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• JAX-WS client with Axis service

  - by Jon

  I'm relatively new to web services, but I need to integrate a call to an existing service in my application. Ideally, I'd like to use JAX-WS because I'm looking for the simplest, quickest-to-develop solution on my end, and MyEclipse is able to generate a JAX-WS client from a WSDL. Unfortunately, the WSDL I've inherited was built from what appears to be Axis using RPC. Will this still work? When trying to generate the code, I get these errors, and the web searches I've found seem to say that it's the service end that needs to upgrade: <restriction base="soapenc:Array"> <attribute ref="soapenc:arrayType" wsdl:arrayType="impl:MyTypeList[]" /> </restriction> WS-I: (BP2108) An Array declaration uses - restricts or extends - the soapEnc:Array type, or the wsdl:arrayType attribute is used in the type declaration WS-I: (BP2122) A wsdl:types element contained a data type definition that is not an XML schema definition <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://ws.host.com" use="encoded" / WS-I: (BP2406) The use attribute of a soapbind:body, soapbind:fault, soapbind:header and soapbind:headerfault does not have value of "literal".

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• Aspnet_merge error has no detail

  - by dang57

  I have been attempting to add a Deployment Project to my web app. When I build it, I get a message "An error occurred when merging assemblies: Exception from HRESULT: 0x806D0004". There is no other detail, like ILMerge error, or Duplicate Name. I have "verbosity" set to "Diagnostic", and this is the output: Command: C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\aspnet_merge.exe "\...XXX...\My Documents\Visual Studio 2005\Projects\XXX_deploy\Debug" -o XXX_deploy -debug -copyattrs The "AspNetMerge" task is using "aspnet_merge.exe" from "C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\aspnet_merge.exe". Utility to merge precompiled ASP.NET assemblies. An error occurred when merging assemblies: Exception from HRESULT: 0x806D0004 C:\Program Files\MSBuild\Microsoft\WebDeployment\v8.0\Microsoft.WebDeployment.targets(474,9): error MSB6006: "aspnet_merge.exe" exited with code 1. Done executing task "AspNetMerge" -- FAILED. Done building target "AspNetMerge" in project "XXX_deploy.wdproj" -- FAILED. Done building project "XXX_deploy.wdproj" -- FAILED. Build FAILED. I have tried running the command via the Command prompt, but it does not give any additional information. I have also removed EVERYTHING from the project, including references, style sheets, forms, tableadapters. I still have a web.config, but deleted all app-specific lines. I added a single new form named Default. I have even tried renaming that form to DefaultX, just in case there was another Default out there. I still get the error. What else can I look for? I'm running VS 2005 v8.05. Thanks Dan

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• PDFObject load event

  - by Priyank

  Hi. We are trying to load a pdf file in web browser using pdfobject javascript api. Currently the size of the pdf's that we are trying to display is close to 10MBs. This creates a long delay in displaying a PDF on web page; while the complete PDF gets downloaded. We need to remove this lag by achieving either of the alternatives: Show a progress bar until the PDF is actually displayed. We couldn't find an event which is triggered and can be used to find out if pdf is visible now. This lacking doesn't let us decide when to stop showing progress bar/spinner OR lazy load the PDF such that it gets displayed as soon as first page gets loaded. With that ateast user will have a visual indication as to something is happening. We couldn'find anything in pdf object that lets us do a lazy load. User alternative pdf rendering api; this is a low priority as we already have complete code in place; but in an event of first 2 alternatives not being met; we'd have to consider this option. So please feel free to suggest. Any other ideas as to how user interaction can be made more intuitive or pleasant; would be welcome. Cheers

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• C# Process Exited event not firing from within webservice

