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问题 I have two functions: Function 1: ImageToByteArray: Is used to Convert an Image into a Byte Array and then Store in an Oracle Database, in a BLOB Field. public byte[] ImageToByteArray(string sPath) { byte[] data = null; FileInfo fInfo = new FileInfo(sPath); long numBytes = fInfo.Length; FileStream fStream = new FileStream(sPath, FileMode.Open, FileAccess.Read); BinaryReader br = new BinaryReader(fStream); data = br.ReadBytes((int)numBytes); return data; } Function 2: ByteArrayToImage: Is used

问题 I've having an issue decoding a file using an UTF8Encoder. I am reading text from a file which I have encoded with UTF8 (String > Byte) See the following method. public static void Encode(string Path) { string text; Byte[] bytes; using (StreamReader sr = new StreamReader(Path)) { text = sr.ReadToEnd(); UTF8Encoding Encoding = new UTF8Encoding(); bytes = Encoding.GetBytes(text); sr.Close(); } using (StreamWriter sw = new StreamWriter(Path)) { foreach (byte b in bytes) sw.Write(b.ToString());

问题 I have a problem with converting raw-bytes values into java types. I am receiving bytes by a datagram socket as a bytes array. I know exactly which bytes means what, but I don't know how to convert them appropriately (I mean I know offsets, but don't know if what I think I received is correct ;)). For example, I want to convert 16 bit unsigned short into java int type. I found some examples in the web, the one is: public int getUShort(byte[] bytes, int offset) { int b0 = bytes[offset] & oxFF;

问题 Hello I'm a newbie with Python but I've been interested on it for 2 years. I want to make robots and I'm trying to use Python with pyserial on blender. But I found a problem and after 2 hours of looking for the answer in Google and in this site I found that maybe I'm retarded because I can't solve it. I think it isn't asked yet. I'm using a devantech sd84 servo controller and controling it via a USB port a serial device so I use pyserial . The problem is that I want Python to take a decimal

问题 How to convert a byte to a char? I don't mean an ASCII representation. I have a variable of type byte and want it as a character. I want just following conversions from byte to char: 0 ->'0' 1 ->'1' 2 ->'2' 3 ->'3' 4 ->'4' 5 ->'5' 6 ->'6' 7 ->'7' 8 ->'8' 9 ->'9' (char)1 and Convert.ToChar(1) do not work. They result in '' because they think 1 is the ASCII code. 回答1: the number .ToString(); one.ToString(); // one.ToString()[0] - first char -'1' two.ToString(); // two.ToString()[0] - first char

问题 I'm using zipfile module for python to extract a zipfile I retrieved from the internet using urllib.urlretrieve() the files in the zip file are patch files created by bsdiff, however when I let python extract the zip file and try to use bspatch it says corrupted patch file. When I manually extract the zip file using 7-zip overwrite the patch files and then run the patcher it patches fine. I also noticed when overwriting these files manually that the bytesize differed. One should be 195 bytes

问题 I have converted a video to bytes array and stored it in MsSql Database. Now I fetch it from database and I get the byte array. I want to set this byte array as Source of media element and then show this video in WPF application. Please suggest a way where I can convert byte array or memory stream to Media Elements Source? I will not have permission to write on users machine, so writing a file onto user machine and then setting the source will not work for me. 回答1: That's not directly

问题 I am really liking pdfclown in c# but I would like to open a pdf from a byte[] array or filestream. I have not found any examples of this for pdfclown. Could anyone help? An example would be something like: using (org.pdfclown.files.File file = new org.pdfclown.bytes.IInputStream(bytes)) { ... } Thanks 回答1: This is the right way to open a file from a byte array: var bytes = . . .; using (var file = new org.pdfclown.files.File(new org.pdfclown.bytes.Buffer(bytes))) { } If you check out PDF

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Is the received stream from a socket limited to a single send command? Note: I see this question very complicated (hopefully not for you guys, that's why Im asking here lol) and I tried my best to explain it as simple and clear as possible. In my application, I'm continually receiving byte arrays in a fix sized buffer. These series of byte arrays that I'm receiving has been serialized 'binarily'. However,

问题 I am trying to figure out how to get to a specific byte in a binary file using java. I've done a ton of reading on byte level operations and have gotten myself thoroughly confused. Right now I can loop through a file, as in the code below, and tell it to stop at the byte I want. But I know that this is ham-fisted and there is a 'right' way to do this. So for example if I have a file and I need to return the byte from off-set 000400 how can I a get this from a FileInputStream? public ByteLab()