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  • Which card readers support HID (Human Interface Device) and emulate keyboard input? [closed]

    - by Level1Coder
    I'm looking for a card reader to interface with an inhouse webapp and need it to emulate keyboard input to type the card data (serial number) into a web form. A simple usage scenario would be where I open notepad, have notepad focused as front most, swipe the card, and the card reader can type out the card data into notepad as plain text. As long as this works, the card data can work with any web form. Which card readers supports this kind of keyboard emulation mode?

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  • Adobe automatise l'installation de ses mises à jour de sécurité à partir de jeudi pour Acrobat et Re

    Mise à jour du 09/04/10 NB : Les commentaires sur cette mise à jour commencent ici dans le topic Adobe automatise l'installation de ses mises à jour de sécurité Pour Acrobat et Reader Adobe va délivrer ses prochaines mises à jour de sécurité pour Reader et Acrobat de manière automatique. Autrement dit, les patchs seront téléchargés et installés de manière transparente pour l'utilisateur, sans que celui-ci ait la moindre manipulation à effectuer. Ce nouveau processus automatisé entre...

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  • From the Tips Box: Controlling Xbox Controllers in Windows, Keeping Your Computer Cool in the Summer, and a DIY Book Scanning Rig

    - by Jason Fitzpatrick
    Once a week we round up some great reader tips from the tips box and reader comments, and share the with the rest of you. This week we’re looking at an alternate way to control Xbox controller in Windows, how to keep your computer cool in the summer heat, and how to build a power DIY book scanner. How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • How can I combine my FTP queries? [migrated]

    - by ryansworld10
    My program has several times where it queries an FTP server to read and upload information. How can I combine all these into one FTP class to handle everything? private static void UploadToFTP(string[] FTPSettings) { try { FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTPSettings[0]); request.Method = WebRequestMethods.Ftp.MakeDirectory; request.Credentials = new NetworkCredential(FTPSettings[1], FTPSettings[2]); FtpWebResponse response = (FtpWebResponse)request.GetResponse(); } catch { } try { FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTPSettings[0] + Path.GetFileName(file)); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(FTPSettings[1], FTPSettings[2]); StreamReader source = new StreamReader(file); byte[] fileContents = Encoding.UTF8.GetBytes(source.ReadToEnd()); source.Close(); request.ContentLength = fileContents.Length; Stream requestStream = request.GetRequestStream(); requestStream.Write(fileContents, 0, fileContents.Length); requestStream.Close(); FtpWebResponse response = (FtpWebResponse)request.GetResponse(); response.Close(); RegenLog(); } catch (Exception e) { File.AppendAllText(file, string.Format("{0}{0}Upload Failed - ({2}) - {1}{0}", nl, System.DateTime.Now, e.Message.ToString())); } } private static void CheckBlacklist(string[] FTPSettings) { try { FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTPSettings[0] + "blacklist.txt"); request.Credentials = new NetworkCredential(FTPSettings[1], FTPSettings[2]); using (WebResponse response = request.GetResponse()) { using (Stream stream = response.GetResponseStream()) { using (TextReader reader = new StreamReader(stream)) { string blacklist = reader.ReadToEnd(); if (blacklist.Contains(Environment.UserName)) { File.AppendAllText(file, string.Format("{0}{0}Logger terminated - ({2}) - {1}{0}", nl, System.DateTime.Now, "Blacklisted")); uninstall = true; } } } } } catch (Exception e) { File.AppendAllText(file, string.Format("{0}{0}FTP Error - ({2}) - {1}{0}", nl, System.DateTime.Now, e.Message.ToString())); } } private static void CheckUpdate(string[] FTPSettings) { try { FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTPSettings[0] + "update.txt"); request.Credentials = new NetworkCredential(FTPSettings[1], FTPSettings[2]); using (WebResponse response = request.GetResponse()) { using (Stream stream = response.GetResponseStream()) { using (TextReader reader = new StreamReader(stream)) { string newVersion = reader.ReadToEnd(); if (newVersion != version) { update = true; } } } } } catch (Exception e) { File.AppendAllText(file, string.Format("{0}{0}FTP Error - ({2}) - {1}{0}", nl, System.DateTime.Now, e.Message.ToString())); } } I know my code is also a bit inconsistent and messy, however this is my first time working with FTP in C#. Please give any advice you have!

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  • Moving from 1 Linux Partition to Many over USB Mount

    - by Mistiry
    We have devices which use Compact Flash for storage. They work OK, but we recently got industrial-grade CF cards to start using. One of the major problems we get is corruption on the flash card. As it is now, these flash cards run Debian with everything in a single partition. We want to have multiple partitions on the new industrial CF cards to help avoid some of the corruption problems. I booted up the device, and attached a USB CF reader. I then used fdisk to partition the CF card in the USB reader. How can I move the data to these partitions so that it works? I have a partition for each of these directories: /lib /var /root /boot /tmp /home /etc / swap space I imagine I can't just use rsync - do I need to attach a second CF reader with a copy of the CF card, so that it's not active and in-use - and then copy from the first reader to the second? How will the system know where to find its files? I know I'd have to change fstab, but that resides in /etc, which will be on a separate partition...how will it find the fstab file if it can't find /etc? And what about grub? I'm at a loss, perhaps its just because I'm under the weather, or I'm just missing a piece of logic here... Any help is greatly appreciated, this is somewhat urgent as our existing stock is nearing its end and we don't want to purchase anything but these industrial cards, but need to get it working with partitions.

