/// <summary>
/// Custom Controller factory method returning a serialized object if available.
/// </summary>
/// <param name="actionContext"></param>
/// <returns></returns>
public object Create(ControllerContext actionContext)
{
object controller = null;
var controllerTypeInfo = actionContext.ActionDescriptor.ControllerTypeInfo;
var controllerType = controllerTypeInfo.AsType();
var storageID = StorageImplementation.GetStorageID(controllerTypeInfo.Name);
var sessionStorageID = StorageImplementation.GetSessionStorageID(controllerTypeInfo.Name);
var storage = StorageImplementation.GetStorage(this.Configuration, this.HttpContext, sessionStorageID);
StorageImplementation.ClearIfRequested(this.HttpContext, storage, storageID);
Guid sessionOverride;
Guid session;
byte[] bytes;
Func <byte[], byte[]> filter = null;
// ---------- Direct GET request ?session= from the Database ----------
if (this.HttpContext.Request.Method == WebRequestMethods.Http.Get &&
Guid.TryParse(this.HttpContext.Request.Query["session"], out sessionOverride))
{
using (var db = new ASP_DBEntities())
{
(bytes, filter) = StorageImplementation.DatabaseBytes(Configuration, HttpContext, storageID, sessionOverride);
controller = DeserializeController(actionContext, controllerTypeInfo, controllerType, bytes, filter);
}
}
else
{
// ---------- Load from ViewState ----------
if (storage == Storage.ViewState &&
this.HttpContext.Request.Method == WebRequestMethods.Http.Post &&
this.HttpContext.Request.Form.ContainsKey(storageID))
{
// input type=hidden from <input viewstate="@ViewBag.ViewState" />
var controllerString = this.HttpContext.Request.Form[storageID];
if (!String.IsNullOrEmpty(controllerString))
{
(bytes, filter) = StorageImplementation.ViewStateBytes(this.Configuration, controllerString);
controller = DeserializeController(actionContext, controllerTypeInfo, controllerType, bytes, filter);
}
}
// ---------- Load from Session ----------
else if (storage == Storage.Session &&
this.HttpContext.Session.TryGetValue(storageID, out bytes))
{
controller = DeserializeController(actionContext, controllerTypeInfo, controllerType, bytes);
}
// ---------- Load from Database ----------
else if (storage == Storage.Database &&
Guid.TryParse(this.HttpContext.Request.Cookies[storageID].FromCookieString()["session"], out session))
{
(bytes, filter) = StorageImplementation.DatabaseBytes(Configuration, HttpContext, storageID, session);
controller = DeserializeController(actionContext, controllerTypeInfo, controllerType, bytes, filter);
((IPersistentController)controller).Session = session;
}
// ---------- Load from X-ViewState Header ----------
else if (storage == Storage.Header &&
this.HttpContext.Request.Headers.ContainsKey(StorageImplementation.HeaderName))
{
// input type=hidden from <input viewstate="@ViewBag.ViewState" />
var controllerString = this.HttpContext.Request.Headers[StorageImplementation.HeaderName];
if (!String.IsNullOrEmpty(controllerString))
{
(bytes, filter) = StorageImplementation.ViewStateBytes(this.Configuration, controllerString);
controller = DeserializeController(actionContext, controllerTypeInfo, controllerType, bytes, filter);
}
}
if (controller == null)
{
// ASP.NET Core implementation, no persistence, just return the new controller
controller = actionContext.HttpContext.RequestServices.GetService(controllerType);
}
}
return(controller);
}