  - by davidpizon

  I am attempting to wrap a 3rd party command line application within a web service. If I run the following code from within a console application: Process process= new System.Diagnostics.Process(); process.StartInfo.FileName = "some_executable.exe"; // Do not spawn a window for this process process.StartInfo.CreateNoWindow = true; process.StartInfo.ErrorDialog = false; // Redirect input, output, and error streams process.StartInfo.UseShellExecute = false; process.StartInfo.RedirectStandardOutput = true; process.StartInfo.RedirectStandardError = true; process.StartInfo.RedirectStandardInput = true; process.EnableRaisingEvents = true; process.ErrorDataReceived += (sendingProcess, eventArgs) => { // Make note of the error message if (!String.IsNullOrEmpty(eventArgs.Data)) if (this.WarningMessageEvent != null) this.WarningMessageEvent(this, new MessageEventArgs(eventArgs.Data)); }; process.OutputDataReceived += (sendingProcess, eventArgs) => { // Make note of the message if (!String.IsNullOrEmpty(eventArgs.Data)) if (this.DebugMessageEvent != null) this.DebugMessageEvent(this, new MessageEventArgs(eventArgs.Data)); }; process.Exited += (object sender, EventArgs e) => { // Make note of the exit event if (this.DebugMessageEvent != null) this.DebugMessageEvent(this, new MessageEventArgs("The command exited")); }; process.Start(); process.StandardInput.Close(); process.BeginOutputReadLine(); process.BeginErrorReadLine(); process.WaitForExit(); int exitCode = process.ExitCode; process.Close(); process.Dispose(); if (this.DebugMessageEvent != null) this.DebugMessageEvent(this, new MessageEventArgs("The command exited with code: " + exitCode)); All events, including the "process.Exited" event fires as expected. However, when this code is invoked from within a web service method, all events EXCEPT the "process.Exited" event fire. The execution appears to hang at the line: process.WaitForExit(); Would anyone be able to shed some light as to what I might be missing?

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• Weird certificate error when trying to generate web service client from secure site

  - by Vlad

  Dear stack overflow. I get a weird error when trying to use AXIS1.4 Wsdl2Java tool to generate client code for the web service that is installed on the secure IIS site. When I run the tool I get the following SSL exception: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching XXXXXXX.net found at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1 591) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:187) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:181) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Clien tHandshaker.java:975) at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHa ndshaker.java:123) at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:5 16) at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.jav a:454) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.j ava:884) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SS LSocketImpl.java:1096) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketIm pl.java:1123) Weird thing is that this error only occurs when I run WSDL2Java, and only for this particular server. I have another web server with the identical set-up and everything works fine there. I triple checked all the keystores and it looks like all the CA certificates are loaded correctly. I tried using another server with the identical setup, and was able to generate the client proxy code without any problems. Weird thing is that if I use the code generated from the other server against the weird server everything works fine. It is only Wsdl2Java that is giving me a problem.

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• Getting started with Spring 3 Web MVC - Setting everything up

  - by user126379

  Hi, I'm trying to get started with JAVA/Eclipse/Spring MVC but can't seem to find a "dummies" or "step-by-step" guide for setting everything up and creating the simplest proof-of-concept application. I found http://static.springsource.org/docs/...-step-by-step/ but there seem to be differences between Spring 2.5 and Spring 3 so i'm looking for something for Spring 3. Also, the tutorial for Spring 2.5 focuses on building the application usign Ant - This i will certainly be doing for releasing but when working within Eclipse i want to have set up the project so that i can use breakpoints/debugging and this is not covered at all. I've downloaded Eclipse, Tomcat and the Spring 3 Framework but that's about it and within the downloaded Spring Framework documentation it states: 2.3 New getting started tutorial There is now a new getting started tutorial for developing a basic Spring 3.0 MVC web application. This tutorial is a separate document that can be found at the Spring Documentation page However, i can't seem to find such a tutorial on the linked page. My main problem at the moment, as seems to be the case for many people trying to get started with Spring, is that i can't seem to get everything set up. I've got a copy of Expert Spring MVC and Web Flow and i've also found this tutorial but i don't know if the setups they describe are still relevant and whether they will allow debugging. Can anyone please give some direction? Thanks

