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  • Why isn't my WPF Datagrid showing data?

    - by Edward Tanguay
    This walkthrough says you can create a WPF datagrid in one line but doesn't give a full example. So I created an example using a generic list and connected it to the WPF datagrid, but it doesn't show any data. What do I need to change on the code below to get it to show data in the datagrid? ANSWER: This code works now: XAML: <Window x:Class="TestDatagrid345.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:toolkit="http://schemas.microsoft.com/wpf/2008/toolkit" xmlns:local="clr-namespace:TestDatagrid345" Title="Window1" Height="300" Width="300" Loaded="Window_Loaded"> <StackPanel> <toolkit:DataGrid ItemsSource="{Binding}"/> </StackPanel> </Window> Code Behind: using System.Collections.Generic; using System.Windows; namespace TestDatagrid345 { public partial class Window1 : Window { private List<Customer> _customers = new List<Customer>(); public List<Customer> Customers { get { return _customers; }} public Window1() { InitializeComponent(); } private void Window_Loaded(object sender, RoutedEventArgs e) { DataContext = Customers; Customers.Add(new Customer { FirstName = "Tom", LastName = "Jones" }); Customers.Add(new Customer { FirstName = "Joe", LastName = "Thompson" }); Customers.Add(new Customer { FirstName = "Jill", LastName = "Smith" }); } } }

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  • Programmatically access the CIL for a .NET type

    - by Jordão
    Is there a straighforward library that I can use to access the CIL for a .NET type? Let me demonstrate what I want the fictitious CilExtractor to do: [Serializable] public class Type_For_Extract_Cil_Test { private int _field = 3; public int Method(int value) { checked { return _field + value; } } } [Test] public void Extract_Cil_For_Type_Test() { string actualCil = CilExtractor.ExtractCil(typeof(Type_For_Extract_Cil_Test)); string expectedCil = @" .class public auto ansi serializable beforefieldinit Type_For_Extract_Cil_Test extends [mscorlib]System.Object { .method public hidebysig specialname rtspecialname instance void .ctor() cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldc.i4.3 L_0002: stfld int32 Type_For_Extract_Cil_Test::_field L_0007: ldarg.0 L_0008: call instance void [mscorlib]System.Object::.ctor() L_000d: ret } .method public hidebysig instance int32 Method(int32 'value') cil managed { .maxstack 8 L_0000: ldarg.0 L_0001: ldfld int32 Type_For_Extract_Cil_Test::_field L_0006: ldarg.1 L_0007: add.ovf L_0008: ret } .field private int32 _field }"; // indentations and code formatting issues apart, this should succeed Assert.AreEqual(expectedCil, actualCil); } I know I can do this with Mono.Cecil or Reflector, but I also know I have to write a lot of code to achieve this. Since Reflector already does this on its UI, isn't there a simple way to access this functionality, like with a simple method call? Are there other libraries that are better suited to this specific scenario?

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  • How to get the stacktrace in a mobile device?

    - by Daniel Moura
    I'm getting a NullPointerException in a Nokia S40. I want to know what is causing this exception. The device shows: NullPointerException java/lang/NullPointerException This error only occurs in the device, running in the emulator the application works fine. I use microlog to debug my application. But the application works fine if the log is enabled. Is there a way to get the stack trace when I get this NullPointerException? I don't need all details like the line number just which method cause this exception. UPDATE: I installed the same application in another Nokia S40 and the same error didn't occur. Nokia 2660 - error Nokia 6131 - no error UPDATE 2: Somehow I find what was causing the NullPointerException. import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Graphics; public class OuterClass extends Canvas { private Config config; public OuterClass() { this.config = new Config(); } public void paint(Graphics graphics) { HelperClass helper = new HelperClass(this.config); helper.doStuff(); } public void dispose() { this.config = null; } public class Config implements IConfig { public int getSomething() { // ... } } } public class HelperClass { private IConfig config; public HelperClass(IConfig) { this.config = config; } public doStuff() { config.getSomething(); // Here is thrown NullPointerException } } In some situations a thread is started and call the OuterClass.dispose() before the helper.doStuff() causing the NPE. I think when I enabled the log it made the thread slower and helper.doStuff() was called when I expected it to be called.

