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  • Calling Web Services in classic ASP

    - by cabhilash
      Last day my colleague asked me the provide her a solution to call the Web service from classic ASP. (Yes Classic ASP. still people are using this :D ) We can call web service SOAP toolkit also. But invoking the service using the XMLHTTP object was more easier & fast. To create the Service I used the normal Web Service in .Net 2.0 with [Webmethod] public class WebService1 : System.Web.Services.WebService { [WebMethod] public string HelloWorld(string name){return name + " Pay my dues :) "; // a reminder to pay my consultation fee :D} } In Web.config add the following entry in System.web<webServices><protocols><add name="HttpGet"/><add name="HttpPost"/></protocols></webServices> Alternatively, you can enable these protocols for all Web services on the computer by editing the <protocols> section in Machine.config. The following example enables HTTP GET, HTTP POST, and also SOAP and HTTP POST from localhost: <protocols> <add name="HttpSoap"/> <add name="HttpPost"/> <add name="HttpGet"/> <add name="HttpPostLocalhost"/> <!-- Documentation enables the documentation/test pages --> <add name="Documentation"/> </protocols> By adding these entries I am enabling the HTTPGET & HTTPPOST (After .Net 1.1 by default HTTPGET & HTTPPOST is disabled because of security concerns)The .NET Framework 1.1 defines a new protocol that is named HttpPostLocalhost. By default, this new protocol is enabled. This protocol permits invoking Web services that use HTTP POST requests from applications on the same computer. This is true provided the POST URL uses http://localhost, not http://hostname. This permits Web service developers to use the HTML-based test form to invoke the Web service from the same computer where the Web service resides. Classic ASP Code to call Web service <%Option Explicit Dim objRequest, objXMLDoc, objXmlNode Dim strRet, strError, strNome Dim strName strName= "deepa" Set objRequest = Server.createobject("MSXML2.XMLHTTP") With objRequest .open "GET", "http://localhost:3106/WebService1.asmx/HelloWorld?name=" & strName, False .setRequestHeader "Content-Type", "text/xml" .setRequestHeader "SOAPAction", "http://localhost:3106/WebService1.asmx/HelloWorld" .send End With Set objXMLDoc = Server.createobject("MSXML2.DOMDocument") objXmlDoc.async = false Response.ContentType = "text/xml" Response.Write(objRequest.ResponseText) %> In Line 6 I created an MSXML XMLHTTP object. Line 9 Using the HTTPGET protocol I am openinig connection to WebService Line 10:11 – setting the Header for the service In line 15, I am getting the output from the webservice in XML Doc format & reading the responseText(line 18). In line 9 if you observe I am passing the parameter strName to the Webservice You can pass multiple parameters to the Web service by just like any other QueryString Parameters. In similar fashion you can invoke the Web service using HTTPPost. Only you have to ensure that the form contains all th required parameters for webmethod.  Happy coding !!!!!!!

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  • I don't really understand "Backend/Serverside" when it comes to web-development?

    - by Mercfh
    In the Web development world, what exactly do backend/server-side programmers do? I guess I don't really understand the whole concept. I've done the HTML/CSS layouts and website design and a little bit of SQL with PHP (still enhancing my skills, it's more of a side project for me). I've also done a small amount of JavaScript/JQuery. But I don't understand the "backend" work, such as the scripting languages (Rails/Python/etc) and such. What exactly do you "do" with them? Are there any books on the subject? I'm not even sure what it means. Is it kinda like what Web Application Frameworks do? Or not so much?

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  • What are Web runtime environments and programming languages

    - by Bradly Spicer
    I've been looking into the details behind these two different categories: Web runtime environments Web application programming languages I believe I have the correct information and have phrased it correctly but I am unsure. I have been searching for a while but only find snippets of information or what I can see as useless information (I could be wrong). Here are my descriptions so far: Web runtime environments - A Run-time environment implements part of the core behaviour of any computer language and allows it to be modified via an API or embedded domain-specific language. A web runtime environment is similar except it uses web based languages such as Java-script which utilises the core behaviour a computer language. Another example of a Run-time environment web language is JsLibs which is a standable JavaScript development runtime environment for using JavaScript as a general all round scripting language. JavaScript is often used to create responsive interfaces which improve the user experience and provide dynamic functionality without having to wait for the server to react and direct to another page. Web application programming languages - A web application program language is something that mimics a traditional desktop application within a web page. For example, using PHP you can create forms and tables which use a database similar to that of Microsoft Excel. Some of the other languages for web application programming are: Ajax Perl Ruby Here are some of the resources used: http://en.wikipedia.org/wiki/Web_application_development http://code.google.com/p/jslibs/ I would like some confirmation that the descriptions I have created are correct as I am still slightly unsure as to whether I have hit the nail on the head.

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  • Google Web Fonts v2 propose de nouvelles polices de caractères facilement intégrables dans les sites Web

    Google Web Fonts v2 propose de nouvelles polices de caractères Facilement intégrables dans les sites Web Après la présentation de son nouveau réseau social Google +, et la mise à jour de l'interface utilisateur de son moteur de recherche, Google a procédé à une mise a jour de son API Google Fonts et du répertoire de polices Web Google Web Fonts. Disponible désormais en version finale, Google Web Fonts v2 intègre de nouvelles polices de caractères Web ainsi qu'une nouvelle interface permettant de visualiser rapidement les rendus sur des phrases. Par...

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  • Good Freelance models for web developers

    - by Matthew Underwood
    I am a web developer with four years of experience in PHP, MYSQL and experience in Javascript etc. One day I hope to develop a freelance career in web development. Areas of freelance that I am thinking of going towards includes Wordpress, Magento development along with bespoke applications. I am also thinking of doing some consultancy work for clients and businesses when I build up some more experience and technical knowledge. I want to offer a web development service to potential clients that plays on my strengths in what I know but most importantly has a market. Web development can cover so many subjects that its difficult to pick out the areas that have demand. I am also curious to find out if web developers offer services that bring in a monthly income e.g application maintenance or database maintenance? Is there a market for certain areas like WordPress plugins or bespoke applications? Are there certain things to avoid because of work duration, unrealistic client expectations or the fact that its impossible to find a market for it? As professional and experienced freelance web developers have you learned some important do's and don'ts? Is there certain services that the majority of web developers offer because its in high demand? This is the one area of web development freelancing that I cant get my head around. I know there is never a definitive answer but there must be some good practises and general consensus on this subject. Web designers design websites they offer a lump sum and get paid monthly sometimes to add new content, PPC and SEO consultants market sites to the top this will involve monthly payments, web development doesn’t seem so clear cut.

