SSC/CMS_SC/WebUserControls/mod_fileUpload.ascx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using CMS_SC_Data;
using System.Text;
using SteamWare;

namespace CMS_SC.WebUserControls
{
    public partial class mod_fileUpload : SteamWare.UserControl
    {
        /// <summary>
        /// selezione valore in DettScheda
        /// </summary>
        public event EventHandler eh_fileMod;
        /// <summary>
        /// sollevo evento selezione
        /// </summary>
        protected void raiseEvent()
        {
            // sollevo evento nuovo valore...
            if (eh_fileMod != null)
            {
                eh_fileMod(this, new EventArgs());
            }
        }
        /// <summary>
        /// abilita modifica/cancellazione allegati
        /// </summary>
        public bool enableMod { get; set; }
        /// <summary>
        /// caricamento pagina
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            this.Page.Form.Enctype = "multipart/form-data";
            fisVisFU(enableMod);
            if (!IsPostBack)
            {
                fisVisFU(false);
                grView.DataBind();
            }
            divNewEdit.Visible = isWriteEnabled && enableMod;
            btnAdd.DataBind(); 
        }
        /// <summary>
        /// Chiave di filtraggio dati...
        /// </summary>
        public string filtKey
        {
            get
            {
                return hfFiltKey.Value;
            }
            set
            {
                hfFiltKey.Value = value;
            }
        }

        protected void Upload(object sender, EventArgs e)
        {
            if (FileUploadControl.HasFile)
            {
                string filename = Path.GetFileName(FileUploadControl.PostedFile.FileName);
                string contentType = FileUploadControl.PostedFile.ContentType;
                using (Stream fs = FileUploadControl.PostedFile.InputStream)
                {
                    using (BinaryReader br = new BinaryReader(fs))
                    {
                        byte[] bytes = br.ReadBytes((Int32)fs.Length);
                        // PROCEDO SOLO SE HO UN FILE!!!! ovvero bytes <> null
                        if (bytes.Length > 0)
                        {
                            // controllo se sia caricamento o update...
                            if (grView.SelectedIndex != -1)
                            {
                                try
                                {
                                    int orig_idxFile = Convert.ToInt32(grView.SelectedValue);
                                    DtProxy.man.taFiles.updateQuery(filename, filtKey, contentType, bytes, orig_idxFile);
                                }
                                catch
                                { }
                            }
                            else
                            {
                                DtProxy.man.taFiles.insertQuery(filename, filtKey, contentType, bytes);
                            }
                        }
                    }
                }
                grView.DataBind();
                raiseEvent();
#if false
                Response.Redirect(Request.Url.AbsoluteUri);  
#endif
            }
        }

        protected void DownloadFile(object sender, EventArgs e)
        {
            int idxFile = int.Parse((sender as LinkButton).CommandArgument);
            byte[] bytes;
            string fileName, contentType;
            DS_Utility.tblFilesRow fileRow = DtProxy.man.taFiles.getByKey(idxFile)[0];
            bytes = fileRow.Data;
            contentType = fileRow.ContentType;
            fileName = fileRow.FileName;
            Response.Clear();
            Response.Buffer = true;
            Response.Charset = "";
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.ContentType = contentType;
            Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();
        }

        protected void grView_SelectedIndexChanged(object sender, EventArgs e)
        {
            // mostro controllo x edit...  
            fisVisFU(true);
            btnUpload.Text = "Sostituisci File";
        }

        protected void btnAdd_Click(object sender, EventArgs e)
        {
            fisVisFU(true);
            btnUpload.Text = "Carica Nuovo File";
        }
        /// <summary>
        /// fix visibilità controllo file upload
        /// </summary>
        /// <param name="showAdd">mostra controlli add=true oppure nasconde = false</param>
        private void fisVisFU(bool showAdd)
        {
            divFileUpl.Visible = showAdd;
            btnAdd.Visible = !showAdd;
            btnCancel.Visible = showAdd;
            if (grView.SelectedIndex != -1 && !showAdd)
            {
                grView.SelectedIndex = -1;
            }
        }

        protected void btnCancel_Click(object sender, EventArgs e)
        {
            fisVisFU(false);
        }

    }
}