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  • Building an ASP.Net 4.5 Web forms application - part 5

    - by nikolaosk
    ?his is the fifth post in a series of posts on how to design and implement an ASP.Net 4.5 Web Forms store that sells posters on line. There are 4 more posts in this series of posts.Please make sure you read them first.You can find the first post here. You can find the second post here. You can find the third post here.You can find the fourth here.  In this new post we will build on the previous posts and we will demonstrate how to display the details of a poster when the user clicks on an individual poster photo/link. We will add a FormView control on a web form and will bind data from the database. FormView is a great web server control for displaying the details of a single record. 1) Launch Visual Studio and open your solution where your project lives2) Add a new web form item on the project.Make sure you include the Master Page.Name it PosterDetails.aspx 3) Open the PosterDetails.aspx page. We will add some markup in this page. Have a look at the code below <asp:Content ID="Content2" ContentPlaceHolderID="FeaturedContent" runat="server">    <asp:FormView ID="posterDetails" runat="server" ItemType="PostersOnLine.DAL.Poster" SelectMethod ="GetPosterDetails">        <ItemTemplate>            <div>                <h1><%#:Item.PosterName %></h1>            </div>            <br />            <table>                <tr>                    <td>                        <img src="<%#:Item.PosterImgpath %>" border="1" alt="<%#:Item.PosterName %>" height="300" />                    </td>                    <td style="vertical-align: top">                        <b>Description:</b><br /><%#:Item.PosterDescription %>                        <br />                        <span><b>Price:</b>&nbsp;<%#: String.Format("{0:c}", Item.PosterPrice) %></span>                        <br />                        <span><b>Poster Number:</b>&nbsp;<%#:Item.PosterID %></span>                        <br />                    </td>                </tr>            </table>        </ItemTemplate>    </asp:FormView></asp:Content> I set the ItemType property to the Poster entity class and the SelectMethod to the GetPosterDetails method.The Item binding expression is available and we can retrieve properties of the Poster object.I retrieve the name, the image,the description and the price of each poster. 4) Now we need to write the GetPosterDetails method.In the code behind of the PosterDetails.aspx page we type public IQueryable<Poster> GetPosterDetails([QueryString("PosterID")]int? posterid)        {                    PosterContext ctx = new PosterContext();            IQueryable<Poster> query = ctx.Posters;            if (posterid.HasValue && posterid > 0)            {                query = query.Where(p => p.PosterID == posterid);            }            else            {                query = null;            }            return query;        } I bind the value from the query string to the posterid parameter at run time.This is all possible due to the QueryStringAttribute class that lives inside the System.Web.ModelBinding and gets the value of the query string variable PosterID.If there is a matching poster it is fetched from the database.If not,there is no data at all coming back from the database. 5) I run my application and then click on the "Midfielders" link.Then click on the first poster that appears from the left (Kenny Dalglish) and click on it to see the details. Have a look at the picture below to see the results.   You can see that now I have all the details of the poster in a new page.?ake sure you place breakpoints in the code so you can see what is really going on. Hope it helps!!!

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  • Building an ASP.Net 4.5 Web forms application - part 3

