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  • When is it useful to define your own delegates instead of using the generics?

    - by Carlos
    I've been going through some old code, where I came across some custom defined delegates, which are used thus: private delegate void ListenDelegate(UdpClient listener, bool multicast); private void ListenOn(UdpClient listener, bool multicast) { new ListenDelegate(_ListenLoop).BeginInvoke(listener, multicast, null, null); } With some of the new .NET framework versions, you can do the following: private void ListenOn(UdpClient listener, bool multicast) { new Action<UdpClient, bool>(_ListenLoop).BeginInvoke(listener, multicast, null, null); } This ought to be exactly the same. Is there any point in defining your own delegates, when the generic delegates seem to do the same job with less space? Or have I missed something about the generics that makes them not equivalent?

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  • PHP/codeigniter - use of exit()

    - by Patrick
    I have a few pages that require login, so all controllers that link to these pages start with $this->checkSession(); //...rest of the code CheckSession should verify the session is still live, otherwise display a message and stop the execution of the rest of the code in the controller: function checkSession() { if (!$this->session->userdata('is_logged_in')) { //the session has expired! $data['main'] = 'confirmation_message'; $data['title'] = "Session expired"; $this->load->vars($data); $this->load->view('template'); exit(); } } . I was expecting these instructions to happen in sequence, but I only get a blank page. How can I make sure exit() gets executed only after all views are loaded?

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  • copying files from one windows server to another

    - by Saju Pillai
    I have to copy a file from a windows 2008 server to one or more windows 2008 servers. I have accounts on the target machines with enough privileges to let me use powershell remoting and use wmi. The remote machines do not run ftp, ssh or similar file transfer mechanisms. I am not allowed to install software or run new services on the target server. I can run services on the source server. The file copy action must be initiated from the source server. i.e. I cannot manually logon to the target machines and initiate the copy - though an automated way to do this is acceptable. Is it possible to use WMI or PowerShell Remoting to push or pull the file from the source to the target ? Is it possible to invoke some sort of built in http client or invoke the BITS service/agent on the remote servers to pull files from the source server ? Other suggestions please.

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  • Thread Question

    - by Polaris
    I have method which create background thread to make some action. In this background thread I create object. But this object while creating in runtime give me an exception : The calling thread must be STA, because many UI components require this. I know that I must use Dispatcher to make reflect something to UI. But in this case I just create an object and dont iteract with UI. This is my code: public void SomeMethod() { BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += new DoWorkEventHandler(Background_Method); worker.RunWorkerAsync(); } void Background_Method(object sender, DoWorkEventArgs e) { TreeView tv = new TreeView(); } How can I create objects in background thread? I use WPF application

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  • Can layouts be chosen by Grails controllers?

    - by maerics
    I'm building a CMS as a learning exercise in Grails and would like to give content managers the ability to choose between different HTML page structures (e.g. 2 column, 3 column, etc). Grails Layouts seem like a logical choice but is it possible for a Grails controller to explicitly name which layout will be used for rendering? Ideally there would be a layout option to the render method, per Ruby on Rails but I don't see anything like it. It seems like it might be possible using the applyLayout method by passing the name of the layout but this requires each GSP page to explicitly request layout (annoying overhead per-page) rather than using Layout by Convention. Any ideas?

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  • Pattern to iterate Request Params

    - by NOOBie
    My view is not a strongly typed view and I need to iterate through Request Params in the controller action to determine the values posted. Is there a better way to iterate through the nameValueCollection AllKeys? I am currently looping through the Request Params and setting values appropriately. foreach (var key in Request.Params.AllKeys) { if (key.Equals("CustomerId")) queryObject.CustomerId = Request.Params[key]; else if (key.Equals("OrderId")) queryObject.OrderId= Request.Params[key]; //and so on } I see a considerable amount of repetition in this code. Is there a better way to handle this?

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  • How do I create a collection_select in the View of a model that belongs_to another?

    - by Angela
    In the _form for creating a new Contact, I want to be able to create a drop-down which allows the User to select the Campaign the Contact will belong to. In the controller, I created a collection called @campaigns. And I tried to use the following but not getting it to work: <p> <%= f.label :campaign_id %><br /> <%= f.collection_select(:contact, :campaign_id, @campaigns, :id, :name) %> </p> Basically, I want to display the available :name of the campaigns, and then submit the campaign_id associated with the selected campaign to the Contact model when it gets saved.