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  • Distributed Transaction Framework across webservices

    - by John Petrak
    I am designing a new system that has one central web service and several site web services which are spread across the country and some overseas. It has some data that must be identical on all sites. So my plan is to maintain that data in the central web service and then "sync" the data to sites. This includes inserts, edits and deletes. I see a problem when deleting, if one site has used the record, then I need to undo the delete that has happened on the other servers. This lead me to idea that I need some sort of transaction system that can work across different web servers. Before I design one from scratch, I would like to know if anyone has come across this sort of problem and if there are any frame works or even design patterns that might aid me?

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  • Java based portal framework

    - by Jatin
    We have an application that needs to be built and are looking for some Java based portal framework. In last few days I have gone through over 10 different open source option LiveRay, JetSpeed2, GateIn etc. But they are all too complex to be judged so quickly. Can anyone suggest some framework which is ease to use but has the functionality to handle complex situations. Most importantly, the portlets will run flash/HTML5 contant. Thanks.

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  • IIS, Web services, Time out error

    - by Eduard
    Hello, We’ve got problem with ASP.NET web application that uses web services of other system. I’ll describe our system architecture: we have web application and Windows services that uses the same web services. - Windows service works all the time and sends information to these web services once an hour. - Web application is designed for users to send the same information in manual behavior. The problem is when user sometimes tries to send information in manual behavior in the web application, .NET throws exception „The operation has timed out” (web?). At that time Windows service successfully sends all necessary information to these web services. IT stuff that supports these web services asserts that there was no any request from our web application at that time. Then we have restarted IIS (iisreset) and everything has started to work fine. This situation repeats all the time. There is no anti-virus or firewall on the server. My suggestion is that there is something wrong with IIS, patches, configuration or whatever? The only specific thing is that there are requests that can least 2 minutes (web service response wait time). We tried to reproduce this situation on our local test servers, but everything works fine. OS: Windows Server 2003 R2 .NET: 3.5

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  • Audio Framework in iPhone

    - by suse
    There are three major frameworks for iPhone audio : AVFoundation Framework CoreAudio Framework OpenAL Library And in turn CoreAudio Framework has AudioToolkit Framework and AudioUnit Framework Is this correct? Suppose I import AVFoundation Framework into my project and it in turn needs a feature which is provided by CoreAudio Framework.. Can it internally access the features of CoreAudio without importing CoreAudio framework into my project?

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  • What's the PHP framework equivalent of jQuery?

    - by Cortopasta
    jQuery made javascript so easy for me, I was able to get up and running in a couple of hours doing most tasks. Which PHP framework has similar ease of use and rapid development/write less ability? Or am I stuck basically learning a new language no matter what framework I decide on?

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  • Explain Entity Framework 4's connection strings

    - by metanaito
    I created an Entity Framework file. My database is called MyDB. My Entity Framework file is MyDB.edmx and I used an existing connection string (MyDBConnectionString) to generate the edmx model. It created two more connection strings: MyDBEntities MyDBContainer What are these for? They look exactly the same and both have the information from my old connection string. Do I still need my old connection string?

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  • Error reached after genereated entity framework classes by edmgen tool

    - by loviji
    Hello, First I read this question, but this knowledge did not help to solve my problems. In initial I've created edmx file by Visual Studio. Generated files with names: uqsModel.Designer.cs uqsModel.edmx This files are located on App_Code folder. And my web app work normally. In Web Config generated connectionstring automatically. <add name="uqsEntities" connectionString="metadata=res://*/App_Code.uqsModel.csdl|res://*/App_Code.uqsModel.ssdl|res://*/App_Code.uqsModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=aemloviji\sqlexpress;Initial Catalog=uqs;Integrated Security=True;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" /></connectionStrings> Then I had to generate classes by the instrument edmgen tool(full generation mode). Generated new files with names: uqsModel.cs uqsModel.csdl uqsModel.msl uqsModel.ssdl uqsViews.cs it save new classed to the folder where edmx files located before, and remove existing edmx files. And when page redirrects to any web page server side code fails. And problem: Unable to load the specified metadata resource. Some idea, please.

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  • Entity Framework and differences between Contains between SQL and objects using ToLower

    - by John Ptacek
    I have run into an "issue" I am not quite sure I understand with Entity Framework. I am using Entity Framework 4 and have tried to utilize a TDD approach. As a result, I recently implemented a search feature using a Repository pattern. For my test project, I am implementing my repository interface and have a set of "fake" object data I am using for test purposes. I ran into an issue trying to get the Contains clause to work for case invariant search. My code snippet for both my test and the repository class used against the database is as follows: if (!string.IsNullOrEmpty(Description)) { items = items.Where(r => r.Description.ToLower().Contains(Description.ToLower())); } However, when I ran my test cases the results where not populated if my case did not match the underlying data. I tried looking into what I thought was an issue for a while. To clear my mind, I went for a run and wondered if the same code with EF would work against a SQL back end database, since SQL will explicitly support the like command and it executed as I expected, using the same logic. I understand why EF against the database back end supports the Contains clause. However, I was surprised that my unit tests did not. Any ideas why other than the SQL server support of the like clause when I use objects I populate in a collection instead of against the database server? Thanks! John

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  • Entity Framework Batch Update and Future Queries

