递归加载动态加载TreeView服务器控件（原创）

 

下面是数据库表截图

 在设计视图中拖一个TreeView控件

 

Default.aspx.cs  Code

/*
 *创建人：杜成刚
 *创建时间：01/19/2010 22:05:30
 *说明：
 *版权所有：夏楚枫 duchenggang.accp@163.com
 */
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Generic;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        {
            List<FileInfo> listFileInfo = GetFileInfo();
            for (int i = 0; i <listFileInfo.Count; i++)
            {
                TreeNode fatherNode = new TreeNode();
                if (listFileInfo[i].ParentId==0)
                {
                    fatherNode.Value = listFileInfo[i].FileId.ToString();
                    fatherNode.Text = listFileInfo[i].FileName.ToString();
                    fatherNode = GetTreeNode(fatherNode,listFileInfo);
                    this.TreeView1.Nodes.Add(fatherNode);
                }   
            }
        }
    }
   
    public static TreeNode GetTreeNode(TreeNode fatherNode, List<FileInfo> listFileInfo)
    {
        for (int i = 0; i < listFileInfo.Count; i++)
        {
            TreeNode childNode = new TreeNode();
            if (listFileInfo[i].ParentId.ToString()==fatherNode.Value)
            {
                childNode.Value = listFileInfo[i].FileId.ToString();
                childNode.Text = listFileInfo[i].FileName.ToString();
                childNode = GetTreeNode(childNode,listFileInfo);
                fatherNode.ChildNodes.Add(childNode);
            }
       
        }
        return fatherNode;
    }

    public static List<FileInfo> GetFileInfo()
    {
        string sql = "SELECT * FROM FileInfo";
        string connString = "Data Source=.;Initial Catalog=MyOffice; User Id=sa; PassWord=sa;";
        List<FileInfo> listFileInfo = new List<FileInfo>();
        SqlConnection con = new SqlConnection(connString);
        con.Open();
        SqlCommand cmd = new SqlCommand(sql,con);
        SqlDataReader reader =cmd.ExecuteReader();   
        if(reader.HasRows)
        {
            while (reader.Read())
            {
                FileInfo fileInfo = new FileInfo();
                fileInfo.FileId = (int)reader["FileId"];
                fileInfo.FileName = (string)reader["FileName"];
                fileInfo.FileType = (int)reader["FileType"];
                fileInfo.Remark = (string)reader["Remark"];
                fileInfo.FileOwner = (string)reader["FileOwner"];
                fileInfo.CreateDate = (DateTime)reader["CreateDate"];
                fileInfo.ParentId = (int)reader["ParentId"];
                fileInfo.FilePath = (string)reader["FilePath"];
                fileInfo.IfDelete = (int)reader["IfDelete"];
                listFileInfo.Add(fileInfo);
            }
            reader.Close();         
        }
        con.Close();
        return listFileInfo;
       
     }
}

FileInfo.cs 实体类。。。。

/*
 *创建人：杜成刚
 *创建时间：01/19/2010 22:05:30
 *说明：
 *版权所有：夏楚枫 duchenggang.accp@163.com
 */
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
/// <summary>
/// FileInfo 的摘要说明
/// </summary>

public class FileInfo
{

    private int fileId;
    private string fileName = String.Empty;
    private int fileType;
    private string remark = String.Empty;
    private string fileOwner = String.Empty;
    private DateTime createDate;
    private int parentId;
    private string filePath = String.Empty;
    private int ifDelete;

    public FileInfo() { }

    public int FileId
    {
        get { return this.fileId; }
        set { this.fileId = value; }
    }

    public string FileName
    {
        get { return this.fileName; }
        set { this.fileName = value; }
    }

    public int FileType
    {
        get { return this.fileType; }
        set { this.fileType = value; }
    }

    public string Remark
    {
        get { return this.remark; }
        set { this.remark = value; }
    }

    public string FileOwner
    {
        get { return this.fileOwner; }
        set { this.fileOwner = value; }
    }

    public DateTime CreateDate
    {
        get { return this.createDate; }
        set { this.createDate = value; }
    }

    public int ParentId
    {
        get { return this.parentId; }
        set { this.parentId = value; }
    }

    public string FilePath
    {
        get { return this.filePath; }
        set { this.filePath = value; }
    }

    public int IfDelete
    {
        get { return this.ifDelete; }
        set { this.ifDelete = value; }
    }

}