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  • Deserializing a type at the current stream position with protobuf-net

    - by Arne Claassen
    I'm serializing several objects into a single stream, but when i try to read them back, i can't seem to get anything but the last object: ProtoBuf.Serializer.Serialize(stream, postA1); ProtoBuf.Serializer.Serialize(stream, postB2); stream.Position = 0; var postA2 = ProtoBuf.Serializer.Deserialize<Post>(stream); var postB2 = ProtoBuf.Serializer.Deserialize<Post>(stream); The first deserialize moves the stream to the end and postA2 contains the value of postB2, while postB2 is just an uninitialized instance. Is this expected behavior, and if so, how do you deserialize an object from a random position in a stream?

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  • How to send large objects using boost::asio

    - by Max
    Good day. I'm receiving a large objects via the net using boost::asio. And I have a code: for (int i = 1; i <= num_packets; i++) boost::asio::async_read(socket_, boost::asio::buffer(Obj + packet_size * (i - 1), packet_size), boost::bind(...)); Where My_Class * Obj. I'm in doubt if that approach possible (because i have a pointer to an object here)? Or how it would be better to receive this object using packets of fixed size in bytes? Thanks in advance.

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  • Launch Reporting Services Reports from .Net Code

    - by Jeff
    What is the best way to launch reporting services reports from .Net code? One method would be to dynamically build a URL and launch a browser. Something like this: http://server/ReportServer/Pages/ReportViewer.aspx?%2fReport+Directory%2fReport%20Name&FirstParameter=1,2,3&SecondParameter=8/30/2009&rs%3aCommand=Render I don't like how it creates a dependency on the specific URL--especially report parameters which are very likely to change. Is there a better way? The reports I want to link to are in several reporting services projects hosted on one (eventually two) servers.

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  • Fixing up an entity framework query

    - by vdh_ant
    My table structure is as follows: Person 1-M PesonAddress Person 1-M PesonPhone Person 1-M PesonEmail Person 1-M Contract Contract M-M Program Contract M-1 Organization At the end of this query I need a populated object graph where each person has their: PesonAddress's PesonPhone's PesonEmail's PesonPhone's Contract's - and this has its respective Program's Now I had the following query and I thought that it was working great, but it has a couple of problems: from people in ctx.People.Include("PersonAddress") .Include("PersonLandline") .Include("PersonMobile") .Include("PersonEmail") .Include("Contract") .Include("Contract.Program") where people.Contract.Any( contract => (param.OrganizationId == contract.OrganizationId) && contract.Program.Any( contractProgram => (param.ProgramId == contractProgram.ProgramId))) select people; The problem is that it filters the person to the criteria but not the Contracts or the Contract's Programs. It brings back all Contracts that each person has not just the ones that have an OrganizationId of x and the same goes for each of those Contract's Programs respectively. What I want is only the people that have at least one contract with an OrgId of x with and where that contract has a Program with the Id of y... and for the object graph that is returned to have only the contracts that match and programs within that contract that match. I kinda understand why its not working, but I don't know how to change it so it is working... This is my attempt thus far: from people in ctx.People.Include("PersonAddress") .Include("PersonLandline") .Include("PersonMobile") .Include("PersonEmail") .Include("Contract") .Include("Contract.Program") let currentContracts = from contract in people.Contract where (param.OrganizationId == contract.OrganizationId) select contract let currentContractPrograms = from contractProgram in currentContracts let temp = from x in contractProgram.Program where (param.ProgramId == contractProgram.ProgramId) select x where temp.Any() select temp where currentContracts.Any() && currentContractPrograms.Any() select new Person { PersonId = people.PersonId, FirstName = people.FirstName, ..., ...., MiddleName = people.MiddleName, Surname = people.Surname, ..., ...., Gender = people.Gender, DateOfBirth = people.DateOfBirth, ..., ...., Contract = currentContracts, ... }; //This doesn't work But this has several problems (where the Person type is an EF object): I am left to do the mapping by myself, which in this case there is quite a lot to map When ever I try to map a list to a property (i.e. Scholarship = currentScholarships) it says I can't because IEnumerable is trying to be cast to EntityCollection Include doesn't work Hence how do I get this to work. Keeping in mind that I am trying to do this as a compiled query so I think that means anonymous types are out.

