OnDoc/Client/UIControls/DocPreview.cs

using DOCGEN;
using OnDoc.Klassen;
using Model;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Database;
using System.Linq.Expressions;
using System.Web.Security;
using Syncfusion.Windows.Forms.PdfViewer;

namespace OnDoc.UIControls
{
    public partial class DocPreview : UserControl
    {
        string PrintDokID = "";
        public int ZoomPercentage { get; set; }
        public DocPreview()
        {
            InitializeComponent();
        }

        public DocPreview(bool Show_Editfunctions)
        {
            InitializeComponent();
            if (Show_Editfunctions)
            {
                this.pnlEdit.Visible = true;
            }
            else
            {
                this.pnlEdit.Visible = false;
            }

        }
        public void Show_Editbuttons()
        {
            this.pnlEdit.Visible= true;
        }

        public void Hide_Editbuttons()
        {
            this.pnlEdit.Visible = false;
        }
        public void Show_Doc(string dokumentid)
        {
            PrintDokID= dokumentid;
            clsdok dok = new clsdok("", "", "");
            if (dokumentid.Length > 25) { dok.dokument = dokumentid; } else { dok = GetDoc(true, dokumentid); }
            var stream = new MemoryStream(Convert.FromBase64String(dok.dokument));


            //clsGetDoc gd = new clsGetDoc(AppParams.connectionstring);

            if (stream.Length > 0)
            {
                this.pdfViewerControl1.Load(stream);
                this.pdfViewerControl1.Visible = true;
                pdfViewerControl1.ZoomMode = ZoomMode.FitWidth;
            }
            else
            {
                
            }
        }

        public void show_base64(string image,string Logtext)
        {
            PrintDokID = "Vorschau Vorlage: " + Logtext; ;
            var stream = new MemoryStream(Convert.FromBase64String(image));
            if (stream.Length > 0)
            {
                this.pdfViewerControl1.Load(stream);
                this.pdfViewerControl1.Visible = true;
                pdfViewerControl1.ZoomMode = ZoomMode.FitWidth;
            }
            else
            {

            }
        }
        public void clear_viewer()
        {
            pdfViewerControl1.Visible= false;
        }
        public void Show_Serienbrief_Dokument(int Serienbriefnr, int Eintragnr, string dokumentid)
        {
            DB db = new DB(AppParams.connectionstring);
            db.Get_Tabledata("Select dbo.BinaryToBase64(dokument) from edex_sb_serienbrief_dokument where serienbriefnr=" + Serienbriefnr.ToString() + " and dokumentid='" + dokumentid+"'", false, true);
                try
            {

                var stream = new MemoryStream(Convert.FromBase64String(db.dsdaten.Tables[0].Rows[0][0].ToString()));
                if (stream.Length > 0)
                {
                    PrintDokID = "Serienbrief: Nr:" + Serienbriefnr.ToString() + " / " + dokumentid.ToString();
                    this.pdfViewerControl1.Load(stream);
                    this.pdfViewerControl1.Visible = true;
                    pdfViewerControl1.ZoomMode = ZoomMode.FitWidth;

                }
                else
                {

                }
            }
            catch { }
            db = null;
              

        }
        private clsdok GetDoc(bool AsPDF, string dokumentid)
        {
            clsdok dok = new clsdok("", "", "");
            if (dokumentid == "")
            {
                return dok; ;
            }
            if (AppParams.UseAPI == "YES")
            {
                string URL = AppParams.RESTURI + "api/GetDocument?dokid=" + dokumentid;
                if (AsPDF == true)
                {
                    URL = AppParams.RESTURI + "api/GetDocumentPDF?dokid=" + dokumentid;
                }

                HttpWebRequest webRequest = HttpWebRequest.Create(URL) as HttpWebRequest;
                webRequest.Method = WebRequestMethods.Http.Get;
                webRequest.Headers["Authorization"] = "Bearer " + AppParams.apikey;
                //webRequest.Credentials = new NetworkCredential(Username, Password);
                //webRequest.ContentType = "application/x-www-form-urlencoded";
                using (HttpWebResponse response = webRequest.GetResponse() as HttpWebResponse)
                {
                    if (response.StatusCode == HttpStatusCode.OK)
                    {
                        StreamReader reader = new StreamReader(response.GetResponseStream());
                        string responseContent = reader.ReadToEnd();

