哪位有c＃写的treeview的例子，发给我一份。

to luqingang(小路)
我已下载了Internet Web Controlers的控件，但不知道怎么用。
需要有个c＃写的例子

一般采用递归方法注意把web.config里的utf-8换成gb2312

to xhan2000(popeye.net)
你在说什么啊？

不知道用treeview做bbs树型显示如何，请把例子给我一份，谢谢！
[email protected]

//别忘了注册组件及引用using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;namespace Doc
{
/// <summary>
/// Nevigation 的摘要说明。
/// </summary>
public class Nevigation : System.Web.UI.Page
{
protected System.Web.UI.WebControls.LinkButton lbDel;
protected System.Web.UI.WebControls.LinkButton lbAdd;
protected Microsoft.Web.UI.WebControls.TreeView TreeView1;
protected System.Web.UI.WebControls.LinkButton lbEdit;
protected System.Web.UI.WebControls.HyperLink HyperLink1;
protected System.Web.UI.WebControls.Label Label1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
/*if (Request.IsAuthenticated == false)
{
Response.Redirect("~/Login.aspx");
}*/ if(!IsPostBack)
{
Doc.Components.DatabaseAccess access = new Doc.Components.DatabaseAccess();

DataSet ds = access.GetDataSet("select * from Folders order by FatherID");
ds.Relations.Add("RelationFolder2Folder",ds.Tables[0].Columns["FolderID"],ds.Tables[0].Columns["FatherID"]);
System.Data.DataRelation dr = ds.Relations["RelationFolder2Folder"];
foreach(DataRow row in ds.Tables[0].Rows)
{
if((row["FatherID"] == null)||(row["FatherID"].ToString() == ""))
{
Microsoft.Web.UI.WebControls.TreeNode root = new Microsoft.Web.UI.WebControls.TreeNode();
root.Text = row["FolderName"].ToString();
root.ImageUrl = "images/root.GIF";
root.SelectedImageUrl = "images/root.GIF";
root.NodeData = row["FolderID"].ToString();
root.NavigateUrl = "Files/FileList.aspx?FolderID="+row["FolderID"].ToString();
root.Expanded = true;
//调用递归
WalkChildNodes(root, row, dr);
this.TreeView1.Nodes.Add(root);
}
}
}

} private void WalkChildNodes(Microsoft.Web.UI.WebControls.TreeNode FatherNode, DataRow FatherRow, DataRelation dr)
{
foreach(DataRow row in FatherRow.GetChildRows(dr))
{
Microsoft.Web.UI.WebControls.TreeNode node = new Microsoft.Web.UI.WebControls.TreeNode();
node.Text = row["FolderName"].ToString();
node.ImageUrl = "images/folder.GIF";
node.SelectedImageUrl = "images/folder.GIF";
node.NodeData = row["FolderID"].ToString();
node.NavigateUrl = "Files/FileList.aspx?FolderID="+row["FolderID"].ToString();
FatherNode.Nodes.Add(node);
WalkChildNodes(node, row, dr);
}
} #region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{ this.Load += new System.EventHandler(this.Page_Load); }
#endregion
}
}

to sumanden(心头慌，打中张)
我没有收到你发给我的东西，再发一次好吗？

希望我的代码，也能给你一点帮忙：）
初始化：
private void InitTV(int intVOrderLen)
{
SqlDataReader dr;
SqlCommand myCommand;
string strSel = "select * from bas_infokw where Len(ViewOrder)=3 order by vieworder";
myCommand = new SqlCommand (strSel, myConnection);
dr=myCommand.ExecuteReader();
while (dr.Read ())
{
TreeNode pNode=new TreeNode ();
pNode.Text =dr["kwname"].ToString ();
pNode.ID =dr["vieworder"].ToString ();

TreeView1.Nodes .Add (pNode);

}
dr.Close (); }选择节点改变事件：
private void TreeView1_SelectedIndexChange(object sender, Microsoft.Web.UI.WebControls.TreeViewSelectEventArgs e)
{
TreeNode NewNode=TreeView1.GetNodeFromIndex (TreeView1.SelectedNodeIndex);
string strNodeId=NewNode.ID .ToString ();
SqlDataReader dr;
SqlCommand myCommand;
int intVOrderLen=strNodeId.Length+3;
string strSel = "select * from bas_infokw where len(vieworder)="+intVOrderLen+" and vieworder like '%"+strNodeId+"__%' order by vieworder";
myCommand = new SqlCommand (strSel, myConnection);
dr=myCommand.ExecuteReader();
NewNode.Nodes .Clear();
while (dr.Read ())
{
TreeNode pNode=new TreeNode ();
pNode.Text =dr["kwname"].ToString ();
pNode.ID =dr["vieworder"].ToString ();
NewNode.Nodes.Add (pNode);

}
dr.Close ();
TreeView1.GetNodeFromIndex (TreeView1.SelectedNodeIndex).Expanded=true;

}

不知道什么是TreeView,是不是就是树形菜单啊，如果是的，代码给我一份好么？我找这个找了很久了
[email protected]，谢谢

能给我一份吗我也想要！[email protected]

http://www.csdn.net/expert/topic/454/454715.xml?temp=.54414这里有treeview的案例哦。------------------------
欢迎访问
www.xmyasi.com/dvbbs
这里有crm的各种理论和探讨，
当然少不了dotnet的应用啦

void  creat_node(string  name,Microsoft.Web.UI.WebControls.TreeNode  t1,string  number)
{
//定义一个新的结点 Microsoft.Web.UI.WebControls.TreeNode  t2=new  Microsoft.Web.UI.WebControls.TreeNode();
t2.ID=number;
t2.Text=name;
//判断是否为根结点
TreeView1.ExpandedImageUrl="images/Depart03.bmp";
if(t1.ID.Trim()=="###")
{
TreeView1.Nodes.Add(t2);
t2.ImageUrl="images/Depart01.bmp";
}
else
{
t1.Nodes.Add(t2);
                   t2.ImageUrl="images/Depart01.bmp";
t1.ImageUrl="images/Depart02.bmp";
}
     //取得这个结点的所有子结点，利用递归自动生成
string mySelectQuery = "SELECT ParentID, ID,Name FROM table1 where  ParentID='" + number +"'";//ParentID为父节点，ID为节点，Name为显示节点的名称
string MyConnString="provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Server.MapPath(".")+"/dt/mydata.mdb";
OleDbConnection myConnection = new OleDbConnection(MyConnString);
OleDbCommand myCommand = new OleDbCommand(mySelectQuery,myConnection);
myConnection.Open();
OleDbDataReader myReader;
myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
creat_node(myReader.GetString(2),t2,myReader.GetString(1));

}
myReader.Close();
myConnection.Close();

} private void CreateProviderTreeBtn_Click(object sender, System.EventArgs e)
{
Microsoft.Web.UI.WebControls.TreeNode  t1=new  Microsoft.Web.UI.WebControls.TreeNode();
creat_node("",t1,"###");//根节点的ID为###

调试易

哪位有c＃写的treeview的例子，发给我一份。

解决方案 »