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• iphone bookmarklet cookie persistence

  - by Larry Davis

  I have an iphone (jqtouch based) web app that uses cookies for authentication. The use flow is as follows : user goes to the mobile landing page and is instructed to save the page as a bookmarklet on their home page. they launch the bookmarklet to go to a login page to login and get a cookie. the cookie works and they can navigate throughout the web site. However this session cookie is not persistent. If they leave safari and then restart using the saved bookmarklet, the cookies set during their previous session are gone. Just using safari (ie: launch safari directly rather than through the bookmarklet) to navigate the pages works fine (ie: start safari, go to url, do login, restart safari, go back to url). I find that that the cookies that were active when the bookmarklet was created are persistent but any cookies set during the session when safari is accessed through the bookmarklet are not persistent. I'm wondering if this is a safari/iphone issue and/or if there is any way around this. Many thanks for any insight you can provide.

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• Storing a digital signature for bookings on a web based system

  - by Duncan

  I have a web based bookings system built for a UK higher education client to allow students to sign out equipment (laptops, camera's etc). It's been in use successfully for a couple of years, in the current workflow equipment is collected and the booking is printed, signed by the student and kept until the equipment is returned. They are emailed a pdf copy of the booking and reminders if equipment is outstanding. Students can login and prebook equipment using their university LDAP credentials, the booking is then authorised by staff for later collection, but can also walk in and have equipment booked out by staff. They would like to remove the signed paper part of the process and replace this with some sort of digital signature. The suggestion was a graphics tablet but with a web based system this would require a local software package and in my view be impractical. My thought is that students would enter their LDAP username and password upon collection of the equipment, verifying their identity and effectively digitally signing the booking. My question is what would be best to store as a signature or whether to simply authenticate the user and use a boolean flag to indicate that this has been done could be deemed sufficient?

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• Mocking WebResponse's from a WebRequest

  - by Rob Cooper

  I have finally started messing around with creating some apps that work with RESTful web interfaces, however, I am concerned that I am hammering their servers every time I hit F5 to run a series of tests.. Basically, I need to get a series of web responses so I can test I am parsing the varying responses correctly, rather than hit their servers every time, I thought I could do this once, save the XML and then work locally. However, I don't see how I can "mock" a WebResponse, since (AFAIK) they can only be instantiated by WebRequest.GetResponse How do you guys go about mocking this sort of thing? Do you? I just really don't like the fact I am hammering their servers :S I dont want to change the code too much, but I expect there is a elegant way of doing this.. Update Following Accept Will's answer was the slap in the face I needed, I knew I was missing a fundamental point! Create an Interface that will return a proxy object which represents the XML. Implement the interface twice, on that uses WebRequest, the other that returns static "responses". The interface implmentation then either instantiates the return type based on the response, or the static XML. You can then pass the required class when testing or at production to the service layer. Once I have the code knocked up, I'll paste some samples. Thanks Will :)

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• 'System.Web.UI.Control.Controls' is a 'property' but is used like a 'type'

  - by senzacionale

  What i am doing wrong? I extend LinkButton and i get this error Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0118: 'System.Web.UI.Control.Controls' is a 'property' but is used like a 'type' Source Error: Line 1084: Line 1085: public void @_DataBinding_control30(object sender, System.EventArgs e) { Line 1086: ConfirmButton.Controls.ConfirmLinkButton dataBindingExpressionBuilderTarget; Line 1087: System.Web.UI.IDataItemContainer Container; Line 1088: dataBindingExpressionBuilderTarget = ((ConfirmButton.Controls.ConfirmLinkButton)(sender)); This is C# code: [Localizable(true)] public string Message { get { return ViewState["Message"] as string; } set { ViewState["Message"] = value; } } #region Overriden protected override void OnPreRender(EventArgs e) { if (!String.IsNullOrEmpty(Message)) { WebControlUtils.SetConfirmationMessage(Page, typeof (Page), this, Message, Page.IsAsyncPostBack(), CausesValidation); } base.OnPreRender(e); } #endregion ASPX CODE: <asp:TemplateField> <ItemTemplate> <asp:ConfirmLinkButton ID="lnkBtnDelete" runat="server" Text="Odstrani" Message="Delete?" CommandName="DeleteAgencie" Width="50" CommandArgument='<%# Eval("idAgencies") %>' OnCommand="lnkBtnDelete_Command" CausesValidation="False"></asp:ConfirmLinkButton> </ItemTemplate> </asp:TemplateField> Regards