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  • rails - caches_action expire_action

    - by mark
    Hi I want to expire a cached action and wondered how to generate the correct reference. #controller caches_action :index, :layout => false #generates this fragment which works fine views/0.0.0.0:3000/article/someid/posts #sweeper ... expire_action article_posts_path(:article_id => post.article) # results in this Expired fragment: views//en/article/someid/posts (0.0ms) So this is almost ok, except the host is missing. What do I do that supplies this to the expire_action method? Thanks in advance.

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  • How can I use a prefix for the fields in my strongly typed View?

    - by deadtime
    Hi, I have an EditProfile action in my PersonController, that finds a Person object by ID and does return View(person). The EditProfile view has a bunch of fields that should be filled in with the information from the Person object. One of the fields is named "Person.FirstName", and is not filled in automatically when the View is rendered. However, if I rename the textbox to "FirstName", it gets filled in. My question is: How can I specify to the view that it should use the "Person" prefix when filling in the information from the Person object? The reason I want to do this is because of consistency - in some of my views I allow the user to edit more than one object at the same time, and use prefixes in order to bind these correctly.

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  • Best way to handle enable/disable of UIButtons on iPhone

    - by Anonymous
    I have an increase button and a decrease button, both of which affect a variable. The variable has a minimum and the decrease button will be disabled once that minimum is reached. Likewise for the maximum value of the variable. In my controller, I have two IBActions for both the increase and decrease actions, and two IBOutlets, in order to disable the buttons accordingly. At the bottom of my KVO statement to handle the value change, I have: increaseButton.enabled = value != MAX; decreaseButton.enabled = value != MIN; While this code is functional, I can't help but feel that feel this is a naive approach to the problem, especially since this requires 4 connections. Is there a better solution to this, one that uses fewer connections?

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  • TextBox loses text when InvokeRequired == false

    - by Tom
    This is modified code I found on this site. When appending text to a TextBox and InvoveRequired is false the text will display in the box but the next time the function is called and InvokeRequired is true the text string placed by the first call is lost (""). Multiple calls when InvokeRequired is true work as expected. comBox is a type TextBox with multline = true. Any help would be appreciated. public void LogComText(string comText, bool newline) { if (comBox.InvokeRequired) { comBox.BeginInvoke(new Action(delegate { LogComText(comText, newline); })); return; } comBox.AppendText(comText); if (newline) comBox.AppendText(Environment.NewLine); }

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  • asp.net mvc ignoreRoute with webservice

    - by boz
    Howdy, Im adding the filevistacontrol to my asp.net MVC web application. I have a media.aspx page that is ignored in the routing with routes.IgnoreRoute("media.aspx"); This works successfully and serves a standard webforms page. Upon adding the filevistacontrol, I can't seem to ignore any calls the control makes to it's webservice. Eg the following ignoreRoute still seems to get picked up by the MvcHandler. routes.IgnoreRoute("FileVistaControl/filevista.asmx/GetLanguageFile/"); The exception thrown is: 'The RouteData must contain an item named 'controller' with a non-empty string value' Thanks in advance.

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  • Jquery .$.ajax is not working

    - by Saravanan I M
    I am using $.ajax for facebook invite and calling the url (Yii framework controller). The below code is not working. $.ajax is not working. function FacebookInviteFriends() { FB.ui ( { method : 'apprequests', data: '', display: 'dialog', title : 'Invite a Friend', message: 'I just sent you an invitation to play My Game.', filters: ['app_non_users'] }, function(response) { alert("start"); if (response && response.to) { alert("inside if"); $.ajax({ url: 'http://localhost:83/invitechips/createRecord', type: 'POST', data: {id : response.to} }).done(function() { alert( "Data Saved: "); }); } else { alert("inside else"); } } ); }

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  • Mimic Sublime Text multiselect in Notepad++ using autohotkey

    - by capnhud
    In sublime text 2 you can multi select(cursor) lines by holding ctrl+alt+arrow key (up/down). In notepad++ you can accomplish the same thing by holding ctrl and clicking the additional lines(areas) you would like to edit. I figured I could use a autohotkey script to accomplish the same functionality. So I tried #IfWinActive, ahk_class Notepad++ ^!Down::^Click but each time that I try to load the script I get Error at Line 2 Line Text: ^Click Error: This line does not contain a recognized action the program will exit then I tried #IfWinActive, ahk_class Notepad++ ^!Down::send ^Click but that shows up as ETXClick in notepad++ What more do I need to get this script to work only for Notepad++

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  • How to implement message passing in GNUradio?

