The following code:
var appointment = Appointment.Load("input.ics");
appointment.Attachments.First().ContentStream = File.OpenRead("test.txt");
appointment.Save("output.ics");
results in an InvalidCastException:
Unable to cast object of type 'System.IO.FileStream' to type 'System.IO.MemoryStream'.
at Aspose.Email.Attachment.g()
at Jh.a(Appointment a)
at Jh.c()
at Jh.Jha3taa()
at Aspose.Email.Calendar.CalendarWriter.Write(Appointment appointment)
at Aspose.Email.Calendar.Appointment.Save(Stream stream, AppointmentSaveOptions saveOptions)
at Aspose.Email.Calendar.Appointment.Save(String filePath, AppointmentSaveOptions saveOptions)
at Aspose.Email.Calendar.Appointment.Save(String filePath, AppointmentSaveFormat saveFormat)
at SafeBridge.Providers.BufferzoneCDR.AppointmentCDR.<BridgeFileAsyncInternal>d__1.MoveNext() in T:\SafeWorkspace\sw-
However, ContentStream is defined as:
public Stream ContentStream { get; set; }
and described in the docs as:
AttachmentBase.ContentStream property
Gets or sets the content stream.
I would expect to be able to set this property to any Stream derived type. This should either be documented and defined as a MemoryStream or, preferrably, should accept any Stream-derived type.
What if an attachment is very large? Confining this to a MemoryStream is wasteful and might not work on all systems, where memory is low.