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  • How to use multiple restrictions in C# Generics properly?

    - by plouh
    I am attempting to bind c# generics to a class and an interface like this: public class WizardPage<T> where T : UserControl, IWizardControl { private T page; public WizardPage( T page ) { this.page = page; } } And use it with this: public MyControl : UserControl, IWizardControl { //... } Somehow C# doesn't seem to be able to decide that MyControl is a proper instance of T as public class Wizard<T> where T : UserControl, IWizardControl { private WizardPage<T> Page1; public Wizard( MyControl control ) { this.Page1 = new WizardPage(control); } } fails with error The best overloaded method match for 'Controls.WizardPage.WizardPage(T)' has some invalid arguments Am I doing something wrong or is this just not going to work?

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  • What is the efficient way to make a permission system?

    - by WEBProject
    Currently im just using something like: in the DB Table: access: home,register,login and then in each page: if(!Functions::has_rights('content')) { Functions::noAccess(); } is there more efficient way to do it, php & MySQL? i may want to gain access even to several parts a page, for example: user can read a page, but doesnt comment to it, and I dont want to build a separate system to each module. Thanks in advanced, Tal.

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  • My HTML5 web app crashes and I have no clue how to debug

    - by Shouvik
    Hi All, I have written a word game using HTML5 canvas tag and a little bit of audio. I developed the application on the chrome web browser on a linux system. Recently during the testing phase it was tried on safari 5.0.3 on Mac and the webpage froze. Not just the canvas element, but interactive element on the page froze. I have at some times experienced this problem on google chrome when I was developing but since the console did not throw any error before this happened, I did not give it much credence. Now as per requirements I am supposed to support both chrome and safari but this dismal performance on safari has left me shocked and I cannot see what error can be thrown which might lead to such a situation. Worse yet the CPU usage on using this application peaks to 70-80percent on my 2yr old macbook running ubuntu... I can only but pity the person who uses mac to operate this app, which undoubtedly is a heavier OS. Could someone help me out with a place I can start with to find out what exactly is causing this issue. I have run profiles on this webapp on google chromes console and noticed that in the heap spanshot value increases steadily with the playing of the game, specifically (root) value which jumps up by 900 counts. Any help would be very appreciated! Thanks EDIT: I don't know if this helps, but I have noticed that even on refreshing the page after the app becomes unresponsive the page reloads and I am still not able to interact with the page elements but the tab scroll bar continues to work and I can see my application window completely. So to summaries the tab stops accepting any sort of user interaction inside the page. Edit2: Nop. It doesn't work still... The app crashes on double click on the canvas element. The console is not throwing any errors either! =/ I have noticed this problem is isolated only to safari!

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  • how to query sqlite for certain rows, i.e. dividing it into pages (perl DBI)

    - by user1380641
    sorry for my noob question, I'm currently writing a perl web application with sqlite database behind it. I would like to be able to show in my app query results which might get thousands of rows - these should be split in pages - routing should be like /webapp/N - where N is the page number. what is the correct way to query the sqlite db using DBI, in order to fetch only the relavent rows. for instance, if I show 25 rows per page so I want to query the db for 1-25 rows in the first page, 26-50 in the second page etc.... Thanks in advanced!

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  • In the context of an asp.net website, what's the most efficient way to check whether a User has acce

    - by scaramouch
    I have a webpage that you pass in an id parameter (via a querystring), which it then uses to fetch data from a database. Typically, a user would navigate to this page from another page that lists only those records that the user has access to. However, if they go directly to the page by typing in the URL in the Address Bar, they can effectively view any record they like. Eg. If they were to type something like http://localhost/TestSite/ClientAdmin/ManageLocation.aspx?LocationID=5 into their Address Bar, they can access the database record with the LocationID equal to five - even though they shouldn't have access to it. Now, I could solve this by doing a database check every time the page is loaded to see whether the current user has access to the record they're trying to view. However this doesn't seem very efficient given that in most cases a user won't be trying to access a record that isn't theirs. Does anyone have a better suggestion? Thanks.

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  • dynamic element positioning

    - by Ahmet vardar
    Hi, I have been seeing this thing for months and years and i really wanna know how to do that one. For example, there is an element in the middle of the page. and it is in absolute position. When scroll downs and comes to that element, it becomes fixed positioned and follows the scroll, when scroll up and back to middle of the page it becomes absolute again. I can give google adwords accounts page as an example, in the campaigns page, your keywords' header is the same thing. how to do that one ? thanks

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  • ajax aspx example

    - by dbds
    Can anyone provide a simple use of AJAX in a vb aspx page, so I can just reload a part of the page and not have to reload the entire web page?