    - by nikolaosk
    ?his is the third post in a series of posts on how to design and implement an ASP.Net 4.5 Web Forms store that sells posters on line.Make sure you read the first and second post in the series.In this new post I will keep making some minor changes in the Markup,CSS and Master page but there is no point in presenting them here. They are just minor changes to reflect the content and layout I want my site to have. What I need to do now is to add some more pages and start displaying properly data from my database.Having said that I will show you how to add more pages to the web application and present data.1) Launch Visual Studio and open your solution where your project lives2) Add a new web form item on the project.Make sure you include the Master Page.Name it PosterList.aspxHave a look at the picture below 3) In Site.Master add the following link to the master page so the user can navigate to it.You should only add the line in bold     <nav>                    <ul id="menu">                        <li><a runat="server" href="~/">Home</a></li>                        <li><a runat="server" href="~/About.aspx">About</a></li>                        <li><a runat="server" href="~/Contact.aspx">Contact</a></li>                          <li><a href="http://weblogs.asp.net/PosterList.aspx">Posters</a></li>                    </ul>                </nav> 4) Now we need to display categories from the database. We will use a ListView web server control.Inside the <div id="body"> add the following code. <section id="postercat">       <asp:ListView ID="categoryList"                          ItemType="PostersOnLine.DAL.PosterCategory"                         runat="server"                        SelectMethod="GetPosterCategories" >                        <ItemTemplate>                                                    <a href="http://weblogs.asp.net/PosterList.aspx?id=<%#: Item.PosterCategoryID %>">                            <%#: Item.PosterCategoryName %>                            </a>                            </b>                        </ItemTemplate>                        <ItemSeparatorTemplate> ----- </ItemSeparatorTemplate>                    </asp:ListView>             </section>        Let me explain what the code does.We have the ListView control that displays each poster category's name.It also includes a link to the PosterList.aspx page with a query-string value containing the ID of the category. We set the ItemType property in the ListView to the PosterCategory entity .We set the SelectMethod property to a method GetPosterCategories. Now we can use the data-binding expression Item (<%#: %>) that is available within the ItemTemplate . 5) Now we must write the GetPosterCategories method. In the Site.Master.cs file add the following code.This is just a simple function that returns the poster categories.        public IQueryable<PosterCategory> GetPosterCategories()        {            PosterContext ctx = new PosterContext();            IQueryable<PosterCategory> query = ctx.PosterCategories;            return query;        } 6) I just changed a few things in the Site.css file to style the new <section> HTML element that includes the ListView control.#postercat {  text-align: center; background-color: #85C465;}     7) Build and run your application. Everything should compile now. Have a look at the picture below.The links (poster categories) appear.?he ListView control when is called during the page lifecycle calls the GetPosterCategories() method.The method is executed and returns the poster categories that are bound to the control.  When I click on any of the poster category links, the PosterList.aspx page will show up with the appropriate Id that is the PosterCategoryID.Have a look at the picture below  We will add more data-enabled controls in the next post in the PosterList.aspx page. Some people are complaining the posts are too long so I will keep them short. Hope it helps!!!

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  • How to structure VB.NET windows forms applications

    - by Jon
    What is the best way to structure a VB.NET windows forms application so that code can be reused and the app can be extended easily. I used to create lots of new forms. This lead to lots of repeated code and forms which did similar things. Now, for forms which do similar jobs, such as view/edit/delete items from a specific db table, I create a form with the required controls, have the form create an instance of a class with params such as a collection of the controls and a string containing the db table name. Then the individual controls call functions of the class. Advanced forms will inherit and extend this basic form class. 1) Has there already been work done in this area? 2) Are there books / articles available which discuss the options available on this topic? Thanks!

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  • How do I keep Visual Studio's Windows Forms Designer from deleting controls?

    - by Sören Kuklau
    With several forms of mine, I occasionally run into the following issue: I edit the form using the designer (Visual Studio 2008, Windows Forms, .NET 2.0, VB.NET) to add components, only to find out later that some minor adjustments were made (e.g. the form's size is suddenly changed by a few pixels), and controls get deleted. This happens silently — event-handling methods automatically have their Handles suffix removed, too, so they never get called, and there's no compiler error. I only notice much later or not at all, because I'm working on a different area in the form. As an example, I have a form with a SplitContainer containing an Infragistics UltraListView to the left, and an UltraTabControl to the right. I added a new tab, and controls within, and they worked fine. I later on found out that the list view's scrollbar was suddenly invisible, due to its size being off, and at least one control was removed from a different tab that I hadn't been working on. Is this a known issue with the WinForms Designer, or with Infragistics? I use version control, of course, so I can compare the changes and merge the deleted code back in, but it's a tedious process that shouldn't be necessary. Are there ways to avoid this? Is there a good reason for this to occur? One clue is that the control that was removed may have code (such as a Load event handler) that expects to be run in run time, not design time, and may be throwing an exception. Could this cause Visual Studio to remove the control?

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  • Is there more to HTML forms than http://www.w3schools.com/html/html_forms.asp ?

