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  • WPF - LayoutUpdated event firing repeatedly

    - by Drew Noakes
    I've been adding a bit of animation to my WPF application. Thanks to Dan Crevier's unique solution to animating the children of a panel combined with the awesome WPF Penner animations it turned out to be fairly straightforward to make one of my controls look great and have its children move about with some nice animation. Unfortunately this all comes with a performance overhead. I'm happy to have the performance hit when items are added/removed or the control is resized, but it seems that this perf hit occurs consistently throughout the application's lifetime, even when items are completely static. The PanelLayoutAnimator class uses an attached property to hook the UIElement.LayoutUpdated.aspx) event. When this event fires, render transforms are animated to cause the children to glide to their new positions. Unfortunately it seems that the LayoutUpdated event fires every second or so, even when nothing is happening in the application (at least I don't think my code's doing anything -- the app doesn't have focus and the mouse is steady.) As the reason for the event is not immediately apparent to the event handler, all children of the control have to be reevaluated. This event is being called about once a second when idle. The frequency increases when actually using the app. So my question is, how can I improve the performance here? Any answer that assists would be appreciated, but I'm currently stuck on these sub-questions: What causes the LayoutUpdated event to fire so frequently? Is this supposed to happen, and if not, how can I find out why it's firing and curtail it? Is there a more convenient way within the handler to know whether something has happened that might have moved children? If so, I could bail out early and avoid the overhead of looping each child. For now I will work around this issue by disabling animation when there are more than N children in the panel.

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  • Silverlight data binding to parent user control's properties with using MVVM in both controls

    - by MagicMax
    Hello! I have two UserControls ("UserControlParentView" and "UserControlChildView") with MVVM pattern implemented in both controls. Parent control is a container for Child control and child control's property should be updated by data binding from Parent control in order to show/hide some check box inside Child control. Parent Control Description UserControlParentViewModel has property: private bool isShowCheckbox = false; public bool IsShowCheckbox { get { return isShowCheckbox; } set { isShowCheckbox = value; NotifyPropertyChanged("IsShowCheckbox"); } } UserControlParentViewModel - how I set DataContext of Parent control: public UserControlParentView() { InitializeComponent(); this.DataContext = new UserControlParentViewModel(); } UserControlParentView contains toggle button (in XAML), bound to UserControlParentViewModel's property IsShowCheckbox <ToggleButton Grid.Column="1" IsChecked="{Binding IsShowCheckbox, Mode=TwoWay}"></ToggleButton> Also Parent control contains instance of child element (somewhere in XAML) <local:UserControlChildView IsCheckBoxVisible="{Binding IsShowCheckbox}" ></local:UserControlChildView> so property in child control should be updated when user togggle/untoggle button. Child control contains Boolean property to be updated from parent control, but nothing happened! Breakpoint never fired! Property in UserControlChildView that should be updated from Parent control (here I plan to make chechBox visible/hidden in code behind): public bool IsCheckBoxVisible { get { return (bool)GetValue(IsCheckBoxVisibleProperty); } set { SetValue(IsCheckBoxVisibleProperty, value); } } // Using a DependencyProperty as the backing store for IsCheckBoxVisible. This enables animation, styling, binding, etc... public static readonly DependencyProperty IsCheckBoxVisibleProperty = DependencyProperty.Register("IsCheckBoxVisible", typeof(bool), typeof(TopMenuButton), new PropertyMetadata(false)); So the question is - what I'm doing wrong? Why child's property is never updated? BTW - there is no any binding error warnings in Output window...

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  • LinkBuilder.BuildUrlFromExpression not working anymore in .Net 4 / VS 2010 ?

    - by Mose
    Hi, I recently migrating my ASP.Net MVC 1 application from VS.Net 2008 / C# 3.5 to VS.NET 2010 / C# 4.0. I massively used a builder to get URL strings from the strongly typed calls. It looks like this : // sample call : string toSamplePage = Url.To<SampleController>(c => c.Page(parameter1, parameter2)); the code is added as an extension to the default UrlHelper : public static string To<Tcontroller>(UrlHelper helper, Expression<Action<Tcontroller>> action) where Tcontroller : Controller { // based on Microsoft.Web.Mvc.dll LinkBuilder return LinkBuilder.BuildUrlFromExpression<Tcontroller>(helper.RequestContext, helper.RouteCollection, action); } The only problem of this, is the reference to Microsoft.Web.Mvc dll, but the gain in readability was worth it. Problem : it does not work anymore, return (null) whatever the parameters. Questions : is there a better way now to build links from an expression ? (yes I tried to google it without success) is there a trick to have the former LinkBuilder.BuildUrlFromExpression works ? I tried to recompile it into C# 4.0, but the problem is that it implies working on my own compilated version of System.Web.Mvc which is not an option. I'm currently trying to migrate to MVC 2 but I still have issues... Waiting for your suggestions...

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  • A call to PInvoke function '[...]' has unbalanced the stack

    - by Sanctus2099
    Hey I'm getting this weird error on some stuff I've been using for quite a while. It may be a new thing in Visual Studio 2010 but I'm not sure. I'm trying to call a unamanged function written in C++ from C#. From what I've read on the internet and the error message itself it's got something to do with the fact that the signature in my C# file is not the same as the one from C++ but I really can't see it. First of all this is my unamanged function below: TEngine GCreateEngine(int width,int height,int depth,int deviceType); And here is my function in C#: [DllImport("Engine.dll", EntryPoint = "GCreateEngine", CallingConvention = CallingConvention.StdCall)] public static extern IntPtr CreateEngine(int width,int height,int depth,int device); When I debug into C++ I see all arguments just fine so thus I can only think it's got something to do with transforming from TEngine (which is a pointer to a class named CEngine) to IntPtr. I've used this before in VS2008 with no problem. I hope my problem is clear enough for you guys to understand.