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• Disable Return key outside textareas on a Asp.Net web page (containing ajax code)

  - by Achim

  Hi, I have an Asp.Net web page, having the common Asp.Net form. The outer "border" of the page (i.e. main menu, header, ...) is build using normal Asp.Net code using a master page. The content of that page uses jQuery to display dynamic forms and to send data to the server. If I push the return key on that page, I jump to a (more or less) random page - which is not what the user expects. ;-) There are some text areas and the user must be able to enter line breaks. Otherwise it would be fine to disable the return key completely. Any bullet proof way to do that? I found some solutions on the web, which capture the keypress event and ignore \x13, but that does not really work. It works as long as the page has just loaded, but as soon as I have clicked on some elements, the return key behaves as usuall. Any hint would be really appreciated! Achim

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• Generic wrapper for System.Web.Caching.Cache functions

  - by David Neale

  I've created a generic wrapper for using the Cache object: public class Cache<T> where T : class { public Cache Cache {get;set;} public CachedKeys Key {get;set;} public Cache(Cache cache, CachedKeys key){ Cache = cache; Key = key; } public void AddToCache(T obj){ Cache.Add(Key.ToString(), obj, null, DateTime.Now.AddMinutes(5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null); } public bool TryGetFromCache(out T cachedData) { cachedData = Cache[Key.ToString()] as T; return cachedData != null; } public void RemoveFromCache() { Cache.Remove(Key.ToString()); } } The CachedKeys enumeration is just a list of keys that can be used to cache data. The trouble is, to call it is quite convuluted: var cache = new Cache<MyObject>(Page.Cache, CachedKeys.MyKey); MyObject myObject = null; if(!cache.TryGetFromCache(out myObject)){ //get data... cache.AddToCache(data); //add to cache return data; } return myObject; I only store one instance of each of my objects in the cache. Therefore, is there any way that I can create an extension method that accepts the type of object to Cache and uses (via Reflection) its Name as the cache key? public static Cache<T> GetCache(this Cache cache, Type cacheType){ Cache<cacheType> Cache = new Cache<cacheType>(cache, cacheType.Name); } Of course, there's two errors here: Extension methods must be defined in a non-generic static class The type or namespace name 'cacheType' could not be found This is clearly not the right approach but I thought I'd show my working. Could somebody guide me in the right direction?

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• OCS presence in SharePoint AJAX-based web part

  - by Maksym Ozerov

  I'm currently implementing AJAX-based web part which displays search result. This search result has user names and opposite to each name I'm rendering the OCS presence indicator. This indicator works fine in IE6 but I can't get it to work in IE7/8. Basically the problem in IE7/8 is that OCS is rendered but when you mouse over it nothing is shown. If you try to scroll page down then mouse over the OCS icon you will see the OCS actions menu in the bottom of the page instead of seeing it on the opposite to the user name. My AJAX-based web part uses jQuery post method to make a request to the server and receives json which is then rendered to the div. My HTML for the user name looks like this: <nobr> <span> <a target='_blank' href='/ViewExpert.aspx?uid=4'>Some Expert</a> <img height='1' width='3' border='0' alt='' src='/_layouts/images/blank.gif'><a class='ms-imnlink' onclick='IMNImageOnClick();return false;' href='javascript:'> <img height='12' width='12' border='0' id='3' ShowOfflinePawn='1' type='smtp' sip='[email protected]' src='/_layouts/images/blank.gif' valign='middle' name='imnmark' alt='No presence information' title=''> </a> </span> </nobr> After the HTML above is rendered on the page I call the following two lines of code: //have to reset this value, otherwise ProcessImn() fails after next AJAX request imnCount = 0; ProcessImn(); Any ideas why it doesn't work in IE7/8?