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  • HTTPService/ResultEvent with Flex 3.2 versus Flex >= 3.5

    - by Julian
    Hey everybody, through a design decission or what-so-ever Adobe changed the content of the ResultEvent fired by a HTTPService Object. Take a look at following example: var httpService:HTTPService = myHTTPServices.getResults(); httpService.addEventListener(ResultEvent.RESULT,resultHandler); httpService.send(); /** * Handels the login process */ function resultHandler(event:ResultEvent):void { // get http service var httpService = (event.target as HTTPService); // do something } It works like a charm with Flex 3.2. But when I try to compile it with Flex 3.5 or Flex 4.0 event.target as HTTPService is null. I figured out that event.target is now an instance of HTTPOperation. That is interesting because I can't find HTTPOperation in the langref. However, I think what Flash Builder's debugger means is mx.rpc.http.Operation. The debugger also shows that event.target has a private attribute httpService which is the instance I expected to get with event.target. But it's private, so event.target.httpService doesn't work. If I only want to remove the EventListener I can cast event.target as EventDispatcher. But I need to use methods from HTTPService. So: How can I get the HTTPService instance from the ResultEvent? Any help would be appreciated. Thanks! J.

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  • Created nested model setting a property on nested model before save

    - by CWitty
    I have two models a Company and a User the Company has_many :users and the User belongs_to :company. I have a form such as: <%= form_for @company, data: {toggle: :validator}, novalidate: "novalidate", html: {role: :form} do |f| %> company fields Then in there I have <%= f.fields_for :users, @company.users.build do |user_form| %> A bunch of user fields It posts the data with the nested attributes of users_attributes: {"0" => {name: "Chad"}} But it doesn't create the user only the company object. Company Model class Company < ActiveRecord::Base has_many :users, dependent: :destroy has_many :contacts, dependent: :destroy accepts_nested_attributes_for :users accepts_nested_attributes_for :contacts attr_accessor :card_token, :users_attributes before_create :create_company_customer_token before_create :create_admin_user before_destroy :set_deleted_flag validates_presence_of :name, :phone_number private def create_admin_user self.users.first.admin = true end def set_deleted_flag self.deleted = true save users.each do |u| u.destroy end false end def create_company_customer_token begin customer = Stripe::Customer.create(description: "Company: #{self.name}", card: self.card_token, plan: self.plan) self.stripe_customer_id = customer['id'] rescue Stripe::StripeError => e self.errors.add(:stripe_customer_id, "Looks like we are having an issue at the moment, please try again shortly") @logger ||= Rails.logger @logger.error(e) end end end User Model class User < ActiveRecord::Base include Clearance::User has_many :messages belongs_to :company before_destroy :set_deleted_flag after_create :send_welcome_email validates_presence_of :first_name, :last_name validates_uniqueness_of :email, scope: :company_id, conditions: -> { where.not(deleted: true) } def name "#{first_name} #{last_name}" end private def set_deleted_flag self.deleted = true save end def send_welcome_email UserMailer.welcome_email(self).deliver end end

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  • What approach should I take to export my iPhone contacts to Gmail?

    - by codeLes
    I'm on the iPhone OS3, I want to get my contacts on my phone in sync with my Google contacts, but I don't want to lose what is currently in my phone. So far I have been under the impression that by just turning the Google Sync on that it will overwrite the info on my phone. I don't currently have all the info on my phone in Google contacts so this would not be desired. Other than manually inputting all the info from my phone into my Google Contacts, what approach could I take to get that info on the Google cloud so that I can turn on sync without fear of losing any information?