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  • fatal error C1034: windows.h: no include path set

    - by nathan
    OS Windows Vista Ultimate trying to run a program called minimal.c when i type at command line C:\Users\nathan\Desktopcl minimal.c Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for 80x86 Copyright (C) Microsoft Corporation. All rights reserved. minimal.c minimal.c(5) : fatal error C1034: windows.h: no include path set i have set all the paths: C:\Users\nathan\Desktoppath PATH=C:\Program Files (x86)\Microsoft Visual Studio 8\VC\bin;C:\Windows\system3 ;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\ATI Technologies\AT .ACE\Core-Static;C:\Program Files\Intel\DMIX;c:\Program Files (x86)\Microsoft S L Server\100\Tools\Binn\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Bi n\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files (x86)\Java\jdk1. .0_13\bin;C:\Program Files (x86)\Autodesk\Backburner\;C:\Program Files (x86)\Co mon Files\Autodesk Shared\;C:\Program Files (x86)\Microsoft DirectX SDK (March 009)\Include;C:\Users\nathan\Desktop\glut-3.7.6-bin\glut-3.7.6-bin;C:\Program F les (x86)\Microsoft Visual Studio 8\Common7\IDE;C:\Program Files (x86)\Microsof Visual Studio 8\VC\PlatformSDK\Include;C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\Include\gl i have gone and made sure windows.h is in the directory im setting the path too. its in C:\Program Files (x86)\Microsoft Visual Studio 8\VC\PlatformSDK\Include. i have visual studio 2005 i have exhausted all possiblies any ideas

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  • How to retrieve value from DropDownListFor html helper in ASP>NET MVC2?

    - by Eedoh
    Hello I know there was few similar questions here about DropDownListFor, but neither helped me... I use Entity Framework as ORM in my project. There's EF model called "Stete". Stete has Foreign on EF model called "Drustva" Now I'm trying to make a form for editing the data, for Stete model. I managed to display everything, including Stete.Drustva.Naziv property, but I can't get this last property in my handler method [HttpPost]. It always return 0, no matter what I select in drop down list. Here's the code: DrustvaController: public static IEnumerable<SelectListItem> DrustvaToSelectListItemsById(this KnjigaStetnikaEntities pEntities, int Id) { IEnumerable<Drustva> drustva = (from d in pEntities.Drustva select d).ToList(); return drustva.OrderBy(drustvo => drustvo.Naziv).Select(drustvo => new SelectListItem { Text = drustvo.Naziv, Value = drustvo.Id.ToString(), Selected = (drustvo.Id == Id)? true : false }); } SteteController: private IEnumerable<SelectListItem> privremenaListaDrustava(int Id) { using (var ctx = new KnjigaStetnikaEntities()) { return ctx.DrustvaToSelectListItemsById(Id); } } public ActionResult IzmijeniPodatkeStete(Int32 pBrojStete) { PretragaStetaModel psm = new PretragaStetaModel(); ViewData["drustva"] = privremenaListaDrustava(psm.VratiStetuPoBrojuStete(pBrojStete).Drustva.Id); ViewData.Model = new Models.Stete(); return View("EditView", (Stete.Models.Stete)psm.GetSteta(pBrojStete)); } EditView: <div class="editor-label"> <%: Html.Label("Društvo") %> </div> <div class="editor-field"> <%: Html.DropDownListFor(m => m.Drustva.Naziv, ViewData["drustva"] as IEnumerable<SelectListItem>) %> <%: Html.ValidationMessageFor(model => model.FKDrustvo) %> </div> I am sorry for not translating names of the objects into english, but they hardly have appropriate translation. If necessary, I can try creating similar example...

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  • Problem with TimeZoneInfo.ConvertTime: missed the Daylight Saving switch.

    - by SirMoreno
    My web app runs on .Net 3.5, all of the dates are saved on the DB in UTC time (not in user time). When I want to display a date I convert it to user date (from UTC) //Get the current datetime of the user exp: GMT TO ISRAEL +2 public static DateTime GetUserDateTime(DateTime dateUTC) { string userTzId = "Israel Standard Time"; TimeZoneInfo userTZ = TimeZoneInfo.FindSystemTimeZoneById(userTzId); dateUTC = DateTime.SpecifyKind(dateUTC, DateTimeKind.Utc); DateTime ret = TimeZoneInfo.ConvertTime(dateUTC, TimeZoneInfo.Utc, userTZ); return ret; } Until now it worked fine but I have users from Israel (GMT +2), and Israel switched to Daylight saving time on 26/3/10 so now it's (GMT +3). For some reason the TimeZoneInfo.ConvertTime don't know the Daylight saving time switch is on 26/3/10 so it still converts to GMT +2. The strange thing is that on localhost it works fine, I set up a test page: DateTime userdate = GetUserDateTime(DateTime.UtcNow); string str2 = "UserDateTime = " + userdate.ToString("dd/MM/yy") + " " + userdate.ToString("HH:mm"); On the Server (windows 2003 set to UTC time) it shows the wrong time (+2): UserDateTime = 27/03/10 21:38 On localhost (windows XP set to Israel Time) it shows the correct time (+3): UserDateTime = 27/03/10 22:38 How can I update the TimeZoneInfo that the Daylight saving time switch in Israel was on the 26/3/10? Thanks.

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  • SignalR - No connection could be made because the target machine actively refused it?

    - by user2151460
    Trying to create a Console application that is going to send data to a website. The website is built with Codeiginter framework, if that matters. When i'm running my Console application, i get the error that a connection could not be made, and that the machine refused it. Been watching some tutorials, but most of them are using Hubs etc, which imo i do not need for this simple task?. All i want to do is to send data to the website, one way. Here is my Console application using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using Microsoft.AspNet.SignalR; using Microsoft.AspNet.SignalR.Client; namespace signalrDemo { class Program { static void Main(string[] args) { var connection = new Connection("http://localhost:3000/servers/2"); connection.Received += data => Console.WriteLine(data); connection.Start().ContinueWith(task => { if (task.IsFaulted) { Console.WriteLine("Failed to start: {0}", task.Exception.GetBaseException()); } else { Console.WriteLine("Success! Connected with client connection id {0}", connection.ConnectionId); } }); Console.ReadLine(); } } } And at my website, i have this code $(function () { var connection = $.connection('http://localhost/servers/2'); connection.received(function (data) { $("message").append(data + '<br />'); }); connection.start().done(); }); Thank you.

