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I need to use BinaryReader.Read to read the file that more than 2GB (greater than the integer value range), the function parameters only support int32.
_BinaryReader.Read(_Buffer, 0, ChunkSize) 'ChunkSize value is 5GB (5,368,709,120), it's long value.
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Since it doesn't support it, do it in smaller chunks.
Did you manage to create the target buffer having such large size? The length of arrays is limited.
Answer accepted by question author
Can you use a Memory Mapped File? MemoryMappedFile Class says:
Memory-mapped files enable programmers to work with extremely large files
So that appears to be what Microsoft intends to be used for such large files.