COM and hosted controls in IE

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Diego - 19 Apr 2004 14:36 GMT

Hello
I'm working on a .NET C# user control to use it in Windows Forms Applications. This User Control uses a COM Library via RCW. I would like to use the control also through a web page with <OBJECT> tag accessing via IE, in a similar way of old ActiveX Controls
The point is that if I call the .htm page the control is not loaded nor displayed. If I remove the references to the COM Library all seems to work and I see the control
I tried to copy in the virtual folder the COM dll but it does not work
Anyone could explain me why this happen and if exists any work-around

Thank you and best regard
Diego

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"Ying-Shen Yu[MSFT]" - 20 Apr 2004 05:44 GMT

Hi Diego,

I'd like to know if the COM component is on the server-side or on the
client-side? The IE Host windows forms control is actually running on the
client side, so you can only use the COM component registered on the client
system.

Also, by default the IEHost winform control doesn't have the permission to
call the unmanaged COM component, you need grant the UnmanagedCode
permission to the downloaded assembly. You may read the following
documentation to know how to grant permission to a certain assembly :
<.NET Framework Configuration Tool>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cptools/htm
l/cpconnetframeworkadministrationtoolmscorcfgmsc.asp

Please feel free to reply this thread, if you need further help on it.
Thanks!

Best regards,

Ying-Shen Yu [MSFT]
Microsoft Community Support
Get Secure! - www.microsoft.com/security

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COM and hosted controls in IE

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