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  • how to Install SproutCore 1.0 on Ubuntu 9.10

    - by Leif
    I am trying to intall SproutCore, but it doesn't work. I followed the instructions in How to Install SproutCore in Virtual Enviroment but after the installation I cant start sc in the commandline. So, I hope you understand, because my English is very bad... greetings, Leif

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  • EmguCV: Can't find ColorType abstract class

    - by roverred
    EmguCV ColorType wiki I'm trying to create a ColorType abstract class variable but it says the type or namespace does not exist. However I have access to the classes that extend it. I also tried adding all Emgu.CV libraries and have all the references and .dll files in the bin folder. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Drawing; using Emgu.CV; using Emgu.CV.Util; using Emgu.CV.GPU; using Emgu.CV.ML; using Emgu.CV.OCR; using Emgu.CV.OpenCL; using Emgu.CV.Stitching; using Emgu.CV.VideoStab; using Emgu.CV.Structure; using Emgu.CV.UI; using Emgu.CV.CvEnum; namespace mySpace { class foo { private ColorType the color; //invalid can't find ColorType private ColorType myColor = new Gray(); //invalid } } Any ideas? Thanks for any help.

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  • Simple Xml list parsing problem

    - by Hubidubi
    I have this xml: <root> <fruitlist> <apple>4</apple> <apple>5</apple> <orange>2</orange> <orange>6</orange> </fruitlist> </root> I'm writing a parser class, although I can't figure out how to deal with multiple node types. I can easily parse a list that contains only one node type (eg. just apples, not oranges) @ElementList(name = "fruitlist") private List<Apple> exercises; with more than one node type it also wants so parse non Apple nodes which doesn't work. I also tried to make another list for oranges, but it doen't work, I can't use fruitlist name more than once. @ElementList(name = "fruitlist", entry = "orange") private List<Orange> exercises; The ideal would be two seperate list for both node types. Hubi EDIT: After more searching & fiddling this question is a duplicate: Inheritance with Simple XML Framework

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  • What is a good and safe way of sharing certificates?

    - by Kaustubh P
    I have a few certificates, that are used as authentication, to ssh into my servers on the Amazon cloud. I rotate those certificates weekly, manually. My question is, I need to share the certificates with some colleagues, a few on the LAN, and a few in another part of the country. What is the best practice to share the certificate? My initial thoughts were Dropbox and email. We dont host dedicated email servers with encryption and all, and dont have a VPN. Thanks.

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  • Can the same ssh key be used to access two different users on the same server?

    - by Nick
    I have an new ubuntu (hardy 8.04) server, it has two users, User1 and User2. User1 is listed in sudoers. I appended my public ssh key to authorized_keys in /home/user1/.ssh/authorized_keys, changed the permissions on user1/.ssh/ to 700 and user1/.ssh/authorized_keys to 600 and both file and folder are owned my User1. Then added I User1 to sshd_config (AllowUsers User1). This works and I can login into User1 debug1: Offering public key: /Users/nick/.ssh/id_rsa debug1: Server accepts key: pkalg ssh-rsa blen 277 debug1: Authentication succeeded (publickey). debug1: channel 0: new [client-session] debug1: Entering interactive session. Last login: Mon Mar 15 09:51:01 2010 from 86.141.61.197 I then copied the authorized_keys file to /home/user2/.shh/ and changed the permissions and ownership and added User2 to AllowUsers in sshd_config (AllowUsers User1 User2). Now when I try to login to User2 it will not authenticate the same public key. debug1: Offering public key: /Users/nick/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/nick/.ssh/identity debug1: Trying private key: /Users/nick/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey). Am I missing something fundamental about the way ssh works? Thanks in advance, Nick

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  • Is it possible to rent an IP address to mask the server real IP address?

