A CRC (Cyclic Redundancy Check) calculated on the preceding bytes in the chunk, including the chunk type code and chunk data fields, but not including the length field. The CRC is always present, even for chunks containing no data
publicuintCrc
리턴
uint
Data 공개적으로 프로퍼티
The data bytes appropriate to the chunk type, if any. This field can be of zero length.
publicbyte[]Data
리턴
byte[]
Length 공개적으로 프로퍼티
An unsigned integer giving the number of bytes in the chunk's data field. The length counts only the data field, not itself, the chunk type code, or the CRC. Zero is a valid length