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  • Problem with WCF Streaming

    - by H4mm3rHead
    Hi, I was looking at this thread: http://stackoverflow.com/questions/1935040/how-to-handle-large-file-uploads-via-wcf I need to have a web service hosted at my provider where i need to upload and download files to. We are talking videos from 1Mb to 100Mb hence the streaming approach. I cant get it to work, i declared an Interface: [ServiceContract] public interface IFileTransferService { [OperationContract] void UploadFile(Stream stream); } and all is fine, i implement it like this: public string FileName = "test"; public void UploadFile(Stream stream) { try { FileStream outStream = File.Open(FileName, FileMode.Create, FileAccess.Write); const int bufferLength = 4096; byte[] buffer = new byte[bufferLength]; int count = 0; while((count = stream.Read(buffer, 0, bufferLength)) > 0) { //progress outStream.Write(buffer, 0, count); } outStream.Close(); stream.Close(); //saved } catch(Exception ex) { throw new Exception("error: "+ex.Message); } } Still no problem, its published to my webserver out on the interweb. So far so good. Now i make a reference to it and will pass it a FileStream, but the argument is now a byte[] - why is that and how do i get it the proper way for streaming? Edit My binding look like this: <bindings> <basicHttpBinding> <binding name="StreamingFileTransferServicesBinding" transferMode="StreamedRequest" maxBufferSize="65536" maxReceivedMessageSize="204003200" /> </basicHttpBinding> </bindings> I can consume it without problems, and get no errors - other than my input parameter has changed from a stream to a byte[]

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  • Implementing the outside application „openedFileView“ in c# Project

    - by case23
    I work on a application where i want to find out which files on my filesystem is used by a Process. After trying around with the System.Diagnostics.Process class, and didn´t get the resulst i wanted i find the application called OpenedFileView from Nirsoft. http://www.nirsoft.net/utils/opened_files_view.html Basically it does exactly what i want but i have some problems with the implimication in my project. The option wich “OpenedFileView” gives you is to start it with some arguments that it creates you an txt file with all the information i want. But for my case i want to whach the processes in realtime, and if i start the application repetitively i always have the hourglass at my mouse cursor. So after this i tryed some ways to get rid of it, tryed out to put it in a BackgroundWorker Thread. But this changed nothing at all. I also looked for a way to force the Process not to exit, and sending new arguments to it, but this also didn´t worked. So is there any way to use this application in the way I want, or does this didn´t work at all? I hope somebody can help me either with getting away this annoying mouse cursor hourglass, or with a better implimication of this application so i can use it in realtime! Thanks alot! private void start() { _openedFileView = new Process(); _openedFileView.StartInfo.FileName = "pathToApp\\OpenedFilesView.exe"; _openedFileView.EnableRaisingEvents = true; _openedFileView.Exited += new EventHandler(myProcess_Exited); _openedFileView.StartInfo.Arguments = "/scomma pathToOutputFile"; _openedFileView.Start(); } private void myProcess_Exited(object sender, System.EventArgs e) { start(); }

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  • Sort ArrayList alphabetically

    - by relyt
    I'm trying to find all permutations of a string and sort them alphabetically. This is what I have so far: public class permutations { public static void main(String args[]) { Scanner s = new Scanner(System.in); System.out.print("Enter String: "); String chars = s.next(); findPerms("", chars); } public static void findPerms(String mystr, String chars) { List<String> permsList = new ArrayList<String>(); if (chars.length() <= 1) permsList.add(mystr + chars); //System.out.print(mystr + chars + " "); else for (int i = 0; i < chars.length(); i++) { String newString = chars.substring(0, i) + chars.substring(i + 1); findPerms(mystr + chars.charAt(i), newString); } Collections.sort(permsList); for(int i=0; i<permsList.size(); i++) { System.out.print(permsList.get(i) + " "); } } } IF I enter a string "toys" I get: toys tosy tyos tyso tsoy tsyo otys otsy oyts oyst osty osyt ytos ytso yots yost ysto ysot stoy styo soty soyt syto syot What am I doing wrong. How can I get them in alphabetical order? Thanks!