    - by net-girl
    A customer would like to lease an IP address and point it to a dedicated web server with the intention of "masking" the server's IP address so it would be difficult to tell where the site is hosted. I found a company that leases IP addresses here: http://www.webhostingtalk.com/showthread.php?t=1191688 Is this even possible? Can they rent an IP address from a 3rd party in order to hide the server's IP address? Update: My client will be hosting a government leaks site and is trying to become Raid-Proof similar to what the pirate bay did: http://torrentfreak.com/pirate-bay-moves-to-the-cloud-becomes-raid-proof-121017/ Only that I'm worried about using a reverse proxy because of the latency it could cause having the app servers hosted in one data center and the load balancer/reverse proxy in other and also having to pay twice for bandwidth.

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  • Entity Framework lazy loading doesn't work from other thread

    - by Thomas Levesque
    Hi, I just found out that lazy loading in Entity Framework only works from the thread that created the ObjectContext. To illustrate the problem, I did a simple test, with a simple model containing just 2 entities : Person and Address. Here's the code : private static void TestSingleThread() { using (var context = new TestDBContext()) { foreach (var p in context.Person) { Console.WriteLine("{0} lives in {1}.", p.Name, p.Address.City); } } } private static void TestMultiThread() { using (var context = new TestDBContext()) { foreach (var p in context.Person) { Person p2 = p; // to avoid capturing the loop variable ThreadPool.QueueUserWorkItem( arg => { Console.WriteLine("{0} lives in {1}.", p2.Name, p2.Address.City); }); } } } The TestSingleThread method works fine, the Address property is lazily loaded. But in TestMultiThread, I get a NullReferenceException on p2.Address.City, because p2.Address is null. It that a bug ? Is this the way it's supposed to work ? If so, is there any documentation mentioning it ? I couldn't find anything on the subject on MSDN or Google... And more importantly, is there a workaround ? (other than explicitly calling LoadProperty from the worker thread...) Any help would be very appreciated PS: I'm using VS2010, so it's EF 4.0. I don't know if it was the same in the previous version of EF...

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  • Use Maven to trigger a wsgen & wsimport in a row, using wsdlLocation

    - by ben
    I have hard times using maven to generate my client. So Please refer to http://stackoverflow.com/questions/2131001/creating-a-web-service-client-directly-from-the-source for the first part of my question. To keep it simple and short, I want to go from here (a file in src/main/java) : package com.example.maven.jaxws.helloservice; import javax.jws.WebService; @WebService public class Hello { public String sayHello(String param) { ; return "Hello " + param; } } to there : /** * This class was generated by the JAX-WS RI. * JAX-WS RI 2.1.7-b01- * Generated source version: 2.1 * */ @WebServiceClient(name = "HelloService", targetNamespace = "http://helloservice.jaxws.maven.example.com/", wsdlLocation = "http://localhost:8080/test/") public class HelloService extends Service { private final static URL HELLOSERVICE_WSDL_LOCATION; private final static Logger logger = Logger.getLogger(com.example.wsimport.HelloService.class.getName()); ...etc using only 1 pom.xml file. Please note the wsdlLocation set on the end. The pom.xml file will probably use both maven-jaxws-plugin wsgen AND wsimport with some tricky configuration to achieve this.

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  • Fluent NHibernate Self Referencing Many To Many

