Lỗi Phần Web: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type Dost_ThongKeBaiViet.Dost_ThongKeBaiViet, Dost_ThongKeBaiViet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=af1a22b2a955aaba could not be found or it is not registered as safe.
[UnsafeControlException: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type Dost_ThongKeBaiViet.Dost_ThongKeBaiViet, Dost_ThongKeBaiViet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=af1a22b2a955aaba could not be found or it is not registered as safe.]
at Microsoft.SharePoint.ApplicationRuntime.SafeControls.GetTypeFromGuid(Guid guid, Guid solutionId, String assemblyFullName, String typeFullName, Boolean throwIfNotFound)
at Microsoft.SharePoint.WebPartPages.SPWebPartManager.CreateWebPartsFromRowSetData(Boolean onlyInitializeClosedWebParts)