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  • Npgsql pass parameters by name to a stored function

    - by Jeff
    I'm working with code I'm converting to Pgsql working with .NET. I want to call a stored function that has several parameters, but I'd like to bind the parameters by name, like so: NpgsqlCommand command = new NpgsqlCommand("\"StoredFunction\"", _Connection) command.CommandType = CommandType.StoredProcedure; command.Parameters.Add("param2", value2); command.PArameters.Add("param1", value1); Attempts to do this so far look for a function with parameter types matching in the order in which I added the parameters to the collection, not by name. Is it possible for Npgsql to bind parameters to stored functions by name?

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  • Regex to leave desired string remaining and others removed

    - by m7d
    In Ruby, what regex will strip out all but a desired string if present in the containing string? I know about /[^abc]/ for characters, but what about strings? Say I have the string "group=4&type_ids[]=2&type_ids[]=7&saved=1" and want to retain the pattern group=\d, if it is present in the string using only a regex? Currently, I am splitting on & and then doing a select with matching condition =~ /group=\d/ on the resulting enumerable collection. It works fine, but I'd like to know the regex to do this more directly.

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  • Error loading a persisted workflow

    - by fra
    Hi, I have a workflow started and persisted using messaging activities. The correlation between the Start initial command and the Stop final command works well if they're sent within few seconds. Problems begin when the workflow is unloaded, because the following Stop message throws the following FaultException: If LoadWorkflowByInstanceKeyCommand.AssociateLookupKeyToInstanceId is not specified, the LookupInstanceKey must already be associated to an instance, or the LoadWorkflowByInstanceKeyCommand will fail. For this reason, it is invalid to also specify the LookupInstanceKey in the InstanceKeysToAssociate collection if AssociateLookupKeyToInstanceId isn't set Can anybody help me? The variables inside the workflow are of types int and XDocument. Any help appreciated, thank you

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  • multiple key ranges as parameters to a couchdb view

    - by kolosy
    is there a way to send multiple startKey/endKey pairs to a view, akin to the keys: [] array that can be posted for keys? the underlying problem - let's say my documents have "categories" and timestamps. if i want all documents in the "foo" category that have a timestamp that's within the last two hours, it's simple: function (doc) { emit([doc.category, doc.timestamp], null); } and then query as GET server:5894/.../myview?startKey=[foo, |now - 2 hours|]&endkey=[foo, |now|] the problem comes when i want something in categories foo or bar, within the last two hours. if i didn't care about time, i could just pull directly by key through the keys collection. unfortunately, i have no such option with ranges. what i ended up doing in the meantime is rounding the timestamp to two-hour blocks, and then multiplexing the query out: POST server:5894/.../myview keys=[[foo, 0 hours], [foo, 2 hours], [bar, 0 hours], [bar, 2 hours]] it works, but will get messy if i want to go back a large amount of time (in relationship to the blocksize)

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  • ItemsControl.ItemsSource MVVM performance

    - by bitbonk
    I have an (non-virtualized) ItemsControl that binds its ItemsSource to a ObeservableCollection of ViewModel instances. Now once the large amount Model instances is loaded all the ViewModel complemnents needs to be added to that ObservableCollection. How can I add a large amount of ViewModels without making the UI Thread hang? I suppose the UI Thread hangs because each time a new item is added the ItemsControl needs to update itself and does layout etc. over and over again. Should I suspend the binding add all items and then resume? If so, how? Should I override the ObservableCollection to implement an AddRange so only 1 CollectionChanged Event is fired for adding multiple items? Or alternatively just replace the whole collection? Or is it better to add each items separately and call Dispatcher.Invoke for each item separately? So I would unblock frequently. How do you handle large dynamic lists that can not be virtualized?

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  • What is the equivalent of OnRender in Silverlight?

    - by John Weldon
    I'm working on porting an app from WPF to Silverlight. The app uses custom types derived from FrameworkElement (in WPF) to describe shapes, and text to be rendered on a Canvas. The WPF app root node overrides OnRender() to iterate through a collection of 'child' nodes, calling Render on each child node to build the Visual Tree. Silverlight doesn't expose OnRender, but there are hints that the same effect can be achieved using ControlTemplate. Is this the way to go, and are there any good examples of using this method available? I've done some googling (binging?) and found nothing really conclusive.

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  • How can I Diff a Svn Repository using SharpSvn

    - by AngeDeLaMort
    Hello, My question is quite simple and with the SharpSvn Api, it should be easy as well. Here what I did: path = "c:\project"; using (SvnLookClient client = new SvnLookClient()) { SvnLookOrigin o = new SvnLookOrigin(path); Collection<SvnChangedEventArgs> changeList; client.GetChanged(o, out changeList); // <-- Exception } and when I call the GetChanged, I get an exception: Can't open file 'c:\project\format': The system cannot find the file specified. So, Maybe there is something I'm missing? Or maybe it's not the right way to do find out the list of files and folders that were modified in the local repository? Thanks in advance.