    - by mawg
    I am creating a form designer. It will generate PHP code which will produce an HTML form. Users will fill in fields and the PHP will store user input in a MySql database (and, of course, they can use the designer to generate forms which query the database). I am using Borland C++ Builder (very similar to Delphi & and you can get the same idea from VB, MSVC, Qt ... any IDE with a RAD GUI designer). Looking at the W3C page http://www.w3schools.com/html/html_forms.asp it seems that the components I can use for my form and retrieve data from are - edit box / TEdit / <input type="text" - memo / TMemo / <input type="textarea" - check box / TCheckBox / <input type="CheckBox" - Combo box / TComboBox / <select ... <option... - Radio group / TRadioGroup / <input type="radio" - Group box / TGroupBox / <fieldset ... <legend ... - Panel / TPanel / <fieldset ... I am unsure whether to allow button / TButton/ input type="button" - other than a single submit button which my form designer program automatically adds to the end of the generated form. But my real question is - did I miss any? It might be nice to have masked edit which only accepts numbers, or maybe some form of "spin control" (TUpDown, or slider + linked read only TEdit), so that the user can click & hold to increment/decrement an integer value. And a calendar component would be nice. Very important: I want to implement it all server-side in PHP, so no client-side JS or Ajax or the likes. If there anything else that I can add to make my generated forms look more impressive in the browser?

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  • Dynamic Windows Forms Components (Performance problem)

    - by Svisstack
    I have a problem with performance of my code under Windows Forms. Have a form, her layout is depending on constructor data, because he layout must be OnLoad or in Constructor generated. I generation is simple, base FlowLayoutPanel have other FlowLayoutPanels, for each have a Label and TextBox with DataBinding. Problem is this is VERY SLOW, up to 20 seconds, i drawing less than 100 controls, from Performace Session i know a problem is on 70% procesing functions: System.Windows.Forms.Control.ControlCollection.Add(class System.Windows.Forms.Control) System.Windows.Forms.ControlBindingsCollection.Add(class System.Windows.Forms.Binding) How i can do with this? Anyone help me in this problem? How solve the dynamic form layout problem?

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  • WPF DataGrid Vs Windows Forms DataGridView

    - by Mrk Mnl
    I have experience in WPF and Windows Forms, however have only used the Windows Forms DataGridView and not the WPF DataGrid (which was only included in .Net 4 or could be added to .Net 3.5 from Codeplex, I understand). I am about to devlop an app using one of these controls heavily for large amounts of data and have read performance is an issue with the WPF DataGrid so I may stick to the Windows Forms DataGridView.. Is this the case? I do not want to use a 3rd party control. Does the Windows Forms DataGridView offer significant performance over the WPF DataGrid for large amounts of data? If I were to use WPF I would prefer to use .Net 3.5S SP1, unless the DataGrid in the .Net 4 is significantly better? Also I want to use ADO with DataTable's which I feel is better suited to Windows Forms..

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  • Web Forms 2.0: Editor & Libraries

    - by lacco
    Hi! I would like to build a web application where users can create forms with very few technical knowledge. Since they need "advanced" features like validations, required fields and some more, I am currently evaluating XForms and web forms 2.0 (from HTML 5 spec). Concerning web forms, my research couldn't find any answers for the following questions: Are there any (JavaScript) libraries out there which make web forms fully available in browsers which have currently no support for them (i.e. Firefox)? Is there a "web forms editor" which allows creating input and select fields, with setting attributes like the type, required, ...? It has to be something visual, and must create "nice" html. Any help/ hints would be appreciated!

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  • mdi child forms slow to draw when visibility changed

    - by dandan78
    My application has the following UI configuration: The main form is an MDI container. Its child forms are attached to a tabstrip. Each user has his set of child forms. Depending on the active user, only that user's child forms are displayed, together with tabs. This is achieved by going through the main form's MdiChildren and setting their Visible property to false/true depending on the active user. This has two undesired effects. One is that every child form gets redrawn in succession, which is ugly and slow. The other is that for some reason the forms go from maximized to normal, effectively undocking them from the main form. Is there any way to display just one of the child forms, such as the one the user was previously looking at, and get the others to stay in the background? The maximize/normal thing is not that big a deal because I can maximize them again manually.