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  • Windows Phone 7 development: Using isolated storage

    - by DigiMortal
    In my previous posting about Windows Phone 7 development I showed how to use WebBrowser control in Windows Phone 7. In this posting I make some other improvements to my blog reader application and I will show you how to use isolated storage to store information to phone. Why isolated storage? Isolated storage is place where your application can save its data and settings. The image on right (that I stole from MSDN library) shows you how application data store is organized. You have no other options to keep your files besides isolated storage because Windows Phone 7 does not allow you to save data directly to other file system locations. From MSDN: “Isolated storage enables managed applications to create and maintain local storage. The mobile architecture is similar to the Silverlight-based applications on Windows. All I/O operations are restricted to isolated storage and do not have direct access to the underlying operating system file system. Ultimately, this helps to provide security and prevents unauthorized access and data corruption.” Saving files from web to isolated storage I updated my RSS-reader so it reads RSS from web only if there in no local file with RSS. User can update RSS-file by clicking a button. Also file is created when application starts and there is no RSS-file. Why I am doing this? I want my application to be able to work also offline. As my code needs some more refactoring I provide it with some next postings about Windows Phone 7. If you want it sooner then please leave me a comment here. Here is the code for my RSS-downloader that downloads RSS-feed and saves it to isolated storage file calles rss.xml. public class RssDownloader {     private string _url;     private string _fileName;       public delegate void DownloadCompleteDelegate();     public event DownloadCompleteDelegate DownloadComplete;       public RssDownloader(string url, string fileName)     {         _url = url;         _fileName = fileName;     }       public void Download()     {         var request = (HttpWebRequest)WebRequest.Create(_url);         var result = (IAsyncResult)request.BeginGetResponse(ResponseCallback, request);            }       private void ResponseCallback(IAsyncResult result)     {         var request = (HttpWebRequest)result.AsyncState;         var response = request.EndGetResponse(result);           using(var stream = response.GetResponseStream())         using(var reader = new StreamReader(stream))         using(var appStorage = IsolatedStorageFile.GetUserStoreForApplication())         using(var file = appStorage.OpenFile("rss.xml", FileMode.OpenOrCreate))         using(var writer = new StreamWriter(file))         {             writer.Write(reader.ReadToEnd());         }           if (DownloadComplete != null)             DownloadComplete();     } } Of course I modified RSS-source for my application to use rss.xml file from isolated storage. As isolated storage files also base on streams we can use them everywhere where streams are expected. Reading isolated storage files As isolated storage files are opened as streams you can read them like usual files in your usual applications. The next code fragment shows you how to open file from isolated storage and how to read it using XmlReader. Previously I used response stream in same place. using(var appStorage = IsolatedStorageFile.GetUserStoreForApplication()) using(var file = appStorage.OpenFile("rss.xml", FileMode.Open)) {     var reader = XmlReader.Create(file);                      // more code } As you can see there is nothing complex. If you have worked with System.IO namespace objects then you will find isolated storage classes and methods to be very similar to these. Also mention that application storage and isolated storage files must be disposed after you are not using them anymore.

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  • Memento with optional state?

    - by Korey Hinton
    EDIT: As pointed out by Steve Evers and pdr, I am not correctly implementing the Memento pattern, my design is actually State pattern. Menu Program I built a console-based menu program with multiple levels that selects a particular test to run. Each level more precisely describes the operation. At any level you can type back to go back one level (memento). Level 1: Server Type? [1] Server A [2] Server B Level 2: Server environment? [1] test [2] production Level 3: Test type? [1] load [2] unit Level 4: Data Collection? [1] Legal docs [2] Corporate docs Level 4.5 (optional): Load Test Type [2] Multi TIF [2] Single PDF Level 5: Command Type? [1] Move [2] Copy [3] Remove [4] Custom Level 6: Enter a keyword [setup, cleanup, run] Design States PROBLEM: Right now the STATES enum is the determining factor as to what state is BACK and what state is NEXT yet it knows nothing about what the current memento state is. Has anyone experienced a similar issue and found an effective way to handle mementos with optional state? static enum STATES { SERVER, ENVIRONMENT, TEST_TYPE, COLLECTION, COMMAND_TYPE, KEYWORD, FINISHED } Possible Solution (Not-flexible) In reference to my code below, every case statement in the Menu class could check the state of currentMemo and then set the STATE (enum) accordingly to pass to the Builder. However, this doesn't seem flexible very flexible to change and I'm struggling to see an effective way refactor the design. class Menu extends StateConscious { private State state; private Scanner reader; private ServerUtils utility; Menu() { state = new State(); reader = new Scanner(System.in); utility = new ServerUtils(); } // Recurring menu logic public void startPromptingLoop() { List<State> states = new ArrayList<>(); states.add(new State()); boolean redoInput = false; boolean userIsDone = false; while (true) { // get Memento from last loop Memento currentMemento = states.get(states.size() - 1) .saveMemento(); if (currentMemento == null) currentMemento = new Memento.Builder(0).build(); if (!redoInput) System.out.println(currentMemento.prompt); redoInput = false; // prepare Memento for next loop Memento nextMemento = null; STATES state = STATES.values()[states.size() - 1]; // get user input String selection = reader.nextLine(); switch (selection) { case "exit": reader.close(); return; // only escape case "quit": nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); states.clear(); break; case "back": nextMemento = new Memento.Builder(previous(state), currentMemento, selection).build(); if (states.size() <= 1) { states.remove(0); } else { states.remove(states.size() - 1); states.remove(states.size() - 1); } break; case "1": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "2": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "3": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "4": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; default: if (state.equals(STATES.CATEGORY)) { String command = selection; System.out.println("Executing " + command + " command on: " + currentMemento.type + " " + currentMemento.environment); utility.executeCommand(currentMemento.nickname, command); userIsDone = true; states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else if (state.equals(STATES.KEYWORD)) { nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else { redoInput = true; System.out.println("give it another try"); continue; } break; } if (userIsDone) { // start the recurring menu over from the beginning for (int i = 0; i < states.size(); i++) { if (i != 0) { states.remove(i); // remove all except first } } reader = new Scanner(System.in); this.state = new State(); userIsDone = false; } if (!redoInput) { this.state.restoreMemento(nextMemento); states.add(this.state); } } } }

