名命規則

C#: 
    參數, 區域變數: 小駝峰(CamelCasing)
    其它: 大駝峰(PascalCasing)
    參考:
    https://docs.microsoft.com/zh-tw/dotnet/standard/design-guidelines/naming-guidelines

Javascript:
    小駝峰(CamelCasing)

網址:
    全小寫, 用 - (減號) 分隔單字
    參考:
    https://www.seoseo.com.tw/article_detail_609.html
    https://blog.miniasp.com/post/2011/01/14/Avoid-using-underline-as-domain-name-character
    http://epaper.gotop.com.tw/pdf/acn023600.pdf

class 名命 HTML : 
    全小寫, 用 - (減號) 分隔單字 

複合字範列:

Pascal	Camel	Not
BitFlag	bitFlag	Bitflag
Callback	callback	CallBack
Canceled	canceled	Cancelled
DoNot	doNot	Don't
Email	email	EMail
Endpoint	endpoint	EndPoint
FileName	fileName	Filename
Gridline	gridline	GridLine
Hashtable	hashtable	HashTable
Id	id	ID
Indexes	indexes	Indices
LogOff	logOff	LogOut
LogOn	logOn	LogIn
Metadata	metadata	MetaData, metaData
Multipanel	multipanel	MultiPanel
Multiview	multiview	MultiView
Namespace	namespace	NameSpace
Ok	ok	OK
Pi	pi	PI
Placeholder	placeholder	PlaceHolder
SignIn	signIn	SignOn
SignOut	signOut	SignOff
UserName	userName	Username
WhiteSpace	whiteSpace	Whitespace
Writable	writable	Writeable
DateTimePicker	dateTimePicker	DatetimePicker

請用系統管理員身分 開啟 cmd.exe

cd C:\Windows\Microsoft.Net\Framework\v2.0.50727

aspnet_regiis -pef "connectionStrings" "專案路徑"

aspnet_regiis -pef "appSettings" "專案路徑"

* 若出現 'aspnet_regiis'  不是內部或外部命令,可執行的程式或批次檔

先確認iis上專案的Framework版本
cd C:\Windows\Microsoft.Net\Framework\該版本的資料夾

若為v4.0.30319
cd C:\Windows\Microsoft.Net\Framework\v4.0.30319

應該就成功了

---------------------------------------

解密的部分

aspnet_regiis -pdf "connectionStrings" "專案路徑"

aspnet_regiis -pdf "appSettings" "專案路徑"

寫程式這麼多年，終於被這個東西給害到，所以特別提一下
zero-width space: 就是沒有寬度的空白，字元碼  \u200b ， 或是 urlencode =  %e2%80%8b
當你從 word ， excel ，PDF 複製文字貼到記事本，網頁textbox, 或是 visual studio
有時候會把這個碼也一起貼上，重點是: 你肉眼根本看不出來

​2017-08-15 22:05:15​ -> 2017前面有 \u200b, 尾巴也有 
2017-08-15 22:05:15 -> 這個就正常

這會造成甚麼，DateTime.Parse 就會出錯，或是對字串做 MD5 hash 會造成錯誤的結果
然後就會一直 debug 找不出原因，要用 urlencode 測看看才會現出原形
另外，這個碼也無法用 Trim() 清掉，因為他不是 Char.IsWhiteSpace 成員

所以，從 word excel pdf 或是其他網頁 copy 文字貼到程式碼做測試
如果發生怪怪的bug，可能要思考一下是不是這個字元在作怪

客戶要求
1. 檔案只能放在 Firewall 內的後台用 Web server (Server A).
2. 使用者只能存取 DMZ 的 Web server (Server B).
3. Server B 只能用 HTTP 通過 Firewall 向 Server A 要資料.(i.e.  Server B 不能掛戴 Server A 的目錄成為虛擬目錄)

所以在 Server B 上面建立了一支程式用 HTTP 的方式讀取 Server A 的檔案再寫出去.

例如, http://ServerB/Upload/test.pdf 會讀取 http://ServerA/Upload/test.pdf 再送到 Client 端

namespace WWW.Controllers

{

    public class UploadController : Controller

    {

        // GET: Upload

        public void Index(string Filename)

        {

            //Create a stream for the file

            Stream stream = null;



            //This controls how many bytes to read at a time and send to the client

            int bytesToRead = 10000;



            // Buffer to read bytes in chunk size specified above

            byte[] buffer = new Byte[bytesToRead];



            string url = "http://admin-dev.nanya.bike.idv.tw/newnanyaback/Upload/" + Filename;



            // The number of bytes read

            try

            {

                //Create a WebRequest to get the file

                HttpWebRequest fileReq = (HttpWebRequest)HttpWebRequest.Create(url);