    - by xuandl
    I need to implement message passing, my idea is to make some sort of message source (I inherit from public gr_sync_block) that works as a controller for another block (it has to send a message each 6 minutes). I read that is necessary to inherit from gnuradio::block -and by the way, installing grextras is mandatory-. In the .h file I added the #include and inherited from block"class JDFM_API jdfm_control : public gr_sync_block, public gnuradio::block". I know that I have redefine some things like the gnuradio::block constructor but I dont know what msg_signature is, I also don't get the relation between block's parameters and work parameter, the last thing that I am not sure is if I still can use gnuradio-companion if I create a block like this. I haven't been able to find a simple example of messages implementation. If anyone can guide me or show me an example, it would be awesome. Thanks in advance.

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  • Rails 3 Nested Forms

    - by Mike
    I have a Person model and an Address Model: class Person < ActiveRecord::Base has_one :address accepts_nested_attributes_for :address end class Address < ActiveRecord::Base belongs_to :person end In my people controller I have @person.build_address in my new action. My forms builds correctly. The problem is that when I submit the form, a person record and an address record is created but they aren't linked via the address_id column in the Person table. Am I missing a step in the controller? Thanks! New Action UPDATE def new @person = Person.new @person.build_address respond_to do |format| format.html # new.html.erb format.xml { render :xml => @person } end end Form Code UPDATE <%= form_for(@person) do |f| %> <% if @person.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@person.errors.count, "error") %> prohibited this person from being saved:</h2> <ul> <% @person.errors.full_messages.each do |msg| %> <li><%= msg %></li> <% end %> </ul> </div> <% end %> <div class="field"> <%= f.label :first_name %><br /> <%= f.text_field :first_name %> </div> <div class="field"> <%= f.label :last_name %><br /> <%= f.text_field :last_name %> </div> <div class="field"> <%= f.label :email %><br /> <%= f.text_field :email %> </div> <div class="field"> <%= f.label :telephone %><br /> <%= f.text_field :telephone %> </div> <div class="field"> <%= f.label :mobile_phone %><br /> <%= f.text_field :mobile_phone %> </div> <div class="field"> <%= f.label :date_of_birth %><br /> <%= f.date_select :date_of_birth %> </div> <div class="field"> <%= f.label :gender %><br /> <%= f.select(:gender, Person::GENDER_TYPES) %> </div> <div class="field"> <%= f.label :notes %><br /> <%= f.text_area :notes %> </div> <div class="field"> <%= f.label :person_type %><br /> <%= f.select(:person_type, Person::PERSON_TYPES) %> </div> <%= f.fields_for :address do |address_fields| %> <div class="field"> <%= address_fields.label :street_1 %><br /> <%= address_fields.text_field :street_1 %> </div> <div class="field"> <%= address_fields.label :street_2 %><br /> <%= address_fields.text_field :street_2 %> </div> <div class="field"> <%= address_fields.label :city %><br /> <%= address_fields.text_field :city %> </div> <div class="field"> <%= address_fields.label :state %><br /> <%= address_fields.select(:state, Address::STATES) %> </div> <div class="field"> <%= address_fields.label :zip_code %><br /> <%= address_fields.text_field :zip_code %> </div> <% end %> <div class="actions"> <%= f.submit %> </div> <% end %>

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  • Rails routing: how to mix "GET" and "PUT"

    - by thermans
    Not sure how to frame this question (I'm still wrapping my head around Rails). Let's try this: Say I wanted to implement the user side of Ryan Bates' excellent railscast on nested models. (He shows how to implement a survey where you can add and remove questions and answers dynamically). I want the user's side of this: to be able to answer questions and, not in the tutorial, be able to add comments. It seems to me that you have to implement a view that shows the questions and answers, allow selection of the answers, and the input of comments. So there would need to be a way to show the information, but also update the model on input, right? I know I'm not explaining this very well. I hope you understand what I'm getting at. Is it just a question of setting up the right routes? Or is there some controller mojo that needs to happen?

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  • posting data to a site in C#

    - by Michel
    i'm flabbergasted, i've looked at almost every example, but it just doesn't work (the other party says they don't receive my data in the request parameter) I want to do this in code (send some xml data (without the xml declaration) to a uri): <form method="post" action="http://http://100.100.100.100:11111/getinfo"> <input type="text" value="<ps:Balance>100</ps:Balance>" name="request" id="request"> <br><br> <input type="submit" value="go"> </form>

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  • Treeview Slow in IE?!?!

