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plurals

POBit manipulation from a ByteArray
primarykey
Id
10436110
data
AcceptedAnswerId
10436217
AnswerCount
2
ClosedDate
CommentCount
3
CommunityOwnedDate
CreationDate
2012-05-03T17:06:06.957
FavoriteCount
0
LastActivityDate
2012-05-04T12:04:51.357
LastEditDate
2012-05-04T04:33:16.297
LastEditorUserId
1204319
OwnerUserId
1204319
ParentId
0
PostTypeId
1
Score
0
ViewCount
2452
LastEditorDisplayName
text
Body
I would like to know how to manipulate bits from a ByteArray. What I need is to shift the bits according to a 'table' that I have. Table: <blockquote> <pre><code>Bit 0 -> Bit 26 Bit 1 -> Bit 31 Bit 2 -> Bit 17 ... Bit 31 -> Bit 5 </code></pre> </blockquote> I convert the ByteArray to BitArray using this method <pre><code>public static BitArray ByteArraytoBitArray(byte[] bytes) { BitArray bits = new BitArray(bytes); return bits; } </code></pre> But I am stuck there, I don't know how to shift the bits according to the table and then back to ByteArray. EDIT: Code Snipet: <pre><code>public static byte[] StringToByteArray(String hex) { int NumberChars = hex.Length; byte[] bytes = new byte[NumberChars / 2]; for (int i = 0; i < NumberChars; i += 2) bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16); return bytes; } private void button3_Click(object sender, EventArgs e) { string featherearring = "00804804A02A1CA20100000000000000D2F8B6FABBB700000000000000000000"; var strarray = StringToByteArray(featherearring); byte[] strarray_comp = Enc.Encrypt(strarray); string conv = BitConverter.ToString(strarray_comp); MessageBox.Show(conv.Replace("-", "")); } public static byte[] BitArrayToByteArray(BitArray bits) { byte[] bytes = new byte[bits.Length / 8]; bits.CopyTo(bytes, 0); return bytes; } public static byte[] Encrypt(byte[] input) { BitArray source = new BitArray(input); BitArray target = new BitArray(source.Length); target[26] = source[0]; target[31] = source[1]; target[17] = source[2]; target[10] = source[3]; target[30] = source[4]; target[16] = source[5]; target[24] = source[6]; target[2] = source[7]; target[29] = source[8]; target[8] = source[9]; target[20] = source[10]; target[15] = source[11]; target[28] = source[12]; target[11] = source[13]; target[13] = source[14]; target[4] = source[15]; target[19] = source[16]; target[23] = source[17]; target[0] = source[18]; target[12] = source[19]; target[14] = source[20]; target[27] = source[21]; target[6] = source[22]; target[18] = source[23]; target[21] = source[24]; target[3] = source[25]; target[9] = source[26]; target[7] = source[27]; target[22] = source[28]; target[1] = source[29]; target[25] = source[30]; target[5] = source[31]; return BitArrayToByteArray(target); } </code></pre> my input byte array is "00804804A02A1CA20100000000000000D2F8B6FABBB700000000000000000000" and my output with zimdanen's code is "5012000000000000000000000000000000000000000000000000000000000000" and it should be "501200002FD901000000000400000000BFE8C4DB140D11F40000000000000000" As you can see, it gets the first 2 bytes right, but the rest is are all null.
Tags
<c#><bytearray><bit-manipulation>
Title
Bit manipulation from a ByteArray
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USAlan Alvarez
UserOwnerUserId
1. USAlan Alvarez
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

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