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  • CA2000 and disposal of WCF client

    - by Mayo
    There is plenty of information out there concerning WCF clients and the fact that you cannot simply rely on a using statement to dispose of the client. This is because the Close method can throw an exception (i.e. if the server hosting the service doesn't respond). I've done my best to implement something that adheres to the numerous suggestions out there. public void DoSomething() { MyServiceClient client = new MyServiceClient(); // from service reference try { client.DoSomething(); } finally { client.CloseProxy(); } } public static void CloseProxy(this ICommunicationObject proxy) { if (proxy == null) return; try { if (proxy.State != CommunicationState.Closed && proxy.State != CommunicationState.Faulted) { proxy.Close(); } else { proxy.Abort(); } } catch (CommunicationException) { proxy.Abort(); } catch (TimeoutException) { proxy.Abort(); } catch { proxy.Abort(); throw; } } This appears to be working as intended. However, when I run Code Analysis in Visual Studio 2010 I still get a CA2000 warning. CA2000 : Microsoft.Reliability : In method 'DoSomething()', call System.IDisposable.Dispose on object 'client' before all references to it are out of scope. Is there something I can do to my code to get rid of the warning or should I use SuppressMessage to hide this warning once I am comfortable that I am doing everything possible to be sure the client is disposed of? Related resources that I've found: http://www.theroks.com/2011/03/04/wcf-dispose-problem-with-using-statement/ http://www.codeproject.com/Articles/151755/Correct-WCF-Client-Proxy-Closing.aspx http://codeguru.earthweb.com/csharp/.net/net_general/tipstricks/article.php/c15941/

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  • Programmatically Set a QueryStringFilterWebPart / ExcelWebRenderer Connection

    - by user355972
    Code: public static void ChartPageConnector(SPWeb web, string pageURL, string providerWpId, string consumerWpId, string mappedName) { SPFile file = web.Files[pageURL]; SPLimitedWebPartManager mgr = file.GetLimitedWebPartManager(PersonalizationScope.Shared); TransformableFilterValuesToFilterValuesTransformer transformer = new TransformableFilterValuesToFilterValuesTransformer(); transformer.MappedConsumerParameterName = mappedName; //QueryStringFilterWebPart provider = (QueryStringFilterWebPart)mgr.WebParts[providerWpId]; //ExcelWebRenderer consumer = (ExcelWebRenderer)mgr.WebParts[consumerWpId]; JWP.WebPart provider = mgr.WebParts[providerWpId]; JWP.WebPart consumer = mgr.WebParts[consumerWpId]; ProviderConnectionPoint pcp = null; foreach (ProviderConnectionPoint ppoint in mgr.GetProviderConnectionPoints(provider)) { if (ppoint.InterfaceType == typeof(Microsoft.SharePoint.WebPartPages.ITransformableFilterValues)) { pcp = ppoint; break; } } ConsumerConnectionPoint ccp = null; foreach (ConsumerConnectionPoint cpoint in mgr.GetConsumerConnectionPoints(consumer)) { if (cpoint.InterfaceType == typeof(IFilterValues)) { ccp = cpoint; break; } } //mgr.SPConnectWebParts(provider, pcp, consumer, ccp); mgr.SPConnectWebParts(provider, pcp, consumer, ccp, transformer); file.Update(); web.Update(); } Error: The connection point "IFilterValues" on "g_33d68e82_6478_4629_a079_5a7e02ac4695" is disabled. Any Ideas Why?

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  • Windows Sharepoint Services - FullTextSqlQuery Document library Unable to find items created by SYST

    - by Ashok
    We have created an ASP.NET web app that upload files to WSS Doc Libary. The files get added under 'SYSTEM ACCOUNT' in the library. The FullTextSqlQuery class is used to search the document libary items. But it only searches files that has been uploaded by a windows user account like 'Administrator' and ignores the ones uploaded by 'SYSTEM ACCOUNT'. As a result the search results are empty even though we have the necessary data in the document library. What could be the reason for this? The code is given below: public static List GetListItemsFromFTSQuery(string searchText) { string docLibUrl = "http://localhost:6666/Articles%20Library/Forms/AllItems.aspx"; List items = new List(); DataTable retResults = new DataTable(); SPSecurity.RunWithElevatedPrivileges(delegate { using (SPSite site = new SPSite(docLibUrl)) { SPWeb CRsite = site.OpenWeb(); SPList ContRep = CRsite.GetListFromUrl(docLibUrl); FullTextSqlQuery fts = new FullTextSqlQuery(site); fts.QueryText = "SELECT Title,ContentType,Path FROM portal..scope() WHERE freetext('" + searchText + "') AND (CONTAINS(Path,'\"" + ContRep.RootFolder.ServerRelativeUrl + "\"'))"; fts.ResultTypes = ResultType.RelevantResults; fts.RowLimit = 300; if (SPSecurity.AuthenticationMode != System.Web.Configuration.AuthenticationMode.Windows) fts.AuthenticationType = QueryAuthenticationType.PluggableAuthenticatedQuery; else fts.AuthenticationType = QueryAuthenticationType.NtAuthenticatedQuery; ResultTableCollection rtc = fts.Execute(); if (rtc.Count > 0) { using ( ResultTable relevantResults = rtc[ResultType.RelevantResults]) retResults.Load(relevantResults, LoadOption.OverwriteChanges); foreach (DataRow row in retResults.Rows) { if (!row["Path"].ToString().EndsWith(".aspx")) //if (row["ContentType"].ToString() == "Item") { using ( SPSite lookupSite = new SPSite(row["Path"].ToString())) { using (SPWeb web = lookupSite.OpenWeb()) { SPFile file = web.GetFile(row["Path"].ToString()); items.Add(file.Item); } } } } } } //using ends here }); return items; }

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  • Do SEO-friendly URLs really affect a page's ranking?

