CODEWITHSUNDEEP
c#filearrays
Jose Retana
Jose Retana

Reputation: 59

how to combine multiples bytes arrays into one to create a the file

The help I need is to know how can I combine multiples byte array of 1024 bytes length each, into one byte array to create the file.

I need to do this because I have to send multiples files to SAP, but the files must be split in byte arrays of 1024 (byte[1024]) and after I split the files I'm saving this ones into a collection, and the problem I having is when the file is created in SAP this one is corrupt. And I want to discard any problem when I split the files

this ones are the methods I'm using to split the files

for (int i = 0; i < attachRaw.Count(); i++)
        {
            countLine = attachRaw[i].content.Length / 1024;
            if (attachRaw[i].content.Length % 1024 != 0)
                countLine++;
            ZFXX_ATTATTACHMENT_VBA[] attachArray = new ZFXX_ATTATTACHMENT_VBA[countLine];               
            for (int y = 0; y < countLine; y++)
            {
                ZFXX_ATTATTACHMENT_VBA attach = new ZFXX_ATTATTACHMENT_VBA();
                attach.CONTENT = new byte[i == (countLine - 1) ? (attachRaw[i].content.Length - i * 1024) : 1024];
                if (i == (countLine - 1))
                {
                    countLine++;
                    countLine--;
                }
                if (attachRaw[i].content.Length < 1024)
                {
                    attach.CONTENT = attachRaw[i].content;
                }
                else
                {
                    attach.CONTENT = FractionByteArray(i * 1024, (i == (countLine - 1) ? attachRaw[i].content.Length : (i * 1024 + 1024)), attachRaw[i].content);
                }
                attach.FILE_LINK = attachRaw[i].fileLink;
                attachmentRaw.Add(attach);

            }

        }


private static byte[] FractionByteArray(int start, int finish, byte[] array)
    {
        byte[] returnArray = new byte[finish - start];

        for (int i = 0; i < finish - start; i++)
        {
            returnArray[i] = array[start + i];
        }
        return returnArray;
    }

Upvotes: 2

Views: 4586

Answers (1)

sa_ddam213
sa_ddam213

Reputation: 43596

You could use BlockCopy to Join all your arrays.

Something like:

    private byte[] JoinArrays(IEnumerable<byte[]> arrays)
    {
        int offset = 0;
        byte[] fullArray = new byte[arrays.Sum(a => a.Length)];
        foreach (byte[] array in arrays)
        {
            Buffer.BlockCopy(array, 0, fullArray, offset, array.Length);
            offset += array.Length;
        }
        return fullArray;
    }

Upvotes: 9

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