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  • Delphi, how to make independent windows

    - by Roy M Klever
    I have an application that uses tabs like the Chrome browser. Now I want to be able to open more forms and not be limited to only one form. These forms should act the same but if I close main form all forms are closed. How can I make all forms be equal, so no matter which form I close it only closes that form and not exit application before all forms are closed? Any ideas? Kind Regards Roy M Klever

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  • Creating PHP Forms with show/hide functionality [migrated]

    - by ronquiq
    I want to create two reports and submit the report data to database by using two functions defined in a class: Here I have two buttons: "Create ES" and "Create RP". Rightnow, my forms are working fine, I can insert data successfully, but the problem was when I click on submit after filling the form data, the content is hiding and displays the fist div content "cs_content" and again I need to onclick to submit again. Could anyone give a solution for this. Requirement : When I click on "Create CS", I should be able to fill the form and submit data successfully with a message within "cs_content" and any form input errors, the errors should display within "cs_content". When I click on "Create RP", I should be able to fill the form and submit data successfully with a message within "rp_content" and any form input errors, the errors should display within "rp_content". home.php <?php require 'classes/class.report.php'; $report = new Report($db); ?> <html> <head> <script src="js/jqueryv1.10.2.js"></script> <script> $ (document).ready(function () { //$("#cs_content").show(); $('#cs').click(function () { $('#cs_content').fadeIn('slow'); $('#rp_content').hide(); }); $('#rp').click(function () { $('#rp_content').fadeIn('slow'); $('#cs_content').hide(); }); }); </script> </head> <body> <div class="container2"> <div style="margin:0px 0px;padding:3px 217px;overflow:hidden;"> <div id="cs" style="float:left;margin:0px 0px;padding:7px;"><input type="button" value="CREATE CS"></div> <div id="rp" style="float:left;margin:0px 0px;padding:7px;"><input type="button" value="CREATE RP"></div><br> </div> <div id="cs_content"> <?php $report->create_cs_report(); ?> </div> <div id="rp_content" style="display:none;"> <?php $report->create_rp_report(); ?> </div> </div> </body> </html> class.report.php <?php class Report { private $db; public function __construct($database){ $this->db = $database; } public function create_cs_report() { if (isset($_POST['create_es_report'])) { $report_name = htmlentities($_POST['report_name']); $from_address = htmlentities($_POST['from_address']); $subject = htmlentities($_POST['subject']); $reply_to = htmlentities($_POST['reply_to']); if (empty($_POST['report_name']) || empty($_POST['from_address']) || empty($_POST['subject']) || empty($_POST['reply_to'])) { $errors[] = '<span class="error">All fields are required.</span>'; } else { if (isset($_POST['report_name']) && empty($_POST['report_name'])) { $errors[] = '<span class="error">Report Name is required</span>'; } else if (!ctype_alnum($_POST['report_name'])) { $errors[] = '<span class="error">Report Name: Whitespace is not allowed, only alphabets and numbers are required</span>'; } if (isset($_POST['from_address']) && empty($_POST['from_address'])) { $errors[] = '<span class="error">From address is required</span>'; } else if (filter_var($_POST['from_address'], FILTER_VALIDATE_EMAIL) === false) { $errors[] = '<span class="error">Please enter a valid From address</span>'; } if (isset($_POST['subject']) && empty($_POST['subject'])) { $errors[] = '<span class="error">Subject is required</span>'; } else if (!ctype_alnum($_POST['subject'])) { $errors[] = '<span class="error">Subject: Whitespace is not allowed, only alphabets and numbers are required</span>'; } if (isset($_POST['reply_to']) && empty($_POST['reply_to'])) { $errors[] = '<span class="error">Reply To is required</span>'; } else if (filter_var($_POST['reply_to'], FILTER_VALIDATE_EMAIL) === false) { $errors[] = '<span class="error">Please enter a valid Reply-To address</span>'; } } if (empty($errors) === true) { $query = $this->db->prepare("INSERT INTO report(report_name, from_address, subject, reply_to) VALUES (?, ?, ?, ?) "); $query->bindValue(1, $report_name); $query->bindValue(2, $from_address); $query->bindValue(3, $subject); $query->bindValue(4, $reply_to); try { $query->execute(); } catch(PDOException $e) { die($e->getMessage()); } header('Location:home.php?success'); exit(); } } if (isset($_GET['success']) && empty($_GET['success'])) { header('Location:home.php'); echo '<span class="error">Report is succesfully created</span>'; } ?