                        dok = Newtonsoft.Json.JsonConvert.DeserializeObject<clsdok>(responseContent);
                    }
                    else
                    {
                        Logging.Logging.Error(URL + ": " + response.StatusCode.ToString() + " / " + response.StatusDescription, "Clinet - DokList GetDocument", "");
                    }
                }
            }
            else
            {
                DocGet gd = new DocGet(AppParams.connectionstring);
                if (AsPDF == true)
                {
                    dok = gd.GetDocAsPDF(dokumentid);
                }
                else
                {
                    dok = gd.GetDoc(dokumentid);
                }
            }

            if (dok.extension.ToString() == "")
            {
                
                return dok;
            }
            Logging.DocLog.Info("Dokument-Vorschau", "OnDoc.DocPreview", dokumentid, "", "Dokument-Vorschau");
            return dok;

        }

        private void pdfViewerControl1_Click(object sender, EventArgs e)
        {

        }

        private void btnFirst_Click(object sender, EventArgs e)
        {
            pdfViewerControl1.GoToPageAtIndex(1);
            SetPageNumber();
        }

        private void btnLast_Click(object sender, EventArgs e)
        {
            pdfViewerControl1.GoToPageAtIndex(pdfViewerControl1.PageCount);
            SetPageNumber();
        }

        private void btnPrevious_Click(object sender, EventArgs e)
        {
            if (pdfViewerControl1.CurrentPageIndex != 1)
            {
                pdfViewerControl1.GoToPageAtIndex(pdfViewerControl1.CurrentPageIndex - 1);
            }

            SetPageNumber();
        }

        private void btnNext_Click(object sender, EventArgs e)
        {
            if (pdfViewerControl1.CurrentPageIndex != pdfViewerControl1.PageCount)
            {
                pdfViewerControl1.GoToPageAtIndex(pdfViewerControl1.CurrentPageIndex + 1);
            }

            SetPageNumber();
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            SetPageNumber();
        }

        /// <summary>
        /// Handles Keydown event of PageNumber Textbox
        /// </summary>
        private void txtPageNumber_KeyDown(object sender, KeyEventArgs e)
        {
           
            int pageNumber = 1;
            if (txtPageNumber.Text != "")
            {
                pageNumber = Convert.ToInt16(txtPageNumber.Text);
            }
            if (e.KeyCode == Keys.Enter)
            {
                pdfViewerControl1.GoToPageAtIndex(pageNumber);
                
            }
        }


        #region Helper methods
        /// <summary>
        /// Loads PDF into PdfViewerControl.
        /// </summary>
        private void LoadDocument(string fileName)
        {
            pdfViewerControl1.Load(fileName);
        }

        void SetPageNumber()
        {
            txtPageNumber.Text = pdfViewerControl1.CurrentPageIndex.ToString();
        }

        #endregion

        private void zoomIn_Click(object sender, EventArgs e)
        {
            if (zoomComboBox.SelectedIndex != 0)
                zoomComboBox.SelectedIndex = zoomComboBox.SelectedIndex - 1;

        }

        private void zoomComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            int ZoomLevel = Convert.ToInt32(zoomComboBox.SelectedItem.ToString().Replace("%", ""));
            pdfViewerControl1.ZoomTo(ZoomLevel);
            ZoomPercentage = ZoomLevel;
        }

        private void zoomOut_Click(object sender, EventArgs e)
        {
            if (zoomComboBox.SelectedIndex != zoomComboBox.Items.Count - 1)
                zoomComboBox.SelectedIndex = zoomComboBox.SelectedIndex + 1;
            ZoomPercentage = Convert.ToInt32(zoomComboBox.SelectedItem.ToString().Replace("%", ""));
        }

        private void FitPage_Click(object sender, EventArgs e)
        {
            pdfViewerControl1.ZoomMode = ZoomMode.FitPage;

        }

        private void FitWidth_Click(object sender, EventArgs e)
        {
            pdfViewerControl1.ZoomMode = ZoomMode.FitWidth;
        }

        private void toolStripButton1_Click(object sender, EventArgs e)
        {
            pdfViewerControl1.Print(true);
            Logging.DocLog.Info("Preview gedruckt", "OnDoc", PrintDokID,"","");
        }

        public void printpdf()
        {
            pdfViewerControl1.Print(true);
            Logging.DocLog.Info("Preview gedruckt", "OnDoc", PrintDokID, "", "");
        }
    }
}