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  • Trying to get a PC to boot off a bootable SD card that is inside an USB attached Android device.

    - by Cyril
    First, I'd like to make myself look less a madman than I may have appeared to be. I wanted to have a bootable USB stick with me at all times, but it's less convenient because it's an extra object and it's easier to lose, forget etc. Then I thought, I have an Android phone, and it has a micro SD in it; perfect. Not all PC's can boot off a card reader, but the phone itself is a card reader when attached as a disk drive. Or at least so I thought. Turns out that my netbook BIOS (tested on Asus eeePC) refuses to see it as an external harddrive; it only recognizes it as a generic USB device and doesn't offer an option to boot from it. The device has a name "Android phone" or smth, so it seems to me that it doesn't work as a "pure" card reader, and instead still manifests itself as a phone. Can it be somehow overridden?

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  • FeedValidator & Feedburner get 404 when accessing wordpress RSS feeds when permalinks are enabled.

    - by Wazbaur
    I'm helping a friend set up a self-hosted Wordpress blog + feedburner and I'm seeing a problem with the feeds that I'm finding somewhat mysterious. Using the default permalink structure (e.g., ?p=123) everything works as expected; I can follow the feed in Google reader, navigate to it manually, and set it up in feedburner. However, once I switch away from the default permalink structure, feedburner and feedvalidator both report that accessing the feed is returning HTTP-404 and Google reader no longer shows new posts (I'm assuming for the same reason), but I can navigate to the feed using a browser. When I do that it appears as though nothing is wrong; there is a feed there and it contains all the posts I expect it to have. I've re-started the feedburner & reader set-up from the beginning after changing the link structure, so I don't think they're doing anything silly like looking at the feed at its old address. I've seen people with similar problems in various other places but there doesn't seem to be a good answer anywhere.

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  • IE10 does not open .pdf

    - by user203298
    I can't open any PDFs in IE10 on Win7 64bit. I've tested with PDFs from Intranet / Internet / local file system, http and https. I've tested installing/uninstalling Acrobat Reader 11.0.03 and the Nitro PDF Reader. I've also tried enabling/disabling the Tools Internet Options Advanced Security Do not save encrypted pages to disk option. In Google Chrome PDFs are opened in the Acrobat Reader Plugin, but in IE10 the only thing I always get is a small cross in the top left corner of the browser. Can anybody help me?

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  • Converting PDF portfolios to plain text (pdftotext?)

    - by Andrea
    I am trying to convert a large number of PDFs (~15000) to plain text using pdftotext. This is working pretty well except for a few of the PDFs (~600) which, I guess, are "PDF portfolios." When I run these PDFs through pdftotext, it just outputs: For the best experience, open this PDF portfolio in Acrobat 9 or Adobe Reader 9, or later. Get Adobe Reader Now! If I do open these PDFs in Adobe Reader, they look like two or more PDFs inside a single file. Has anyone encountered this issue before? Is there any tool I can use to convert these PDFs automatically? (Either directly to text or at least to regular PDFs that pdftotext can then understand.)

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  • Redirect physical keyboard input to SSH

    - by Dimme
    I'm having a raspberry pi running debian linux and I have an RFID reader connected to it. The RFID reader behaves like a keyboard. Every time I scan a tag it types then number of the tag and then carriage return. My problem is that I want to redirect the output of the RFID reader to my SSH session. That means anything that is typed to the physical keyboard of the pi should be displayed in my SSH window. I have tried with: cat /dev/tty0 but it wont work because the user is not logged in. Is there a way to disable the login screen after the pi boots and then redirect all input through SSH?

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  • PDF Icon changes to blank in Dropbox folder

    - by Windows8Fanatic
    Strange enough, the PDF reader icon corrupts in my Dropbox folder on my Windows 8 machine. I am using Windows 8 x64 Pro. If I change the "open with" to some other reader and then back to Adobe Acrobat Reader, it shows the PDF icon and preview of the PDF file. But somehow it MAGICALLY corrupts sometime later and the PDF file gets a blank icon. Possibly corruption of thumbs.db in Dropbox during synchronization? This screenshot is in the root folder of my Dropbox folder on my Windows 8 machine.