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• IIS error hosting WCF Data Service on shared web host

  - by jkohlhepp

  My client has a website hosted on a shared web server. I don't have access to IIS. I am trying to deploy a WCF Data Service onto his site. I am getting this error: IIS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used. I have searched SO and other sites quite a bit but can't seem to find someone with my exact situation. I cannot change the IIS settings because this is a third party's server and it is a shared web server. So my only option is to change things in code or in the service config. My service config looks like this: <system.serviceModel xdt:Transform="Insert"> <serviceHostingEnvironment> <baseAddressPrefixFilters> <add prefix="http://www.somewebsite.com"/> </baseAddressPrefixFilters> </serviceHostingEnvironment> <bindings> <webHttpBinding> <binding name="{Binding Name}" > <security mode="None" /> </binding> </webHttpBinding> </bindings> <services> <service name="{Namespace to Service}"> <endpoint address="" binding="webHttpBinding" bindingConfiguration="{Binding Name}" contract="System.Data.Services.IRequestHandler"> </endpoint> </service> </services> </system.serviceModel> As you can see I tried to set the security mode to "None" but that didn't seem to help. What should I change to resolve this error?

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• scripsharp reference web service / strongly type to results model

  - by user175528

  With scriptsharp (script#) is it possible to get strong typing when calling a service defined in my web app? The only way I can see is to: 1 - use linked / shared files to shadow copy my results classes / domain models across into my script# lib 2 - replicate my model across in the script# lib and use automapper to validate? 3 - use some .tt to code gen? also, even if I can do this, how do I get around the auto camel-casing script# does, when my service result (asmx) wont do this? (so my JSON response will comback as UserMessage, script# will have changed that to userMessage) basically, what I am looking to use script# to achieve is better compile time support against our domain model when calling and processing services in javascript, so something like this: Scriptlet public static class MyScriptlet { public static void Main() { MyService.Service1("hello", ProcessResponse);} public static void ProcessResponse(MyService.Service1ResponseData resp) { jQuery.Select('#Message').Text(resp.UserMessage); jQuery.Select('#Detail').Text(resp.UserDetail); } Service (in our web app) public class MyService { public class Service1ResponseData { public string UserMessage {get;set;} public string UserDetail {get;set;} } public Service1ResponseData Service1(string user) { return new Service1ResponseData() { UserMessage:"hi",UserDetail:"some text"}; } }

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• ASP.Net application timeout

  - by ClarkeyBoy

  Hi, I have an application I have just deployed which, for complicated reasons, stores all the data from the database in a module the first time any data from the specific table is required (i.e. when a customer requests to view a product for the first time, all the product data is stored in the ProductManager class (of which an instance is stored in a shared property of the SiteContent class, making the ProductManager easily accessible from any page). Now forget that you are probably now glaring at me for using this approach.. I am sure it has its inefficiencies but I have only been studying .Net for a year or so now so I am still learning. One thing I have noticed is that I can go on the site once, then revisit it 5 minutes later and it will load all the data into the ProductManager class again. It seems this is a .Net application timeout thing - since the session timeout is set to 30 minutes and, when I am logged in on the administration frontend, it logs me out after 5 minutes (ish). Does anyone have any idea how to change this? Is there any way I can change this in the code without having to contact the hosting company? If not in the code is there any way to change this in the web.config? Thanks in advance. Regards, Richard

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• ASP.NET Content Web Form - content from placeholder disappears

