c# - ASP .NET Reference Web Element -


i'm new asp .net. i'm attempting duplicate example found here simple in-browser pdf editor.

i made blank asp .net project in visual studio , added _default.aspx code link above:

_default.aspx

<%@ page language="c#" codefile="default.aspx.cs" inherits="_default" %>  <%@ register assembly="radpdf" namespace="radpdf.web.ui" tagprefix="radpdf" %>  <!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en"     "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>rad pdf sample</title> </head> <body>     <form id="form1" runat="server">     <div>         <radpdf:pdfwebcontrol id="pdfwebcontrol1" runat="server" height="600px" width="100%" />     </div>     </form> </body> </html>

_default.aspx.cs

using system; using radpdf.web.ui;  public partial class _default : system.web.ui.page {      protected void page_load(object sender, eventargs e)     {         if (!ispostback)         {             //get pdf byte array file (or database, browser upload, remote storage, etc)             byte[] pdfdata = system.io.file.readallbytes(@"c:\users\scotth\desktopt-1 work order - copy.pdf");              //load pdf byte array rad pdf             this.pdfwebcontrol1.createdocument("document name", pdfdata);         }     } }

however, error on last line of _default.aspx.cs:

this.pdfwebcontrol1.createdocument("document name", pdfdata);

the error is:

'_default' not contain definition 'pdfwebcontrol1' , no extension method 'pdfwebcontrol1' accepting first argument of type '_default' found (are missing using directive or assembly reference?)

why reference broken? seems should referencing in _default.aspx:

<radpdf:pdfwebcontrol id="pdfwebcontrol1" runat="server" height="600px" width="100%" />

yet have error. how fix reference? standard way reference these elements in asp .net? in advance.


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