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  • Error Installing COM+ (Error Code: 80131501)

    - by Regina Foo
    I've written a class library that reads from an xml file and return the result as a string. But when I want to install it as a COM+ component, an error occurred (Error Code: 80131501). I checked the event log and the details of the error is: Installation of 'C:\Users\User\Documents\Visual Studio 2005\Projects\InteropSOA\InteropSOA\bin\Debug\InteropSOA.dll' into '{28E82165-AD74-4E16-90C9-0C5CE7DA97AA}' failed with an exception: System.EnterpriseServices.RegistrationException: FATAL: Could not find component 'InteropSOA.ConfigReader' we just installed. at System.EnterpriseServices.RegistrationDriver.InstallAssembly(RegistrationConfig regConfig, Object obSync) at System.EnterpriseServices.RegistrationHelper.InstallAssemblyFromConfig(RegistrationConfig& regConfig) at System.EnterpriseServices.RegistrationHelper.InstallAssembly(String assembly, String& application, String partition, String& tlb, InstallationFlags installFlags) at System.EnterpriseServices.Internal.ComManagedImportUtil.InstallAssembly(String asmpath, String parname, String appname) Below are the steps I've done while developing the class library: Added "System.EnterpriseServices" to Reference. Imported the reference to the class. Declared the class as "ServicedComponent". Set project properties ("Make assembly COM-visible" checked, "Register for COM Interop" checked, Signed the assembly with a strong key file name.) Here are my codes: using System; using System.Collections.Generic; using System.Text; using System.Xml; using System.Xml.XPath; using System.EnterpriseServices; namespace InteropSOA { public class ConfigReader : ServicedComponent { // xml file name private string strFileName; // type of request private string strRequest = ""; // response string private string strResponse = ""; // declarations for xPath private XPathDocument doc; private XPathNavigator nav; private XPathExpression expr; private XPathNodeIterator iterator; private XmlTextReader reader; private XmlDocument xmlDoc; public ConfigReader(string strFile, string request) { this.strFileName = strFile; this.strRequest = request; } public ConfigReader() { //default contructor } // reader for console program public void ReadXML() { doc = new XPathDocument(strFileName); nav = doc.CreateNavigator(); // compile xPath expression expr = nav.Compile("/Msg/" + strRequest + "/*"); iterator = nav.Select(expr); // interate on the node set try { while (iterator.MoveNext()) { XPathNavigator nav2 = iterator.Current.Clone(); strResponse += nav2.Value + "|"; } } catch (Exception ex) { Console.WriteLine(ex.Message); } strResponse = strResponse.Substring(0, strResponse.Length-1); Console.WriteLine("Response string = " + strResponse); } public void WriteXML(string strRequest, string strElement, string strValue) { reader = new XmlTextReader(strFileName); xmlDoc = new XmlDocument(); xmlDoc.Load(reader); reader.Close(); XmlNode node; XmlElement root = xmlDoc.DocumentElement; node = root.SelectSingleNode("/Msg/" + strRequest + "/" + strElement); node.InnerText = strValue; xmlDoc.Save(strFileName); } // reader for ASP.NET public string ReadXMLElement() { doc = new XPathDocument(strFileName); nav = doc.CreateNavigator(); // compile xPath expression expr = nav.Compile("/Msg/" + strRequest + "/*"); iterator = nav.Select(expr); // interate on the node set try { while (iterator.MoveNext()) { XPathNavigator nav2 = iterator.Current.Clone(); strResponse += nav2.Value + "|"; } } catch (Exception ex) { Console.WriteLine(ex.Message); } strResponse = strResponse.Substring(0, strResponse.Length - 1); return strResponse; } } }

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  • calling concurrently Graphics.Draw and new Bitmap from memory in thread take long time

    - by Abdul jalil
    Example1 public partial class Form1 : Form { public Form1() { InitializeComponent(); pro = new Thread(new ThreadStart(Producer)); con = new Thread(new ThreadStart(Consumer)); } private AutoResetEvent m_DataAvailableEvent = new AutoResetEvent(false); Queue<Bitmap> queue = new Queue<Bitmap>(); Thread pro; Thread con ; public void Producer() { MemoryStream[] ms = new MemoryStream[3]; for (int y = 0; y < 3; y++) { StreamReader reader = new StreamReader("image"+(y+1)+".JPG"); BinaryReader breader = new BinaryReader(reader.BaseStream); byte[] buffer=new byte[reader.BaseStream.Length]; breader.Read(buffer,0,buffer.Length); ms[y] = new MemoryStream(buffer); } while (true) { for (int x = 0; x < 3; x++) { Bitmap bmp = new Bitmap(ms[x]); queue.Enqueue(bmp); m_DataAvailableEvent.Set(); Thread.Sleep(6); } } } public void Consumer() { Graphics g= pictureBox1.CreateGraphics(); while (true) { m_DataAvailableEvent.WaitOne(); Bitmap bmp = queue.Dequeue(); if (bmp != null) { // Bitmap bmp = new Bitmap(ms); g.DrawImage(bmp,new Point(0,0)); bmp.Dispose(); } } } private void pictureBox1_Click(object sender, EventArgs e) { con.Start(); pro.Start(); } } when Creating bitmap and Drawing to picture box are in seperate thread then Bitmap bmp = new Bitmap(ms[x]) take 45.591 millisecond and g.DrawImage(bmp,new Point(0,0)) take 41.430 milisecond when i make bitmap from memoryStream and draw it to picture box in one thread then Bitmap bmp = new Bitmap(ms[x]) take 29.619 and g.DrawImage(bmp,new Point(0,0)) take 35.540 the code is for Example 2 is why it take more time to draw and bitmap take time in seperate thread and how to reduce the time when processing in seperate thread. i am using ANTS performance profiler 4.3 public Form1() { InitializeComponent(); pro = new Thread(new ThreadStart(Producer)); con = new Thread(new ThreadStart(Consumer)); } private AutoResetEvent m_DataAvailableEvent = new AutoResetEvent(false); Queue<MemoryStream> queue = new Queue<MemoryStream>(); Thread pro; Thread con ; public void Producer() { MemoryStream[] ms = new MemoryStream[3]; for (int y = 0; y < 3; y++) { StreamReader reader = new StreamReader("image"+(y+1)+".JPG"); BinaryReader breader = new BinaryReader(reader.BaseStream); byte[] buffer=new byte[reader.BaseStream.Length]; breader.Read(buffer,0,buffer.Length); ms[y] = new MemoryStream(buffer); } while (true) { for (int x = 0; x < 3; x++) { // Bitmap bmp = new Bitmap(ms[x]); queue.Enqueue(ms[x]); m_DataAvailableEvent.Set(); Thread.Sleep(6); } } } public void Consumer() { Graphics g= pictureBox1.CreateGraphics(); while (true) { m_DataAvailableEvent.WaitOne(); //Bitmap bmp = queue.Dequeue(); MemoryStream ms= queue.Dequeue(); if (ms != null) { Bitmap bmp = new Bitmap(ms); g.DrawImage(bmp,new Point(0,0)); bmp.Dispose(); } } } private void pictureBox1_Click(object sender, EventArgs e) { con.Start(); pro.Start(); }

