C # writes a long type to a binary file with bw. Write ((long) num); read it out with a long num= (long) Br. ReadInt64 ();

Reason:

Because the long type is System.Int64 (Long integer, which accounts for 8 bytes, representing 64-bit integers, the range is approximately-(10 of 19) to 10 of the square)

The Long Binaryreader.readint64 () method reads a eight-byte signed integer from the current stream and advances the current position of the stream by 8 bytes.

Eight bytes to eight bytes, so

The way to read a long type of binary file is Binaryreader.readint64 ()

C # writes a long type to a binary file with bw. Write ((long) num); read it out with a long num= (long) Br. ReadInt64 ();