namespace webchange
{
    /// <summary>
    /// attachme allows for multiple files to be uploaded to your web server while using
    /// only one HttpInputFile control and a listbox.
    /// </summary>
    public class attachme : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.ListBox ListBox1;
        protected System.Web.UI.WebControls.Button AddFile;
        protected System.Web.UI.WebControls.Button RemvFile;
        protected System.Web.UI.HtmlControls.HtmlInputFile FindFile;
        protected System.Web.UI.HtmlControls.HtmlInputButton Upload;
        protected System.Web.UI.WebControls.Label Label1;
        protected System.Web.UI.HtmlControls.HtmlGenericControl txtOutput;
        public ArrayList files = new ArrayList();
                static public ArrayList hif = new ArrayList();
        public int filesUploaded = 0;
   
        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put user code to initialize the page here
       
        }

        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }
       
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {   
            this.RemvFile.Click += new System.EventHandler(this.RemvFile_Click);
            this.AddFile.Click += new System.EventHandler(this.AddFile_Click);
            this.Upload.ServerClick += new System.EventHandler(this.Upload_ServerClick);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        /// <summary>
        /// AddFile will add the path of the client side file that is currently in the
        /// PostedFile
        /// property of the HttpInputFile control to the listbox.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void AddFile_Click(object sender, System.EventArgs e)
        {
            if (Page.IsPostBack == true)
            {
                hif.Add(FindFile);
                ListBox1.Items.Add(FindFile.PostedFile.FileName);
            }
            else
            {
               
            }
        }

        /// <summary>
        /// RemvFile will remove the currently selected file from the listbox.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void RemvFile_Click(object sender, System.EventArgs e)
        {
            if(ListBox1.Items.Count != 0)
            {
                hif.RemoveAt(ListBox1.SelectedIndex);
                ListBox1.Items.Remove(ListBox1.SelectedItem.Text);
            }
       
        }

        /// <summary>
        /// Upload_ServerClick is the server side script that will upload the files to
        /// the web server
        /// by looping through the files in the listbox.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void Upload_ServerClick(object sender, System.EventArgs e)
        {
            string baseLocation = "C:\\temp\\";
            string status = "";
           
           
            if((ListBox1.Items.Count == 0) && (filesUploaded == 0))
            {
                Label1.Text = "Error - a file name must be specified.";
                return;

            }
            else
            {
                foreach(System.Web.UI.HtmlControls.HtmlInputFile HIF in hif)
                {
                    try
                    {
                        string fn = System.IO.Path.GetFileName(HIF.PostedFile.FileName);
                        HIF.PostedFile.SaveAs(baseLocation + fn);
                        filesUploaded++;
                        status += fn + "<br>";
                    }
                    catch(Exception err)
                    {
                        Label1.Text = "Error saving file " + baseLocation
                                                           + "<br>" + err.ToString();
                    }
                }

                if(filesUploaded == hif.Count)
                {
                    Label1.Text = "These " + filesUploaded + " file(s) were "
                                           + "uploaded:<br>" + status;
                }
                hif.Clear();
                ListBox1.Items.Clear();
            }
        }