    - by Lee Harold
    SEO-friendly URLs are all the rage these days. But do they actually have a meaningful impact on a page's ranking in Google and other search engines? If so, why? If not, why not? (Note that I would absolutely agree that SEO-friendly URLs are nicer to use for human beings. My question is whether they actually make a difference to the ranking algorithms.) Update: As it turns out, the Google post that endorphine points to here has caused tremendous confusion in the SEO community. For a sampling of the discussion, see here, here, and here. Part of the problem is that the Google post is addressing the worst case where URL rewriting is done poorly and so you'd be better off sticking with a dynamic URL rather than a mangled static "SEO-friendly" URL. There's no question dynamic URLs can be crawled by Google and can achieve high rankings. Maybe it would be easier to reframe the question more concretely: given 2 otherwise equivalent pages, which will rank higher for the search "do seo friendly urls really affect page ranking"? A) http://stackoverflow.com/questions/505793/do-seo-friendly-urls-really-affect-a-pages-ranking or B) http://stackoverflow.com?question=505793 (a fake URL for comparison only)

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  • Slow NFS and GFS2 performance

    - by Tiago
    Recently I've designed and configured a 4 node cluster for a webapp that does lots of file handling. The cluster have been broken down into 2 main roles, webserver and storage. Each role is replicated to a second server using drbd in active/passive mode. The webserver does a NFS mount of the data directory of the storage server and the latter also has a webserver running to serve files to browser clients. In the storage servers I've created a GFS2 FS to hold the data which is wired to drbd. I've chose GFS2 mainly because the announced performance and also because the volume size which has to be pretty high. Since we entered production I've been facing two problems that I think are deeply connected. First of all, the NFS mount on the webservers keeps hanging for a minute or so and then resumes normal operations. By analyzing the logs I've found out that NFS stops answering for a while and outputs the following log lines: Oct 15 18:15:42 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:44 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:46 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:47 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:48 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:48 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:51 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:52 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:52 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:55 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:55 <server hostname> kernel: nfs: server active.storage.vlan not responding, still trying Oct 15 18:15:58 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK Oct 15 18:15:59 <server hostname> kernel: nfs: server active.storage.vlan OK In this case, the hang lasted for 16 seconds but sometimes it takes 1 or 2 minutes to resume normal operations. My first guess was this was happening due to heavy load of the NFS mount and that by increasing RPCNFSDCOUNT to a higher value, this would become stable. I've increased it several times and apparently, after a while, the logs started appearing less times. The value is now on 32. After further investigating the issue, I've came across a different hang, despite the NFS messages still appear in the logs. Sometimes, the GFS2 FS simply hangs which causes both the NFS and the storage webserver to serve files. Both stay hang for a while and then they resume normal operations. This hangs leaves no trace on client side (also leaves no NFS ... not responding messages) and, on the storage side, the log system appears to be empty, even though the rsyslogd is running. The nodes connect themselves through a 10Gbps non-dedicated connection but I don't think this is an issue because the GFS2 hang is confirmed but connecting directly to the active storage server. I've been trying to solve this for a while now and I've tried different NFS configuration options, before I've found out the GFS2 FS is also hanging. The NFS mount is exported as such: /srv/data/ <ip_address>(rw,async,no_root_squash,no_all_squash,fsid=25) And the NFS client mounts with: mount -o "async,hard,intr,wsize=8192,rsize=8192" active.storage.vlan:/srv/data /srv/data After some tests, these were the configurations that yielded more performance to the cluster. I am desperate to find a solution for this as the cluster is already in production mode and I need to fix this so that this hangs won't happen in the future and I don't really know for sure what and how I should be benchmarking. What I can tell is that this is happening due to heavy loads as I have tested the cluster earlier and this problems weren't happening at all. Please tell me if you need me to provide configuration details of the cluster, and which do you want me to post. As last resort I can migrate the files to a different FS but I need some solid pointers on whether this will solve this problems as the volume size is extremely large at this point. The servers are being hosted by a third-party enterprise and I don't have physical access to them. Best regards. EDIT 1: The servers are physical servers and their specs are: Webservers: Intel Bi Xeon E5606 2x4 2.13GHz 24GB DDR3 Intel SSD 320 2 x 120GB Raid 1 Storage: Intel i5 3550 3.3GHz 16GB DDR3 12 x 2TB SATA Initially there was a VRack setup between the servers but we've upgraded one of the storage servers to have more RAM and it wasn't inside the VRack. They connect through a shared 10Gbps connection between them. Please note that it is the same connection that is used for public access. They use a single IP (using IP Failover) to connect between them and to allow for a graceful failover. NFS is therefore over a public connection and not under any private network (it was before the upgrade, were the problem still existed). The firewall was configured and tested thoroughly but I disabled it for a while to see if the problem still occurred, and it did. From my knowledge the hosting provider isn't blocking or limiting the connection between either the servers and the public domain (at least under a given bandwidth consumption threshold that hasn't been reached yet). Hope this helps figuring out the problem. EDIT 2: Relevant software versions: CentOS 2.6.32-279.9.1.el6.x86_64 nfs-utils-1.2.3-26.el6.x86_64 nfs-utils-lib-1.1.5-4.el6.x86_64 gfs2-utils-3.0.12.1-32.el6_3.1.x86_64 kmod-drbd84-8.4.2-1.el6_3.elrepo.x86_64 drbd84-utils-8.4.2-1.el6.elrepo.x86_64 DRBD configuration on storage servers: #/etc/drbd.d/storage.res resource storage { protocol C; on <server1 fqdn> { device /dev/drbd0; disk /dev/vg_storage/LV_replicated; address <server1 ip>:7788; meta-disk internal; } on <server2 fqdn> { device /dev/drbd0; disk /dev/vg_storage/LV_replicated; address <server2 ip>:7788; meta-disk internal; } } NFS Configuration in storage servers: #/etc/sysconfig/nfs RPCNFSDCOUNT=32 STATD_PORT=10002 STATD_OUTGOING_PORT=10003 MOUNTD_PORT=10004 RQUOTAD_PORT=10005 LOCKD_UDPPORT=30001 LOCKD_TCPPORT=30001 (can there be any conflict in using the same port for both LOCKD_UDPPORT and LOCKD_TCPPORT?) GFS2 configuration: # gfs2_tool gettune <mountpoint> incore_log_blocks = 1024 log_flush_secs = 60 quota_warn_period = 10 quota_quantum = 60 max_readahead = 262144 complain_secs = 10 statfs_slow = 0 quota_simul_sync = 64 statfs_quantum = 30 quota_scale = 1.0000 (1, 1) new_files_jdata = 0 Storage network environment: eth0 Link encap:Ethernet HWaddr <mac address> inet addr:<ip address> Bcast:<bcast address> Mask:<ip mask> inet6 addr: <ip address> Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:957025127 errors:0 dropped:0 overruns:0 frame:0 TX packets:1473338731 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2630984979622 (2.3 TiB) TX bytes:1648430431523 (1.4 TiB) eth0:0 Link encap:Ethernet HWaddr <mac address> inet addr:<ip failover address> Bcast:<bcast address> Mask:<ip mask> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 The IP addresses are statically assigned with the given network configurations: DEVICE="eth0" BOOTPROTO="static" HWADDR=<mac address> ONBOOT="yes" TYPE="Ethernet" IPADDR=<ip address> NETMASK=<net mask> and DEVICE="eth0:0" BOOTPROTO="static" HWADDR=<mac address> IPADDR=<ip failover> NETMASK=<net mask> ONBOOT="yes" BROADCAST=<bcast address> Hosts file to allow for a graceful NFS failover in conjunction with NFS option fsid=25 set on both storage servers: #/etc/hosts <storage ip failover address> active.storage.vlan <webserver ip failover address> active.service.vlan As you can see, packet errors are down to 0. I've also ran ping for a long time without any packet loss. MTU size is the normal 1500. As there is no VLan by now, this is the MTU used to communicate between servers. The webservers' network environment is similar. One thing I forgot to mention is that the storage servers handle ~200GB of new files each day through the NFS connection, which is a key point for me to think this is some kind of heavy load problem with either NFS or GFS2. If you need further configuration details please tell me. EDIT 3: Earlier today we had a major filesystem crash on the storage server. I couldn't get the details of the crash right away because the server stop responding. After the reboot, I noticed the filesystem was extremely slow, and I was not being able to serve a single file through either NFS or httpd, perhaps due to cache warming or so. Nevertheless, I've been monitoring the server closely and the following error came up in dmesg. The source of the problem is clearly GFS, which is waiting for a lock and ends up starving after a while. INFO: task nfsd:3029 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. nfsd D 0000000000000000 0 3029 2 0x00000080 ffff8803814f79e0 0000000000000046 0000000000000000 ffffffff8109213f ffff880434c5e148 ffff880624508d88 ffff8803814f7960 ffffffffa037253f ffff8803815c1098 ffff8803814f7fd8 000000000000fb88 ffff8803815c1098 Call Trace: [<ffffffff8109213f>] ? wake_up_bit+0x2f/0x40 [<ffffffffa037253f>] ? gfs2_holder_wake+0x1f/0x30 [gfs2] [<ffffffff814ff42e>] __mutex_lock_slowpath+0x13e/0x180 [<ffffffff814ff2cb>] mutex_lock+0x2b/0x50 [<ffffffffa0379f21>] gfs2_log_reserve+0x51/0x190 [gfs2] [<ffffffffa0390da2>] gfs2_trans_begin+0x112/0x1d0 [gfs2] [<ffffffffa0369b05>] ? gfs2_dir_check+0x35/0xe0 [gfs2] [<ffffffffa0377943>] gfs2_createi+0x1a3/0xaa0 [gfs2] [<ffffffff8121aab1>] ? avc_has_perm+0x71/0x90 [<ffffffffa0383d1e>] gfs2_create+0x7e/0x1a0 [gfs2] [<ffffffffa037783f>] ? gfs2_createi+0x9f/0xaa0 [gfs2] [<ffffffff81188cf4>] vfs_create+0xb4/0xe0 [<ffffffffa04217d6>] nfsd_create_v3+0x366/0x4c0 [nfsd] [<ffffffffa0429703>] nfsd3_proc_create+0x123/0x1b0 [nfsd] [<ffffffffa041a43e>] nfsd_dispatch+0xfe/0x240 [nfsd] [<ffffffffa025a5d4>] svc_process_common+0x344/0x640 [sunrpc] [<ffffffff810602a0>] ? default_wake_function+0x0/0x20 [<ffffffffa025ac10>] svc_process+0x110/0x160 [sunrpc] [<ffffffffa041ab62>] nfsd+0xc2/0x160 [nfsd] [<ffffffffa041aaa0>] ? nfsd+0x0/0x160 [nfsd] [<ffffffff81091de6>] kthread+0x96/0xa0 [<ffffffff8100c14a>] child_rip+0xa/0x20 [<ffffffff81091d50>] ? kthread+0x0/0xa0 [<ffffffff8100c140>] ? child_rip+0x0/0x20