> <form action="" method="POST" accept-charset="UTF-8"> <div style="font-weight:bold;padding:17px 80px;text-decoration:underline;">Section A</div> <table class="create_report"> <tr><td><label>Report Name</label><span style="color:#A60000">*</span></td> <td><input type="text" name="report_name" required placeholder="Name of the report" value="<?php if(isset($_POST["report_name"])) echo $report_name; ?>" size="30" maxlength="30"> </td></tr> <tr><td><label>From</label><span style="color:#A60000">*</span></td> <td><input type="text" name="from_address" required placeholder="From address" value="<?php if(isset($_POST["from_address"])) echo $from_address; ?>" size="30"> </td></tr> <tr><td><label>Subject</label><span style="color:#A60000">*</span></td> <td><input type="text" name="subject" required placeholder="Subject" value="<?php if(isset($_POST["subject"])) echo $subject; ?>" size="30"> </td></tr> <tr><td><label>Reply To</label><span style="color:#A60000">*</span></td> <td><input type="text" name="reply_to" required placeholder="Reply address" value="<?php if(isset($_POST["reply_to"])) echo $reply_to; ?>" size="30"> </td></tr> <tr><td><input type="submit" value="create report" style="background:#8AC007;color:#080808;padding:6px;" name="create_es_report"></td></tr> </table> </form> <?php //IF THERE ARE ERRORS, THEY WOULD BE DISPLAY HERE if (empty($errors) === false) { echo '<div>' . implode('</p><p>', $errors) . '</div>'; } } public function create_rp_report() { if (isset($_POST['create_rp_report'])) { $report_name = htmlentities($_POST['report_name']); $to_address = htmlentities($_POST['to_address']); $subject = htmlentities($_POST['subject']); $reply_to = htmlentities($_POST['reply_to']); if (empty($_POST['report_name']) || empty($_POST['to_address']) || empty($_POST['subject']) || empty($_POST['reply_to'])) { $errors[] = '<span class="error">All fields are required.</span>'; } else { if (isset($_POST['report_name']) && empty($_POST['report_name'])) { $errors[] = '<span class="error">Report Name is required</span>'; } else if (!ctype_alnum($_POST['report_name'])) { $errors[] = '<span class="error">Report Name: Whitespace is not allowed, only alphabets and numbers are required</span>'; } if (isset($_POST['to_address']) && empty($_POST['to_address'])) { $errors[] = '<span class="error">to address is required</span>'; } else if (filter_var($_POST['to_address'], FILTER_VALIDATE_EMAIL) === false) { $errors[] = '<span class="error">Please enter a valid to address</span>'; } if (isset($_POST['subject']) && empty($_POST['subject'])) { $errors[] = '<span class="error">Subject is required</span>'; } else if (!ctype_alnum($_POST['subject'])) { $errors[] = '<span class="error">Subject: Whitespace is not allowed, only alphabets and numbers are required</span>'; } if (isset($_POST['reply_to']) && empty($_POST['reply_to'])) { $errors[] = '<span class="error">Reply To is required</span>'; } else if (filter_var($_POST['reply_to'], FILTER_VALIDATE_EMAIL) === false) { $errors[] = '<span class="error">Please enter a valid Reply-To address</span>'; } } if (empty($errors) === true) { $query = $this->db->prepare("INSERT INTO report(report_name, to_address, subject, reply_to) VALUES (?, ?, ?, ?) "); $query->bindValue(1, $report_name); $query->bindValue(2, $to_address); $query->bindValue(3, $subject); $query->bindValue(4, $reply_to); try { $query->execute(); } catch(PDOException $e) { die($e->getMessage()); } header('Location:home.php?success'); exit(); } } if (isset($_GET['success']) && empty($_GET['success'])) { header('Location:home.php'); echo '<span class="error">Report is succesfully created</span>'; } ?> <form action="" method="POST" accept-charset="UTF-8"> <div style="font-weight:bold;padding:17px 80px;text-decoration:underline;">Section A</div> <table class="create_report"> <tr><td><label>Report Name</label><span style="color:#A60000">*</span></td> <td><input type="text" name="report_name" required placeholder="Name of the report" value="<?php if(isset($_POST["report_name"])) echo $report_name; ?>" size="30" maxlength="30"> </td></tr> <tr><td><label>to</label><span style="color:#A60000">*</span></td> <td><input type="text" name="to_address" required placeholder="to address" value="<?php if(isset($_POST["to_address"])) echo $to_address; ?>" size="30"> </td></tr> <tr><td><label>Subject</label><span style="color:#A60000">*</span></td> <td><input type="text" name="subject" required placeholder="Subject" value="<?php if(isset($_POST["subject"])) echo $subject; ?>" size="30"> </td></tr> <tr><td><label>Reply To</label><span style="color:#A60000">*</span></td> <td><input type="text" name="reply_to" required placeholder="Reply address" value="<?php if(isset($_POST["reply_to"])) echo $reply_to; ?>" size="30"> </td></tr> <tr><td><input type="submit" value="create report" style="background:#8AC007;color:#080808;padding:6px;" name="create_rp_report"></td></tr> </table> </form> <?php //IF THERE ARE ERRORS, THEY WOULD BE DISPLAY HERE if (empty($errors) === false) { echo '<div>' . implode('</p><p>', $errors) . '</div>'; } } }//Report CLASS ENDS