    - by pwelter34
    Entity Framework Extended Library A library the extends the functionality of Entity Framework. Features Batch Update and Delete Future Queries Audit Log Project Package and Source NuGet Package PM> Install-Package EntityFramework.Extended NuGet: http://nuget.org/List/Packages/EntityFramework.Extended Source: http://github.com/loresoft/EntityFramework.Extended Batch Update and Delete A current limitations of the Entity Framework is that in order to update or delete an entity you have to first retrieve it into memory. Now in most scenarios this is just fine. There are however some senerios where performance would suffer. Also, for single deletes, the object must be retrieved before it can be deleted requiring two calls to the database. Batch update and delete eliminates the need to retrieve and load an entity before modifying it. Deleting //delete all users where FirstName matches context.Users.Delete(u => u.FirstName == "firstname"); Update //update all tasks with status of 1 to status of 2 context.Tasks.Update( t => t.StatusId == 1, t => new Task {StatusId = 2}); //example of using an IQueryable as the filter for the update var users = context.Users .Where(u => u.FirstName == "firstname"); context.Users.Update( users, u => new User {FirstName = "newfirstname"}); Future Queries Build up a list of queries for the data that you need and the first time any of the results are accessed, all the data will retrieved in one round trip to the database server. Reducing the number of trips to the database is a great. Using this feature is as simple as appending .Future() to the end of your queries. To use the Future Queries, make sure to import the EntityFramework.Extensions namespace. Future queries are created with the following extension methods... Future() FutureFirstOrDefault() FutureCount() Sample // build up queries var q1 = db.Users .Where(t => t.EmailAddress == "[email protected]") .Future(); var q2 = db.Tasks .Where(t => t.Summary == "Test") .Future(); // this triggers the loading of all the future queries var users = q1.ToList(); In the example above, there are 2 queries built up, as soon as one of the queries is enumerated, it triggers the batch load of both queries. // base query var q = db.Tasks.Where(t => t.Priority == 2); // get total count var q1 = q.FutureCount(); // get page var q2 = q.Skip(pageIndex).Take(pageSize).Future(); // triggers execute as a batch int total = q1.Value; var tasks = q2.ToList(); In this example, we have a common senerio where you want to page a list of tasks. In order for the GUI to setup the paging control, you need a total count. With Future, we can batch together the queries to get all the data in one database call. Future queries work by creating the appropriate IFutureQuery object that keeps the IQuerable. The IFutureQuery object is then stored in IFutureContext.FutureQueries list. Then, when one of the IFutureQuery objects is enumerated, it calls back to IFutureContext.ExecuteFutureQueries() via the LoadAction delegate. ExecuteFutureQueries builds a batch query from all the stored IFutureQuery objects. Finally, all the IFutureQuery objects are updated with the results from the query. Audit Log The Audit Log feature will capture the changes to entities anytime they are submitted to the database. The Audit Log captures only the entities that are changed and only the properties on those entities that were changed. The before and after values are recorded. AuditLogger.LastAudit is where this information is held and there is a ToXml() method that makes it easy to turn the AuditLog into xml for easy storage. The AuditLog can be customized via attributes on the entities or via a Fluent Configuration API. Fluent Configuration // config audit when your application is starting up... var auditConfiguration = AuditConfiguration.Default; auditConfiguration.IncludeRelationships = true; auditConfiguration.LoadRelationships = true; auditConfiguration.DefaultAuditable = true; // customize the audit for Task entity auditConfiguration.IsAuditable<Task>() .NotAudited(t => t.TaskExtended) .FormatWith(t => t.Status, v => FormatStatus(v)); // set the display member when status is a foreign key auditConfiguration.IsAuditable<Status>() .DisplayMember(t => t.Name); Create an Audit Log var db = new TrackerContext(); var audit = db.BeginAudit(); // make some updates ... db.SaveChanges(); var log = audit.LastLog;

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  • My View on ASP.NET Web Forms versus MVC

