The offset and length exceed the limit of the array, or the count is greater than the ending point from the index to the source set.

 Error scenarios:

Open a file using the filestream object and want to read it in the cache. Because the cache size is 1 kb, you need to read it in multiple times. However, when using the filestream. Read () method,

Error code:

Byte [] sendbuf = new byte [m_nblocksize];

Int nread = readfile. Read (sendbuf, noffset, m_nblocksize );

When noffset = 1, an error is always thrown: the offset and length exceed the limit of the array, or the count is greater than the ending point from the index to the source set.

Error cause:

The meaning of each parameter is not clear.

Filestream

Public override int read (byte [] array, int offset, int count)

Where:

Array

Type: array <system...:. byte> [] () []

This method contains the specified byte array, and the offset and (Offset + count-
1) The value is replaced by the byte read from the current source.

Offset

Type: system...:. int32

The Byte offset in array, where the byte is read.

Count

Type: system...:. int32

The maximum number of bytes read.

At the beginning, the error indicates that offset is a cheap file stream, which leads to this error.