bytearray

问题 Anybody have some VBA code that will store a byte array into a MySQL blob column? 回答1: Here is some code. Requires a reference to Microsoft Active Data Objects 2.x Library. It uses the OLE DB provider for MySQL (Might need to install that on the client machine). Sub StoreBLOB(data() As Byte, key As Double) 'stores the BLOB byte array into the row identified by the key 'requires reference to Microsoft Active Data Objects 2.x Library On Error GoTo handler: Dim con As New ADODB.Connection Dim rs

问题 I understand that .NET's regex works with strings, but I need an implementation for byte[] arrays. Are there any open source implementation in .NET? Does byte[] regex exists for any other programming language other than C# which I can use to build a wrapper for it in C#? My limitation is that I have to stay within byte arrays. So cannot do any conversions to strings. Thanks for the advice. 回答1: Regular expressions work with strings. A byte array can contain just about any data. So if you want

问题 Basically, I'm looking for .NET's BitConverter . I need to get bytes from String, then parse them to long value and store it. After that, read long value, parse to byte array and create original String. How can I achieve this in Java? Edit: Someone did already ask similar question. I am looking more like for samples then javadoc reference ... 回答1: String has a getBytes method. You could use this to get a byte array. To store the byte-array as longs, I suggest you wrap the byte-array in a

问题 I have problem with converting BitmapImage to byte[]. I tried a lot of solutions and nothing works, every time i get different errors. For example i found nice solutions but it also doesn't work. What's wrong with it? I'm using Windows Phone 8.1. public static byte[] ImageToBytes(BitmapImage img) { using (MemoryStream ms = new MemoryStream()) { WriteableBitmap btmMap = new WriteableBitmap(img); System.Windows.Media.Imaging.Extensions.SaveJpeg(btmMap, ms, img.PixelWidth, img.PixelHeight, 0,

问题 I transfer a whole .class file (and it's declared and anonymous classes) as a byte[] and want to be able to define it using the class loader on another computer that receives the byte[]. I have found a solution at Java: How to load Class stored as byte[] into the JVM?, however, I don't understand how to use this ByteClassLoader for my purpose. I just post the code here again: public class ByteClassLoader extends URLClassLoader { private final Map<String, byte[]> extraClassDefs; public

问题 I am trying to call a Web API method from a handheld device (Compact Framework) with this code: // "fullFilePath" is a value such as "\Program Files\Bla\abc.xml" // "uri" is something like "http://localhost:28642/api/ControllerName/PostArgsAndXMLFile?serialNum=8675309&siteNum=42" SendXMLFile(fullFilePath, uri, 500); . . . public static string SendXMLFile(string xmlFilepath, string uri, int timeout) { uri = uri.Replace('\\', '/'); if (!uri.StartsWith("/")) { uri = "/" + uri; } HttpWebRequest

问题 My task is to get page count of a pdf content. I made use of SSRS tools to generate pdf byte array. Once I get byte array I need to get the page count of this byte array generated. C# is the programming language used. Currently I am creating a pdf file physically, using the generated pdf byte array. Later I am opening the pdf file in the memory and getting the page count. Finally I am deleting the file that has been created for temporary purpose. Is there any way to get the page count of the

问题 We can extract the mimetype from byte array, e.g., by using Apache Tika. Is it possible to get Filename from Byte Array. 回答1: No. You can take a guess at a mimetype from the content data itself, but the filename is not in there. 回答2: The header field that you may be looking for is called Content-Disposition. If you're downloading an attachment, then there may be a file name in that field: Content-Disposition: attachment;filename=abc.txt But there's no guarantee that you'll have such a file

问题 How do I convert a fixed byte array to a String in managed c++/cli ? For example I have the following Byte array. Byte byte_data[5]; byte_data[0]='a'; byte_data[1]='b'; byte_data[2]='c'; byte_data[3]='d'; byte_data[4]='e'; I have tried the following code String ^mytext=System::Text::UTF8Encoding::UTF8->GetString(byte_data); I get the following error: error C2664: 'System::String ^System::Text::Encoding::GetString(cli::array<Type,dimension> ^)' : cannot convert parameter 1 from 'unsigned char

问题 hello im loading lots of little images (ex: 180x180 10.21kb) from a LOCAL database into lots of different recycler views in fragments in viewpagers in tab layouts (nested fragments.) for instance each tab has a new fragment with a recycler view with these little cards and images everything works fine but eventually it all seems to get a bit much for the system and my app is force closed with an out of memory error the error points to my adapters onBindViewHolder, which looks like this