    - by Jeremy
    I have an entity called Books that can have a list of more books called RelatedBooks. The abbreviated Book entity looks something likes this: public class Book { public virtual long Id { get; private set; } public virtual IList<Book> RelatedBooks { get; set; } } Here is what the mapping looks like for this relationship HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks") .Cascade.SaveUpdate(); Here is a sample of the data that is then generated in the RelatedBooks table: BookId RelatedBookId 1 2 1 3 The problem happens when I Try to delete a book. If I delete the book that has an ID of 1, everything works ok and the RelatedBooks table has the two corresponding records removed. However if I try to delete the book with an ID of 3, I get the error "The DELETE statement conflicted with the REFERENCE constraint "FK5B54405174BAB605". The conflict occurred in database "Test", table "dbo.RelatedBooks", column 'RelatedBookId'". Basically what is happening is the Book cannot be deleted because the record in the RelatedBooks table that has a RelatedBookId of 3 is never deleted. How do I get that record to be deleted when I delete a book? EDIT After changing the Cascade from SaveUpdate() to All(), the same problem still exists if I try to delete the Book with an ID of 3. Also with Cascade set to All(), if delete the Book with and ID of 1, then all 3 books (ID's: 1, 2 and 3) are deleted so that won't work either. Looking at the SQL that is executed when the Book.Delete() method is called when I delete the Book with an ID of 3, it looks like the SELECT statement is looking at the wrong column (which I assume means that the SQL DELETE statment would make the same mistake, therefore never removing that record). Here is the SQL for the RelatedBook SELECT relatedboo0_.BookId as BookId3_ , relatedboo0_.RelatedBookId as RelatedB2_3_ , book1_.Id as Id14_0_ FROM RelatedBooks relatedboo0_ left outer join [Book] book1_ on relatedboo0_.RelatedBookId=book1_.Id WHERE relatedboo0_.BookId=3 The WHERE statment should look something like this for thie particular case: WHERE relatedboo0_.RelatedBookId = 3 SOLUTION Here is what I had to do to get it working for all cases Mapping: HasManyToMany(x => x.RelatedBooks) .ParentKeyColumn("BookId") .ChildKeyColumn("RelatedBookId") .Table("RelatedBooks"); Code: var book = currentSession.Get<Book>(bookId); if (book != null) { //Remove all of the Related Books book.RelatedBooks.Clear(); //Get all other books that have this book as a related book var booksWithRelated = currentSession.CreateCriteria<Book>() .CreateAlias("RelatedBooks", "br") .Add(Restrictions.Eq("br.Id", book.Id)) .List<Book>(); //Remove this book as a Related Book for all other Books foreach (var tempBook in booksWithRelated) { tempBook.RelatedBooks.Remove(book); tempBook.Save(); } //Delete the book book.Delete(); }

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  • NHibernate, transactions and TransactionScope

    - by Erik
    I'm trying to find the best solution to handle transaction in a web application that uses NHibernate. We use a IHttpModule and at HttpApplication.BeginRequest we open a new session and we bind it to the HttpContext with ManagedWebSessionContext.Bind(context, session); We close and unbind the session on HttpApplication.EndRequest. In our Repository base class, we always wrapped a transaction around our SaveOrUpdate, Delete, Get methods like, according to best practice: public virtual void Save(T entity) { var session = DependencyManager.Resolve<ISession>(); using (var transaction = session.BeginTransaction()) { session.SaveOrUpdate(entity); transaction.Commit(); } } But then this doesn't work, if you need to put a transaction somewhere in e.g. a Application service to include several repository calls to Save, Delete, etc.. So what we tried is to use TransactionScope (I didn't want to write my own transactionmanager). To test that this worked, I use an outer TransactionScope that doesn't call .Complete() to force a rollback: Repository Save(): public virtual void Save(T entity) { using (TransactionScope scope = new TransactionScope()) { var session = Depe.ndencyManager.Resolve<ISession>(); session.SaveOrUpdate(entity); scope.Complete(); } } The block that uses the repository: TestEntity testEntity = new TestEntity { Text = "Test1" }; ITestRepository testRepository = DependencyManager.Resolve<ITestRepository>(); testRepository.Save(testEntity); using (var scope = new TransactionScope()) { TestEntity entityToChange = testRepository.GetById(testEntity.Id); entityToChange.Text = "TestChanged"; testRepository.Save(entityToChange); } TestEntity entityChanged = testRepository.GetById(testEntity.Id); Assert.That(entityChanged.Text, Is.EqualTo("Test1")); This doesn't work. But to me if NHibernate supports TransactionScope it would! What happens is that there is no ROLLBACK at all in the database but when the testRepository.GetById(testEntity.Id); statement is executed a UPDATE with SET Text = "TestCahgned" is fired instead (It should have been fired between BEGIN TRAN and ROLLBACK TRAN). NHibernate reads the value from the level1 cache and fires a UPDATE to the database. Not expected behaviour!? From what I understand whenever a rollback is done in the scope of NHibernate you also need to close and unbind the current session. My question is: Does anyone know of a good way to do this using TransactionScope and ManagedWebSessionContext?