  - by Naeem Sarfraz

  I'm attempting to set a class on the body tag in my asp.net site which uses a master page and content web forms. I simply want to be able to do this by adding a bodycssclass property (see below) to the content web form page directive. It works through the solution below but when i attempt to view Default.aspx the Content1 control loses its content. Any ideas why? Here is how I'm doing it. I have a master page with the following content: <%@ Master Language="C#" ... %> <html><head>...</head> <body id=ctlBody runat=server> <asp:ContentPlaceHolder ID="cphMain" runat="server" /> </body> </html> it's code behind looks like: public partial class Site : MasterPageBase { public override string BodyCssClass { get { return ctlBody.Attributes["class"]; } set { ctlBody.Attributes["class"] = value; } } } it inherits from: public abstract class MasterPageBase : MasterPage { public abstract string BodyCssClass { get; set; } } my default.aspx is defined as: <%@ Page Title="..." [master page definition etc..] bodycssclass="home" %> <asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server"> Some content </asp:Content> the code behind for this file looks like: public partial class Default : PageBase { ... } and it inherits from : public class PageBase : Page { public string BodyCssClass { get { MasterPageBase mpbCurrent = this.Master as MasterPageBase; return mpbCurrent.BodyCssClass; } set { MasterPageBase mpbCurrent = this.Master as MasterPageBase; mpbCurrent.BodyCssClass = value; } } }

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• Simulate Windows Service with ASP.NET

  - by Bayonian

  Hi, I have small web app that generate PDF files as a report. I'm trying to delete those generated PDF files after 10 sec that they are generated. What I want to do is to read a folder with PDF files every 10 sec, and delete all the PDF files inside that folder. I read this post of Easy Background Tasks in ASP.NET. The following code is the VB version. Protected Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs) AddTask("DoStuff", 10) End Sub Private Sub AddTask(ByVal name As String, ByVal seconds As Integer) OnCacheRemove = New CacheItemRemovedCallback(CacheItemRemoved) HttpRuntime.Cache.Insert(name, seconds, Nothing, DateTime.Now.AddSeconds(seconds), Cache.NoSlidingExpiration, CacheItemPriority.NotRemovable, _ OnCacheRemove) End Sub Public Sub CacheItemRemoved(ByVal k As String, ByVal v As Object, ByVal r As CacheItemRemovedReason) ' do stuff here if it matches our taskname, like WebRequest DeletePDFilesInFoler() ' re-add our task so it recurs AddTask(k, Convert.ToInt32(v)) End Sub But I got this error Delegate 'System.Web.Caching.CacheItemRemovedCallback' requires an 'AddressOf' expression or lambda expression as the only argument to its constructor. If this code works, where I should put it. Right, now I'm putting it in the master page. How to get this error out? Thank you

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• Selecting a Java framework for large application w/ only ONE user

  - by Bijan

  I am building a large application that will be hosted on an AWS server. I'm trying to select a web framework for assisting me with code organization, template design, and generally presentation aspects. Here are some points of consideration: Require security/login/user authentication. I may add the ability in the future to allow more than just an administrator to access the web app, but it is not a public facing website. AJAX support would be helpful. There are a couple widgets that I don't want to recreate. One is a tree object, where the user can expand/contract items in the list, can create new branches, add/edit objects. This would be better off in some dynamic view rather than all done in ugly html. Generally, this is just to provide the application with a face for control, management, and monitoring. Having an easier time adding buttons, CSS, AJAX widgets are great additions though, but not the primary purpose. I'm considering: Wicket Spring Seam GWT Stripe and the list goes on, as I'm sure you all know. I originally planned on using GWT, but then started to feel that GWT didn't cover my primary needs. I could be wrong about this, but there seems to be a lot of support for GWT AND Wicket/Spring. All of this 'getting lost in java frameworks' got me thinking outside the java realm for a framework that would suit my needs that was a clear option, like: JRuby/Rails Jython/Django Groovy/Grails Guice (just throwing this in there... I don't clearly understand the main purposes of all these frameworks. It doesn't seem like DInjection is something I need for a single purpose application) Thanks as always. This community makes Googling for esoteric programming information an order of magnitude better.