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  • How can a separator be added between items in an ItemsControl

    - by Grandpappy
    I'm needing to display a list of numbers from a collection in an Items Control. So the items are: "1", "2", "3". When they are rendered, I need them separated by a comma (or something similar). So the above 3 items would look like this: "1, 2, 3". How can I add a separator to the individual items, without having one tacked on the end of the list? I am not stuck on using an ItemsControl, but that's what I had started to use.

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  • C# How can I tell if an IEnumerable is Mutable?

    - by Logan
    I want a method to update certain entries of an IEnumerable. I found that doing a foreach over the entries and updating the values failed as in the background I was cloning the collection. This was because my IEnumerable was backed by some LINQ-SQL queries. By changing the method to take a List I have changed this behavior, Lists are always mutable and hence the method changes the actual objects in the list. Rather than demand a List is passed is there a Mutable interface I can use? // Will not behave as consistently for all IEnumerables public void UpdateYesterday (IEnumerable<Job> jobs) { foreach (var job : jobs) { if (job.date == Yesterday) { job.done = true; } } }

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  • WPF DataGrid : CanContentScroll property causing odd behavior

    - by Sonic Soul
    i have a solution where i generate a DataGrid (or multiple instances) based on user criteria.. each grid keeps receiving data as it comes in via ObservableCollection the problem i had, was that the scroll acted weird. It was choppy, and scrollbar would resize it self while scrolling. than i found.. CanContentScroll property! It completely fixes the weird scrolling behavior bringing me temporary bliss and happiness. however, it causes 2 unfortunate side effects. whenever i re-create grid instances and bind them to my observable collection, it freezes my entire window for 5 seconds. when my grid grows to a big size, this delay can last for 30 seconds. when i call TradeGrid.ScrollIntoView(TradeGrid.Items(TradeGrid.Items.Count - 1)) to scroll to the bottom, it jumps to bottom and than back to the top. is there another way to achieve smooth scrolling perhaps?

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  • Does the EntityDataSource support "it.Property.Property" syntax?

    - by Orion Adrian
    I have an EntityDataSource where I'm trying to replace some previous code-behind work. My EntityDataSource looks like: <asp:EntityDataSource runat="server" ID="personDataSource" ContextTypeName="Model.GuidesEntities" EntitySetName="CharacterFavorites" OrderBy="it.Person.FullName" Select="it.Person.Id" Where="it.UserName = @userName" /> When when I actually use it I get the error: 'Person' is not a member of type 'Transient.rowtype[(Id,Edm.Int32(Nullable=True,DefaultValue=))]' in the currently loaded schemas. Does the EntityDataSource not support walking the relationships? How would you do this with the EntityDataSource? Also the @userName parameter is being added in the code behind for now. Extra points for anyone who knows how to specify a username parameter directly in the WhereParameters collection.

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  • vs2010 Linq to SQL -- adding an entity from my DBML

    - by Matt
    I think I may be going crazy here... Anyways, I have a DBML with a table 'User' in it. Pretty simple stuff -- From within a class, I have the following: BusinessDataContext businessDataContext = new BusinessDataContext(); var user = new User(); user.FirstName = FirstName; user.LastName = LastName; user.MiddleInitial = MiddleInitial; user.DateCreated = DateTime.UtcNow; /* There's no businessDataContext.User.Add method -- There's a bunch of generic collection methods with the <> symbols (Aggregate, All, Any...) Am I just too tired and missing something basic or did something simple change with vs 2010? */ businessDataContext.SubmitChanges(); I think I really just need sleep. :-)

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  • WPF Binding Failure performance hit vs Exception

    - by Aran Mulholland
    when we bind to heterogeneous collection of objects, not all objects have the same set of properties. in the output window we get a message like: System.Windows.Data Error: 39 : BindingExpression path error: 'RoundingFactor' property not found on 'object' ''MultiLineTextMarkingScheme' (HashCode=7262386)'. BindingExpression:Path=RoundingFactor;.......... This doesn't appear to be an exception, but we are concerned it has a performance impact. Should we be concerned and create a view model that has all the properties we wish to bind to (and have the properties that dont exist on the underlying element return null) or can we just leave it. This situation often occurs in a grid scenario where there might be large numbers of these binding failures.