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  • Lock down a site using Forms Auth in IIS7 with Windows Auth

    - by Josh
    I have an ASP.NET MVC 1.0 application that uses Forms Authentication. We are using Windows Server 2008. I need to lock down the site so that only certain users (in AD Groups) can access the site. Unfortunately, though, when I set the site to not allow anon users and use windows authentication, due to the integration of the site and IIS, it shows the user as signed in as their domain account, instead of allowing them to sign in through Forms Auth. So, I need a mixed mode authentication. I need the site to be only accessible through windows auth, without anon users, but once you are in, it needs to use forms auth only. How would I go about doing this the right way?

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  • Lock down a site using Forms Auth in IIS7 with Windows Auth

    - by justjoshingyou
    I have an ASP.NET MVC 1.0 application that uses Forms Authentication. We are using Windows Server 2008. I need to lock down the site so that only certain users (in AD Groups) can access the site. Unfortunately, though, when I set the site to not allow anon users and use windows authentication, due to the integration of the site and IIS, it shows the user as signed in as their domain account, instead of allowing them to sign in through Forms Auth. So, I need a mixed mode authentication. I need the site to be only accessible through windows auth, without anon users, but once you are in, it needs to use forms auth only. How would I go about doing this the right way?

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  • SharePoint Server 2007 and HTML Forms - How to control access rights

    - by Anarkie
    I'm working with Hosted SharePoint 2007 with Forms Server. I need to allow client access to submit HTML forms designed in Infopath. Problem is, I need to make sure the clients don't see the library. There is sensitive data that will be on these forms. I also need to have a repeated library that is based on the Internal Admin records and requirements. Outside of making a seperate library per customer, does anyone have any suggestions? My Goal: 1: Customers enter their requests through a link or provided page 2: Internally address the requests and perform required arrangements, add billing and payment fields 3: Have SharePoint metrics, reports, etc... based on the provided intormation and status. Thanks in Advance!!

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  • Marker Recognition on Android (recognising Rubik's Cubes)

    - by greenie
    Hi everybody. I'm developing an augmented reality application for Android that uses the phone's camera to recognise the arrangement of the coloured squares on each face of a Rubik's Cube. One thing that I am unsure about is how exactly I would go about detecting and recognising the coloured squares on each face of the cube. If you look at a Rubik's Cube then you can see that each square is one of six possible colours with a thin black border. This lead me to think that it should be relativly simply to detect a square, possibly using an existing marker detection API. My question is really, has anybody here had any experience with image recognition and Android? Ideally I'd like to be able to implement and existing API, but it would be an interesting project to do from scratch if somebody could point me in the right direction to get started. Many thanks in advance.

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  • Computer Vision application(+web interface) for face detection and recognition from database

    - by Kush
    My project is a computer vision java application which should implement the following : A web interface through which the form entry+images(for example a student data) will be stored into a database(Mysql) & images into directory common to my java application. Then the data & images can be retrieved from my java Gui application and I can perform the following operations of image processing through OpenCV. Actually,I want to run the face detection on images retrieved and discard the false entries(no proper face). Also the application user/admin can search an image based on text search(By Id) or By another reference image using face recognition. I am well familiar with Java but the problem is that I need a guidance on how to organise it in a stepwise manner(links appreciated).OpenCv,Php and mySql are really messy.I know doing the openCV stuff within java is real overhead but i really want to do it.But If there is any suggestion to do it elseway please guide me.So any kind of help is a ray of hope for me. Thanks.

