I know how to run stylecop from console application. But need to know from run from silverlight or any how display output on aspx or .xaml page

First, please see my comment to the question.

You don't think you know how to run it, otherwise you would understand that it does not matter in what application do you run it. But the application needs to be installed where you run it, that's all.

I doubt you understand the purpose of this application, otherwise you would not call it from your application. It is usually called as a build step from the project. It's input is your source files. Again, there would be no difference if this is a Web application or not — the styles are checked before deployment, so you do it on the developer's computer.

Finally, I don't see how StyleCop question can be related to the question on Silverlight "output on aspx or .xaml page" and I don't see how it may make any sense, sorry.

—SA