c# - Problem in ComAutomationFactory.CreateObject -

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i tried create object using comautomationfactory.createobject . giving following exception

     "failed create object instance specified progid"

my application running on oob , has elevated permission.

if (comautomationfactory.isavailable && app.current.haselevatedpermissions) {

                dynamic sample = comautomationfactory.createobject("samplecom.comclass");              }

where samplecom com application created in c#

i use silverlight 4

only if dll signed can create object using comautomationfactory.createobject


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