internal static SharingMessage GetSharingMessage(MessageItem item)
{
StreamAttachment sharingMessageAttachment = SharingMessageAttachment.GetSharingMessageAttachment(item);
if (sharingMessageAttachment != null)
{
using (sharingMessageAttachment)
{
using (Stream stream = sharingMessageAttachment.TryGetContentStream(PropertyOpenMode.ReadOnly))
{
SharingMessage sharingMessage = null;
try
{
sharingMessage = SharingMessage.DeserializeFromStream(stream);
}
catch (InvalidOperationException)
{
}
if (sharingMessage != null)
{
ValidationResults validationResults = sharingMessage.Validate();
if (validationResults.Result == ValidationResult.Success)
{
return(sharingMessage);
}
}
}
}
}
return(null);
}
private static StreamAttachment GetOrCreateSharingMessageAttachment(MessageItem item)
{
StreamAttachment streamAttachment = SharingMessageAttachment.GetSharingMessageAttachment(item);
if (streamAttachment == null)
{
streamAttachment = (StreamAttachment)item.AttachmentCollection.Create(AttachmentType.Stream);
}
return(streamAttachment);
}