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  • Programming Java 7 in Eclipse

    - by reprogrammer
    I installed JDK 7 and Eclipse 3.6M6. Then, I added JRE 7 as a new JRE execution environment in Eclipse, and set the compiler compliance level to Java 7. I can compile the following piece of code through command line using the javac that comes with JDK 7. import java.util.HashMap; import java.util.Map; public class Try { public static void main(String[] args) { Map<Integer, String> map = new HashMap<>(); } } But, Eclipse gives the following error messages. Incorrect number of arguments for type HashMap; it cannot be parameterized with arguments Try.java /TryJava7/src line 7 Java Problem Syntax error on token "<", ? expected after this token Try.java /TryJava7/src line 7 Java Problem Even though I've set the compliance level of the compiler to Java 7, it looks like Eclipse doesn't understand Java7 syntax yet. Is it possible to play with Java 7 in Eclipse? The following is the content of .classpath. <?xml version="1.0" encoding="UTF-8"?> <classpath> <classpathentry kind="src" path="src"/> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/> <classpathentry kind="output" path="bin"/> </classpath> And, the following is the content of .settings/org.eclipse.jdt.core.prefs. eclipse.preferences.version=1 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve org.eclipse.jdt.core.compiler.compliance=1.7 org.eclipse.jdt.core.compiler.debug.lineNumber=generate org.eclipse.jdt.core.compiler.debug.localVariable=generate org.eclipse.jdt.core.compiler.debug.sourceFile=generate org.eclipse.jdt.core.compiler.problem.assertIdentifier=error org.eclipse.jdt.core.compiler.problem.enumIdentifier=error org.eclipse.jdt.core.compiler.source=1.7

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  • DynamicResource and Dynamic Items in ContextMenu on XamDataGrid