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  • JQuery method for IFrame functionality

    - by user102533
    I have a aspx page (details page) that needs to be loaded in a modal window on a click of a button. I have buttons in the aspx page that calls server side functionality. So, this is similar to an IFrame way (except that it's now in a modal window) Is there a JQuery way of doing this?

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  • How do I use jquery to both download & delete files dynamically from servlet

    - by Adam
    Is it possible to a jquery $.get() to call a servlet and use it to both download a file or update the page without reloading the page? (Or more basically, can I download a file without reloading the page?) For example, I am using a servlet that either returns a file to download of mimetype "application/octet-stream", or returns text to be update in the page of type "text/html". I can write a form with a submit, but then it reloads the page, so I've been trying to use $.get()... but the download doesn't work. <script type="text/javascript"> jQuery(document).ready(function(){ $("#handleFileOptions button").button(); }); function handleFilesSubmit(requestType) { $.get('FileServlet', {filename: $('#radioFileList input:radio:checked').button("widget").text(), requestType: requestType}, function(data){ ...?... }); } </script> In the html: <div id = "handleFiles"> <div id ="radioFileList"> <div id="radioFileList"> <input value="file0.txt" type="radio" id="fileitem0><label for="fileitem0">file0.txt</label> <input value="file1.txt" type="radio" id="fileitem1><label for="fileitem0">file1.txt</label> </div> </div> <div id="handleFileOptions"> <button id="handleFileOption0" onclick="handleFilesSubmit('Download')">Download</button> <button id="handleFileOption1" onclick="handleFilesSubmit('Delete')">Delete</button> </div> </div>

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  • Paginator (Migration from Cake 1.3 to 2.0

    - by Christian Waschke
    i am struggling with the paginator in cakephp 2.0. While i am trying to migrate my application to 2.0 i cant find any solution to jump directly to the last page. In 1.3 it was quiet to do that from outside like this: echo $this->Html->link(__('Flights'), array('controller' => 'flights', 'action' => 'index','page' => 'last')); but this little trick putting 'page:last' in does not work anymore in 2.0. Of course there is a Paginator function called last, but this would only help if i would be already inside the app. My Problem is to access from an outside link directly the last page of the paginator. Thank you for reading, cdjw

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  • IE Hanging on jQuery code

    - by OrangeRind
    Here's another clichéd problem, but I couldn't find an exact match to this. I haven't posted any source here, as you can freely see all that is there on the link. :-) Statement:I have a web page at http://agrimgupta.com/antaragni/ Disclaimer: Pardon me for the pathetic coding on that page. ;-) It was done on a very short interval. Improvements will be done at a later stage. Observation: This page is functioning normally on my localhost on all browsers. Problem: IE 8 is crawling (nearly hanging) while loading this page from the website. Although it is working fine on localhost. When on the website, It fails to render the mouseover effects, doing them in almost what seems like a minute. Question: How to resolve this stuck up of IE? It is necessary to resolve this. Thanks in Advance

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  • JDBC Pagination

    - by Zeeshan
    Hi, I want to implement pagination using JDBC. The actual thing I want to know is "How can i get first 50 and then next 50 records from database for page 1 and 2 respectively" My Query is Select * from data [data table contains 20,000 rows] For page #1 I get 50 records and for page #2 I want to get next 50 records. How can I implement it efficiently in JDBC? I have searched and found that rs.absolute(row) is the way to skip first page records but it takes some amount of time on large result sets and I don't want to bear this amount of time. Also, I don't want to use rownum and limit + offset in query because these are not good to use in query, I dont know why, still I don't want to use it in query. Can anyone help me how to get limited ResultSet for pagination or is there any way JDBC is giving us?

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  • jQuery AJAX functions

    - by sundowatch
    I am using jQuery's load() function when getting a page to a div like that: content.php page is : <script type="text/javascript"> $(".content").load("asd.php"); </script> and asd.php is: <script type="text/javascript"> alert("Hello World"); </script> When load ajax finished alert() message appears 3 times. Actually it must appears only 1 time. So load() function get page 3 times. How can I get the page a time?

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  • dynamic meta data and description for pages

    - by pradeep
    Hi, I am developing pages in php dynamically i.e data gets filled up from mysql DB. how do i assign a proper meta data and description for these dynamic pages so that google recognises it properly. What needs to be passed in page so that google takes description properly. when i search a page in google. it takes the data in page as description not description tag contents

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  • ASP.NET MVC two user control

    - by priya4
    I have two user controls on the page and one of the user control has this text aread. which is used to add a note and but when they click add note button the page reloads. I do not want the page to reload ,i was looking for an example which this is done without postback. Thanks

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  • Facebook | redirect error

    - by MMRUser
    I have facebook connect button on a page of my site and I want user to redirect to a page after a successful login: here's the code snippet: </script> <fb:login-button onlogin="facebook_onlogin();"> </fb:login-button> <script type="text/javascript"> FB.init("API_KEY", "http://myip/facebookapp/xd_reciver.html/"); function facebook_onlogin() { window.location="http://myip/facebookapp/mypage/" } </script> But when I logged in it redirects to the page INSIDE the pop-up, how can I redirect to the page out side of the popup..