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  • ajax response byte size

    - by Alex Pacurar
    Im using jQuery's getJSONP and I want to log the duration of the call and the size of the response to be able to have some statistics about the usage of my application. This is a cross domain ajax call, so I need to use JSONP, but as the JSONP call is not done with an XMLHttpRequest object, the complete callback from jquery's ajax doesnt pass the response content. So my question is how to get the response size (content lenght) from a JSONP call. $.ajaxSetup( { complete:function(x,e) { log(x.responseText.length, x.responseText); } } here x is a XMLHttpRequest object for a JSON call , but for JSONP call is undefined.

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  • Retrieving accessors in IronRuby

    - by rsteckly
    I'm trying to figure out how to retrieve the value stored in the Person class. The problem is just that after I define an instance of the Person class, I don't know how to retrieve it within the IronRuby code because the instance name is in the .NET part. /*class Person attr_accessor :name def initialize(strname) self.name=strname end end*/ //We start the DLR, in this case starting the Ruby version ScriptEngine engine = IronRuby.Ruby.CreateEngine(); ScriptScope scope = engine.ExecuteFile("c:\\Users\\ron\\RubymineProjects\\untitled\\person.rb"); //We get the class type object person = engine.Runtime.Globals.GetVariable("Person"); //We create an instance object marcy = engine.Operations.CreateInstance(person, "marcy");

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  • AVAudioPlayer Memory Leak - Media Player Framework

    - by Krishnan
    Hi Friends, I am using AVAudioPlayer object to play an audio. I create an audioPlayer object initially. I play an animation and when ever animation starts I play the audio and pause the audio when the animation is finished. I initially found three memory Leaks using Instruments. (The responsible caller mentioned was RegisterEmbedCodecs). After suggestion from a "ahmet emrah" in this forum to add MediaPlayer framework, the number of leaks reduced to one. And is there any way to completely get rid of it? Thanks and regards, krishnan.

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  • How do you document anonymous functions ?

    - by clutch
    I'm specifically referring to JavaScript anonymous function but this could be relevant to other languages. I like to use JSDoc notations in my scripts because I know other people will be hacking at it sooner or later. When i have pretty complex anonymous function how do people document it so that it gets picked up by Eclipse and other IDE's that understand JSDoc or JavaDoc notations? /** * Blah Blah blah * * @param Object Blah blah blah * @return Blah Blah Blah * @type Object */ function foo(this) { ...... this.bar = function () { ... complex code .....}; ...... return obj; } Thanks

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  • Rendering a view to a string in ASP.NET MVC 2

    - by Frank Rosario
    We need to render an ActionResult to a string to add pages to our internal search engine index. We settled on this solution to render to string. I've run into a problem with the ExecuteResult call used to process the View. Code Snippet: var oldController = controllerContext.RouteData.Values["controller"]; controllerContext.RouteData.Values["controller"] = typeof(TController).Name.Replace("Controller", ""); viewResult.ExecuteResult(controllerContext); // this line breaks I receive the following error: "Object reference not set to instance of object" error. I've confirmed viewResult is not null, so the exception has to be thrown internally in ExecuteResult. What could we be missing?

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  • How Can I Learn about Interfaces

    - by BDotA
    I am using C# and I know what are the interfaces and how syntatically use them,etc. but what I have not learned yet is that when I am tasked to write a project, create a component,... How should I learn better about interfaces so when I want to do something I be able to Think about using them in my design...or for example I want to learn about dependency injection or even using mocking objects for testing, these are all related to good understanding of interfaces and know when and how to use them ... Can you plase provide me some good advice, reading,... then can help me with that?

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  • What happens when Npgsql connection pool reaches Max

    - by ClearCarbon
    Both the name of the connection string parameter and this blog post - http://fxjr.blogspot.co.uk/2010/04/npgsql-connection-pool-explained.html - lead me to believe that Npgsql wont exceed the MaxPoolSize value set in the connection string. However the docs (http://npgsql.projects.postgresql.org/docs/manual/UserManual.html) say "Max size of connection pool. Pooled connections will be disposed of when returned to the pool if the pool contains more than this number of connections. Default: 20" This suggests that the pool can actually grow larger than MaxPoolSize and it is in fact just a level at which Npgsql starts to aggressively remove connections from the pool as soon as they are returned. I've been searching to try and find an answer but I can find out exactly what happens when you reach MaxPoolSize. Anyone else know? edit: I should add we are using Npgsql 2.0.6.0 due to another dependency being supported only up to that version.

