/// <summary>
/// Advances to the next attribute in the TNEF stream.
/// </summary>
/// <remarks>
/// Advances to the next attribute in the TNEF stream.
/// </remarks>
/// <returns><c>true</c> if there is another attribute available to be read; otherwise <c>false</c>.</returns>
/// <exception cref="TnefException">
/// The TNEF stream is corrupted or invalid.
/// </exception>
public bool ReadNextAttribute()
{
CheckDisposed();
if (AttributeRawValueStreamOffset != 0 && !SkipAttributeRawValue())
{
return(false);
}
try {
AttributeLevel = (TnefAttributeLevel)ReadByte();
} catch (EndOfStreamException) {
return(false);
}
CheckAttributeLevel();
try {
AttributeTag = (TnefAttributeTag)ReadInt32();
AttributeRawValueLength = ReadInt32();
AttributeRawValueStreamOffset = StreamOffset;
checksum = 0;
} catch (EndOfStreamException) {
SetComplianceError(TnefComplianceStatus.StreamTruncated);
return(false);
}
CheckAttributeTag();
if (AttributeRawValueLength < 0)
{
SetComplianceError(TnefComplianceStatus.InvalidAttributeLength);
return(false);
}
try {
TnefPropertyReader.Load();
} catch (EndOfStreamException) {
SetComplianceError(TnefComplianceStatus.StreamTruncated);
return(false);
}
return(true);
}