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  • Passing data to Winforms UI using BeginInvoke

    - by Bi
    I am a C# newbie and have a class that needs to pass row information to a grid in the windows form. What is the best way to do it? I have put in some example code for better understanding. public class GUIController { private My_Main myWindow; public GUIController( My_Main window ) { myWindow = window; } public void UpdateProducts( List<myProduct> newList ) { object[] row = new object[3]; foreach (myProduct product in newList) { row[0] = product.Name; row[1] = product.Status; row[2] = product.Day; //HOW DO I USE BeginInvoke HERE? } } } And the form class below: public class My_Main : Form { //HOW DO I GO ABOUT USING THIS DELEGATE? public delegate void ProductDelegate( string[] row ); public static My_Main theWindow = null; static void Main( ) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); theWindow = new My_Main(); Application.Run(theWindow); } private void My_Main_Load( object sender, EventArgs e ) { /// Create GUIController and pass the window object gui = new GUIController( this ); } public void PopulateGrid( string[] row ) { ProductsGrid.Rows.Add(row); ProductsGrid.Update(); } }

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  • C# Static constructors design problem - need to specify parameter

    - by Neil Dobson
    I have a re-occurring design problem with certain classes which require one-off initialization with a parameter such as the name of an external resource such as a config file. For example, I have a corelib project which provides application-wide logging, configuration and general helper methods. This object could use a static constructor to initialize itself but it need access to a config file which it can't find itself. I can see a couple of solutions, but both of these don't seem quite right: 1) Use a constructor with a parameter. But then each object which requires corelib functionality should also know the name of the config file, so this has to be passed around the application. Also if I implemented corelib as a singleton I would also have to pass the config file as a parameter to the GetInstance method, which I believe is also not right. 2) Create a static property or method to pass through the config file or other external parameter. I have sort of used the latter method and created a Load method which initializes an inner class which it passes through the config file in the constructor. Then this inner class is exposed through a public property MyCoreLib. public static class CoreLib { private static MyCoreLib myCoreLib; public static void Load(string configFile) { myCoreLib = new MyCoreLib(configFile); } public static MyCoreLib MyCoreLib { get { return myCoreLib; } } public class MyCoreLib { private string configFile; public MyCoreLib(string configFile) { this.configFile = configFile; } public void DoSomething() { } } } I'm still not happy though. The inner class is not initialized until you call the load method, so that needs to be considered anywhere the MyCoreLib is accessed. Also there is nothing to stop someone calling the load method again. Any other patterns or ideas how to accomplish this?

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  • How can I simulate this application hang scenario?

    - by Pwninstein
    I have a Windows Forms app that itself launches different threads to do different kinds of work. Occasionally, ALL threads (including the UI thread) become frozen, and my app becomes unresponsive. I've decided it may be a Garbage Collector-related issue, as the GC will freeze all managed threads temporarily. To verify that just managed threads are frozen, I spin up an unmanaged one that writes to a "heartbeat" file with a timestamp every second, and it is not affected (i.e. it still runs): public delegate void ThreadProc(); [DllImport("UnmanagedTest.dll", EntryPoint = "MyUnmanagedFunction")] public static extern void MyUnmanagedFunction(); [DllImport("kernel32")] public static extern IntPtr CreateThread( IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, out uint dwThreadId); uint threadId; ThreadProc proc = new ThreadProc(MyUnmanagedFunction); IntPtr functionPointer = Marshal.GetFunctionPointerForDelegate(proc); IntPtr threadHandle = CreateThread(IntPtr.Zero, 0, functionPointer, IntPtr.Zero, 0, out threadId); My Question is: how can I simulate this situation, where all managed threads are suspended but unmanaged ones keep on spinning? My first stab: private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(new ThreadStart(delegate { new Hanger(); GC.Collect(2, GCCollectionMode.Forced); })); t.Start(); } class Hanger{ private int[] m_Integers = new int[10000000]; public Hanger() { } ~Hanger() { Console.WriteLine("About to hang..."); //This doesn't reproduce the desired behavior //while (true) ; //Neither does this //Thread.Sleep(System.Threading.Timeout.Infinite); } } Thanks in advance!!