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  • Jquery - Errors only in Internet Explorer

    - by Gublooo
    Hey Guys I am getting several errors only on IE8 running on my vista OS. On the other browsers (Chrome, FF, Safari) everything works fine. Not sure where to begin looking. When I open a new IE8 browser and enter the homepage URL of my website - I get the following error and the page opens up blank: Line: 19 Character: 12043 Code: 0 Error Message: Object required URL: http://xyz.com/js/jquery.js Then in one other place - I have a modal form which has a text area - when I start typing - after typing every character - this error shows up Line: 19 Character: 30711 Code: 0 Error Message: 'this[...].style' is null or not an object URL: http://xyz.com/js/jquery.js Thanks for your help

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  • ASP.NET GridView sorting on method data

    - by husainnz
    Hi, I'm binding a GridView to a domain model object, this domain model object has a method for working out a formatted value to display on the grid. I'd like to use this method for my display value, which is fine, but I'd also like to be able to sort on the value returned by that method. My sort expression can only take in a property/field at the moment. Help please! What do I need to do to get this to work? I'm using an SPGridView actually, but that doesn't make a lot of difference to my problem. Thanks.

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  • How to rectify InvalidActiveXStateException in WPF?

    - by Gagan
    I am trying to make a WPF Application and using the Visio Controls. I have a dll named AxInterop.Microsoft.Office.Interop.VisOcx and I refer it to instantiate an object of the type AxDrawingControl(). Now as soon as I write this code: AxDrawingControl objDrawControl=new AxDrawingControl(); and check the attributes of this object objDrawControl in the debug mode, I see this message: Exception of type 'System.Windows.Forms.AxHost+InvalidActiveXStateException' was thrown. Here is how it looks like: Please help me to get this thing resolved! Please! I just realized the image isn't visible. So here is the link of the image showing the error message: http://www.freeimagehosting.net/uploads/fed103f4d3.jpg

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  • Weird bug in Java try-catch-finally

    - by kcr
    I'm using JODConverter to convert .xls and .ppt to .pdf format. For this i have code something like try{ //do something System.out.println("connecting to open office"); OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100); System.out.println("connection object created"); connection.connect(); System.out.println("connection to open office successful"); //do something if(!successful) throw new FileNotFoundException(); }catch(Exception e){ System.out.println("hello here"); System.out.println("Caught Exception while converting to PDF "); LOGGER.error("Error in converting media" + e.getMessage()); throw new MediaConversionFailedException(); }finally{ decode_pdf.closePdfFile(); System.out.println("coming in finally"); //do something here } My Output : connecting to open office connection object created coming in finally P.S. return type of method is void How is it possible ? Even if there is some problem in connection.connect(), it s'd come in catch block. confused

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  • Error in facebook.dll facebooksdk

    - by Surendar Radhakrishnan
    I got the web application working with facebooksdk and when i deployed it...it is running fine for sometime and it is throwing the error like this... Server Error in '/' Application. Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Assembly Load Trace: The following information can be helpful to determine why the assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' could not be loaded. WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. Stack Trace: [FileLoadException: Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied.] Secured_Login.FacebookVerification() +0 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.UI.Control.LoadRecursive() +71 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1 i got this method in pageload protected void Page_Load(object sender, EventArgs e) { FacebookVerification(); } protected void FacebookVerification() { try { FacebookApp fbApp = new FacebookApp(); if (fbApp.Session != null) { dynamic myinfo = fbApp.Get("me"); String firstname = myinfo.first_name; String lastname = myinfo.last_name; lblFBStatus.Text = "you signed in as " + firstname + " " + lastname ; } else { lblFBStatus.Text = "Please sign in with facebook"; } } catch (Exception) { throw; } }

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  • Unable to catch exception from Activator.CreateInstance.