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  • MVC 1.0 FormCollection wiped out by running SSRS report

    - by Dale
    I have an MVC 1.0 app with a form that works just fine. The app also launches an SSRS using the URL ReportServer interface (**Not the Webform ReportViewer Control!). This also works just fine. But if I export the generated SSRS report (say to .pdf), and then return to the MVC application, no form will work. By "not work" I mean that on the Post action, the form collection is not returned. I'm completely lost as to what could be causing this behavior. Any ideas? Thanks in advance.

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  • ASP.NET MVC DropDownList Validation

    - by Andrew Florko
    Hello everybody, I have [DisplayName("Country")] public List<SelectListItem> Countries { get; set; } property in Model class for DropDownList. When I try to check if the ModelState.IsValid on form postback it's always false & error for Countries tells "Can't convert [value] to SelectListItem" or some of a kind. I figured out there is no straight-forward mapping for drop down selected value (looks like I'll have to read value from Form value collection), but how can I ignore binding and validation for List property? I just want to make ModelState.IsValid attribute to be true if all the other fields are populated properly. Thank you in advance

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  • DataGridView Selected Row Move UP and DOWN

    - by Silly Rabbit
    How can I allow selected rows in a DataGridView (DGV) to be moved up or down. I have done this before with a ListView. Unfortunetly, for me, replacing the DGV is not an option (curses). By the way, the DGV datasource is a Generic Collection. The DGV has two buttons on the side, yes, UP & Down. Can anyone help point me in the right direction. I do have the code that I used for the ListView if it'll help (it did not help me).

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  • Anyone had any experience with *.pcap manipulation libs?

    - by zxcvbnm
    I'm using the SharpPcap + PacketDotNet libraries to process some .pcap files and came across a bug in the way the timestamps are calculated. Take this Timeval property, which is something along these lines: PosixTimeval Timeval { DateTime Date; ulong Seconds; ulong MicroSeconds; } The problem is as follows: Suppose you have a trace open in Wireshark with one of the packets with a timestamp of "0.002". Once you open it within one of your programs, it retrieves the packet and its Timeval is setup such that Seconds = 0 and MicroSeconds = 002 = 2. This is done under the hood, so there is no way to avoid it as far as I can tell. My question is if that problem is common to other libraries (and maybe all of them?) who manipulate the pcap file format, which I think are built around the same collection of c/c++ functions, or if this is a problem only with the ones I'm using.

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  • nhibernate activerecord linq Contains problem

    - by Robert Ivanc
    Hi, I am having problems with the following query in Castle ActiveRecord 2.12: var q = from o in SodisceFMClientVAR.Queryable where taxnos2.Contains(o.TaxFileNo) select o; taxNos2 is an array of strings. When run I get an exception: + InnerException {"Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index"} System.Exception {System.ArgumentOutOfRangeException} StackTrace " at Castle.ActiveRecord.ActiveRecordBase.ExecuteQuery(IActiveRecordQuery query)\r\n at Castle.ActiveRecord.Linq.LinqResultWrapper`1.Populate()\r\n at Castle.ActiveRecord.Linq.LinqResultWrapper`1.GetEnumerator()\r\n at NHibernate.Linq.Query`1.GetEnumerator()\r\n at System.Linq.Buffer`1..ctor(IEnumerable`1 source)\r\n at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)\r\n at prosoft.skb.insolventnostDataAccess.InsolventnostDataAccAR.GetOurUsersListLS(ICollection`1 taxNos) in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataAccess\\InsolventnostDataAR.cs:line 214\r\n at prosoft.skb.insolventnostDataFromWS.InsolventnostFromWS.filterByOurUsers(IEnumerable`1 odprtiPostopki) in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataFromWS\\InsolventnostFromWS.cs:line 237\r\n at prosoft.skb.insolventnostDataFromWS.InsolventnostFromWS.SyncData() in C:\\svn\\skb\\insolventnostWithAR\\prosoft.skb.insolventnostDataFromWS\\InsolventnostFromWS.cs:line 53" string Does Contains even work in linq for nhibernate? I couldn't find anything via google... Is there a workaround? Thanks!

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  • Is it correct to say that an ASP .NET MVC application is an HTTPModule?

    - by stormwild
    I just wanted to clarify my understanding of ASP .NET MVC (current version is 4). I was reading this article on How does ASP.NET MVC work? So, how does ASP.NET know how to route requests to MVC? The answer lies in web.config. There is a new http module added to modules collection in ASP.NET MVC projects So basically an mvc application is implemented as an HTTPModule or at least the url routing portion of an mvc app? Would it be possible for one to create and register a custom routing module and then possibly create their own micro mvc framework like Sinatra in Ruby or Slim in PHP?