    - by Ricardo Peres
    Introduction A lot has been said on Web Forms and MVC, but since I was recently asked about my opinion on the subject, here it is. First, I have to say that I really like both technologies and I don’t think any is going away – just remember SharePoint, which is built on top of Web Forms. I see them as complementary, targeting different needs and leveraging different skills. Let’s go through some of their differences. Rapid Application Development Rapid Application Development (RAD) is the development process by which you have an Integrated Development Environment (IDE), a visual design surface and a toolbox, and you drag components from the toolbox to the design surface and set their properties through a property inspector. It was introduced with some of the earliest Windows graphical IDEs such as Visual Basic and Delphi. With Web Forms you have RAD out of the box. Visual Studio offers a generally good (and extensible) designer for the layout of pages and web user controls. Designing a page may simply be about dragging controls from the toolbox, setting their properties and wiring up some events to event handlers, which are implemented in code behind .NET classes. Most people will be familiar with this kind of development and enjoy it. You can see what you are doing from the beginning. MVC also has designable pages – called views in MVC terminology – the problem is that they can be built using different technologies, some of which, at the moment (MVC 4) do not support RAD – Razor, for example. I believe it is just a matter of time for that to be implemented in Visual Studio, but it will mostly consist on HTML editing, and until that day comes, you have to live with source editing. Development Model Web Forms features the same development model that you are used to from Windows Forms and other similar technologies: events fired by controls and automatic persistence of their properties between postbacks. For that, it uses concepts such as view state, which some may love and others may hate, because it may be misused quite easily, but otherwise does its job well. Another fundamental concept is data binding, by which a collection of data can be fed to a control and have it render that data somehow – just thing of the GridView control. The focus is on the page, that’s where it all starts, and you can place everything in the same code behind class: data access, business logic, layout, etc. The controls take care of generating a great part of the HTML and JavaScript for you. With MVC there is no free lunch when it comes to data persistence between requests, you have to implement it yourself. As for event handling, that is at the core of MVC, in the form of controllers and action methods, you just don’t think of them as event handlers. In MVC you need to think more in HTTP terms, so action methods such as POST and GET are relevant to you, and may write actions to handle one or the other. Also of crucial importance is model binding: the way by which MVC converts your posted data into a .NET class. This is something that ASP.NET 4.5 Web Forms has introduced as well, but it is a cornerstone in MVC. MVC also has built-in validation of these .NET classes, which out of the box uses the Data Annotations API. You have full control of the generated HTML - except for that coming from the helper methods, usually small fragments - which requires a greater familiarity with the specifications. You normally rely much more on JavaScript APIs, they are even included in the Visual Studio template, that is because much less is done for you. Reuse It is difficult to accept a professional company/project that does not employ reuse. It can save a lot of time thus cutting costs significantly. Code reused in several projects matures as time goes by and helps developers learn from past experiences. ASP.NET Web Forms was built with reuse in mind, in the form of controls. Controls encapsulate functionality and are generally portable from project to project (with the notable exception of web user controls, those with an associated .ASCX markup file). ASP.NET has dozens of controls and it is very easy to develop new ones, so I believe this is a great advantage. A control can inject JavaScript code and external references as well as generate HTML an CSS. MVC on the other hand does not use controls – it is possible to use them, with some view engines like ASPX, but it is just not advisable because it breaks the flow – where do Init, Load, PreRender, etc, fit? The most similar to controls is extension methods, or helpers. They serve the same purpose – generating HTML, CSS or JavaScript – and can be reused between different projects. What differentiates them from controls is that there is no inheritance and no context – an extension method is just a static method which doesn’t know where it is being called. You also have partial views, which you can reuse in the same project, but there is no inheritance as well. This, in my view, is a weakness of MVC. Architecture Both technologies are highly extensible. I have writtenstarted writing a series of posts on ASP.NET Web Forms extensibility and will probably write another series on MVC extensibility as well. A number of scenarios are covered in any of these models, and some extensibility points apply to both, because, of course both stand upon ASP.NET. With Web Forms, if you’re like me, you start by defining you master pages, pages and controls, with some helper classes to glue everything. You may as well throw in some JavaScript, but probably you’re main work will be with plain old .NET code. The controls you define have the chance to inject JavaScript code and references, through either the ScriptManager or the page’s ClientScript object, as well as generating HTML and CSS code. The master page and page model with code behind classes offer a number of “hooks” by which you can change the normal way of things, for example, in a page you can access any control on the master page, add script or stylesheet references to its head and even change the page’s title. Also, with Web Forms, you typically have URLs in the form “/SomePath/SomePage.aspx?SomeParameter=SomeValue”, which isn’t really SEO friendly, no to mention the HTML that some controls produce, far from standards, optimization and best practices. In MVC, you also normally start by defining the master page (or layout) and views, which are the visible parts, and then define controllers on separate files. These controllers do not know anything about the views, except the names and types of the parameters that will be passed to and from them. The controller will be responsible for the data access and business logic, eventually relying on additional classes for this purpose. On a controller you only receive parameters and return a result, which may be a request for the rendering of a view, a redirection to another URL or a JSON object, to name just a few. The controller class does not know anything about the web, so you can effectively reuse it in a non-web project. This separation and the lack of programmatic access to the UI elements, makes it very difficult to implement, for example, something like SharePoint with MVC. OK, I know about Orchard, but it isn’t really a general purpose development framework, but instead, a CMS that happens to use MVC. Not having controls render HTML for you gives you in turn much more control over it – it is your responsibility to create it, which you can either consider a blessing or a curse, in the later case, you probably shouldn’t be using MVC at all. Also MVC URLs tend to be much more SEO-oriented, if you design your controllers and actions properly. Testing In a well defined architecture, you should separate business logic, data access logic and presentation logic, because these are all different things and it might even be the need to switch one implementation for another: for example, you might design a system which includes a data access layer, a business logic layer and two presentation layers, one on top of ASP.NET and the other with WPF; and the data access layer might be implemented first using NHibernate and later on switched for Entity Framework Code First. These changes are not that rare, so care should be taken in designing the system to make them possible. Web Forms are difficult to test, because it relies on event handlers which are only fired in web contexts, when a form is submitted or a page is requested. You can call them with reflection, but you have to set up a number of mocking objects first, HttpContext.Current first coming to my mind. MVC, on the other hand, makes testing controllers a breeze, so much that it even includes a template option for generating boilerplate unit test classes up from start. A well designed – from the unit test point of view - controller will receive everything it needs to work as parameters to its action methods, so you can pass whatever values you need very easily. That doesn’t mean, of course, that everything can be tested: views, for instance, are difficult to test without actually accessing the site, but MVC offers the possibility to compile views at build time, so that, at least, you know you don’t have syntax errors beforehand. Myths Some popular but unfounded myths around MVC include: You cannot use controls in MVC: not true, actually, you can, at least with the Web Forms (ASPX) view engine; the declaration and usage is exactly the same as with Web Forms; You cannot specify a base class for a view: with the ASPX view engine you can use the Inherits Page directive, with this and all the others you can use the pageBaseType and userControlBaseType attributes of the <page> element; MVC shields you from doing “bad things” on your views: well, you can place any code on a code block, at least with the ASPX view engine (you may be starting to see a pattern here), even data access code; The model is the entity model, tied to an O/RM: the model is actually any class that you use to pass values to a view, including (but generally not recommended) an entity model; Unit tests come with no cost: unit tests generally don’t cover the UI, although there are frameworks just for that (see WatiN, for example); also, for some tests, you will have to mock or replace either the HttpContext.Current property or the HttpContextBase class yourself; Everything is testable: views aren’t, without accessing the site; MVC relies on HTML5/some_cool_new_javascript_framework: there is no relation whatsoever, MVC renders whatever you want it to render and does not require any framework to be present. The thing is, the subsequent releases of MVC happened in a time when Microsoft has become much more involved in standards, so the files and technologies included in the Visual Studio templates reflect this, and it just happens to work well with jQuery, for example. Conclusion Well, this is how I see it. Some folks may think that I am being too rude on MVC, probably because I don’t like it, but that’s not true: like I said, I do like MVC and I am starting my new projects with it. I just don’t want to go along with that those that say that MVC is much superior to Web Forms, in fact, some things you can do much more easily with Web Forms than with MVC. I will be more than happy to hear what you think on this!

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  • Creating a Website Without a Framework [closed]

    - by James Jeffery
    I've been using PHP Frameworks for so long that I've actually forgot the "best practices" for create websites without one. Usually I will use Symfony, or more recently I've been using Laravel. A client wants a very simple website, but with certain parts of it dynamic. Due to the nature of the site using Wordpress, or a Framework, is out of the question. I'm a sucker for priding myself on my code, but I feel like I'm asking such a basic question that it's killing me to ask. But, what are the best practices for creating websites without a Framework? I like to live by the K.I.S.S (Keep It Simple Stupid!) method of thinking. So, my idea was to just create the .php pages that are required, do any page processing or database interaction on that page, then have the HTML below the closing PHP tag. I would have any helpers/functions in a functions.php file. This is what I remember doing way before I was using Frameworks, and to me it seems like a very old school way of doing things. I've not created a site without a Framework for literally 2+ years, so I've lost my way with the basics. Any advice would be greatly appreciated.

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  • What java web application framework to use?

    - by frohiky
    One of the main products of my company is an Oracle Forms (and Reports) based application, that "needs" to be re-written in another technology. Why? Users want a more rich interface experience, and we want, preferably, to reduce costs with an open source application server. For this (HUGE) project, we intend to use a java web application framework, keep these points in mind: We have: hundreds of tables on our database (the ORM must be as flexible as possible); some logic which is (and will still be) based on PL/SQL procedures/functions/packages; a lot of CRUDs (the application itself is of an considerable size); a demand to work with/generate documents and workflows; an intranet based user environment; We want: to offer a RIA interface experience; use (if possible) an open source app server; a rapid (as possible) development framework; a somewhat mature framework with a "wise" roadmap (and a considerable community support); a MVC approach combined with JS or GWT widgets (e.g. Vaadin or SmartGWT); Well, in the past weeks I've read a lot of posts, Q&As on stackoverflow, and much more: Wicket, JSF, Tapestry, Grails, GWT, Struts2, Play, Spring, Seam, Echo, .... the list goes on! I've even researched about Alfresco..! The obvious question: Which one to use? At this time, any insight, recommendation, shared experience, advice will be more then welcome!

