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  • Speeding Up Slow, CPU-Intensive Scrolling in WinForms

    - by S B
    How can I speed up the scrolling of UserControls in a WinForms app.? My main form has trouble scrolling quickly on slow machines--painting for each of the small scroll increments is CPU intensive. My form has roughly fifty UserControls (with multiple fields) positioned one below the other. I’ve tried intercepting OnScroll and UserPaint in order to eliminate some of the unnecessary re-paints for very small scroll events, but the underlying Paint gets called anyway. How can I streamline scrolling on slower machines?

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  • Getting a screenshot of a page using C# - Need help with code

    - by Ender
    I'm writing a specialised crawler and parser for internal use and I require the ability to take a screenshot of a web page in order to check what colours are being used throughout. The program will take in around ten web addresses and will save them as a bitmap image, from there I plan to use LockBits in order to create a list of the five most used colours within the image. To my knowledge it's the easiest way to get the colours used within a web page but if there is an easier way to do it please chime in with your suggestions. Anyway, I was going to use this program until I saw the price tag. I'm also fairly new to C#, having only used it for a few months. Can anyone provide me with a solution to my problem of taking a screenshot of a web page in order to extract the colour scheme? EDIT: Sorry for not getting back to this sooner, but I've been busy with some other things. Anyway, the code seems to work well, but the problem I am having right now is that I am running it within a form, and naturally with Application.Run() being called I cannot run two instances of the same form at once. It recommended Form.showDialog() but that broke everything. Can anyone give me a hand with this code? public static void buildScreenshotFromURL(string url) { int width = 800; int height = 600; using (WebBrowser browser = new WebBrowser()) { browser.Width = width; browser.Height = height; browser.ScrollBarsEnabled = true; // This will be called when the page finishes loading browser.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(OnDocumentCompleted); //browser.DocumentCompleted += OnDocumentCompleted; browser.Navigate(url); // This prevents the application from exiting until // Application.Exit is called // Application.Run() does not work as it cannot be called twice, recommended form.showDialog() // but still issues Application.Run(); } } public static void OnDocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { // Define size of thumbnail neded int thumbSize = 50; // Now that the page is loaded, save it to a bitmap WebBrowser browser = (WebBrowser)sender; // Code edited from example below to make smaller bitmap and save as PNG using (Graphics graphics = browser.CreateGraphics()) { using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height, graphics)) { Rectangle bounds = new Rectangle(0, 0, bitmap.Width, bitmap.Height); browser.DrawToBitmap(bitmap, bounds); Bitmap thumbBitmap = new Bitmap(bitmap.GetThumbnailImage(thumbSize, thumbSize, thumbCall, IntPtr.Zero)); thumbBitmap.Save("screenshot.png", ImageFormat.Png); handleImage(thumbBitmap); } }

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  • Select a Master Page in Web Developer Express

    - by JP
    The dialog box for adding a web form to a web project in Visual Studio has a checkbox to 'Select Master Page'. This checkbox doesn't exist in the Web Developer Express Edition. Is there a simple alternative to attach a Master Page while adding a new web form in the Express Version?

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  • anchor inside ajax tabs with jquery

    - by junray
    hi, i'm building a faq page and i want to load the content inside a page page via ajax with jqyery tabs. i want to avoid to have different pages for every faq so i want to load the content with and anchor. how can i do? this doesn't work: Accedo alle offerte online

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  • Richfaces modal panel and a4j:keepAlive

    - by mykola
    Hello! I've got unexpected problems with richfaces (3.3.2) modal panel. When i try to open it, browser opens two panels instead of one: one is in the center, another is in the upper left corner. Besides, no fading happens. Also i have three modes: view, edit, new - and when i open my panel it should show either "Create new..." or "Edit..." in the header and actually it shows but not in the header as the latter isn't rendered at all though it should, because i set proper mode in action before opening this modal panel. Besides it works fine on all other pages i've made and there are tens of such pages in my application. I can't understand what's wrong here. The only way to fix it is to remove <a4j:keepAlive/> from the page that is very strange, imho. I'm not sure if code will be usefull here as it works fine everywhere in my application but this only case. So if you put it on your page it will probably work without problems. My only question is: are there any hidden or rare problems in interaction of these two elements (<rich:modalPanel> and <a4j:keepAlive>)? Or shall i spent another two or three days searching for some wrong comma, parenthesis or whatever in my code? :) For most curious. Panel itself: <!-- there's no outer form --> <rich:modalPanel id="panel" autosized="true" minWidth="300" minHeight="200"> <f:facet name="header"> <h:panelGroup id="panelHeader"> <h:outputText value="#{msg.new_smth}" rendered="#{MbSmth.newMode}"/> <h:outputText value="#{msg.edit_smth}" rendered="#{MbSmth.editMode}"/> </h:panelGroup> </f:facet> <h:panelGroup id="panelDiv"> <h:form > <!-- fields and buttons --> </h:form> </h:panelGroup> </rich:modalPanel> One of the buttons that open panel: <a4j:commandButton id="addBtn" reRender="panelHeader, panelDiv" value="#{form.add}" oncomplete="#{rich:component('panel')}.show()" action="#{MbSmth.add}" image="create.gif"/> Action invoked on button click: public void add() { curMode = NEW_MODE; // initial mode is VIEW_MODE newSmth = new Smth(); } Mode check: public boolean isNewMode() { return curMode == NEW_MODE; } public boolean isEditMode() { return curMode == EDIT_MODE; }

