WebSCR/WebSCR/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 WebSCR_data;
using System.Text;
using SteamWare;

namespace WebSCR.WebUserControls
{
    public partial class mod_fileUpload : SteamWare.UserControl
    {
        /// <summary>
        /// abilita modifica/cancellazione allegati
        /// </summary>
        public bool enableMod { get; set; }

        public bool showOpenNewTab
        {
            get
            {
                return divOpenNew.Visible;
            }
            set
            {
                divOpenNew.Visible = value;
                divNormal.Visible = !value;
            }
        }

        /// <summary>
        /// caricamento pagina
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                hlOpenNew.NavigateUrl = string.Format("~/Allegati?IdxImpegno={0}", memLayer.ML.QSI("idxImpegno"));
                fisVisFU(false);
                grView.DataBind();
            }
            divNewEdit.Visible = isWriteEnabled;
            btnAdd.DataBind();
        }

        public void doUpdate()
        {
            grView.DataBind();
        }

        public int numAllegati
        {
            get
            {
                int answ = 0;
                try
                {
                    answ = DtProxy.man.taFile.getByImpegno(memLayer.ML.QSI("idxImpegno")).Rows.Count;
                }
                catch
                { }
                return answ;
            }
        }

        protected void Upload(object sender, EventArgs e)
        {
            string filename = Path.GetFileName(FileUpload1.PostedFile.FileName);
            string contentType = FileUpload1.PostedFile.ContentType;
            int idxImpegno = memLayer.ML.QSI("idxImpegno");
            using (Stream fs = FileUpload1.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.taFile.UpdateQuery(idxImpegno, 0, filename, contentType, bytes, orig_idxFile);
                            }
                            catch
                            { }
                        }
                        else
                        {
                            DtProxy.man.taFile.InsertQuery(idxImpegno, 0, filename, contentType, bytes);
                        }
                    }
                }
            }
            Response.Redirect(Request.Url.AbsoluteUri);
        }

        protected void DownloadFile(object sender, EventArgs e)
        {
            int idxFile = int.Parse((sender as LinkButton).CommandArgument);
            byte[] bytes;
            string fileName, contentType;
            WebSCR_data.DS_Utility.tblFilesRow fileRow = DtProxy.man.taFile.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);
        }

    }
}