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I am trying to convert byte array to int array then convert the byte array back to int array.

for converting from byte array to int array i used this code .

int[] iArray = new int[someSize];
byte[] bArray = new byte[iArray.Length * sizeof(int)];
Buffer.BlockCopy(iArray, 0,bArray, 0, bArray.Length); // this code works correctly.

but when converting from byte array to int array , the values in the iArray2 array becomes false when the value in the iArray array is larger than 256 (may be it is overflow i do not know.)

// what is the error in this code?.
int iArray2 = new int[someSize];
Buffer.BlockCopy(bArray, 0, iArray2, 0, iArray2.Length);

How can i convert from byte array to int array correctly? thanks?

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A byte stores values from 0 to 255. What value would you expect the resulting byte to have when converted from an integer value of, say, 1000? – Chris Shain Apr 26 '12 at 19:45

1 Answer

up vote 5 down vote accepted

Buffer.BlockCopy always deals in bytes, not array units.

Therefore, when you pass iArray2.Length in the second BlockCopy() call, you're copying that many bytes, which is one quarter of your actual array.

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ok thanks, how can i convert from byte array to int array ? – HforHesham Apr 26 '12 at 19:52
@HeshamAbouelsoaod: By passing the correct length in bytes. – SLaks Apr 26 '12 at 19:53
ok it works , thanks. – HforHesham Apr 26 '12 at 20:06

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