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• Time to start returning IQueryable<T> instead of IList<T> to my Web UI / Web API Layer?

  - by JohnnyO

  I've got a multi-layer application that starts with the repository pattern for all data access and it returns IQueryable to the Services layer. The Services layer, which includes all of the business logic, returns IList to the Controllers (note: I'm using ASP.NET MVC for the UI layer). The benefit of returning IQueryable in the data access layer is that it allows my repositories to be extremely simple and the database queries to be deferred. However, I'm triggering the database queries in my services layer so that my unit tests is more reliable and I don't give flexibility to the Controllers to reshape my queries. However, I've recently encountered several situations where deferring the execution of queries down to the Controllers would have been significantly more performant because the Controllers had to do some projections on the data that was UI specific. Additionally, with the emergence of things like oData, I was starting to wonder if end points (e.g. web UI or web apis) should be working directly with IQueryable. What are your thoughts? Is it time to start returning IQueryable from the services layer to the UI layer? Or stick with IList? This thread here: http://stackoverflow.com/questions/718624/to-return-iqueryablet-or-not-return-iqueryablet seems to vouch for returning IList to the UI layers, but I was wondering if things are changing because of new emerging technologies and techniques.

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• Programmatically copying custom content type and columns from one web to another

  - by BeraCim

  Hi all: I'm experiencing a very stubborn problem when copying custom content type and its columns from one web to another within the same site. Basically, this is the code that I have: foreach (SPField field in existingWeb.Fields) { if (!destinationWeb.Fields.ContainsField(field.Title)) { destinationWeb.Fields.AddFieldAsXml(field.SchemaXml); destinationWeb.Update(); } } foreach (SPContentType existingWebCt in destinationWeb.ContentType) { SPContentType newContentType = new SPContentType(existingWebCt.Parent, destinationWeb.ContentTypes, existingWebCt.Name); foreach (SPFieldLink fieldLink in existingWebCt.FieldLinks) { SPField sourceField = existingWebCt.Fields[fieldLink.Id]; if (destinationWeb.Fields.ContainsField(sourceField.Title)) { SPFieldLink destinationWebFieldLink = new SPFieldLink(destinationWeb.Fields[sourceField.Title]); newContentType.FieldLinks.Add(destinationWebFieldLink); } } } existingWeb and destinationWeb are 2 webs within the same site. The code runs fine. But the problem is that in the SITE Content Type screen (under site settings), when I click the custom column link in the custom content type, I got an error saying: Invalid field name {UID}. The UID is the same UID as the custom column in the existing site. I checked with my web settings after completion. I can see the custom list (which I created with an item for testing purpose), but the custom column is gone from the view (though the actual data is still there... just have to check the box to get it to display). But I think that is less important... more of fyi. I've also gotten a variety of different exceptions should I copy things wrongly. Google has failed to help me out on this one. Does anyone know what I'm missing in order to get that link to work again? Thanks.

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• Accessing Item Fields via Sitecore Web Service

  - by Catch

  I am creating items on the fly via Sitecore Web Service. So far I can create the items from this function: AddFromTemplate And I also tried this link: http://blog.hansmelis.be/2012/05/29/sitecore-web-service-pitfalls/ But I am finding it hard to access the fields. So far here is my code: public void CreateItemInSitecore(string getDayGuid, Oracle.DataAccess.Client.OracleDataReader reader) { if (getDayGuid != null) { var sitecoreService = new EverBankCMS.VisualSitecoreService(); var addItem = sitecoreService.AddFromTemplate(getDayGuid, templateIdRTT, "Testing", database, myCred); var getChildren = sitecoreService.GetChildren(getDayGuid, database, myCred); for (int i = 0; i < getChildren.ChildNodes.Count; i++) { if (getChildren.ChildNodes[i].InnerText.ToString() == "Testing") { var getItem = sitecoreService.GetItemFields(getChildren.ChildNodes[i].Attributes[0].Value, "en", "1", true, database, myCred); string p = getChildren.ChildNodes[i].Attributes[0].Value; } } } } So as you can see I am creating an Item and I want to access the Fields for that item. I thought that GetItemFields will give me some value, but finding it hard to get it. Any clue?