    - by Patrik Hägne
    OK, I admit it this code will just look weird to you, and that's because it is weird. This is just code to reproduce the behavior, not code I want to use. class Program { static void Main(string[] args) { try { Activator.CreateInstance(typeof(Func<int>), new object[] { new object(), IntPtr.Zero }); } catch { Console.WriteLine("This won't print!"); } Console.Write("Actually this will not print either!"); Console.ReadLine(); } } No matter what exception type I try to catch (the actual exception thrown is an ArgumentException as far as I can tell) the code inside the catch block will not execute. Actually execution will just stop at the Activator.CreateInstance-line.

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  • Testing objects for changes

    - by David Veeneman
    I have an application that needs to determine whether a user has made a change to an object. So, when the object is first loaded, I create a deep copy (using serialization/deserialization) and save the copy to a separate field. The copy becomes myCurrentObject, and the original becomes myOriginalObject. Now I need to test myCurrentObject for changes, which I plan to do by comparing it to myOriginalObject. All I need is a boolean result indicating whether any changes have been made. I have already determined that a simple hashcode comparison won't work. GetHashCode() generates different results for the two objects, even when there are no changes. I am getting ready to write a method to do a property-by-property comparison, but before I do, I thought I would check to see if there is a simpler and more reusable way to test myCurrentObject to see if it has changed from myOriginalObject. Any suggestions? Thanks for your help.

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  • Get multiple records with one query

    - by Lewy
    User table: name lastname Bob Presley Jamie Cox Lucy Bush Find users q = Query.new("Bob Presley, Cox, Lucy") q.find_users => {0=>{:name=>"Bob", :lastname=>"Presley"}, 1=>{:lastname=>"Cox"}, 2=>{:name=>"Lucy"}} Question: I've got hash with few names and lastnames. I need to build Activerecord query to fetch all users from that hash. I can do object = [] hash = q.find_users hash.each do |data| #check if data[:lastname] and data[:name] exist # object << User.where(:name => ..., :lastname => ...) end But I think it is higly inefficient. How should I do this ?

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  • python, wrapping class returning the average of the wrapped members

    - by João Portela
    The title isn't very clear but I'll try to explain. Having this class: class Wrapped(object): def method_a(self): # do some operations return n def method_b(self): # also do some operations return n I wan't to have a class that performs the same way as this one: class Wrapper(object): def __init__(self): self.ws = [Wrapped(1),Wrapped(2),Wrapped(3)] def method_a(self): results=[Wrapped.method_a(w) for w in self.ws] sum_ = sum(results,0.0) average = sum_/len(self.ws) return average def method_b(self): results=[Wrapped.method_b(w) for w in self.ws] sum_ = sum(results,0.0) average = sum_/len(self.ws) return average obviously this is not the actual problem at hand (it is not only two methods), and this code is also incomplete (only included the minimum to explain the problem). So, what i am looking for is a way to obtain this behavior. Meaning, whichever method is called in the wrapper class, call that method for all the Wrapped class objects and return the average of their results. Can it be done? how? Thanks in advance. ps-didn't know which tags to include...

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  • How to Identify a ListViewItem to Update a Single Row

    - by tunneling
    I have a ListView displays information about an object. When I click a ListView Item, I open an Activity that let's me manipulate parameters of the object held in the adapter. These parameters are updated and stored remotely. When I return to the ListView (via the back button), I want to update the ListView Item that I clicked originally by requesting the parameter values from the remote server. I am currently doing this up updating the entire ListView by clearing it and rebuilding it. How do I reference the ListView Item so that I can update the data for that item only? Thanks, Jason

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  • jQuery Drag and Drop Checking Question

    - by Kim
    i am new to using jQuery and I just want to know how I can check whether a draggable object has been removed from the droppable object. Example, i have a dog and I dragged it to a doghouse which has a lightbulb that will light up indicating that the dog is there. When i drag the dog out of the doghouse, the lightbulb should go off again indicating the dog's absence. Help me please coz I really don't have any idea how to do this. Thanks in advance. :)

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  • Loading swf Problem in Air,Flex3

