selfile.ascx.cs

如果不使用IIS,请先运行 XSP.exe,待提示已侦听 8080端口后

using System;
using System.Collections;
using System.Configuration;
using System.Data;
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.IO;
//using System.Runtime.Serialization.Json;

public partial class controls_selfile : System.Web.UI.UserControl,ICallbackEventHandler 
{
    public controls_selfile()
    {
        _rootPath = "~/Portals";
    }

    protected void Page_Init(object sender, EventArgs e)
    {
        
        string root = Server.MapPath(_rootPath );
        string[] dirs = Directory.GetDirectories(root, "*", SearchOption.AllDirectories);

        dplDirs.Items.Add("/");

        for (int i = 0; i < dirs.Length; i++)
        {
            dplDirs.Items.Add(  dirs[i].Replace(root,"").Replace("\\","/") );
        }

       
        dplDirs.Value = Request[dplDirs.Name];

        
        dplDirs_SelectedIndexChanged(this, e);

        dplFiles.Value = Request[dplFiles.Name];

    }
    protected void dplDirs_SelectedIndexChanged(object sender, EventArgs e)
    {
        string path = Server.MapPath(_rootPath  + dplDirs.Value );
        string[] files = Directory.GetFiles(path, "*", SearchOption.TopDirectoryOnly );

        dplFiles.Items.Clear();
        dplFiles.Items.Add("<没有指定>");

        for (int i = 0; i < files.Length; i++)
        {
            dplFiles.Items.Add(Path.GetFileName(files[i]));
        }
    }

    private string _rootPath;
    //根路径
    public string RootPath
    {
        get { return _rootPath; }
        set 
        { 
            _rootPath = value;
            if (_rootPath.EndsWith("/"))
            {
                _rootPath = _rootPath.Substring(0, _rootPath.Length - 1);
            }
        }
    }


    /// <summary>
    /// 选择的文件
    /// </summary>
    public string FileName
    {
        get 
        {
            if (dplFiles.Value == "<没有指定>")
                return "";

            return _rootPath+  (dplDirs.Value  == "/" ? "" : dplDirs.Value  )+ "/" + dplFiles.Value   ;
        
        
        }
        set 
        {
            if (string.IsNullOrEmpty(value))
            {
                return;
            }

            string dir = value;
            dir = dir.Replace(_rootPath,"");

            string file = Path.GetFileName(dir);
            dir = dir.Substring(0, dir.Length - file.Length-1);

            for (int i = 0; i < dplDirs.Items.Count; i++)
            {
                if (dplDirs.Items[i].Text.Equals(dir))
                {
                    dplDirs.SelectedIndex = i;
                    break;
                }
            }

            dplDirs_SelectedIndexChanged(this, new EventArgs());

            for (int i = 0; i < dplFiles.Items.Count ; i++)
            {
                if (dplFiles.Items[i].Text.Equals(file))
                {
                    dplFiles.SelectedIndex = i;
                    break;
                }
            }

        }
    }



    #region ICallbackEventHandler 成员

    private string dir;

    public string GetCallbackResult()
    {
        string path = Server.MapPath(_rootPath + dir );
        string[] files = Directory.GetFiles(path, "*", SearchOption.TopDirectoryOnly);

        

        
        //Hashtable tb = new Hashtable();
        string json = "[";

        for (int i = 0; i < files.Length; i++)
        {
            //tb.Add(Path.GetFileName(files[i]), Path.GetFileName(files[i]));
            string value = "{{\"Key\":\"{0}\",\"Value\":\"{1}\"}}";
            value = string.Format(value, Path.GetFileName(files[i]), Path.GetFileName(files[i]));

            if (i > 0)
            {
                json += ",";
            }

            json += value;

        }

        json += "]";

        return json;
        

    }

    public void RaiseCallbackEvent(string eventArgument)
    {

        dir = eventArgument;
    }

    #endregion
    protected void Page_Load(object sender, EventArgs e)
    {
        
        string cbReference =
            Page.ClientScript.GetCallbackEventReference(this ,
            "arg", this.UniqueID + "ReceiveServerData", "context");

        string callbackScript = "function "+ this.UniqueID  +"selChange(arg,context) { " +
            cbReference + "} ;";

        Page.ClientScript.RegisterClientScriptBlock(this.GetType(),
            this.UniqueID  , callbackScript, true);

        dplDirs.Attributes.Add("onchange", this.UniqueID + "findserver(this)");
        
        
    }
}