                //Create a response for this request

                HttpWebResponse fileResp = (HttpWebResponse)fileReq.GetResponse();



                if (fileReq.ContentLength > 0)

                    fileResp.ContentLength = fileReq.ContentLength;



                //Get the Stream returned from the response

                stream = fileResp.GetResponseStream();



                // prepare the response to the client. resp is the client Response

                var resp = HttpContext.Response;



                if (Filename.ToLower().EndsWith(".png") ||

                    Filename.ToLower().EndsWith(".jpg") ||

                    Filename.ToLower().EndsWith(".jpeg") ||

                    Filename.ToLower().EndsWith(".gif")

                    )

                {

                    resp.ContentType = "image";

                }

                else

                {

                    //Indicate the type of data being sent

                    resp.ContentType = "application/octet-stream";



                    //Name the file

                    resp.AddHeader("Content-Disposition", "attachment; filename=\"" + HttpUtility.UrlEncode(Filename, Encoding.UTF8) + "\"");

                }



                resp.AddHeader("Content-Length", fileResp.ContentLength.ToString());



                int length;

                do

                {

                    // Verify that the client is connected.

                    if (resp.IsClientConnected)

                    {

                        // Read data into the buffer.

                        length = stream.Read(buffer, 0, bytesToRead);



                        // and write it out to the response's output stream

                        resp.OutputStream.Write(buffer, 0, length);



                        // Flush the data

                        resp.Flush();



                        //Clear the buffer

                        buffer = new Byte[bytesToRead];

                    }

                    else

                    {

                        // cancel the download if client has disconnected

                        length = -1;

                    }

                } while (length > 0); //Repeat until no data is read

            }

            finally

            {

                if (stream != null)

                {

                    //Close the input stream

                    stream.Close();

                }

            }

        }

    }

}

但不是這樣就好了, 在 RouteConfig.cs 中要加上:
            routes.MapRoute(
                name: "Upload",
                url: "Upload/{filename}",
                defaults: new { controller = "Upload", action = "Index", filename = UrlParameter.Optional }
            );

此外在 Web.Config 中也要加上:

  <system.webServer>
    <handlers>
      <add name="UrlRoutingHandler_Upload"
           type="System.Web.Routing.UrlRoutingHandler, 
               System.Web, Version=4.0.0.0, 
               Culture=neutral, 
               PublicKeyToken=b03f5f7f11d50a3a"
           path="/Upload/*"
           verb="GET"/>
    </handlers>
  </system.webServer>

參考:
http://stackoverflow.com/questions/5596747/download-stream-file-from-url-asp-net

http://blog.darkthread.net/post-2014-12-05-mvc-routing-for-url-with-filename.aspx

找了兩三篇文章再加一點修正才組出來的,  記錄一下, 要用 iTextSharp 哦.

using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

---
 
            string oldFile = Server.MapPath("/Content/PDF/300000419_20160929162658862.pdf"); //"oldFile.pdf";
            string newFile = oldFile.Replace(".pdf", "_New11.pdf");

            // open the reader
            PdfReader reader = new PdfReader(oldFile);
            Rectangle size = reader.GetPageSizeWithRotation(1);
            Document document = new Document(size);
            int NumberOfPages = reader.NumberOfPages;

            // open the writer
            FileStream fs = new FileStream(newFile, FileMode.Create, FileAccess.Write);
            PdfWriter writer = PdfWriter.GetInstance(document, fs);
            document.Open();

            // the pdf content
            PdfContentByte cb = writer.DirectContent;

            string text = "Watermark...";

            string windir = Environment.GetEnvironmentVariable("windir");
            Chunk textAsChunk = new Chunk(text, new Font(BaseFont.CreateFont(windir + "\\Fonts\\mingliu.ttc,0", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED), 20, Font.NORMAL, new BaseColor(255,0,0)));

            // create the new page and add it to the pdf
            for (int i = 1; i<= NumberOfPages; i++)
            {
                if(i > 1)
                {
                    document.NewPage();
                }

                ColumnText.ShowTextAligned(cb, Element.ALIGN_LEFT, new Phrase(textAsChunk), 0, 0, 0);

                PdfImportedPage page = writer.GetImportedPage(reader, i);
                cb.AddTemplate(page, 0, 0);
            }

            // close the streams and voilá the file should be changed :)
            document.Close();
            fs.Close();
            writer.Close();
            reader.Close();

            Response.Write(newFile + "<br>");
            Response.Write(NumberOfPages + "<br>");

找了一下相關工具，發現這個還不錯
http://selectpdf.com/community-edition/

免費的
這是給開發社群的，基本功能有，但是限制是只能產生 5 頁的 PDF
但5頁限制用於產生帳單，出貨單已經很夠用了
附上 .net40  的元件
 

我找到了我一直很想要的用滑鼠滑一滑就可以關掉頁面和上一頁下一頁的擴充套件啦~​​​

Smooth Gestures 

是這裡分享的>>​幸運草的吉光片羽

他還有分享其他很好用的套件,大家可以安裝來用用唷~

這是一篇加密文章，需輸入密碼才可閱讀

主要是使用 Printing.PreviewPrintController 的產生預覽圖片的功能來儲存列印內容, 再把圖片送到印表機, 以保証列印內容和儲存的圖檔是一致的. 值得一提的是, 在預覽時可以使用不同的印表機, 以便讓產生較小的圖檔, 否則有時會發生 GDI+ 的錯誤.