    - by miguel
    I would like to dynamically create a set of context menu options based upon some properties. Currently, I am creating a context menu as a DynamicResource with the visibility of the menu options bound to the properties, however, it seems that the DynamicResource is created only once, at runtime. Is this true? What I would like to do is have the menu generated each time, which will take into account the property changes on the data object. Please see the following XAML snippet: <Border DockPanel.Dock="Right" Margin="4,4,4,4" BorderBrush="Gray" BorderThickness="1" CornerRadius="3" > <igDP:XamDataGrid Height="Auto" Width="Auto" Style="{DynamicResource DefaultInfragisticsGridStyle}" Name="axeDataGrid" ActiveRecord="{Binding Path=SelectedItem, Mode=TwoWay}" DataSource="{Binding Path=Axes}" ContextMenuOpening="ContextMenuOpeningHandler"> <igDP:XamDataGrid.Resources> <Style TargetType="{x:Type igDP:DataRecordPresenter}" BasedOn="{x:Static Themes:DataPresenterAero.DataRecordPresenter}"/> <ContextMenu x:Key="RecordContextMenu"> <ContextMenu.Resources> <BooleanToVisibilityConverter x:Key="booleanToVisibilityConverter"/> </ContextMenu.Resources> <MenuItem Header="Cancel Axe" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.CancelAxe}" Visibility="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.IsCancelAxeAllowed, Converter={StaticResource booleanToVisibilityConverter}, Mode=OneWay}"/> <MenuItem Header="Create RFQ" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.CreateRFQ}" Visibility="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.IsCreateRfqAllowed, Converter={StaticResource booleanToVisibilityConverter}, Mode=OneWay}"/> </ContextMenu> <Style TargetType="{x:Type igDP:DataRecordCellArea}"> <Setter Property="ContextMenu" Value="{DynamicResource RecordContextMenu}" /> </Style>

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  • Java: immutable Stack?

    - by HH
    I chose to use Stacks and Tables before knowing Collections has immutable empty things only for Set, Map and List. Because the size of table does not change after its init: Integer[] table = new Intger[0] I can use the zero-witdh table as an empty table. But I cannot use final or empty Stack to get immutable Stack: No immutability to Stack with Final import java.io.*; import java.util.*; public class TestStack{ public static void main(String[] args) { final Stack<Integer> test = new Stack<Integer>(); Stack<Integer> test2 = new Stack<Integer>(); test.push(37707); test2.push(80437707); //WHY is there not an error to remove an elment // from FINAL stack? System.out.println(test.pop()); System.out.println(test2.pop()); } } Java Api 5 for list interface shows that Stack is an implementing class for list and arraylist, here. The java.coccurrent pkg does not have any immutable Stack data structure. From Stack to some immutable data structure How to get immutable Stack data structure? Can I box it with list? Should I switch my current implementatios from stacks to Lists to get immutable? Which immutable data structure is Very fast with about similar exec time as Stack?

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  • WPF derived ComboBox SelectedValuePath issue

    - by opedog
    In our application we have a very large set of data that acts as our data dictionary for ComboBox lists, etc. This data is staticly cached and keyed off of 2 variables, so I thought it wise to write a control that derived from ComboBox and exposed the 2 keys as DPs. When those 2 keys have proper values I set the ItemsSource of the ComboBox automatically from the data dictionary list it corresponds to. I also automatically set the SelectedValuePath and DisplayMemberPath to Code and Description, respectively. Here's how an example of how an item in the ItemsSource from the data dictionary list always looks: public class DataDictionaryItem { public string Code { get; set; } public string Description { get; set; } public string Code3 { get { return this.Get.Substring(0, 3); } } } The value of Code is always 4 bytes long, but sometimes I only need to bind 3 bytes of it. Hence, the Code3 property. Here's how the code looks inside my custom combobox to set the ItemsSource: private static void SetItemsSource(CustomComboBox combo) { if (string.IsNullOrEmpty(combo.Key1) || string.IsNullOrEmpty(combo.Key2)) { combo.ItemsSource = null; return; } List<DataDictionaryItem> list = GetDataDictionaryList(combo.Key1, combo.Key2); combo.ItemsSource = list; } Now, my problem is, when I change the SelectedValuePath in the XAML to Code3, it doesn't work. What I bind to SelectedValue still gets the full 4 character Code from DataDictionaryItem. I even tried rerunning SetItemsSource when the SelectedValuePath was changed and no dice. Can anyone see what I need to do to get my custom combobox to wake up and use the SelectedValuePath provided if it's overridden in the XAML? Tweaking the value in the property setter in my SelectedValue bound business object is not an option.

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  • UITableView UITableViewCell not reloading on reloadData

    - by David van Dugteren
    This question has been asked a few times now, but there exists no answer on the web that has solved the problem for me yet... See the code: { const NSInteger TOP_LABEL_TAG = 1001; static NSString *CellIdentifier = @"CellIdentifier"; UITableViewCell *cell = [theTableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } getAQuestionToAnswer = [[QuestionsToAnswer sharedInstance] getLatestLoadedQuestion]; UILabel *topLabel; topLabel = [[[UILabel alloc] initWithFrame: CGRectMake ( 50, 18, 260, 75)] autorelease]; [cell.contentView addSubview:topLabel]; topLabel.tag = TOP_LABEL_TAG; topLabel.backgroundColor = [UIColor clearColor]; topLabel.textColor = [UIColor colorWithRed:0.25 green:0.0 blue:0.0 alpha:1.0]; topLabel.highlightedTextColor = [UIColor colorWithRed:1.0 green:1.0 blue:0.9 alpha:1.0]; [topLabel setFont:[UIFont fontWithName:@"MarkerFelt-Thin" size:13]]; topLabel.numberOfLines = 4; topLabel = (UILabel *)[cell viewWithTag:TOP_LABEL_TAG]; topLabel.text = [NSString stringWithFormat:@"%@", [getAQuestionToAnswer valueForKey:@"question"] ]; Some code is omitted but the basics is there, I'm updating by means of a shake gesture, the NSLog confirms that the getAQuestionToAnswer is indeed updated with a new question after the gesture. Yet at run time, no matter what I do... e.g. [self.tableview reloaddata]; nothing works. It just doesn't want to refresh.