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  • Composite WPF and AvalonDock

    - by Vishal
    Hi All, Has anybody tried PRISM and AvalonDock (latest release with DocumentSource property) together? I already had a look at http://www.youdev.net/post/2009/07/17/AvalonDock-Documents.aspx but it just briefs on how to use documentsource property. Please help, if anybody has tried this. I Would like to know 1.How to associate DocumentSource Property with different regions? 2.Can we assign only a collection of DocumentContent to DocumentSource property? What about DockableContent? Thanks & regards, Vishal.

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  • Run powershell commands in C#

    - by Ramnik
    RunspaceConfiguration psConfig = RunspaceConfiguration.Create(); Runspace psRunspace = RunspaceFactory.CreateRunspace(psConfig); psRunspace.Open(); using (Pipeline psPipeline = psRunspace.CreatePipeline()) { // Define the command to be executed in this pipeline Command command = new Command("Add-spsolution"); // Add a parameter to this command command.Parameters.Add("literalpath", @"c:\project3.wsp"); // Add this command to the pipeline psPipeline.Commands.Add(command); // Invoke the cmdlet try { Collection<PSObject> results = psPipeline.Invoke(); Label1.Text = "hi"+results.ToString(); // Process the results } catch (Exception exception) { Label1.Text = exception.ToString();// Process the exception here } } It is throwing the exception: System.Management.Automation.CommandNotFoundException: The term 'add-spsolution' is not recognized as the name of a cmdlet, function, script file, or operable program. Any suggestions why?

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  • Need themes for the WPF Toolkit controls (espeically DataGrid)

    - by DanM
    I just downloaded the nice themes collection from the Codeplex WPF Themes site. I like the WhisterBlue and BureauBlue themes a lot, but neither contain any styles for the new controls included in the WPF Toolkit (DataGrid, DatePicker, and Calendar). It seems like someone out there must have extended the themes to cover these controls, but I've had no luck finding them. So, if you have any leads, I'd love to hear them. I should also mention that I've been trying to port a Silverlight version of the BureauBlue DataGrid theme to WPF (see: http://stackoverflow.com/questions/1611135/how-do-you-port-a-theme-from-silverlight-to-wpf), but that has been quite unsuccessful so far.

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  • Silverlight DataGrid set cell IsReadOnly programatically

    - by Brandon Montgomery
    I am binding a data grid to a collection of Task objects. A particular column needs some special rules pertaining to editing: <!--Percent Complete--> <data:DataGridTextColumn Header="%" ElementStyle="{StaticResource RightAlignStyle}" Binding="{Binding PercentComplete, Mode=TwoWay, Converter={StaticResource PercentConverter}}" /> What I want to do is set the IsReadOnly property only for each task's percent complete cell based on a property on the actual Task object. I've tried this: <!--Percent Complete--> <data:DataGridTextColumn Header="%" ElementStyle="{StaticResource RightAlignStyle}" Binding="{Binding PercentComplete, Mode=TwoWay, Converter={StaticResource PercentConverter}}" IsReadOnly={Binding IsNotLocalID} /> but apparently you can't bind to the IsReadOnly property on a data grid column. What is the best way do to do what I am trying to do?

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  • Java: ArrayList bottleneck

    - by Jack
    Hello, while profiling a java application that calculates hierarchical clustering of thousands of elements I realized that ArrayList.get occupies like half of the CPU needed in the clusterization part of the execution. The algorithm searches the two more similar elements (so it is O(n*(n+1)/2) ), here's the pseudo code: int currentMax = 0.0f for (int i = 0 to n) for (int j = i to n) get content i-th and j-th if their similarity > currentMax update currentMax merge the two clusters So effectively there are a lot of ArrayList.get involved. Is there a faster way? I though that since ArrayList should be a linear array of references it should be the quickest way and maybe I can't do anything since there are simple too many gets.. but maybe I'm wrong. I don't think using a HashMap could work since I need to get them all on every iteration and map.values() should be backed by an ArrayList anyway.. Otherwise should I try other collection libraries that are more optimized? Like google's one, or apache one.. Thanks

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  • UIScrollView subviews not showing at first

    - by igul222
    I created a custom UIScrollView subclass that works a like a UITableView, keeping a collection of subviews and re-using them whenever the user scrolls. It's implemented like this: -(void)layoutSubviews { for(UIView *subview in [self subviews]) [subview removeFromSuperview]; // then re-add subviews after changing the frame and some attributes } This works fine with simple UIViews, but when I try to do it with a UIView that has a UILabel subview, the "base" view appears fine, but the UILabel doesn't show up at all. I can get the UILabel to show up by scrolling the entire UIView off screen and then bringing it back on. What could be causing this? So far, I've tried calling [myUIView setNeedsLayout], [myUIView setNeedsDisplay], and [myUIView layoutIfNeeded] from various places. None of them worked, and the last one crashed my app. I've also done the same thing to myUIScrollViewSubclass, with similar results.

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