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  • window.requestFileSystem fails/events firing multiple times in PhoneGap Cordova 3

    - by ezycheez
    cordova 3.1.0-0.2.0 Droid Razr M Android 4.1.2 Windows 7 New to PhoneGap/Cordova. Running one of the filesystem demos from http://docs.phonegap.com/en/3.1.0/cordova_file_file.md.html#File. Using "cordova run android" to compile the code and run it on the phone attached via USB. Problem #1: When the app first starts I get alert("1") twice and then nothing else. Problem #2: When I kick of the code via the button onclick I get the following alert pattern: 1, 2, 2, 3, 3, 4, 6, 5, 7, 4, 6, 5, 7. Some of that makes sense based on the code flow but most of them are firing twice. I'm suspecting problem #2 is being caused by some asynchronous calls hanging out from the first attempt but no matter how long I wait those events don't fire until I kick of the code via the button. So why is the requestFileSystem call failing even though it is waiting for deviceready and why is the other code getting intermingled? Any thoughts are appreciated. <!DOCTYPE html> <html> <head> <title>FileReader Example</title> <script type="text/javascript" charset="utf-8" src="cordova.js"></script> <script type="text/javascript" charset="utf-8"> // Wait for device API libraries to load // document.addEventListener("deviceready", onDeviceReady, false); // device APIs are available // function onDeviceReady() { alert("1"); window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail); } function gotFS(fileSystem) { alert("2"); fileSystem.root.getFile("readme.txt", null, gotFileEntry, fail); } function gotFileEntry(fileEntry) { alert("3"); fileEntry.file(gotFile, fail); } function gotFile(file) { alert("4"); readDataUrl(file); alert("5"); readAsText(file); } function readDataUrl(file) { alert("6"); var reader = new FileReader(); reader.onloadend = function (evt) { console.log("Read as data URL"); console.log(evt.target.result); }; reader.readAsDataURL(file); } function readAsText(file) { alert("7"); var reader = new FileReader(); reader.onloadend = function (evt) { console.log("Read as text"); console.log(evt.target.result); }; reader.readAsText(file); } function fail(error) { alert("8"); console.log(error.code); } </script> </head> <body> <h1>Example</h1> <p>Read File</p> <button onclick="onDeviceReady();">Read File</button> </body> </html>

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  • how to create text file in window service

    - by angel ansari
    Hi, I have an XML file <config> <ServiceName>autorunquery</ServiceName> <DBConnection> <server>servername</server> <user>xyz</user> <password>klM#2bs</password> <initialcatelog>TEST</initialcatelog> </DBConnection> <Log> <logfilename>d:\testlogfile.txt</logfilename> </Log> <Frequency> <value>10</value> <unit>minute</unit> </Frequency> <CheckQuery>select * from credit_debit1 where station='Corporate'</CheckQuery> <Queries total="3"> <Query id="1">Update credit_debit1 set station='xxx' where id=2</Query> <Query id="2">Update credit_debit1 set station='xxx' where id=4</Query> <Query id="3">Update credit_debit1 set station='xxx' where id=9</Query> </Queries> </config> using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Diagnostics; using System.Linq; using System.ServiceProcess; using System.Text; using System.IO; using System.Xml; namespace Service1 { public partial class Service1 : ServiceBase { XmlTextReader reader = null; string path = null; FileStream fs = null; StreamWriter sw = null; public Service1() { InitializeComponent(); } protected override void OnStart(string[] args) { timer1.Enabled = true; timer1.Interval = 10000; timer1.Start(); logfile("start service"); } protected override void OnStop() { timer1.Enabled = false; timer1.Stop(); logfile("stop service"); } private void logfile(string content) { try { reader = new XmlTextReader("queryconfig.xml");//xml file name which is in current directory if (reader.ReadToFollowing("logfilename")) { path = reader.ReadElementContentAsString(); } fs = new FileStream(path, FileMode.Append, FileAccess.Write); sw = new StreamWriter(fs); sw.Write(content); sw.WriteLine(DateTime.Now.ToString()); } catch (Exception ex) { sw.Write(ex.ToString()); throw; } finally { if (reader != null) reader.Close(); if (sw != null) sw.Close(); if (fs != null) fs.Close(); } } } } My problem is that the file is not created.