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• Unknown Exception on trying to initialize the web service stub created by Axis C++

  - by Harsha Reddy

  Hi, I am trying out the sample calculator program given in the folder of axis c++. I am mainly interested in the client side. So I used the wsdl to create the stubs and my main is pretty much the same as given in the sample. However on executing the call Calculator ws (endpoint) I get an unknown exception "First-chance exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000. First-chance exception at 0x7c812afb in CalculatorClient.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.. Unhandled exception at 0x7c0024b9 in CalculatorClient.exe: 0xC0000005: Access violation reading location 0x00000000." and the exception causing code is Calculator::Calculator(const char* pchEndpointUri, AXIS_PROTOCOL_TYPE eProtocol) :Stub(pchEndpointUri, eProtocol) { } I had earlier tried to run a a webservice using Axis C++ but had received the same error. At that time my web service was a java ws on WAS. Then I later tried the calculator client (but this time I did not have any server hosting the ws as I just wanted to check if the Client could initialize). Is the problem caused due to the web service not being hosted on Apache in C++ (though I highly doubt it). Any help would be appreciated. Thanks, Harsha

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• Issue with IHttpHandler and relative URLs

  - by vtortola

  Hi, I've developed a IHttpHandler class and I've configured it as verb="*" path="*", so I'm handling all the request with it in an attempt of create my own REST implementation for a test web site that generates the html dynamically. So, when a request for a .css file arrives, I've to do something like context.Response.WriteFile(Server.MapPath(url)) ... same for pictures and so on, I have to response everything myself. My main issue, is when I put relative URLs in the anchors; for example, I have main page with a link like this <a href="page1">Go to Page 1</a> , and in Page 1 I have another link <a href="page2">Go to Page 2</a>. Page 1 and 2 are supposed to be at the same level (http://host/page1 and http://host/page2, but when I click in Go to Page 2, I got this url in the handler: ~/page1/~/page2 ... what is a pain, because I have to do an url = url.SubString(url.LastIndexOf('~')) for clean it, although I feel that there is nothing wrong and this behavior is totally normal. Right now, I can cope with it, but I think that in the future this is gonna bring me some headache. I've tried to set all the links with absolute URLs using the information of context.Request.Url, but it's also a pain :D, so I'd like to know if there is a nicer way to do these kind of things. Don't hesitate in giving me pretty obvious responses because I'm pretty new in web development and probably I'm skipping something basic about URLs, Http and so on. Thanks in advance and kind regards.

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• Rendering PDF on WebPage

  - by Priyank

  Hi. We are trying to load a pdf file in web browser using pdfobject javascript api. Currently the size of the pdf's that we are trying to display is close to 10MBs. This creates a long delay in displaying a PDF on web page; while the complete PDF gets downloaded. We need to remove this lag by achieving either of the alternatives: Show a progress bar until the PDF is actually displayed. We couldn't find an event which is triggered and can be used to find out if pdf is visible now. This lacking doesn't let us decide when to stop showing progress bar/spinner OR lazy load the PDF such that it gets displayed as soon as first page gets loaded. With that ateast user will have a visual indication as to something is happening. We couldn'find anything in pdf object that lets us do a lazy load. User alternative pdf rendering api; this is a low priority as we already have complete code in place; but in an event of first 2 alternatives not being met; we'd have to consider this option. So please feel free to suggest. Any other ideas as to how user interaction can be made more intuitive or pleasant; would be welcome. Cheers

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