    - by Mike
    I have a treeview with around 200 records that needs to be fully expanded at all times (so no loading on demand). It is inside of an update panel with the updatemode set to conditional. There are other update panels on the page as well that are set to conditional. Depending on user actions the tree may need to be rebuilt by calling databind and updating the updatepanel. Everything works fine in firefox, longest postback about 2 seconds. With IE I have to wait up to 30 seconds sometimes and the action may have nothing to do with the tree just changing a dropdown in its own updatepanel takes forever. I have considered the size of viewstate and just raw HTML generated may be causing the delay but wouldn't that effect both browsers? Anyone have anyideas what is making it so slow in IE??? Thanks!

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  • How can I separate error_messages from two forms on one page?

    - by itkevin
    I have two forms in one view updating the User Profile. One Form is to Update my name etc. and one is to change my password. Profile Form: - form_for @user, :url => account_path do |f| = f.error_messages ...form fields here... Password Form: - form_for @user, :url => account_path do |pf| = pf.error_messages ...password fields here... As you can see they both point to the same update action in the users controller. If I type in a invalid password both error_messages show me the same error message. How can I output separate error messages per form?

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  • Best way to set a default button (or trigger its event in javascript) for an input field, not part of a form

    - by Sheldon Pinkman
    I've got a stand-alone input field, not part of any form. I also got a button, that has some onclick event. When I type something in the input field, and press the Enter key, I want it do effectively press the button, or trigger its onclick event. So that the button is "the input field's default button" so to speak. <input id='myText' type='text' /> <button id='myButton' onclick='DoSomething()'>Do it!</button> I guess I can mess around with the input field's onkeypress or onkeydown events and check for the Enter key, etc. But is there a more 'clean' way, I mean something that associated the button with that input field, so that the button is the 'default action' or something for that field? Note that I'm not inside a form, I am not sending, posting, or submitting something. The DoSomething() function just changes some of the HTML content locally, depending on the text input.

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  • how do I return to the same exact page after posting a form?

    - by William Calleja
    I'm posting data to a page called process.aspx that handles some business logic with the following code: <%@ Page Language="C#" %> <% MyData.process(Request); Response.Redirect("") %> this page I will be calling from a variety of pages. Is there some way of knowing from which page my form was submitted? I was thinking something along the lines of writing: <form id="frmSystem" method="post" action="process.aspx?page=<%= %>"> However I don't know what to write in between the <%= %> to get the current page name. Can anyone help please?

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  • remember passowrd works in ff but not in ie and chrome

    - by jasperdejong
    Hi, It seems that my html login form support remember password in ff but not in ie and chrome. Can anybody tell me why? Here's the code: <form name="login_form" id="login_form" action="" method="POST"> <div class="login_line">name<input name="user_name" id="user_name_id" size="16" maxlength="16" value="" type="text"></div> <div class="login_line">password<input name="password" id="password_id" size="16" maxlength="16" type="password"></div> <div class="login_line">&nbsp;<input class="icon icon_accept" value="login" onclick="javascript:handleFunction('action_login', document.getElementById('user_name_id').value, document.getElementById('password_id').value); return false;" type="submit"></div> </form> <!-- login_form -->

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  • grails mail connection refused

    - by mkoryak
    it seems i have tried the mail config in the way that its docs said, but still i get: Error 500: Executing action [x] of controller [x] caused exception: Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP I am using google apps for my email so [email protected] is using gmail. i cannot get grails to send out a test message on my dev box (win 7). my config is: host = "smtp.gmail.com" port = 465 username = "[email protected]" password = "x" props = ["mail.smtp.auth":"true", "mail.smtp.debug":"true", "mail.smtp.starttls.enable":"true", "mail.smtp.socketFactory.port":"465", "mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory", "mail.smtp.socketFactory.fallback":"false"]

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  • ValidateRequest="false" doesn't work when posting HTML values

    - by Ivan90
    I am developing a personal blog in ASP.NET MVC 1.0. This blog application has Views like "Insert Post", "Edit Post", etc. I need to post a string containing HTML back to the appropriate controller method. That HTML value is being posted from a textarea. I've read that it's necessary to disable ValidateRequest directly on the page with the attribute ValidateRequest = "false" or in the web.config file. When I insert an HTML value in my textarea, I get always the error of 'potential value dangerous'. How can I use ValidateRequest to allow the form element containing HTML values to be posted?

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