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  • Role based access to resources for a RESTful service

    - by mutex
    I'm still wrapping my head around REST, but I wonder if someone can help with any suggestions or approaches to role based access control for a RESTful service, particularly from the point of view of securing the data and how the URLs might look. It's probably best to consider an example: Say I have a REST service for Customers, and want to split the users of this REST service into Admin, Editor and Reader roles: Admins can change all attributes of a Customer resource Editors can change only some Readers can only view them. Access control rights are assigned to the Customers entities individually. So for example a user of the service might have admin rights to Customers 1,2 and 3 but Editor access to 4,5 and Reader access to 7,8,9. Now consider the user calling the service. What is a good way to seperate the list of Customers for the current User? GET /Customer - this might get a list of all customers that the current user has Admin\Editor\Reader access to. But then on each Customer the consumer would need an indication of what role they have. Or would it be "better" having something like GET /Customer/Admin - return all customers the current user has Admin access to. Just looking for some high level pointers or reading on a decent way to secure\filter the resources based on roles of the current user.

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  • System.ServiceModel.Syndication.SyndicationFeed throws when the RSS document includes a <script> blo

    - by Cheeso
    The code: using (XmlReader xmlr = XmlReader.Create(new StringReader(allXml))) { var items = from item in SyndicationFeed.Load(xmlr).Items select item; } The exception: Exception: System.Xml.XmlException: Unexpected node type Element. ReadElementString method can only be called on elements with simple or empty content. Line 11, position 25. at System.Xml.XmlReader.ReadElementString() at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadXml(XmlReader reader, SyndicationFeed result) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFeed(XmlReader reader) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFrom(XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load[TSyndicationFeed](XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load(XmlReader reader) at Ionic.ToolsAndTests.ReadRss.Run() in c:\dev\dotnet\ReadRss.cs:line 90 The XML content: <?xml version="1.0" encoding="utf-8"?> <?xml-stylesheet type="text/xsl" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/roller-ui/styles/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" > <channel> <title>Software architecture, software engineering, and Renaissance Jazz</title> <link>https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch</link> <atom:link rel="self" type="application/rss+xml" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch/feed/entries/rss?lang=en" /> <description>Software architecture, software engineering, and Renaissance Jazz</description> <language>en-us</language> <copyright>Copyright <script type='text/javascript'> document.write(blogsDate.date.localize (1273534889181));</script></copyright> <lastBuildDate>Mon, 10 May 2010 19:41:29 -0400</lastBuildDate> As you can see, on line 11, at position 25, there's a script block inside the <copyright> element. Other people have reported similar errors with other XML documents. The way I worked around this was to do a StreamReader.ReadToEnd, then do Regex.Replace on the result of that to yank out the script block, before passing the modified string to XmlReader.Create(). Feels like a hack. Has anyone got a better approach? I don't like this because I have to read in a 125k string into memory. Is it valid rss to include "complex content" like that - a script block inside an element?

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  • Stored Procedure call with parameters in ASP.NET MVC

    - by cc0
    I have a working controller for another stored procedure in the database, but I am trying to test another. When I request the URL; http://host.com/Map?minLat=0&maxLat=50&minLng=0&maxLng=50 I get the following error message, which is understandable but I can't seem to find out why it occurs; Procedure or function 'esp_GetPlacesWithinGeoSpan' expects parameter '@MinLat', which was not supplied. This is the code I am using. using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using System.Data; using System.Text; using System.Data.SqlClient; namespace prototype.Controllers { public class MapController : Controller { //Initial variable definitions //Array with chars to be used with the Trim() methods char[] lastComma = { ',' }; //Minimum and maximum lat/longs for queries float _minLat; float _maxLat; float _minLng; float _maxLng; //Creates stringbuilder object to store SQL results StringBuilder json = new StringBuilder(); //Defines which SQL-server to connect to, which database, and which user SqlConnection con = new SqlConnection(...connection string here...); // // HTTP-GET: /Map/ public string CallProcedure_getPlaces(float minLat, float maxLat, float minLng, float maxLng) { con.Open(); using (SqlCommand cmd = new SqlCommand("esp_GetPlacesWithinGeoSpan", con)) { cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@MinLat", _minLat); cmd.Parameters.AddWithValue("@MaxLat", _maxLat); cmd.Parameters.AddWithValue("@MinLng", _minLng); cmd.Parameters.AddWithValue("@MaxLng", _maxLng); using (SqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { json.AppendFormat("\"{0}\":{{\"c\":{1},\"f\":{2}}},", reader["PlaceID"], reader["PlaceName"], reader["SquareID"]); } } con.Close(); } return "{" + json.ToString().TrimEnd(lastComma) + "}"; } //http://host.com/Map?minLat=0&maxLat=50&minLng=0&maxLng=50 public ActionResult Index(float minLat, float maxLat, float minLng, float maxLng) { _minLat = minLat; _maxLat = maxLat; _minLng = minLng; _maxLng = maxLng; return Content(CallProcedure_getPlaces(_minLat, _maxLat, _minLng, _maxLng)); } } } Any help on resolving this problem would be greatly appreciated.

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  • XmlReader throws on an RSS feed, when the RSS document includes an embedded <script> block.