    - by vineth
    Hi, I have 2 swf file, one file is loading fine in SWFLoader in Air application but another is not loading, i dont know why its happening. differents between two file :- For ex: Swf1 is Main swf .(it has dependency file like xml to read and render) swf2 is Sub swf(which will load (or called) inside swf1 in run time) . When try to load swf2 in flex3 air application using SWFLoader its working fine, but swf1 is not loading. Swf1 is working fine individually in flash player 9. But i need to load SWF1 only. Thanks in advance

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  • AIR:- Desktop Application related to Window Component (Need some work around)

    - by Mahesh Parate
    Create custom component which contains Combobox and Datagrid. Application conations two button 1) Same Window and 2) New Window. (Label of two button) When you click on “Same Window” button your custom component should get added dynamically in your application. And when you click on “New Window” button your custom component should get open in different window (it should get shifted from application and should appear in Window component). Issue faced:- Clicking on Combobox, list is not getting open as change event doesn’t get fired in Native Window as it looses reference from main application. Issue with DataGrid in Native window (AIR). • DataGridEvent.COLUMN_STRETCH event get affected if try to open datagrid in Native Window. • DataGridEvent get fired but takes long time or even stuck while column stretch Note: Application is an Desktop Application. Only one instance is created in Application for your custom component to preserve current state on your custom component it can be Style, data, or other subcomponent state of your custom component (as above mentioned 2 component are just sample). Please find sample code below:- DataGridStretchIssue.mxml:- < ?xml version="1.0" encoding="utf-8"? < mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:local="*" width="800" height="500" < mx:Script < ![CDATA[ import mx.events.FlexEvent; import mx.core.Window; private var dgComp:DataGridComp = new DataGridComp(); private var win:Window; private function clickHandler(event:Event):void{ dgComp.percentWidth = 100; dgComp.percentHeight = 100; dgComp.x = 50; dgComp.y = 100; if(win){ win.close(); } this.addChild(dgComp); } private function openClickHandler(event:MouseEvent):void{ dgComp.x = 50; dgComp.y = 100; win = new Window();; win.width = 800; win.height = 500; win.addChild(dgComp); dgComp.percentWidth = 100; dgComp.percentHeight = 100; dgComp.x = 50; dgComp.y = 100; win.open(true) } ]]> < /mx:Script < mx:HBox <mx:Button id="btnID" click="clickHandler(event)" label="Same Window"/> <mx:Button id="btnIDOpen" click="openClickHandler(event)" label="New Window"/> < /mx:HBox < /mx:WindowedApplication DataGridComp.mxml < ?xml version="1.0" encoding="utf-8"? < mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="100%" height="100%" <mx:Script> <![CDATA[ import mx.events.DataGridEvent; import mx.collections.ArrayCollection; [Bindable] public var cards:ArrayCollection = new ArrayCollection( [ {label:"Visa", data:1}, {label:"MasterCard", data:2}, {label:"American Express", data:3} ]); private function stretchFn(event:DataGridEvent):void{ trace("--- Stretched---") } ]]> </mx:Script> <mx:HBox> <mx:ComboBox dataProvider="{cards}" width="150"/> <mx:DataGrid columnStretch="stretchFn(event)" > <mx:ArrayCollection> <mx:Object> <mx:Artist>Pavement</mx:Artist> <mx:Price>11.99</mx:Price> <mx:Album>Slanted and Enchanted</mx:Album> </mx:Object> <mx:Object> <mx:Artist>Pavement</mx:Artist> <mx:Album>Brighten the Corners</mx:Album> <mx:Price>11.99</mx:Price> </mx:Object> </mx:ArrayCollection> </mx:DataGrid> </mx:HBox> < /mx:Canvas Can any one suggest me some work around to make my code workable... :)

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  • how to implement IOC without a global static service (non-service locator solution)?

    - by Michel
    Hi, we want to use Unity for IOC. All i've seen is the implementation that there is one global static service which holds a reference to the Unity container, which registers all interface/class combinations and every class asks that object: give me an implementation for Ithis or IThat. Frequently i see a response that this pattern is not good because it leads to a dependency from ALL classes to this service. But what i don't see often, is: what is the alternative way? Michel EDIT: found out that the global static service is called the service locator, added that to the title.

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