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  • Uninstall Mono from Mac OS X v10.5 Leopard

    - by Mac
    I installed Mono on my iMac last night and I immidiately had a change of heart! I don't think Mono is ready for prime time. The Mono website says to run the following script to uninstall: #!/bin/sh -x #This script removes Mono from an OS X System. It must be run as root rm -r /Library/Frameworks/Mono.framework rm -r /Library/Receipts/MonoFramework-SVN.pkg cd /usr/bin for i in `ls -al | grep Mono | awk '{print $9}'`; do rm ${i} done Has anyone had to uninstall Mono? Was it as straight forward as running the above script or do I have to do more? How messy was it? Any pointers are appreciated. Thanks

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  • Idiomatic default sort using WCF RIA, EF4, Silverlight?

    - by Duncan Bayne
    I've got two Silverlight 4.0 ComboBoxes; the second displays the children of the entity selected in the first: <ComboBox Name="cmbThings" ItemsSource="{Binding Path=Things,Mode=TwoWay}" DisplayMemberPath="Name" SelectionChanged="CmbThingsSelectionChanged" /> <ComboBox Name="cmbChildThings" ItemsSource="{Binding Path=SelectedThing.ChildThings,Mode=TwoWay}" DisplayMemberPath="Name" /> The code behind the view provides a (simple, hacky) way to databind those ComboBoxes, by loading Entity Framework 4.0 entities through a WCF RIA service: public EntitySet<Thing> Things { get; private set; } public Thing SelectedThing { get; private set; } protected override void OnNavigatedTo(NavigationEventArgs e) { var context = new SortingDomainContext(); context.Load(context.GetThingsQuery()); context.Load(context.GetChildThingsQuery()); Things = context.Things; DataContext = this; } private void CmbThingsSelectionChanged(object sender, SelectionChangedEventArgs e) { SelectedThing = (Thing) cmbThings.SelectedItem; if (PropertyChanged != null) { PropertyChanged.Invoke(this, new PropertyChangedEventArgs("SelectedThing")); } } public event PropertyChangedEventHandler PropertyChanged; What I'd like to do is have both combo boxes sort their contents alphabetically, and I'd like to specify that behaviour in the XAML if at all possible. Could someone please tell me what is the idiomatic way of doing this with the SL4 / EF4 / WCF RIA technology stack?

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  • car race game collision condition.