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  • Automating ftp command line application redirecting I/O in .Net

    - by SoMoS
    Hello, I'm trying to automate the ftp client that Windows includes redirecting the I/O from the process. What I'm doing is starting the process from my application and trying to read what the client prints on the screen and sending my commands to it. The problem is that I can not read almost any data sent by the ftp client. Some data is present but most data is not read. That's the code I have until now. Public Sub Start() process = New Diagnostics.Process() process.StartInfo.FileName = "ftp.exe" #'' The command is on the path process.StartInfo.CreateNoWindow = True process.StartInfo.RedirectStandardInput = True process.StartInfo.RedirectStandardOutput = True process.StartInfo.UseShellExecute = False process.Start() process.StandardInput.AutoFlush = True process.BeginOutputReadLine() End Sub #'' takes data from the stdout Private Sub process_OutputDataReceived(ByVal sender As Object, ByVal e As System.Diagnostics.DataReceivedEventArgs) Handles process.OutputDataReceived #'' At this moment here there is code to show the stdout at a textbox End Sub #'' sends data to stdin Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click process.StandardInput.WriteLine(Me.TextEdit1.Text) End Sub Now when I execute this for example and send ? I just get the first line (and I should get a lot more). Or when I send the open command I should receive an A but nothing is received. Any ideas? Another question is ... when a console applications writes on the screen it always does that by writing at the stdout or the stderr isn't it?

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  • How to upload a huge(GBs) file to a webserver

    - by Aman Jain
    Hi I want to create a web interface that will allow users to upload huge files. These files are actually vmdk files(Virtual Machine Disks), and they can be multi GB in size. I think this makes the situation different from normal file uploads(10-20MB file uploads). So any advise on how to achieve the same in an efficient and fault tolerant way, is appreciated. Thanks Aman Jain

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  • Not able to use spring Beans outside container . Always picking up WebSphere Context