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  • How is this function being made use of?

    - by Kay
    Hello all, I am just studying a few classes given to me by my lecturer and I can't understand how the function heapRebuild is being made used of! It doesn't change any global variables and it doesn't print out anything ad it doesn't return anything - so should this even work? It shouldn't, should it? If you were told to make use of heapRebuild to make a new function removeMac would you edit heapRebuild? public class MaxHeap<T extends Comparable<T>> implements Heap<T>{ private T[] heap; private int lastIndex; public T removeMax(){ T rootItem = heap[0]; heap[0] = heap[lastIndex-1]; lastIndex--; heapRebuild(heap, 0, lastIndex); return rootItem; } protected void heapRebuild(T[ ] items, int root, int size){ int child = 2*root+1; if( child < size){ int rightChild = child+1; if ((rightChild < size) && (items[rightChild].compareTo(items[child]) > 0)){ child = rightChild; } if (items[root].compareTo(items[child]) < 0){ T temp = items[root]; items[root] = items[child]; items[child] = temp; heapRebuild(items, child, size);} } } }

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  • MySql: Is it reasonable to use 'view' or I would better denormalize my DB?

    - by Budda
    There is 'team_sector' table with following fields: Id, team_id, sect_id, size, level It contains few records for each 'team' entity (referenced with 'team_id' field). Each record represent sector of team's stadium (totally 8 sectors). Now it is necessary to implement few searches: by overall stadium size (SUM(size)); the best quality (SUM(level)/COUNT(*)). I could create query something like this: SELECT TS.team_id, SUM(TS.size) as OverallSize, SUM(TS.Level)/COUNT(TS.Id) AS QualityLevel FROM team_sector GROUP BY team_id ORDER BY OverallSize DESC / ORDER BY QualityLevel DESC But my concern here is that calculation for each team will be done each time on query performed. It is not too big overhead (at least now), but I would like to avoid performance issues later. I see 2 options here. The 1st one is to create 2 additional fields in 'team' table (for example) and store there OverallSize and QualityLevel fields. If information if 'sector' table is changed - update those table too (probably would be good to do that with triggers, as sector table doesn't change too often). The 2nd option is to create a view that will provide required data. The 2nd option seems much easier for me, but I don't have a lot of experience/knowledge of work with views. Q1: What is the best option from your perspective here and why? Probably you could suggest other options? Q2: Can I create view in such way that it will do calculations rarely (at least once per day)? If yes - how? Q3: Is it reasonable to use triggers for such purpose (1st option). P.S. MySql 5.1 is used, overall number of teams is around 1-2 thousand, overall number of records in sector table - overall 6-8 thousand. I understand, those numbers are pretty small, but I would like to implement the best practice here.

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  • Error Message on Wordpress site.

    - by anonymical
    Hey all, this is my first post. I recently upgraded a wordpress site, all things load but on the top of the page and bottom of the page I get this error. Warning: session_start() [function.session-start]: open(/tmp/sess_6v2kul3t823ah9074g3cl2lrt6, O_RDWR) failed: Permission denied (13) in /home/admin_m3/incommunion.org/wp-content/plugins/wordpress-automatic-upgrade/wordpress-automatic-upgrade.php on line 121 How can I remove it from the page? I believe the server automatically upgraded the version of Wordpress. Any idea? Newbie A

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  • IE8 disappearing image bug

    - by Joe Fletcher
    In IE8 (& maybe others), when I leave my page to go to another tab in IE and then come back to my page's tab, each time the cursor runs over an image it disappears until I refresh the page. I've heard of disappearing image bugs, but I couldn't find anything on this particular case, especially given this isn't a weird pre-IE8 bug. I am using a lightbox, so possibly something to do with javascript? http://dev.bwmsnow.co.nz/snowboarding

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  • What is a valid use for Response.Redirect("SomeURL", false) ?

    - by Aheho
    In ASP.NET I frequently use Response.Redirect to redirect the end user to another page on my system. I always set the second parameter to true to immediately end the response. For the life of me, I can't think of a reason why anybody would ever set that parameter to true. What's the point of continuing generating a page when the end user's browser is just going to be redirected to a different page immediately?

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