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  • iphone app crash, crash log posted, help please

    - by terry jones
    hi, we recenty had a programmer to develop a program for us but seems to have left us in the lurch with a part functioning application. my boss isnt happy at moment as we have spent a few hundred and have nothing to show for it at the moment. can anyone see any information in the crash log below as its gibberish to me. Incident Identifier: D4F482FE-167A-44BB-A642-7E8EF7B568BF CrashReporter Key: 2d8e2d17415c55e48ec20dae7cbe6c36b33bcce1 Process: Logistics [328] Path: /var/mobile/Applications/32A03443-ADE3-4AAE-AB32-05DB7BEB15D8/Logistics.app/Logistics Identifier: Logistics Version: ??? (???) Code Type: ARM (Native) Parent Process: launchd [1] Date/Time: 2010-03-29 17:07:06.474 +0200 OS Version: iPhone OS 3.1.2 (7D11) Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x31a279ac 0x319a9000 + 518572 1 libSystem.B.dylib 0x31a2799c 0x319a9000 + 518556 2 libSystem.B.dylib 0x31a2798e 0x319a9000 + 518542 3 libSystem.B.dylib 0x31a3c63a 0x319a9000 + 603706 4 libstdc++.6.dylib 0x3361d3b0 0x335d8000 + 283568 5 libobjc.A.dylib 0x32401858 0x323fc000 + 22616 6 libstdc++.6.dylib 0x3361b776 0x335d8000 + 276342 7 libstdc++.6.dylib 0x3361b7ca 0x335d8000 + 276426 8 libstdc++.6.dylib 0x3361b896 0x335d8000 + 276630 9 libobjc.A.dylib 0x32400714 0x323fc000 + 18196 10 CoreFoundation 0x32537b86 0x32511000 + 158598 11 CoreFoundation 0x32537b24 0x32511000 + 158500 12 Foundation 0x3145ddaa 0x313ed000 + 462250 13 Foundation 0x31454ee2 0x313ed000 + 425698 14 Logistics 0x00002df8 0x1000 + 7672 15 CoreFoundation 0x32569ede 0x32511000 + 364254 16 UIKit 0x32ba205e 0x32b60000 + 270430 17 UIKit 0x32bf4d4e 0x32b60000 + 609614 18 CoreFoundation 0x32569ede 0x32511000 + 364254 19 UIKit 0x32ba205e 0x32b60000 + 270430 20 UIKit 0x32ba1ffe 0x32b60000 + 270334 21 UIKit 0x32ba1fd0 0x32b60000 + 270288 22 UIKit 0x32ba1d2a 0x32b60000 + 269610 23 UIKit 0x32ba263e 0x32b60000 + 271934 24 UIKit 0x32ba1656 0x32b60000 + 267862 25 UIKit 0x32ba1032 0x32b60000 + 266290 26 UIKit 0x32b9d928 0x32b60000 + 252200 27 UIKit 0x32b9d3a0 0x32b60000 + 250784 28 GraphicsServices 0x32913b72 0x3290f000 + 19314 29 CoreFoundation 0x32567c26 0x32511000 + 355366 30 CoreFoundation 0x32567356 0x32511000 + 353110 31 GraphicsServices 0x32912cb8 0x3290f000 + 15544 32 GraphicsServices 0x32912d64 0x3290f000 + 15716 33 UIKit 0x32b62768 0x32b60000 + 10088 34 UIKit 0x32b6146c 0x32b60000 + 5228 35 Logistics 0x000023c4 0x1000 + 5060 36 Logistics 0x00002380 0x1000 + 4992 Thread 1: 0 libSystem.B.dylib 0x319a9818 0x319a9000 + 2072 1 libSystem.B.dylib 0x319abff8 0x319a9000 + 12280 2 CoreFoundation 0x325677f6 0x32511000 + 354294 3 CoreFoundation 0x32567356 0x32511000 + 353110 4 WebCore 0x305d59de 0x30578000 + 383454 5 libSystem.B.dylib 0x319cd92a 0x319a9000 + 149802 Thread 2: 0 libSystem.B.dylib 0x31a28228 0x319a9000 + 520744 1 libSystem.B.dylib 0x319d3244 0x319a9000 + 172612 2 libSystem.B.dylib 0x319d2d0e 0x319a9000 + 171278 3 CoreMedia 0x33552b04 0x3354f000 + 15108 4 CoreMedia 0x33552a3a 0x3354f000 + 14906 5 MediaToolbox 0x31e1b50c 0x31e18000 + 13580 6 libSystem.B.dylib 0x319cd92a 0x319a9000 + 149802 Thread 0 crashed with ARM Thread State: r0: 0x00000000 r1: 0x00000000 r2: 0x00000001 r3: 0x383c43cc r4: 0x00000006 r5: 0x3361b30d r6: 0x00172f5c r7: 0x2fffe97c r8: 0x2fffe968 r9: 0x00000065 r10: 0x00007150 r11: 0x334bd104 ip: 0x00000025 sp: 0x2fffe97c lr: 0x31a279a3 pc: 0x31a279ac cpsr: 0x00000010 Binary Images: 0x1000 - 0x6fff +Logistics armv6 <350fc970d77b4d8d67bf43f4d7f2a68c> /var/mobile/Applications/32A03443-ADE3-4AAE-AB32-05DB7BEB15D8/Logistics.app/Logistics 0x2c000 - 0x2dfff dns.so armv7 <35ac487c38e38ed5810d5ed0d5c67546> /usr/lib/info/dns.so 0x2fe00000 - 0x2fe24fff dyld armv7 <5db9f5d0275997de58efff111816706e> /usr/lib/dyld 0x30028000 - 0x3004ffff ContentIndex armv7 <67165d749b79ad4b14c8a24f14dab29d> /System/Library/PrivateFrameworks/ContentIndex.framework/ContentIndex 0x30050000 - 0x30054fff ITSync armv7 <a0bf9af6f4ebc7e5977d3da853671162> /System/Library/PrivateFrameworks/ITSync.framework/ITSync 0x30149000 - 0x3016efff AppSupport armv7 <ca2e9a4f0475af20028968840ab94ecf> /System/Library/PrivateFrameworks/AppSupport.framework/AppSupport 0x30175000 - 0x3017ffff MobileCoreServices armv7 <36d71cd8dd49f5d5addb356f449b562a> /System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices 0x30184000 - 0x30184fff Accelerate armv7 <939f94df6c7e6e7a090ddee1ec09c844> /System/Library/PrivateFrameworks/Accelerate.framework/Accelerate 0x30185000 - 0x301b7fff iCalendar armv7 <235e05f7e167e6dbbd75528a4a37f3a3> /System/Library/PrivateFrameworks/iCalendar.framework/iCalendar 0x301b8000 - 0x301c3fff libz.1.dylib armv7 <8faba7ded9b3527ccf54c2f224f9a12f> /usr/lib/libz.1.dylib 0x301c4000 - 0x301eefff CoreText armv7 <821e9c7c935b6a8d735e2d2d9ebcee04> /System/Library/PrivateFrameworks/CoreText.framework/CoreText 0x301f6000 - 0x301fffff IAP armv7 <36e57cf20df9fcea10ebd0d1c3526a9a> /System/Library/PrivateFrameworks/IAP.framework/IAP 0x30247000 - 0x30279fff MessageUI armv7 <51d0498fb3dba758dae660754f1afb9c> /System/Library/Frameworks/MessageUI.framework/MessageUI 0x3027a000 - 0x3027efff MobileMusicPlayer armv7 <f0e7d2d2d69e9cc2a84e20bced0e1d07> /System/Library/PrivateFrameworks/MobileMusicPlayer.framework/MobileMusicPlayer 0x302c6000 - 0x302cefff CoreVideo armv7 <9259f5ae2a74b53e4f13b27fa3d511e8> /System/Library/PrivateFrameworks/CoreVideo.framework/CoreVideo 0x30348000 - 0x3034afff CrashReporterSupport armv7 <a0a25c381e45f8a3f4ec63bcb17a5a39> /System/Library/PrivateFrameworks/CrashReporterSupport.framework/CrashReporterSupport 0x304a3000 - 0x304cefff MIME armv7 <55a4de1d243273ee7ef4e86a85d591f5> /System/Library/PrivateFrameworks/MIME.framework/MIME 0x304cf000 - 0x3050ffff libsqlite3.dylib armv7 <c2b5985d8307d73b39140e76adfd2eb7> /usr/lib/libsqlite3.dylib 0x3054a000 - 0x30569fff Bom armv7 <37e498957087af50894156808e0a486b> /System/Library/PrivateFrameworks/Bom.framework/Bom 0x30578000 - 0x30a4efff WebCore armv7 <4e2bac4e01a15979c9ac096f78280db0> /System/Library/PrivateFrameworks/WebCore.framework/WebCore 0x30a58000 - 0x30b12fff Message armv7 <a5a7de97c57a6965f27547bf8ff8810c> /System/Library/PrivateFrameworks/Message.framework/Message 0x30b13000 - 0x30b13fff vecLib armv7 <4eb91bf56603dc0db6784d8d3240bfa8> /System/Library/PrivateFrameworks/Accelerate.framework/Frameworks/vecLib.framework/vecLib 0x30c1e000 - 0x30c23fff ProtocolBuffer armv7 <91af9ee5b2f271cbd8c138b3c61e508d> /System/Library/PrivateFrameworks/ProtocolBuffer.framework/ProtocolBuffer 0x30d05000 - 0x30d29fff SystemConfiguration armv7 <c57df668b510f025ee5a173ad30fb48e> /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration 0x30d6c000 - 0x30decfff QuartzCore armv7 <af0722911ffc74fc08075e9831a6222e> /System/Library/Frameworks/QuartzCore.framework/QuartzCore 0x30e5d000 - 0x30e72fff libresolv.9.dylib armv7 <2b6a9404652dd2b5abd1c6a5583e8533> /usr/lib/libresolv.9.dylib 0x30e73000 - 0x30ebdfff GMM armv7 <72c87b3b08ab4359802b6efed472bf46> /System/Library/PrivateFrameworks/GMM.framework/GMM 0x30ec7000 - 0x30ed0fff SpringBoardServices armv7 <17ca8b5262cd6484d41efdc72c6fd057> /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices 0x30ed1000 - 0x30f43fff LDAP armv7 <a5f6d51ebcab28eeabe0f2bbbdeb8cc7> /System/Library/PrivateFrameworks/LDAP.framework/LDAP 0x30fe6000 - 0x30ffbfff OpenGLES armv7 <be80a5e4c55c2920be2c31f740bb9dba> /System/Library/Frameworks/OpenGLES.framework/OpenGLES 0x31003000 - 0x31009fff libkxld.dylib armv7 <04ab19af95239c12a98539478eebc560> /usr/lib/system/libkxld.dylib 0x3114f000 - 0x311acfff MediaPlayer armv7 <1021fc5da1419ba297464f71049ad084> /System/Library/Frameworks/MediaPlayer.framework/MediaPlayer 0x311ad000 - 0x311cefff CoreLocation armv7 <a3857b8324f90ae48994df15fdfbcda6> /System/Library/Frameworks/CoreLocation.framework/CoreLocation 0x311d5000 - 0x31214fff Celestial armv7 <f8bde8e040e6aac9e36e0aa8b43ee8cc> /System/Library/PrivateFrameworks/Celestial.framework/Celestial 0x312f6000 - 0x312fcfff libgcc_s.1.dylib armv7 <263b2691cd12171b31fa600716104e4a> /usr/lib/libgcc_s.1.dylib 0x31338000 - 0x31367fff libCGFreetype.A.dylib armv7 <2ec5ad6812f5ea3859cb4189d62b7265> /System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib 0x31393000 - 0x313cafff IOKit armv7 <0afabe8bf08fc163ba8e4ed614092cd3> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit 0x313e9000 - 0x313eafff IOMobileFramebuffer armv7 <9d9f0254b5b64ced3d58191748f3027b> /System/Library/PrivateFrameworks/IOMobileFramebuffer.framework/IOMobileFramebuffer 0x313ed000 - 0x314e2fff Foundation armv7 <ede5b943f529ce1b862c15dc876992c1> /System/Library/Frameworks/Foundation.framework/Foundation 0x314ed000 - 0x31599fff libxml2.2.dylib armv7 <a491bfc5f062f33185a3f98969bae3c2> /usr/lib/libxml2.2.dylib 0x315fc000 - 0x315fefff MobileInstallation armv7 <b8ebf64838bdfe5315dab5745482e30c> /System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation 0x31919000 - 0x31923fff MobileBluetooth armv7 <bc6cf9563c3a14a86cde6ddf6cc3ed45> /System/Library/PrivateFrameworks/MobileBluetooth.framework/MobileBluetooth 0x31926000 - 0x319a8fff WebKit armv7 <b9b7246a09f5db68e44497d318cb3ab6> /System/Library/PrivateFrameworks/WebKit.framework/WebKit 0x319a9000 - 0x31aa0fff libSystem.B.dylib armv7 <3f94d4b13815a93cbdfc6c7dc2afe5b4> /usr/lib/libSystem.B.dylib 0x31aa2000 - 0x31b8bfff AudioToolbox armv7 <393fa1e155bb0523c2a90555bb394498> /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox 0x31b8d000 - 0x31bfcfff CFNetwork armv7 <b55671f2472fdae3f811ae6f636b4e2e> /System/Library/Frameworks/CFNetwork.framework/CFNetwork 0x31cb2000 - 0x31d12fff AddressBookUI armv7 <5e5b83d3c9e2c0676671feebfb8d37c9> /System/Library/Frameworks/AddressBookUI.framework/AddressBookUI 0x31d19000 - 0x31d21fff AccountSettings armv7 <37a8916d02c399bfccc56e92ad68e84b> /System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings 0x31d28000 - 0x31d34fff MobileDeviceLink armv7 <d757be3521f8ed71709728790c29bdb2> /System/Library/PrivateFrameworks/MobileDeviceLink.framework/MobileDeviceLink 0x31d3a000 - 0x31d3cfff Notes armv7 <f7c579348cb58b5f2218c042cf46f422> /System/Library/PrivateFrameworks/Notes.framework/Notes 0x31d59000 - 0x31d5cfff IOSurface armv7 <81661b8e151a9af6ce5704a728e12dc7> /System/Library/PrivateFrameworks/IOSurface.framework/IOSurface 0x31e18000 - 0x31ed8fff