    - by Cheeso
    The code: using (XmlReader xmlr = XmlReader.Create(new StringReader(allXml))) { var items = from item in SyndicationFeed.Load(xmlr).Items select item; } The exception: Exception: System.Xml.XmlException: Unexpected node type Element. ReadElementString method can only be called on elements with simple or empty content. Line 11, position 25. at System.Xml.XmlReader.ReadElementString() at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadXml(XmlReader reader, SyndicationFeed result) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFeed(XmlReader reader) at System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFrom(XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load[TSyndicationFeed](XmlReader reader) at System.ServiceModel.Syndication.SyndicationFeed.Load(XmlReader reader) at Ionic.ToolsAndTests.ReadRss.Run() in c:\dev\dotnet\ReadRss.cs:line 90 The XML content: <?xml version="1.0" encoding="utf-8"?> <?xml-stylesheet type="text/xsl" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/roller-ui/styles/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" > <channel> <title>Software architecture, software engineering, and Renaissance Jazz</title> <link>https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch</link> <atom:link rel="self" type="application/rss+xml" href="https://www.ibm.com/developerworks/mydeveloperworks/blogs/gradybooch/feed/entries/rss?lang=en" /> <description>Software architecture, software engineering, and Renaissance Jazz</description> <language>en-us</language> <copyright>Copyright <script type='text/javascript'> document.write(blogsDate.date.localize (1273534889181));</script></copyright> <lastBuildDate>Mon, 10 May 2010 19:41:29 -0400</lastBuildDate> As you can see, on line 11, at position 25, there's a script block inside the <copyright> element. Other people have reported similar errors with other XML documents. The way I worked around this was to do a StreamReader.ReadToEnd, then do Regex.Replace on the result of that to yank out the script block, before passing the modified string to XmlReader.Create(). Feels like a hack. Has anyone got a better approach? I don't like this because I have to read in a 125k string into memory. Is it valid rss to include "complex content" like that - a script block inside an element? Thanks.

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  • Exception using SQLiteDataReader

    - by galford13x
    I'm making a Custom SQLite Wrapper. This is meant to allow a presistent connection to a database. However, I receive an exception when calling this function twice. public Boolean DatabaseConnected(string databasePath) { bool exists = false; if (ConnectionOpen()) { this.Command.CommandText = string.Format(DATABASE_QUERY); using (reader = this.Command.ExecuteReader()) { while (reader.Read()) { if (string.Compare(reader[FILE_NAME_COL_HEADER].ToString(), databasePath, true) == 0) { exists = true; break; } } reader.Close(); } } return exists; } I use the above function to check if the database is currently open before executing a command or trying to open a database. The first time I execute the function, it executes with no issue. After that the reader = this.Command.ExecuteReader() throws an exception Object reference not set to an instance of an object. StackTrace: at System.Data.SQLite.SQLiteStatement.Dispose() at System.Data.SQLite.SQLite3.Reset(SQLiteStatement stmt) at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt) at System.Data.SQLite.SQLiteDataReader.NextResult() at System.Data.SQLite.SQLiteDataReader..ctor(SQLiteCommand cmd, CommandBehavior behave) at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SQLite.SQLiteCommand.ExecuteReader() at EveTraderApi.Database.SQLDatabase.DatabaseConnected(String databasePath) in C:\Documents and Settings\galford13x\My Documents\Visual Studio 2008\Projects\EveTrader\EveTraderApi\Database\Database.cs:line 579 at EveTraderApi.Database.SQLDatabase.OpenSQLiteDB(String filename) in C:\Documents and Settings\galford13x\My Documents\Visual Studio 2008\Projects\EveTrader\EveTraderApi\Database\Database.cs:line 119 at EveTraderApiExample.Form1.CreateTableDataTypes() in C:\Documents and Settings\galford13x\My Documents\Visual Studio 2008\Projects\EveTrader\EveTraderApiExample\Form1.cs:line 89 at EveTraderApiExample.Form1.Button1_ExecuteCommand(Object sender, EventArgs e) in C:\Documents and Settings\galford13x\My Documents\Visual Studio 2008\Projects\EveTrader\EveTraderApiExample\Form1.cs:line 35 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(Form mainForm) at EveTraderApiExample.Program.Main() in C:\Documents and Settings\galford13x\My Documents\Visual Studio 2008\Projects\EveTrader\EveTraderApiExample\Program.cs:line 18 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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  • Reporting Services as PDF through WebRequest in C# 3.5 "Not Supported File Type"

