Delegate Attachment.AttachmentDownloadingProgressCallback
Represents the progress of an attachment download operation.
public delegate bool Attachment.AttachmentDownloadingProgressCallback(long? contentLength, long bytesRead)
Parameters
contentLengthlong?The total size of the content in bytes, or
nullif the server did not provide a content length.bytesReadlongThe number of bytes downloaded so far.
Returns
- bool
trueto continue the download;falseto cancel it.