asp.net treeView dynamically add nodes, edit nodes, delete nodes

<%
/*
This is an ASP tutorial. NET TreeView Dynamic increase node, edit node, delete node function, the following our first example is to add a single function of the node, later is the specific example is OH TreeView dynamically add nodes, edit nodes, delete node functions.
*/
Display data modification Save in TreeView node Seletedindexchange
protected void Treeview1_selectednodechanged (object sender, EventArgs e)
{
if (This.treeview1.selectednode!= null)
{
String xtbh = This.treeview1.selectednode.value.trim ();
if (This.treeview1.selectednode.value.trim ()!= "0")
{
This.hd_xtbh.value = XTBH;
DataSet ds = This.getjgxx (XTBH, false);
if (Ds.tables[0].rows.count > 0)
{
Txtbmmc.text = ds.tables[0].rows[0]["JIGMC"].tostring ();
Txtbmbh.text = ds.tables[0].rows[0]["JIGBH"].tostring ();
}
}
Else
{
Txtbmbh.text = "";
Txtbmmc.text =treeview1.selectednode.text.trim ();
}
}
}

Instance method
using System;
Using System.Collections;
Using System.Configuration;
Using System.Data;
Using System.Linq;
Using System.Web;
Using System.Web.Security;
Using System.Web.UI;
Using System.Web.UI.HtmlControls;
Using System.Web.UI.WebControls;
Using System.web.ui.webcontrols.webparts;
Using System.Xml.Linq;
Using Mycontent.model;
Using MYCONTENT.BLL;
Using System.Collections.Generic;

public partial class Admin_dianpu_dianputypemanager:system.web.ui.page
{
protected void Page_Load (object sender, EventArgs e)
{
if (!ispostback)
{
if (request.querystring.count!= 0)
{
int id = Convert.ToInt32 (request.querystring["id"].tostring ());
leixing TP = Leixingmanager.getleixingbyid (ID);
This.txtname.text = Tp.tname;
}
Bindtypebig ();
Showtreeview ();
}
}
Fill DropDownList Industry Type
public void Bindtypebig ()
{
ilist<leixing> Comps tutorial = Leixingmanager.getallleixingbytid (0);
This.ddlalltype.items.add ("Please choose");
foreach (Leixing compt in comps)
{
ListItem item = new ListItem ();
Item.value = Compt.tid.tostring ();
Item.text = Compt.tname;
This.ddlalltype.items.add (item);
}
}
Fill Treevview
public void Showtreeview ()
{
ilist<leixing> lists = Leixingmanager.getallleixingbytid (0);
foreach (leixing item in lists)
{
Create parent Node
TreeNode father = This.createtreenode (Item.tname, item.tid.tostring (), "dianputypemanager.aspx?id=" + Item.tid, " Images/opentree.gif ");
Createchildnode (Item.tid, Father);
This.tvproducttype.nodes.add (father);
}
}
Creating child nodes
public void Createchildnode (int typeid, TreeNode Fathernode)
{
ilist<leixing> lists = Leixingmanager.getallleixingbytid (typeid);
foreach (leixing item in lists)
{
TreeNode Child = This.createtreenode (Item.tname, item.tid.tostring (), "dianputypemanager.aspx?id=" + Item.tid, "images" /opentree.gif ");
Createchildnode (Item.tid, child);
Addtree (Fathernode, child);
}
}
The handle node joins the parent node
private void Addtree (TreeNode father, TreeNode Child)
{
Father.childnodes.add (child);
}
To create a node for a tree
Public TreeNode Createtreenode (string name, string id, string URL, string img)
{
TreeNode node = new TreeNode ();
Node.text = name;
Node.value = ID;
Node.navigateurl = URL;
Node.imageurl = img;
return node;
}
protected void Btnupdate_click (object sender, EventArgs e)
{
if (This.ddlalltype.text = "Please select")
{
if (This.txtname.text.trim () = "")
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Modify, type name cannot be empty!") '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Modify, type name cannot be empty!) '); location= ' dianputypemanager.aspx ';</script> ');
}
else if (This.txtname.text.trim ()!= "")
{
int id = Convert.ToInt32 (request.querystring["id"].tostring ());//Get Selected Node ID
if (Leixingmanager.updateleixingbynameandid (This.txtname.text.trim (). ToString (), id) > 0)
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "Alert (' modified successfully! '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Modified successfully! '); location= ' dianputypemanager.aspx ';</script> ');
}
Else
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Modify failed! '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Revision failed!) '); location= ' dianputypemanager.aspx ';</script> ');
}
}
}
Else
{
if (This.txtname.text.trim () = "")
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Modify, type name cannot be empty!") '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Modify, type name cannot be empty!) '); location= ' dianputypemanager.aspx ';</script> ');
}
else if (This.txtname.text.trim ()!= "")
{
int id = Convert.ToInt32 (request.querystring["id"].tostring ());//Get Selected Node ID
int parentid = Convert.ToInt32 (this.ddlalltype.selectedvalue.tostring ());
if (Leixingmanager.updateleixingbyparentidandid (ParentID, id) > 0)
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "Alert (' modified successfully '), window.location= ' Dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Modified successfully! '); location= ' dianputypemanager.aspx ';</script> ');
}
Else
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Modify failed! '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write ("<script> Alert" (' Revision failed!) '); location= ' dianputypemanager.aspx ';</script> ');
}
}
}

}
protected void Btndelete_click (object sender, EventArgs e)
{
if (request.querystring["id"].tostring () = null)
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Delete: Please select Delete Item!") '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write (' <script> alert (' Delete: Please select Delete Item! '); location= ' dianputypemanager.aspx ';</script> ');
}
Else
{
int id = Convert.ToInt32 (request.querystring["id"].tostring ());//Get Selected Node ID
if (Leixingmanager.getallleixingbytid (ID). Count!= 0)
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' See RELATED links, then delete '), window.location= ' Dianputypemanager.aspx ' ", true);
Response.Write (' Please check the relevant links, then delete '); location= ' dianputypemanager.aspx ';</script> ');
}
Else
{
if (Leixingmanager.deleteleixingbyid (ID) > 0)
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Delete succeeded! '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write (' <script> alert (' Delete succeeded! '); location= ' dianputypemanager.aspx ';</script> ');
}
Else
{
Scriptmanager.registerclientscriptblock (page, This.gettype (), "", "alert (' Delete failed! '), window.location= ' dianputypemanager.aspx ' ", true);
Response.Write (' <script> alert (' Delete failed! '); location= ' dianputypemanager.aspx ';</script> ');
}
}
}

}

}

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