNode(evt) {
var obj;
if (window.event) obj = window.event.srcElement;
else obj = (evt ? evt : (window.event ? window.event : null)).target;
return obj;
}
function getParentNode(node) {
do {
node = node.parentNode;
}
while (node.tagName != "TABLE")
return node;
}
function changeNodeState(node, state) {
//change all the children
if (node.nextSibling != null && node.nextSibling.tagName == "DIV") {
var cbArr = node.nextSibling.getElementsByTagName("INPUT");
for (var i = 0; i < cbArr.length; i++) {
if (cbArr[i].type == "checkbox") cbArr[i].checked = state;
}
}
if (state) {
var parentArr = node.parentNode.previousSibling.getElementsByTagName("INPUT");
for (i = 0; i < parentArr.length; i++) {
if (parentArr[i].type == "checkbox") parentArr[i].checked = state;
}
}
}
</script>
二 ：用到下列服務器控件
<asp:Button ID="Button2" runat="server" Text="show" οnclick="Button2_Click" />
<asp:TreeView ID="TreeView1" runat="server" >
</asp:TreeView>
<asp:Button ID="Button1" runat="server" Text="輸出權限" οnclick="Button1_Click" />
三：後臺代碼
DataTable tblGrid = null;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TreeView1.Attributes.Add("onclick", "client_OnTreeNodeChecked(event)");
InittTable();
}
}
void InittTable()
{
//初始化Table
tblGrid = new DataTable();
tblGrid.Rows.Clear();
tblGrid.Columns.Clear();
tblGrid.Columns.Add("ID");
tblGrid.Columns.Add("Name");
tblGrid.Columns.Add("pID");
DataRow dr1 = tblGrid.NewRow();
dr1["ID"] = "1";
dr1["Name"] = "A";
dr1["pID"] = "0";
tblGrid.Rows.Add(dr1);
DataRow dr2 = tblGrid.NewRow();
dr2["ID"] = "2";
dr2["Name"] = "B";
dr2["pID"] = "0";
tblGrid.Rows.Add(dr2);
DataRow dr3 = tblGrid.NewRow();
dr3["ID"] = "3";
dr3["Name"] = "C";
dr3["pID"] = "0";
tblGrid.Rows.Add(dr3);
DataRow dr4 = tblGrid.NewRow();
dr4["ID"] = "4";
dr4["Name"] = "A1";
dr4["pID"] = "1";
tblGrid.Rows.Add(dr4);
DataRow dr5 = tblGrid.NewRow();
dr5["ID"] = "5";
dr5["Name"] = "A2";
dr5["pID"] = "1";
tblGrid.Rows.Add(dr5);
DataRow dr6 = tblGrid.NewRow();
dr6["ID"] = "6";
dr6["Name"] = "B1";
dr6["pID"] = "2";
tblGrid.Rows.Add(dr6);
DataRow dr7 = tblGrid.NewRow();
dr7["ID"] = "7";
dr7["Name"] = "B2";
dr7["pID"] = "2";
tblGrid.Rows.Add(dr7);
DataRow dr8 = tblGrid.NewRow();
dr8["ID"] = "8";
dr8["Name"] = "C1";
dr8["pID"] = "3";
tblGrid.Rows.Add(dr8);
DataRow dr9 = tblGrid.NewRow();
dr9["ID"] = "9";
dr9["Name"] = "C2";
dr9["pID"] = "3";
tblGrid.Rows.Add(dr9);
DataRow dr10 = tblGrid.NewRow();
dr10["ID"] = "10";
dr10["Name"] = "C3";
dr10["pID"] = "3";
tblGrid.Rows.Add(dr10);
DataRow dr11 = tblGrid.NewRow();
dr11["ID"] = "11";
dr11["Name"] = "D";
dr11["pID"] = "0";
tblGrid.Rows.Add(dr11);
TreeNode node = new TreeNode();
treeadd(tblGrid,0,node); //調用treeview
}
private void treeadd(DataTable dt, int Filterid, TreeNode node)
{
DataView subView = dt.DefaultView;
subView.RowFilter = "pID = " + Filterid; //獲得ID級別爲當前ID的
foreach (DataRowView item in subView)
{
//如果上級ID爲0就直接加載樹下面
if (Filterid == 0)
{
TreeNode treenodel = new TreeNode(); //創建一個節點
treenodel.Text = item["Name"].ToString();// 節點名稱
int id =Convert.ToInt32(item["ID"]);
treenodel.Value = id.ToString(); //節點值
treenodel.ShowCheckBox = true;
TreeView1.Nodes.Add(treenodel); //如果級別ID爲0就直接加到根節點
treeadd(dt, id, treenodel); //遞歸調用
}
else
{
//不爲0就加載傳進來的子節點下
TreeNode treenodel = new TreeNode();
treenodel.Text = item["Name"].ToString();
int id = Convert.ToInt32(item["ID"]);
treenodel.Value = id.ToString();
treenodel.Expanded = true; // 是否展開該節點
treenodel.ShowCheckBox = true;
node.ChildNodes.Add(treenodel); //把節點加入到當前節點下，
treeadd(dt, id, treenodel);
//ShowCheckBoxes="All"
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string qx = "";
foreach (TreeNode node in TreeView1.CheckedNodes)
{
if (node.Checked == true && node.Parent !=null)
{
qx += node.Value+",";
}
}
if (qx != string.Empty)
qx=qx.Substring(0, qx.Length - 1);
Response.Write(qx);
}
public void ShowQx(string qx)
{
string[] qvd = null;
if (!string.IsNullOrEmpty(qx))
{
qvd = qx.Split(',');
for (int i = 0; i < qvd.Length; i++)
{
foreach (TreeNode node in TreeView1.Nodes)
{
foreach (TreeNode n in node.ChildNodes)
{
if (n.Value == qvd[i])
{
n.Checked = true;
node.Checked = true;
break;
}
}
}
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{
ShowQx("4,7,8");
}