    - by Abhijit
    We have the a whole lot of spring bean defined in our project which we deploy in Websphere ^. One example being the following: oracle.jdbc.driver.OracleDriver jdbc:oracle:thin:@oracle:1521:OASIS oasis_owner o3ngin33r Now we have a service locator class like following private static ServiceLocator serviceLocator = new ServiceLocator(); private static ApplicationContext beanFactory = new ClassPathXmlApplicationContext(APPLICATION_CONTEXT_LOCATION); protected ServiceLocator() { } public ApplicationContext getBeanFactory() { return beanFactory; } public static ServiceLocator getInstance() { return serviceLocator; Now when I am trying to do this from my jUnit ServiceLocator.getInstance().getBean("oasJdbcData"; getting the following exception Caused by: javax.naming.ServiceUnavailableException: Could not obtain an initial context due to a communication failure. Since no provider URL was specified, the default provider URL of "corbaloc:iiop:[email protected]:2809/NameService" was used. Make sure that any bootstrap address information in the URL is correct and that the target name server is running. Possible causes other than an incorrect bootstrap address or unavailable name server include the network environment and workstation network configuration. [Root exception is org.omg.CORBA.TRANSIENT: java.net.ConnectException: Connection refused: connect:host=192.168.255.1,port=2809 vmcid: IBM minor code: E02 completed: No] at com.ibm.ws.naming.util.WsnInitCtxFactory.mapInitialReferenceFailure(WsnInitCtxFactory.java:1968) at com.ibm.ws.naming.util.WsnInitCtxFactory.mergeWsnNSProperties(WsnInitCtxFactory.java:1172) at com.ibm.ws.naming.util.WsnInitCtxFactory.getRootContextFromServer(WsnInitCtxFactory.java:720) at com.ibm.ws.naming.util.WsnInitCtxFactory.getRootJndiContext(WsnInitCtxFactory.java:643) at com.ibm.ws.naming.util.WsnInitCtxFactory.getInitialContextInternal(WsnInitCtxFactory.java:489) at com.ibm.ws.naming.util.WsnInitCtx.getContext(WsnInitCtx.java:113) at com.ibm.ws.naming.util.WsnInitCtx.getContextIfNull(WsnInitCtx.java:428) at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:144) at javax.naming.InitialContext.lookup(InitialContext.java:361) at org.springframework.jndi.JndiTemplate$1.doInContext(JndiTemplate.java:155) at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:88) at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:153) at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:178) at org.springframework.jndi.JndiLocatorSupport.lookup(JndiLocatorSupport.java:104) at org.springframework.jndi.JndiObjectLocator.lookup(JndiObjectLocator.java:105) at org.springframework.jndi.JndiObjectFactoryBean.lookupWithFallback(JndiObjectFactoryBean.java:200) at org.springframework.jndi.JndiObjectFactoryBean.afterPropertiesSet(JndiObjectFactoryBean.java:186) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1368) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1334) ... 33 more which clearly shows it is looking for IntialContext of Websphere which I dont want Any body can tell me what I am doing wrong?

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  • Using EJB in Wicket WebPage

    - by Errandir
    When I'm using @EJB annotation to access stateless EJB through remote interface in common HttpServlet, it works OK: public class ListMsgs extends HttpServlet { @EJB private Msgs msgsRI; ... protected void processRequest(...) ... { List msgs = msgsRI.getAll(); ... } ... } But when I'm trying the same thing in Wicket WebPage, I'm getting null in return for bean: public class ListM extends WebPage { @EJB private Msgs msgsRI; ... public ListM() { List msgs = msgsRI.getAll(); // NullPointerException ... } ... } The several lines of this “Unexpected RuntimeException” are: WicketMessage: Can't instantiate page using constructor public testapp.web.ListM() Root cause: java.lang.NullPointerException at testapp.web.ListM.<init>(ListM.java:22) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.wicket.session.DefaultPageFactory.createPage(DefaultPageFactory.java:192) at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:57) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:298) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:320) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:234) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479) at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138) at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) .... There are ejb-module with bean and web-module with servlet and wicket web page deployed to GlassFish v2.1.1 server (if it makes any sense). What should I do to use my enterprise bean through remote interface in wicket webpage?

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  • RelayCommand sender from ItemsControl item

    - by Padu Merloti
    I've been using MVVM's RelayCommand with success to bind actions to XAML, but I'm having a small problem with my ItemsControl. <ItemsControl ItemsSource="{Binding Devices}" > <ItemsControl.ItemTemplate> <DataTemplate> <Grid Width="100" Margin="4" > <Button Command="{Binding Path=SelectDeviceCommand}" > <Grid> <Image Source="img_small.png"></Image> <Image Source="{Binding Path=Logo}" /> </Grid> </Button> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> In my view model: public RelayCommand SelectDeviceCommand { get; set; } private ObservableCollection<Device> Devices; Devices = CreateListOfDevices(); private void InitializeCommands() { SelectDeviceCommand = new RelayCommand((s) => MessageBox.Show(s.ToString())); } How do I define my SelectDeviceCommand in my view model in order to receive object that is bound to that item? My SelectDeviceCommand is not even being called... (but that I guess is because I need to make my Device a mini-viewmodel and implement the SelectDeviceCommand in it, is that correct?)

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