Sample 如下:

Imports System.Drawing.Printing

Namespace X

    Partial Public Class PrintSomething

        Dim PD As PrintDocument

        Dim ppc As New Printing.PreviewPrintController()

        Dim TotalPage As Int32 = 0

        ''' <summary>

        ''' 第幾次列印, 用來控制寫出的圖檔

        ''' </summary>

        ''' <remarks></remarks>

        Dim PrintCount As Int32 = 1

        Dim PageCount As Int32 = 1

            :

            :

            :

      

        Sub New(ByVal oPM As DB.PackingListMain, ByVal dtDetail As DataTable, dtUsedCoupon As DataTable)

            '初始化資料

            :

            :

            :

        End Sub

        Sub InitPrintDocument()

            '在這裡設定 PrintDocument 的紙張, 印表機, 邊界, 橫印或直印

            PD = New PrintDocument

            :

            :

            :

        End Sub

        Sub print()

            InitPrintDocument()

            PD.PrintController = ppc

           

            ' 第一次先把列印結果存在 Printing.PreviewPrintController 中

            AddHandler PD.PrintPage, AddressOf GeneratePreview

            '再來儲存圖片

            AddHandler PD.EndPrint, AddressOf SaveImage

            PD.Print()

        End Sub



        Dim ppi() As Printing.PreviewPageInfo

        Dim PrintPage As Int32 = 0

        Sub SaveImage(ByVal sender As Object, ByVal ev As PrintEventArgs)

            PrintDebug("Save Image Start, " & Now.ToString("yyyy-MM-dd HH:mm:ss.fff"))

            '把圖檔存起來

            Dim TF As String = Now.ToString("yyyyMMddHHmmss") ' DB.SysConfig.Path.LocalDataRoot

            Dim PathLocal As String = "C:\PrintLog\" & TF.Substring(0, 4) & "-" & TF.Substring(4, 2) & "\"

            Dim PathPackingListSheetImage As String = DB.SysConfig.PackingListSheetImage & TF.Substring(0, 4) & "-" & TF.Substring(4, 2) & "\"

            System.IO.Directory.CreateDirectory(PathLocal)

            System.IO.Directory.CreateDirectory(PathPackingListSheetImage)

            Dim LatestImages As String = ""

            ppi = ppc.GetPreviewPageInfo()

            For x As Integer = 0 To ppi.Length - 1

                Dim Filename As String = TF & "_" & Me.oPM.Id & "_" & x & ".png"

                ppi(x).Image.Save(PathLocal & Filename, System.Drawing.Imaging.ImageFormat.Png)

            Next



            '把圖檔印出來

            For x As Integer = 0 To ppi.Length - 1

  '建立新的 PrintDocument

                InitPrintDocument()

                If CST.WebConfig.Server_NAME = "測試主機" Then

                    UW.WU.DebugWriteLine("PrinterName: " & Me.PD.PrinterSettings.PrinterName)

                    UW.WU.DebugWriteLine("PaperSize: " & PD.DefaultPageSettings.PaperSize.PaperName)

                    PD.DocumentName = "PackingList"

                    PD.PrinterSettings.PrintFileName = "C:\PDF\PackingList" & Now.ToString("yyyyMMddHHmmss") & "_" & PrintPage & ".prn"

                    PD.PrinterSettings.PrintToFile = True

                    'PD.PrinterSettings.

                End If

                '很奇怪, 這裡不會分頁, 所以要一張一張印   

                AddHandler PD.PrintPage, AddressOf pd_PrintPage2

                PD.Print()



               PrintPage += 1

            Next

        End Sub

        Private Sub pd_PrintPage2(ByVal sender As Object, ByVal ev As PrintPageEventArgs)

            '很奇怪, 這裡不會分頁, 所以要一張一張印           

            ev.Graphics.DrawImage(ppi(PrintPage).Image, 0, 0)

            ev.HasMorePages = False

        End Sub



        Private Sub GeneratePreview(ByVal sender As Object, ByVal ev As PrintPageEventArgs)

            ' 列印內容

        End Sub

        End Class

    End Class

End Namespace