Render a partial view to a variable in ASP.NET MVC

renderaview.cs

using (StringWriter sw = new StringWriter())
{
    ViewData.Model = oCalendarEvent;
    ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, "_PARTIALVIEWNAME");
    ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw);
    viewResult.View.Render(viewContext, sw);

    eventView = sw.GetStringBuilder().ToString().RemoveAll("\r\n");
}