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  • google maps api v2 - tens of thousands of markers

    - by Adam
    Hello, my problem is with XXk (aka XX000) markers, atm I have 7k markers and will be more, and more, problem is in marker database, because atm this is 4MB (link to my DB http://tinyurl.com/ybau9ce) and problem is, how load that fast? for example DOWNLOAD only this what are show now, DOWNLOAD because load I have with ClusterMarker and problem is not with java but with download that database I think...

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  • DOM Elements with same id and jQuery

    - by Steve
    Hi I have multiple elements with the same structure in my application. Second div element's id varies as per the comment id in the db which is unique. There are elements with the id 'vote_up' and 'vote_down'. This gets repeated for each comment.What happens is that, as I mentioned, there are multiple comments. I want to perform an Ajax request. First of this structure functions properly using ajax, but the rest does an http request. Btw I am developing a rails application and I am using jQuery. <div id="post_comment"> john<i> says </i> Comment<br/> <div id="comment_10_div"> **<form action="/comments/vote_up" id="vote_up" method="post">** <div style="margin:0;padding:0;display:inline"> <input name="authenticity_token" type="hidden" value="w873BgYHLxQmadUalzMRUC+1ql4AtP3U7f78dT8x9ho=" /> </div> <input id="Comment_place_id" name="Comment[post_id]" type="hidden" value="3" /> <input id="Comment_id" name="Comment[id]" type="hidden" value="10" /> <input id="Comment_user_id" name="Comment[user_id]" type="hidden" value="2" /> <input name="commit" type="submit" value="Vote up" /> </form> <label id="comment_10">10</label> **<form action="/comments/vote_down" id="vote_down" method="post">** <div style="margin:0;padding:0;display:inline"> <input name="authenticity_token" type="hidden" value="w873BgYHLxQmadUalzMRUC+1ql4AtP3U7f78dT8x9ho=" /> </div> <input id="Comment_place_id" name="Comment[place_id]" type="hidden" value="3" /> <input id="Comment_id" name="Comment[id]" type="hidden" value="10" /> <input id="Comment_user_id" name="Comment[user_id]" type="hidden" value="2" /> <input name="commit" type="submit" value="Vote Down" /> </form> </div> Can you please help me to solve this Thanks

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  • PayPal sandbox Buy Now Problem

    - by Tushar Ahirrao
    Hi , I have paypal sandbox test account. I want to create a 'buy Now' button. I am trying it with GWT. But its even not working with simple HTML form. It displays a 'Buy Now' button on HTML page and after clicking on it redirects to PayPal site. Where it ask to login to buy product but after that it goes on displying message: The email address or password you have entered does not match our records. Please try again. I am using buyer user to purchase product. I am pretty sure about the username and password. Providing here the simple HTML form which I am trying: <form action="https://www.paypal.com/cgi-bin/webscr" method="post" id="payPalForm"> <input type="hidden" name="item_number" value="1"> <input type="hidden" name="cmd" value="_xclick"> <input type="hidden" name="no_note" value="1"> <input type="hidden" name="business" value="[email protected]"> <input type="hidden" name="lc" value="US"> <input type="hidden" name="button_subtype" value="services"> <input type="hidden" name="cn" value="Add special instructions to the seller"> <input type="hidden" name="no_shipping" value="2"> <input type="hidden" name="rm" value="1"> <input type="hidden" name="bn" value="PP-BuyNowBF:btn_paynow_SM.gif:NonHosted"> <input type="hidden" name="variables" value="http://google.com"> <input type="hidden" name="cancel_return" value="http://google.com"> <input type="hidden" name="notify_url" value="http://google.com"> <input type="hidden" name="return" value="http://freelanceswitch.com/payment-complete /"> <input type="hidden" name="currency_code" value="USD"> <input name="item_name" type="hidden" value="Deal Name"> <input name="amount" type="hidden" value="500"> <input type="submit" name="Submit" value="Submit"> </form> Please advice. Thank you.