    - by ashok patidar
    in this how can rotate car when it goes to collied with the track side. package { import flash.display.MovieClip; import flash.events.Event; import flash.events.KeyboardEvent; import flash.text.TextField; import flash.ui.Keyboard; import Math; /** * ... * @author Ashok */ public class F1race extends MovieClip { public var increment:Number = 0; //amount the car moves each frame public var posNeg:Number = 1; public var acceleration:Number = .05; //acceleration of the car, or the amount increment gets increased by. public var speed:Number = 0; //the speed of the car that will be displayed on screen public var maxSpeed:Number = 100; public var keyLeftPressed:Boolean; public var keyRightPressed:Boolean; public var keyUpPressed:Boolean; public var keyDownPressed:Boolean; public var spedometer:TextField = new TextField(); public var carRotation:Number ; public var txt_hit:TextField = new TextField(); public function F1race() { carRotation = carMC.rotation; trace(carMC.rotation); //addChild(spedometer); //spedometer.x = 0; //spedometer.y = 0; addChild(txt_hit); txt_hit.x = 0; txt_hit.y = 100; //rotation of the car addEventListener(Event.ENTER_FRAME, onEnterFrameFunction); stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed,false); stage.addEventListener(KeyboardEvent.KEY_UP, keyReleased,false); carMC.addEventListener(Event.ENTER_FRAME, carOver_road) } public function carOver_road(event:Event):void { //trace(texture.hitTestPoint(carMC.x,carMC.y,true),"--"); /* if(!texture.hitTestPoint(carMC.x,carMC.y,true)) { txt_hit.text = "WRONG WAY"; if(increment!=0) { increment=1; } } else { txt_hit.text = ""; //increment++; }*/ if (roadless.hitTestPoint(carMC.x - carMC.width / 2, carMC.y,true)) { trace("left Hit" + carMC.rotation); //acceleration = .005; //if(carMC.rotation>90 || carMC.rotation>90 //carMC.rotation += 2; if ((carMC.rotation >= 90) && (carMC.rotation <= 180)) { carMC.rotation += 3; carMC.x += 3; } if ((carMC.rotation <= -90) && (carMC.rotation >= -180)) { carMC.rotation += 3; texture.y -= 3; } if ((carMC.rotation > -90) && (carMC.rotation <= -1)) { carMC.rotation += 3; texture.y -= 3; } if(increment<0) { increment += 1.5 * acceleration; } if(increment>0) { increment -= 1.5 * acceleration; } } if (roadless.hitTestPoint(carMC.x + carMC.width / 2, carMC.y,true)) { trace("left right"); //carMC.rotation -= 2; if(increment<0) { increment += 1.5 * acceleration; } if(increment>0) { increment -= 1.5 * acceleration; } } if (roadless.hitTestPoint(carMC.x, carMC.y- carMC.height / 2,true)) { trace("left right"); //carMC.rotation -= 2; if(increment<0) { increment += 1.5 * acceleration; } if(increment>0) { increment -= 1.5 * acceleration; } } if (roadless.hitTestPoint(carMC.x, carMC.y+ carMC.height / 2,true)) { trace("left right"); //carMC.rotation -= 2; if(increment<0) { increment += 1.5 * acceleration; } if(increment>0) { increment -= 1.5 * acceleration; } } if ((!roadless.hitTestPoint(carMC.x - carMC.width / 2, carMC.y, true)) && (!roadless.hitTestPoint(carMC.x, carMC.y- carMC.height / 2,true)) && (!roadless.hitTestPoint(carMC.x, carMC.y+ carMC.height / 2,true)) && (!roadless.hitTestPoint(carMC.x, carMC.y+ carMC.height / 2,true))) { //acceleration = .05; } } public function onEnterFrameFunction(events:Event):void { speed = Math.round((increment) * 5); spedometer.text = String(speed); if ((carMC.rotation < 180)&&(carMC.rotation >= 0)){ carRotation = carMC.rotation; posNeg = 1; } if ((carMC.rotation < 0)&&(carMC.rotation > -180)){ carRotation = -1 * carMC.rotation; posNeg = -1; } if (keyRightPressed) { carMC.rotation += .5 * increment; carMC.LWheel.rotation = 8; carMC.RWheel.rotation = 8; steering.gotoAndStop(2); } if (keyLeftPressed) { carMC.rotation -= .5 * increment; carMC.LWheel.rotation = -8; carMC.RWheel.rotation = -8; steering.gotoAndStop(3); } if (keyDownPressed) { steering.gotoAndStop(1); carMC.LWheel.rotation = 0; carMC.RWheel.rotation = 0; increment -= 0.5 * acceleration; texture.y -= ((90 - carRotation) / 90) * increment; roadless.y = texture.y; if (((carMC.rotation > 90)&&(carMC.rotation < 180))||((carMC.rotation < -90)&&(carMC.rotation > -180))) { texture.x += posNeg * (((((1 - (carRotation / 360)) * 360) - 180) / 90) * increment); roadless.x = texture.x; } if (((carMC.rotation <= 90)&&(carMC.rotation > 0))||((carMC.rotation >= -90)&&(carMC.rotation < -1))) { texture.x += posNeg * ((carRotation) / 90) * increment; roadless.x = texture.x; } increment -= 1 * acceleration; if ((Math.abs(speed)) < (Math.abs(maxSpeed))) { increment += acceleration; } if ((Math.abs(speed)) == (Math.abs(maxSpeed))) { trace("hello"); } } if (keyUpPressed) { steering.gotoAndStop(1); carMC.LWheel.rotation = 0; carMC.RWheel.rotation = 0; //trace(carMC.rotation); texture.y -= ((90 - carRotation) / 90) * increment; roadless.y = texture.y; if (((carMC.rotation > 90)&&(carMC.rotation < 180))||((carMC.rotation < -90)&&(carMC.rotation > -180))) { texture.x += posNeg * (((((1 - (carRotation / 360)) * 360) - 180) / 90) * increment); roadless.x = texture.x; } if (((carMC.rotation <= 90)&&(carMC.rotation > 0))||((carMC.rotation >= -90)&&(carMC.rotation < -1))) { texture.x += posNeg * ((carRotation) / 90) * increment; roadless.x = texture.x; } increment += 1 * acceleration; if ((Math.abs(speed)) < (Math.abs(maxSpeed))) { increment += acceleration; } } if ((!keyUpPressed) && (!keyDownPressed)){ /*if (increment > 0 && (!keyUpPressed)&& (!keyDownPressed)) { //texture.y -= ((90-carRotation)/90)*increment; increment -= 1.5 * acceleration; } if((increment==0)&&(!keyUpPressed)&& (!keyDownPressed)) { increment = 0; } if((increment<0)&&(!keyUpPressed)&& (!keyDownPressed)) { increment += 1.5 * acceleration; }*/ if (increment > 0) { increment -= 1.5 * acceleration; texture.y -= ((90 - carRotation) / 90) * increment; roadless.y = texture.y; if (((carMC.rotation > 90)&&(carMC.rotation < 180))||((carMC.rotation < -90)&&(carMC.rotation > -180))) { texture.x += posNeg * (((((1 - (carRotation / 360)) * 360) - 180) / 90) * increment); roadless.x = texture.x; } if (((carMC.rotation <= 90)&&(carMC.rotation > 0))||((carMC.rotation >= -90)&&(carMC.rotation < -1))) { texture.x += posNeg * ((carRotation) / 90) * increment; roadless.x = texture.x; } } if (increment == 0) { increment = 0; } if (increment < 0) { increment += 1.5 * acceleration; texture.y -= ((90 - carRotation) / 90) * increment; roadless.y = texture.y; if (((carMC.rotation > 90)&&(carMC.rotation < 180))||((carMC.rotation < -90)&&(carMC.rotation > -180))) { texture.x += posNeg * (((((1 - (carRotation / 360)) * 360) - 180) / 90) * increment); roadless.x = texture.x; } if (((carMC.rotation <= 90)&&(carMC.rotation > 0))||((carMC.rotation >= -90)&&(carMC.rotation < -1))) { texture.x += posNeg * ((carRotation) / 90) * increment; roadless.x = texture.x; } } } } public function keyPressed(event:KeyboardEvent):void { trace("keyPressed"); if (event.keyCode == Keyboard.LEFT) { keyLeftPressed = true; } if (event.keyCode == Keyboard.RIGHT) { keyRightPressed = true; } if (event.keyCode == Keyboard.UP) { keyUpPressed = true; } if (event.keyCode == Keyboard.DOWN) { keyDownPressed = true; } } public function keyReleased(event:KeyboardEvent):void { trace("keyReleased..."); //increment -= 1.5 * acceleration; //increment--; if (event.keyCode == Keyboard.LEFT) { keyLeftPressed = false; } if (event.keyCode == Keyboard.RIGHT) { keyRightPressed = false; } if (event.keyCode == Keyboard.UP) { keyUpPressed = false; } if (event.keyCode == Keyboard.DOWN) { keyDownPressed = false; } } } }