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  • iPhone UIImage number recognition

    - by Skeep
    Hi All, I have a small UIImage (jpg) with a single typed number. I want to be able to read the number with some kind of pattern recognition. I'm really not sure where to start, so any help would be appreciated. my initial idea was to compare this image with other images. For instance compare the image with that of a 1,2,3, etc until a match was found. That just seems slow and cumbersome and wondered if there was a better way to do it? Thanks

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  • Building an ASP.Net 4.5 Web forms application - part 4

    - by nikolaosk
    ?his is the fourth post in a series of posts on how to design and implement an ASP.Net 4.5 Web Forms store that sells posters on line.There are 3 more posts in this series of posts.Please make sure you read them first.You can find the first post here. You can find the second post here. You can find the third post here.  In this new post we will build on the previous posts and we will demonstrate how to display the posters per category.We will add a ListView control on the PosterList.aspx and will bind data from the database. We will use the various templates.Then we will write code in the PosterList.aspx.cs to fetch data from the database.1) Launch Visual Studio and open your solution where your project lives2) Open the PosterList.aspx page. We will add some markup in this page. Have a look at the code below  <section class="posters-featured">                    <ul>                         <asp:ListView ID="posterList" runat="server"                            DataKeyNames="PosterID"                            GroupItemCount="3" ItemType="PostersOnLine.DAL.Poster" SelectMethod="GetPosters">                            <EmptyDataTemplate>                                      <table id="Table1" runat="server">                                            <tr>                                                  <td>We have no data.</td>                                            </tr>                                     </table>                              </EmptyDataTemplate>                              <EmptyItemTemplate>                                     <td id="Td1" runat="server" />                              </EmptyItemTemplate>                              <GroupTemplate>                                    <tr ID="itemPlaceholderContainer" runat="server">                                          <td ID="itemPlaceholder" runat="server"></td>                                    </tr>                              </GroupTemplate>                              <ItemTemplate>                                    <td id="Td2" runat="server">                                          <table>                                                <tr>                                                      <td>&nbsp;</td>                                                      <td>                                                <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>">                                                    <img src="<%#:Item.PosterImgpath%>"                                                        width="100" height="75" border="1"/></a>                                             </td>                                            <td>                                                <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>">                                                    <span class="PosterName">                                                        <%#:Item.PosterName%>                                                    </span>                                                </a>                                                            <br />                                                <span class="PosterPrice">                                                               <b>Price: </b><%#:String.Format("{0:c}", Item.PosterPrice)%>                                                </span>                                                <br />                                                        </td>                                                </tr>                                          </table>                                    </td>                              </ItemTemplate>                              <LayoutTemplate>                                    <table id="Table2" runat="server">                                          <tr id="Tr1" runat="server">                                                <td id="Td3" runat="server">                                                      <table ID="groupPlaceholderContainer" runat="server">                                                            <tr ID="groupPlaceholder" runat="server"></tr>                                                      </table>                                                </td>                                          </tr>                                          <tr id="Tr2" runat="server"><td id="Td4" runat="server"></td></tr>                                    </table>                              </LayoutTemplate>                        </asp:ListView>                    </ul>               </section>  3) We have a ListView control on the page called PosterList. I set the ItemType property to the Poster class and then the SelectMethod to the GetPosters method.  I will create this method later on.   (ItemType="PostersOnLine.DAL.Poster" SelectMethod="GetPosters")Then in the code below  I have the data-binding expression Item  available and the control becomes strongly typed.So when the user clicks on the link of the poster's category the relevant information will be displayed (photo,name and price)                                            <td>                                                <a href="PosterDetails.aspx?posterID=<%#:Item.PosterID%>">                                                    <img src="<%#:Item.PosterImgpath%>"                                                        width="100" height="75" border="1"/></a>                                             </td>4)  Now we need to write the simple method to populate the ListView control.It is called GetPosters method.The code follows   public IQueryable<Poster> GetPosters([QueryString("id")] int? PosterCatID)        {            PosterContext ctx = new PosterContext();            IQueryable<Poster> query = ctx.Posters;            if (PosterCatID.HasValue && PosterCatID > 0)            {                query = query.Where(p=>p.PosterCategoryID==PosterCatID);            }            return query;                    } This is a very simple method that returns information about posters related to the PosterCatID passed to it.I bind the value from the query string to the PosterCatID parameter at run time.This is all possible due to the QueryStringAttribute class that lives inside the System.Web.ModelBinding and gets the value of the query string variable id.5) I run my application and then click on the "Midfilders" link. Have a look at the picture below to see the results.  In the Site.css file I added some new CSS rules to make everything more presentable. .posters-featured {    width:840px;    background-color:#efefef;}.posters-featured   a:link, a:visited,    a:active, a:hover {        color: #000033;    }.posters-featured    a:hover {        background-color: #85c465;    }  6) I run the application again and this time I do not choose any category, I simply navigate to the PosterList.aspx page. I see all the posters since no query string was passed as a parameter.Have a look at the picture below   ?ake sure you place breakpoints in the code so you can see what is really going on.In the next post I will show you how to display poster details.Hope it helps!!!

