.net - ActiveX C# : acces to method of C# file -


i write simple activex (just show alert hello world) can't acces method helloworld of c# program when call activex in javascript function

this c# program

using system.collections.generic; using system.linq; using system.text; using system.runtime.interopservices;  namespace democsharpactivex {     [progid("democsharpactivex.helloworld")]     [classinterface(classinterfacetype.autodual)]     [guid("1c61c720-ce70-40e5-9e88-714469911fb3")]     [comvisible(true)]     public class helloworld     {         [comvisible(true)]         public string sayhello()         {             return "hello world!";         }     } }

my html file

<!doctype html public "-//w3c//dtd html 4.0 transitional//en" >   <html>   <head>     <title>webform1</title>   </head>    <body>        <object id="democsharpactivex" classid="clsid:1c61c720-ce70-40e5-9e88-714469911fb3" viewastext></object>            <script type="text/javascript">             try {                 var obj = document.democsharpactivex;                 if (obj) {                     alert(obj.sayhello());                 } else {                     alert("object not created!");                 }             } catch (err) {                 alert(err.description);             }          </script>    </body> </html>

if execute html file error :

  object not support property or method

are sure activex registered in system , initialized?

your activex not implement iobjectsafety interface ie not run normaly. check security zone demo page land in , set setting prompt when initializing unsafe activex

also, might want @ this example , if want install activex cab this question


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