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  • Spring security custom ldap authentication provider

    - by wuntee
    I currently have my ldap authentication context set up like this: <ldap-server url="ldap://host/dn" manager-dn="cn=someuser" manager-password="somepass" /> <authentication-manager> <ldap-authentication-provider user-search-filter="(samaccountname={0})"/> </authentication-manager> Now, I need to be able to set up a custom authorities mapper (it uses a different ldap server) - so I am assuming I need to set up my ldap-server similar to (http://static.springsource.org/spring-security/site/docs/2.0.x/reference/ldap.html): <bean id="ldapAuthProvider" class="org.springframework.security.providers.ldap.LdapAuthenticationProvider"> <constructor-arg> <bean class="org.springframework.security.providers.ldap.authenticator.BindAuthenticator"> <constructor-arg ref="contextSource"/> <property name="userDnPatterns"> <list><value>uid={0},ou=people</value></list> </property> </bean> </constructor-arg> <constructor-arg> <bean class="org.springframework.security.ldap.populator.DefaultLdapAuthoritiesPopulator"> <constructor-arg ref="contextSource"/> <constructor-arg value="ou=groups"/> <property name="groupRoleAttribute" value="ou"/> </bean> </constructor-arg> </bean> But, how do I reference that 'ldapAuthProvider' to the ldap-server in the security context? I am also using spring-security 3, so '' does not exist...

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  • WPF 4.0 Custom panel won't show dynamically added controls in VS 2010 Designer

    - by Matt Ruwe
    I have a custom panel control that I'm trying to dynamically add controls within. When I run the application the static and dynamically added controls show up perfectly, but the dynamic controls do not appear within the visual studio designer. Only the controls placed declaratively in the XAML appear. I'm currently adding the dynamic control in the CreateUIElementCollection override, but I've also tried this in the constructor without success. Public Class CustomPanel1 Inherits Panel Public Sub New() End Sub Protected Overrides Function MeasureOverride(ByVal availableSize As System.Windows.Size) As System.Windows.Size Dim returnValue As New Size(0, 0) For Each child As UIElement In Children child.Measure(availableSize) returnValue.Width = Math.Max(returnValue.Width, child.DesiredSize.Width) returnValue.Height = Math.Max(returnValue.Height, child.DesiredSize.Height) Next returnValue.Width = If(Double.IsPositiveInfinity(availableSize.Width), returnValue.Width, availableSize.Width) returnValue.Height = If(Double.IsPositiveInfinity(availableSize.Height), returnValue.Height, availableSize.Height) Return returnValue End Function Protected Overrides Function ArrangeOverride(ByVal finalSize As System.Windows.Size) As System.Windows.Size Dim currentHeight As Integer For Each child As UIElement In Children child.Arrange(New Rect(0, currentHeight, child.DesiredSize.Width, child.DesiredSize.Height)) currentHeight += child.DesiredSize.Height Next Return finalSize End Function Protected Overrides Function CreateUIElementCollection(ByVal logicalParent As System.Windows.FrameworkElement) As System.Windows.Controls.UIElementCollection Dim returnValue As UIElementCollection = MyBase.CreateUIElementCollection(logicalParent) returnValue.Add(New TextBlock With {.Text = "Hello, World!"}) Return returnValue End Function Protected Overrides Sub OnPropertyChanged(ByVal e As System.Windows.DependencyPropertyChangedEventArgs) MyBase.OnPropertyChanged(e) End Sub End Class And my usage of this custom panel <Window x:Class="MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:CustomPanel" Title="MainWindow" Height="364" Width="434"> <local:CustomPanel1> <CheckBox /> <RadioButton /> </local:CustomPanel1> </Window>

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  • JavaMail: Could not connect to SMPT server.

    - by javacode
    Hi The following code causes an error. Please help me understand what's wrong. import javax.mail.*; import javax.mail.internet.*; import java.util.*; public class SendMail { public static void main(String [] args)throws MessagingException { SendMail sm=new SendMail(); sm.postMail(new String[]{"[email protected]"},"hi","hello","[email protected]"); } public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException { boolean debug = false; //Set the host smtp address Properties props = new Properties(); props.put("mail.smtp.host", "webmail.emailmyname.com"); // create some properties and get the default Session Session session = Session.getDefaultInstance(props, null); session.setDebug(debug); // create a message Message msg = new MimeMessage(session); // set the from and to address InternetAddress addressFrom = new InternetAddress(from); msg.setFrom(addressFrom); InternetAddress[] addressTo = new InternetAddress[recipients.length]; for (int i = 0; i < recipients.length; i++) { addressTo[i] = new InternetAddress(recipients[i]); } msg.setRecipients(Message.RecipientType.TO, addressTo); // Optional : You can also set your custom headers in the Email if you Want msg.addHeader("MyHeaderName", "myHeaderValue"); // Setting the Subject and Content Type msg.setSubject(subject); msg.setContent(message, "text/plain"); Transport.send(msg); } } Exception: Exception in thread "main" javax.mail.MessagingException: Could not connect to SMTP host: webmail.emailmyname.com, port: 25, response: 421 at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1694) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:525) at javax.mail.Service.connect(Service.java:291) at javax.mail.Service.connect(Service.java:172) at javax.mail.Service.connect(Service.java:121) at javax.mail.Transport.send0(Transport.java:190) at javax.mail.Transport.send(Transport.java:120) at SendMail.postMail(SendMail.java:45) at SendMail.main(SendMail.java:9)

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  • Hidden Features of C#?