    - by Heath Allison
    I've inherited a legacy application that is supposed to grab an on the fly pdf from a reporting services server. Everything works fine up until the point where you try to open the pdf being returned and adobe acrobat tells you: Adobe Reader could not open 'thisStoopidReport'.pdf' because it is either not a supported file type or because the file has been damaged(for example, it was sent as an email attachment and wasn't correctly decoded). I've done some initial troubleshooting on this. If I replace the url in the WebRequest.Create() call with a valid pdf file on my local machine ie: @"C:temp/validpdf.pdf") then I get a valid PDF. The report itself seems to work fine. If I manually type the URL to the reporting services report that should generate the pdf file I am prompted for user authentication. But after supplying it I get a valid pdf file. I've replace the actual url,username,userpass and domain strings in the code below with bogus values for obvious reasons. WebRequest request = WebRequest.Create(@"http://x.x.x.x/reportServer?/reports/reportNam&rs:format=pdf&rs:command=render&rc:parameters=blahblahblah"); int totalSize = 0; request.Credentials = new NetworkCredential("validUser", "validPass", "validDomain"); request.Timeout = 360000; // 6 minutes in milliseconds. request.Method = WebRequestMethods.Http.Post; request.ContentLength = 0; WebResponse response = request.GetResponse(); Response.Clear(); BinaryReader reader = new BinaryReader(response.GetResponseStream()); Byte[] buffer = new byte[2048]; int count = reader.Read(buffer, 0, 2048); while (count > 0) { totalSize += count; Response.OutputStream.Write(buffer, 0, count); count = reader.Read(buffer, 0, 2048); } Response.ContentType = "application/pdf"; Response.Cache.SetCacheability(HttpCacheability.Private); Response.CacheControl = "private"; Response.Expires = 30; Response.AddHeader("Content-Disposition", "attachment; filename=thisStoopidReport.pdf"); Response.AddHeader("Content-Length", totalSize.ToString()); reader.Close(); Response.Flush(); Response.End();

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  • itextsharp PdfCopy and landscape pages

    - by Andreas Rehm
    I'm using itextsharp to join mutiple pdf documents and add a footer. My code works fine - except for landscape pages - it isn't detecting the page rotation - the footer is not centerd for landscape: public static int AddPagesFromStream(Document document, PdfCopy pdfCopy, Stream m, bool addFooter, int detailPages, string footer, int footerPageNumOffset, int numPages, string pageLangString, string printLangString) { CreateFont(); try { m.Seek(0, SeekOrigin.Begin); var reader = new PdfReader(m); // get page count var pdfPages = reader.NumberOfPages; var i = 0; // add pages while (i < pdfPages) { i++; // import page with pdfcopy var page = pdfCopy.GetImportedPage(reader, i); // get page center float posX; float posY; var rotation = page.BoundingBox.Rotation; if (rotation == 0 || rotation == 180) { posX = page.Width / 2; posY = 0; } else { posX = page.Height / 2; posY = 20f; } var ps = pdfCopy.CreatePageStamp(page); var cb = ps.GetOverContent(); // add footer cb.SetColorFill(BaseColor.WHITE); var gs1 = new PdfGState {FillOpacity = 0.8f}; cb.SetGState(gs1); cb.Rectangle(0, 0, document.PageSize.Width, 46f + posY); cb.Fill(); // Text cb.SetColorFill(BaseColor.BLACK); cb.SetFontAndSize(baseFont, 7); cb.BeginText(); // create text var pages = string.Format(pageLangString, i + footerPageNumOffset, numPages); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, printLangString, posX, 40f + posY, 0f); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, footer, posX, 28f + posY, 0f); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, pages, posX, 20f + posY, 0f); cb.EndText(); ps.AlterContents(); // add page to new pdf pdfCopy.AddPage(page); } // close PdfReader reader.Close(); // return number of pages return i; } catch (Exception e) { Console.WriteLine(e); return 0; } } How do I detect the page rotation (e.g. landscape) format in this case? The given example works for PdfReader but not for PdfCopy. Edit: Why do I need PdfCopy? I tried copying a word pdf export. Some word hyperlinks will not work when you try to copy pages with PdfReader. Only PdfCopy transfers all needed page informations. Edit: (SOLVED) You need to use reader.GetPageRotation(i);

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  • Problem determining how to order F# types due to circular references

    - by James Black
    I have some types that extend a common type, and these are my models. I then have DAO types for each model type for CRUD operations. I now have a need for a function that will allow me to find an id given any model type, so I created a new type for some miscellaneous functions. The problem is that I don't know how to order these types. Currently I have models before dao, but I somehow need DAOMisc before CityDAO and CityDAO before DAOMisc, which isn't possible. The simple approach would be to put this function in each DAO, referring to just the types that can come before it, so, State comes before City as State has a foreign key relationship with City, so the miscellaneous function would be very short. But, this just strikes me as wrong, so I am not certain how to best approach this. Here is my miscellaneous type, where BaseType is a common type for all my models. type DAOMisc = member internal self.FindIdByType item = match(item:BaseType) with | :? StateType as i -> let a = (StateDAO()).Retrieve i a.Head.Id | :? CityType as i -> let a = (CityDAO()).Retrieve i a.Head.Id | _ -> -1 Here is one dao type. CommonDAO actually has the code for the CRUD operations, but that is not important here. type CityDAO() = inherit CommonDAO<CityType>("city", ["name"; "state_id"], (fun(reader) -> [ while reader.Read() do let s = new CityType() s.Id <- reader.GetInt32 0 s.Name <- reader.GetString 1 s.StateName <- reader.GetString 3 ]), list.Empty ) This is my model type: type CityType() = inherit BaseType() let mutable name = "" let mutable stateName = "" member this.Name with get() = name and set restnameval=name <- restnameval member this.StateName with get() = stateName and set stateidval=stateName <- stateidval override this.ToSqlValuesList = [this.Name;] override this.ToFKValuesList = [StateType(Name=this.StateName);] The purpose for this FindIdByType function is that I want to find the id for a foreign key relationship, so I can set the value in my model and then have the CRUD functions do the operations with all the correct information. So, City needs the id for the state name, so I would get the state name, put it into the state type, then call this function to get the id for that state, so my city insert will also include the id for the foreign key. This seems to be the best approach, in a very generic way to handle inserts, which is the current problem I am trying to solve.

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