获取虚拟路径的类

 获取虚拟路径的类

 if (HostingEnvironment.VirtualPathProvider.FileExists(virtualPath)) ...{
                    Type compiledType = null;
                    try ...{
                        compiledType = BuildManager.GetCompiledType(virtualPath);
                        
                        if (compiledType == null) ...{
                            object page = BuildManager.CreateInstanceFromVirtualPath(virtualPath, typeof(System.Web.UI.Page));
                            compiledType = page.GetType();
                        }

                    }
                    catch (SecurityException) ...{
                        
                        
                    }

                    if (compiledType != null) ...{
                        data = new WebServiceData(compiledType, pageMethods);   //放入缓存，依赖对象为页面所依赖的子页面。                  
                        BuildDependencySet deps = BuildManager.GetCachedBuildDependencySet(context, virtualPath);
                        IEnumerable virtualPaths = deps.VirtualPaths;
                        if (virtualPaths != null) ...{
                            List<string> paths = new List<string>();
                            foreach (string path in virtualPaths) ...{
                                paths.Add(Path.Combine(context.Request.PhysicalApplicationPath, VirtualPathUtility.GetFileName(path)));
                            }
                            context.Cache.Insert(cacheKey, data, new CacheDependency(paths.ToArray()));
                        }
                        else ...{
                            context.Cache.Insert(cacheKey, data);
                        }
                    }
                }