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  • C# input dialog as a function.

    - by mcoolbeth
    In C#, I would like to create a function (method) that has the following behavior: When called, create and show a form. Wait for the user to enter or select a value on the form. Return the selected value. Is there a concise, readable way to implement this function?

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  • How should I use https in Ruby on Rails

    - by Daniel Cukier
    I'm developing an application in Rails (2.3.4) and there are some parts that need to run over a secure protocol, for example, the login form, the credit card form, etc. How can I do just these pages be https, and all other pages remain http? How can I test ssl in development environment?

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  • Python - How to pickle yourself?

    - by Mark
    I want my class to implement Save and Load functions which simply do a pickle of the class. But apparently you cannot use 'self' in the fashion below. How can you do this? self = cPickle.load(f) cPickle.dump(self,f,2)

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  • Guidance related to Paypal Integration Using Codeigniter

    - by anum
    I need some guidance related to Paypal Integration. Its not similar to regular cart. After checkout, the site offers a form for payment option, either its paypal or some other payment process. The form directs to controller after submit. A array exists which contains all items value, from here on how can I proceed to paypal site. How can I do this?

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  • Is it possible to pass the value in php file using Ajax.Request?

    - by user309381
    function reload(form) { var val = $('seltab').getValue(); new Ajax.Request('Website.php?$cat = val', { method:'post', onSuccess: function(transport){ ..... code in php: echo "<select id = seltab onchange='reload(this.form)'>"; $querysel = "SELECT title_id,author FROM authors NATURAL JOIN books"; $result1 = mysql_query($querysel) ; while($rowID = mysql_fetch_assoc($result1)) {

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  • Is there a jQuery webscrapper out there?

    - by victor hugo
    I'm trying to pullout some info from an external site using jQuery and Adobe AIR. Right now I'm using a hidden div and jQuery's load function to load fragments of the external site, once the info is loaded I parse some info with selectors. This is fine but it's kinda dirty and I need to perform this several times (don't want to need many hidden divs). Just wondering if anybody knows a good webscrapper written in jQuery or maybe another method I'm missing

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  • Display processing page then redirect when complete

    - by user285379
    I have a script that takes a while. I'd like to display a page during the processing of the script then redirect when the process is complete. E.g.: form.php - processing.php - display_result.php I would like that processing.php is displayed immediately after form is submitted showing (Processing your information, please wait...) Once processing is complete the page should be redirected to display_result.php Is there anyway to sort of flush the content to the browser before processing begins, then redirect when the process is complete?

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  • AJAX not working with jQuery

    - by Alexander Corotchi
    I want to load in <div class="test"> some content from another URL ex: http://someurl.com/default.aspx. I tried this code: $(".test").load( 'http://someurl.com/default.aspx'); But it doesn't work. With local file it works, but not with http://... Can somebody help me? Thanks

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  • Localized License Agreements in Visual Studio Setup Projects?

    - by byanity
    I've added a EULA using VS2005's built in License Agreement UI form in a Setup Project. This form has a LicenseFile property that you set to an RTF file that displays the EULA. Assuming I have a number of translated RTFs, how can I make the EULA that is displayed point to the appropriate RTF localized to the user's Windows CurrentCulture settings? I've seen some articles on WiX but at this point I need to stick with our current installation setup. Thanks!

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  • CSSFriendly Problem just after publish to web server

    - by Hossein Margani
    Hi every one! I created a website and used css frienfly adapters for Menu, TreeView and GridView, all was correct, but after publishing it to my great web server, the menus and treeviews didn't load and there is just some bullets! Please help me, what should I do? you can see my work: http://jds.cot.ir left side I have a menu which did not load.

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  • ASP.NET XHTML Strict Validation & autocomplete=off

    - by Alyn
    We have an ASP.NET form with the following doctype:- We need to add autocomplete=off (by setting the TextBox property of AutoCompleteType="Disabled") to the input fields but still need the form to pass XHTML Validation (yes I know it's not XHTML valid because of this). Is there anythign we can do to ignore the autocomplete=off?? Something like:- !ATTLIST input autocomplete CDATA #IMPLIED Thanks in advance. Al.

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