MediaToolbox armv7 <b9023dc22073ab28f6fb8ecbe00951c2> /System/Library/PrivateFrameworks/MediaToolbox.framework/MediaToolbox 0x31ed9000 - 0x31f8dfff JavaScriptCore armv7 <d3434c868a9a0f4016ed32ba90a35c4d> /System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore 0x31f91000 - 0x320e6fff CoreGraphics armv7 <5852bd39fd1ef304da7b017949755cab> /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics 0x32150000 - 0x3217cfff DAVKit armv7 <80cf41b34d377d21d406fcb6835fbf77> /System/Library/PrivateFrameworks/DAVKit.framework/DAVKit 0x321d4000 - 0x322d5fff libicucore.A.dylib armv7 <1081389fef915d9b8858d0dfff04568e> /usr/lib/libicucore.A.dylib 0x322d6000 - 0x322d9fff ActorKit armv7 <c81b8278a35c6e8293aaf7c55811ba2d> /System/Library/PrivateFrameworks/ActorKit.framework/ActorKit 0x322da000 - 0x32388fff DataAccess armv7 <e9225a8b94fe76047095ebecd6fd58c5> /System/Library/PrivateFrameworks/DataAccess.framework/DataAccess 0x32389000 - 0x32390fff libbz2.1.0.dylib armv7 <6675987a84fc3d127305c175085914aa> /usr/lib/libbz2.1.0.dylib 0x323fc000 - 0x32499fff libobjc.A.dylib armv7 <1a57ecb9f5c0f274a274b3eb53df48ed> /usr/lib/libobjc.A.dylib 0x324b5000 - 0x324cbfff AddressBook armv7 <c21d7ab21d7e67f84c487bc278568bbe> /System/Library/Frameworks/AddressBook.framework/AddressBook 0x324d6000 - 0x32510fff CoreTelephony armv7 <5b68ed8ffac45237acc948e9d5bb5e83> /System/Library/PrivateFrameworks/CoreTelephony.framework/CoreTelephony 0x32511000 - 0x325bbfff CoreFoundation armv7 <51c03f1f8755868781e3e719d8df7b6f> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x325ca000 - 0x3268bfff MusicLibrary armv7 <ce4922bef1cc1d6706da32480c2272bd> /System/Library/PrivateFrameworks/MusicLibrary.framework/MusicLibrary 0x3268c000 - 0x3268efff AppleJPEG armv7 <af51b716dce446178b366a8d5af48ebb> /System/Library/PrivateFrameworks/AppleJPEG.framework/AppleJPEG 0x3268f000 - 0x326adfff MobileSync armv7 <1eecaede37e5d042180473311efccda3> /System/Library/PrivateFrameworks/MobileSync.framework/MobileSync 0x32860000 - 0x3286bfff PersistentConnection armv7 <73c2bec8b5f870ea528f359c2374f19c> /System/Library/PrivateFrameworks/PersistentConnection.framework/PersistentConnection 0x3286c000 - 0x328f2fff ImageIO armv7 <ea76d0fd3ca8c1a6104bc0f013255e2d> /System/Library/PrivateFrameworks/ImageIO.framework/ImageIO 0x3290f000 - 0x32918fff GraphicsServices armv7 <5387c7197570ac7df97759c0402d453d> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices 0x32933000 - 0x3299bfff PhotoLibrary armv7 <0535fc553452b7b6cc25ac990cff4a40> /System/Library/PrivateFrameworks/PhotoLibrary.framework/PhotoLibrary 0x3299f000 - 0x329ccfff Calendar armv7 <52446b9087d707210cb515b0894afee5> /System/Library/PrivateFrameworks/Calendar.framework/Calendar 0x329d6000 - 0x329fffff TextInput armv7 <2e983bf3876bfeaf7151aa8a0e68dabc> /System/Library/PrivateFrameworks/TextInput.framework/TextInput 0x32a01000 - 0x32a02fff CoreSurface armv7 <f3aae0195e4510657029b19161138593> /System/Library/PrivateFrameworks/CoreSurface.framework/CoreSurface 0x32a09000 - 0x32a0bfff Camera armv7 <81c49c0f094225be8a6ad129a8641c86> /System/Library/PrivateFrameworks/Camera.framework/Camera 0x32a56000 - 0x32a7efff libvDSP.dylib armv7 <d846b621ce13b16241ac2d32ddd28615> /System/Library/PrivateFrameworks/Accelerate.framework/Frameworks/vecLib.framework/libvDSP.dylib 0x32a81000 - 0x32a86fff liblockdown.dylib armv7 <5b665cd59d9884ceecec6441fc42bc14> /usr/lib/liblockdown.dylib 0x32a8a000 - 0x32a96fff DataAccessExpress armv7 <ad1aeb0c6df9b0b917c1c99405e36cc4> /System/Library/PrivateFrameworks/DataAccessExpress.framework/DataAccessExpress 0x32ab5000 - 0x32ac3fff TelephonyUI armv7 <b34206a34dfb1cc4183274cc6c0a3f36> /System/Library/PrivateFrameworks/TelephonyUI.framework/TelephonyUI 0x32ac4000 - 0x32ae5fff MobileQuickLook armv7 <06cb03b3f1bd2c5bfa27ba2aef0849b2> /System/Library/PrivateFrameworks/MobileQuickLook.framework/MobileQuickLook 0x32aed000 - 0x32b07fff libRIP.A.dylib armv7 <0dc4e83b63c1350517949e24204817fb> /System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib 0x32b09000 - 0x32b2dfff Security armv7 <3a3406fe12445942f4d767c7fa4c24ce> /System/Library/Frameworks/Security.framework/Security 0x32b2e000 - 0x32b5bfff VideoToolbox armv7 <08b68b92f987faff46a127f6f78708a0> /System/Library/PrivateFrameworks/VideoToolbox.framework/VideoToolbox 0x32b60000 - 0x33524fff UIKit armv7 <47c9d61f9cbe72938d1bfb1588306b97> /System/Library/Frameworks/UIKit.framework/UIKit 0x3354f000 - 0x33580fff CoreMedia armv7 <584770f5de9c599a2d420eb8666921ac> /System/Library/PrivateFrameworks/CoreMedia.framework/CoreMedia 0x33586000 - 0x33588fff ArtworkCache armv7 <66057eb40ba62cb544fe00ac4f2b498e> /System/Library/PrivateFrameworks/ArtworkCache.framework/ArtworkCache 0x33594000 - 0x33599fff MBX2D armv7 <ae091892e4419221d25f8db9307cedf0> /System/Library/PrivateFrameworks/MBX2D.framework/MBX2D 0x3359a000 - 0x335d7fff CoreAudio armv7 <1eb427066a911d979a024e445464a067> /System/Library/Frameworks/CoreAudio.framework/CoreAudio 0x335d8000 - 0x33621fff libstdc++.6.dylib armv7 <99401ed10ec4d5608ce23ec33dd757c6> /usr/lib/libstdc++.6.dylib 0x33627000 - 0x33632fff libbsm.0.dylib armv7 <03f3879bad1802636dadeb457ee74cb2> /usr/lib/libbsm.0.dylib