    - by Serhat Özgel
    This came to my mind after I learned the following from this question: where T : struct We, C# developers, all know the basics of C#. I mean declarations, conditionals, loops, operators, etc. Some of us even mastered the stuff like Generics, anonymous types, lambdas, linq, ... But what are the most hidden features or tricks of C# that even C# fans, addicts, experts barely know? Here are the revealed features so far: Keywords yield by Michael Stum var by Michael Stum using() statement by kokos readonly by kokos as by Mike Stone as / is by Ed Swangren as / is (improved) by Rocketpants default by deathofrats global:: by pzycoman using() blocks by AlexCuse volatile by Jakub Šturc extern alias by Jakub Šturc Attributes DefaultValueAttribute by Michael Stum ObsoleteAttribute by DannySmurf DebuggerDisplayAttribute by Stu DebuggerBrowsable and DebuggerStepThrough by bdukes ThreadStaticAttribute by marxidad FlagsAttribute by Martin Clarke ConditionalAttribute by AndrewBurns Syntax ?? operator by kokos number flaggings by Nick Berardi where T:new by Lars Mæhlum implicit generics by Keith one-parameter lambdas by Keith auto properties by Keith namespace aliases by Keith verbatim string literals with @ by Patrick enum values by lfoust @variablenames by marxidad event operators by marxidad format string brackets by Portman property accessor accessibility modifiers by xanadont ternary operator (?:) by JasonS checked and unchecked operators by Binoj Antony implicit and explicit operators by Flory Language Features Nullable types by Brad Barker Currying by Brian Leahy anonymous types by Keith __makeref __reftype __refvalue by Judah Himango object initializers by lomaxx format strings by David in Dakota Extension Methods by marxidad partial methods by Jon Erickson preprocessor directives by John Asbeck DEBUG pre-processor directive by Robert Durgin operator overloading by SefBkn type inferrence by chakrit boolean operators taken to next level by Rob Gough pass value-type variable as interface without boxing by Roman Boiko programmatically determine declared variable type by Roman Boiko Static Constructors by Chris Easier-on-the-eyes / condensed ORM-mapping using LINQ by roosteronacid Visual Studio Features select block of text in editor by Himadri snippets by DannySmurf Framework TransactionScope by KiwiBastard DependantTransaction by KiwiBastard Nullable<T> by IainMH Mutex by Diago System.IO.Path by ageektrapped WeakReference by Juan Manuel Methods and Properties String.IsNullOrEmpty() method by KiwiBastard List.ForEach() method by KiwiBastard BeginInvoke(), EndInvoke() methods by Will Dean Nullable<T>.HasValue and Nullable<T>.Value properties by Rismo GetValueOrDefault method by John Sheehan Tips & Tricks nice method for event handlers by Andreas H.R. Nilsson uppercase comparisons by John access anonymous types without reflection by dp a quick way to lazily instantiate collection properties by Will JavaScript-like anonymous inline-functions by roosteronacid Other netmodules by kokos LINQBridge by Duncan Smart Parallel Extensions by Joel Coehoorn

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  • NHibernate SubclassMap gives DuplicateMappingException

    - by stiank81
    I'm using NHibernate to handle my database - with Fluent configuration. I'm not using Automappings. All mappings are written explicitly, and everything is working just fine. Now I wanted to add my first mapping to a subclass, using the SubclassMap, and I run into problems. With the simplest possible setup an Nhibernate DuplicateMappingException is thrown, saying that the subclass is mapped more than once: NHibernate.MappingException : Could not compile the mapping document: (XmlDocument) ---- NHibernate.DuplicateMappingException : Duplicate class/entity mapping MyNamespace.SubPerson I get this with my simple classes written for testing: public class Person { public int Id { get; set; } public string Name { get; set; } } public class SubPerson : Person { public string Foo { get; set; } } With the following mappings: public class PersonMapping : ClassMap<Person> { public PersonMapping() { Not.LazyLoad(); Id(c => c.Id); Map(c => c.Name); } } public class SubPersonMapping : SubclassMap<SubPerson> { public SubPersonMapping() { Not.LazyLoad(); Map(m => m.Foo); } } Any idea why this is happening? If there were automappings involved I guess it might have been caused by the automappings adding a mapping too, but there should be no automapping. I create my database specifying a fluent mapping: private static ISession CreateSession() { var cfg = Fluently.Configure(). Database(SQLiteConfiguration.Standard.ShowSql().UsingFile("unit_test.db")). Mappings(m => m.FluentMappings.AddFromAssemblyOf<SomeClassInTheAssemblyContainingAllMappings>()); var sessionSource = new SessionSource(cfg.BuildConfiguration().Properties, new TestModel()); var session = sessionSource.CreateSession(); _sessionSource.BuildSchema(session); return session; } Again; note that this only happens with SubclassMap. ClassMap's are working just fine!

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  • How to use custom IComparer for SortedDictionary?

    - by Magnus Johansson
    I am having difficulties to use my custom IComparer for my SortedDictionary<. The goal is to put email addresses in a specific format ([email protected]) as the key, and sort by last name. When I do something like this: public class Program { public static void Main(string[] args) { SortedDictionary<string, string> list = new SortedDictionary<string, string>(new SortEmailComparer()); list.Add("[email protected]", "value1"); list.Add("[email protected]", "value2"); foreach (KeyValuePair<string, string> kvp in list) { Console.WriteLine(kvp.Key); } Console.ReadLine(); } } public class SortEmailComparer : IComparer<string> { public int Compare(string x, string y) { Regex regex = new Regex("\\b\\w*@\\b", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace | RegexOptions.Compiled ); string xLastname = regex.Match(x).ToString().Trim('@'); string yLastname = regex.Match(y).ToString().Trim('@'); return xLastname.CompareTo(yLastname); } } I get this ArgumentException: An entry with the same key already exists. when adding the second item. I haven't worked with a custom IComparer for a SortedDictionary before, and I fail to see my error , what am I doing wrong?

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  • dynamic GridView in CreateChildControls throws a "RegisterRequiresControlState can only be called be

    - by tbischel
    I am trying to add a GridView dynamically to a SharePoint Web Part. Right now, the first time I load the gridview, everything works fine. My gridview has an edit column enabled... so when I click that, it throws an exception when I try and add the gridview control on the postback. The exception: "RegisterRequiresControlState can only be called before and during PreRender" I've tried adding my controls in the CreateChildControls function, the OnInit, OnPageLoad, and OnPreRender... all exhibit the same problem. Does anyone know what might cause this kind of error? Edit: So to test this problem, I created a local GridView in the webpart, recreating all the properties in the one that failed. It actually worked this time through... the only difference that I could identify was that I had made the gridview a static variable in another class, where as here I initiated the gridview as a local variable. I even used the same initializing function for both the original and modified version, same difference. So why would creating a GridView locally affect the ability to add it to a web part?

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