need to return web-driver instance inside wcf 4.5 service and serialize this instance of web-driver(of unknown class) for use inside workflow

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C#

WCF

WF

WCFServices

selenium

I have a wcf service in which i am using Selenium web-driver and which i need to return to workflow service,for that happen serialized web-driver require so what will i need to exactly do for that. Following is the WCF data contract which returns web driver instance object to workflowservice.

public IWebDriver webdriver function()
{
wDriver = new FirefoxDriver();
//here we have created selenium web driver instance//

//find elements and sendkeys

return webdriver;

}


returning webdriver object to workflow but workflow need to serialized webdriver but dont know how to serialize webdriver object because don't know type and attribute of this webdriver class.