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  • Using MVC2 to update an Entity Framework v4 object with foreign keys fails

    - by jbjon
    With the following simple relational database structure: An Order has one or more OrderItems, and each OrderItem has one OrderItemStatus. Entity Framework v4 is used to communicate with the database and entities have been generated from this schema. The Entities connection happens to be called EnumTestEntities in the example. The trimmed down version of the Order Repository class looks like this: public class OrderRepository { private EnumTestEntities entities = new EnumTestEntities(); // Query Methods public Order Get(int id) { return entities.Orders.SingleOrDefault(d => d.OrderID == id); } // Persistence public void Save() { entities.SaveChanges(); } } An MVC2 app uses Entity Framework models to drive the views. I'm using the EditorFor feature of MVC2 to drive the Edit view. When it comes to POSTing back any changes to the model, the following code is called: [HttpPost] public ActionResult Edit(int id, FormCollection formValues) { // Get the current Order out of the database by ID Order order = orderRepository.Get(id); var orderItems = order.OrderItems; try { // Update the Order from the values posted from the View UpdateModel(order, ""); // Without the ValueProvider suffix it does not attempt to update the order items UpdateModel(order.OrderItems, "OrderItems.OrderItems"); // All the Save() does is call SaveChanges() on the database context orderRepository.Save(); return RedirectToAction("Details", new { id = order.OrderID }); } catch (Exception e) { return View(order); // Inserted while debugging } } The second call to UpdateModel has a ValueProvider suffix which matches the auto-generated HTML input name prefixes that MVC2 has generated for the foreign key collection of OrderItems within the View. The call to SaveChanges() on the database context after updating the OrderItems collection of an Order using UpdateModel generates the following exception: "The operation failed: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. When a change is made to a relationship, the related foreign-key property is set to a null value. If the foreign-key does not support null values, a new relationship must be defined, the foreign-key property must be assigned another non-null value, or the unrelated object must be deleted." When debugging through this code, I can still see that the EntityKeys are not null and seem to be the same value as they should be. This still happens when you are not changing any of the extracted Order details from the database. Also the entity connection to the database doesn't change between the act of Getting and the SaveChanges so it doesn't appear to be a Context issue either. Any ideas what might be causing this problem? I know EF4 has done work on foreign key properties but can anyone shed any light on how to use EF4 and MVC2 to make things easy to update; rather than having to populate each property manually. I had hoped the simplicity of EditorFor and DisplayFor would also extend to Controllers updating data. Thanks

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  • Add Or Condition to Entity in Entity Framework

    - by Blakewell
    Can you add an "Or" condition to an entity in the entity framework? For example something like: Property1 == (1 or 2 or 3) The message I get when putting the value of "1 || 2 || 3" or "1,2,3" or "1 or 2 or 3" returns this message: condition is not compatible with the type of the member

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  • How can I enjoy or avoid designing every web application I make ?

    - by schmrz
    I know this sounds silly, but I'm having huge problems (ok, not that huge, but still...) problems when I get an idea for a web project, small or big. The instant turn off is when I remember that I have to code the html/css by hand again and again. I like programming a lot more that designing web sites, and I simply don't enjoy designing them as much as I enjoy programming them. With that said, I also prefer simple and minimalistic designs. What is your approach in web design, how do you make it enjoyable (at least a little bit)?

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  • Hands-on Entity Framework

    People keep saying that Entity Framework is simple to learn. Simple? Well, finally, we're going to be forced to agree, thanks to James Johnson's new series on learning EF the hands-on way.

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