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  • Forms Authentication logs out very quickly , locally works fine !!!

    - by user319075
    Hello to all, There's a problem that i am facing with my hosting company, I use a project that uses FormsAuthentication and the problem is that though it successfully logs in, it logs out VERY QUICKLY, and i don't know what could be the cause of that, so in my web.config file i added those lines: <authentication mode="Forms" > <forms name="Nadim" loginUrl="Login.aspx" defaultUrl="Default.aspx" protection="All" path="/" requireSSL="false"/> </authentication> <authorization> <deny users ="?" /> </authorization> <sessionState mode="StateServer" stateConnectionString="tcpip=localhost:42424" cookieless="false" timeout="1440"> </sessionState> and this is the code i use in my custom login page : protected void PasswordCustomValidator_ServerValidate(object source, ServerValidateEventArgs args) { try { UsersSqlDataSource.SelectParameters.Clear(); UsersSqlDataSource.SelectCommand = "Select * From Admins Where AdminID='" + IDTextBox.Text + "' and Password='" + PassTextBox.Text + "'"; UsersSqlDataSource.SelectCommandType = SqlDataSourceCommandType.Text; UsersSqlDataSource.DataSourceMode = SqlDataSourceMode.DataReader; reader = (SqlDataReader)UsersSqlDataSource.Select(DataSourceSelectArguments.Empty); if (reader.HasRows) { reader.Read(); if (RememberCheckBox.Checked == true) Page.Response.Cookies["Admin"].Expires = DateTime.Now.AddDays(5); args.IsValid = true; string userData = "ApplicationSpecific data for this user."; FormsAuthenticationTicket ticket1 = new FormsAuthenticationTicket(1, IDTextBox.Text, System.DateTime.Now, System.DateTime.Now.AddMinutes(30), true, userData, FormsAuthentication.FormsCookiePath); string encTicket = FormsAuthentication.Encrypt(ticket1); Response.Cookies.Add(new HttpCookie(FormsAuthentication.FormsCookieName, encTicket)); Response.Redirect(FormsAuthentication.GetRedirectUrl(IDTextBox.Text, RememberCheckBox.Checked)); //FormsAuthentication.RedirectFromLoginPage(IDTextBox.Text, RememberCheckBox.Checked); } else args.IsValid = false; } catch (SqlException ex) { ErrorLabel.Text = ex.Message; } catch (InvalidOperationException) { args.IsValid = false; } catch (Exception ex) { ErrorLabel.Text = ex.Message; } Also you will find that line of code: FormsAuthentication.RedirectFromLoginPage(IDTextBox.Text, RememberCheckBox.Checked); is commented because i thought there might be something wrong with the ticket when i log in , so i created it manually , every thing i know i tried but nothing worked, so does anyone have any idea what is the problem ? Thanks in advance, Baher.

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  • How to make a floating (tooltip) control in Windows.Forms?

    - by Daren Thomas
    The Scene: A (smallish) Form hosting a UserControl. The Plot: Whenever UserControl raises a hover event, display some (graphical) information in a tool tip fashion. When the user moves the mouse, fade them away again. Notes: I'd like to display more than one "tooltip", with each tooltip being a UserControl displaying information in a graphical manner. Not just text in a yellow box! Also, I'm using the Windows.Forms library.

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  • Any way to add tabbed forms in django administration site ?

    - by tomjerry
    When using Django "out-of-the-box" administration forms, the "change form" pages can be rather long for complex models (with a lot of fields). I would like to use tabs in the "change form", so things can be more readable (group fields by tabs...) Instead of doing it all by myself, by modifiying the 'change_form.html' admin template, I was wondering whether somebody has already done that and would like to share the code, or whether an existing Django-plugin already exist. Thanks in advance for you answer

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