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  • Subview of custom NSView is resizing itself to fit within its superview

    - by Jonathan Patt
    I have a custom NSView which contains a subview—for the purposes of solving this issue, the top level view is simply acting as a container and automatically resizes to fit within the window. Its subview draws a rectangle 10 pixels inset from the edge of the window, except for the bottom, which should get clipped by the window until it's resized to show the entire rectangle. It does not, however, behave as I intend, and instead shrinks the height of the rectangle when its superview has a smaller height than it does. How do I avoid this and have it stay at its proper height and instead get clipped when the superview is smaller? The parent view's implementation code is: - (id)initWithFrame:(NSRect)frameRect { self = [super initWithFrame:frameRect]; if (self) { subView = [[SubView alloc] initWithFrame:frameRect]; } return self; } - (void)drawRect:(NSRect)dirtyRect { [[NSColor grayColor] set]; [subView setFrame:NSMakeRect(10, 10, dirtyRect.size.width - 20, 500)]; [self addSubview:subView]; } - (BOOL)isFlipped { return YES; } And the subview is just: - (void)drawRect:(NSRect)dirtyRect { [[NSColor blackColor] set]; [NSBezierPath strokeRect:dirtyRect]; } - (BOOL)isFlipped { return YES; }

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  • function getting wrong values

    - by frankie
    so i have this function in C to calculate a power, and i'm using visual c++ 2010 power.h void power(); float get_power(float a, int n); power.c void power() { float a, r; int n; printf("-POWER-\n"); printf("The base: "); scanf("%f", &a); n = -1; while (n < 0) { printf("The power: "); scanf("%d", &n); if (n < 0) { printf("Power must be equal or larger than 0!\n"); } else { r = get_power(a, n); printf("%.2f ^ %d = %.2f", a, n, r); } }; } float get_power(float a, int n) { if (n == 0) { return 1; } return a * get_power(a, n-1); } not the best way to do it, i know, but that's not it when i debug it the values are scanned correctly (that is, the values are correct until just before the function call) but then upon entering the function a becomes 0 and n becomes 1074790400, and you can guess what happens next... the first function is being called from the main file, i included the full code because i really have no idea what could be going on, and i can't even think on how to google for it... strangely, i wrote the function in a single file and it works fine, but it definitely should work both ways any idea why this is happening?

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  • Adding audio channel using ffmpeg

    - by Raj
    Hi all, I am working on ffmpeg and trying to add a audio stream on the fly. I am using AudioQueues and I get raw audio buffer. I am encoding audio with linear PCM and hence the audio I get will be of raw format, which I know ffmpeg does accept it. But I cannot figure out how. I have looked into AVStream, where in we have to create a new stream for this audio channel but how do I encode it to a video which is already initialized in another AVStream structure. Overall, I would like to have an idea of the architecture of ffmpeg. I found it difficult to work since it is least documented. Any pointers or details are appreciated. Thanks and Regards, Raj Pawan G

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  • C#: WebBrowser.Navigated Only Fires when I MessageBox.Show();

    - by tsilb
    I have a WebBrowser control which is being instantiated dynamically from a background STA thread because the parent thread is a BackgroundWorker and has lots of other things to do. The problem is that the Navigated event never fires, unless I pop a MessageBox.Show() in the method that told it to .Navigate(). I shall explain: ThreadStart ts = new ThreadStart(GetLandingPageContent_ChildThread); Thread t = new Thread(ts); t.SetApartmentState(ApartmentState.STA); t.Name = "Mailbox Processor"; t.Start(); protected void GetLandingPageContent_ChildThread() { WebBrowser wb = new WebBrowser(); wb.Navigated += new WebBrowserNavigatedEventHandler(wb_Navigated); wb.Navigate(_url); MessageBox.Show("W00t"); } protected void wb_Navigated(object sender, WebBrowserNavigatedEventArgs e) { WebBrowser wb = (WebBrowser)sender; // Breakpoint HtmlDocument hDoc = wb.Document; } This works fine; but the messagebox will get in the way since this is an automation app. When I remove the MessageBox.Show(), the WebBrowser.Navigated event never fires. I've tried supplanting this line with a Thread.Sleep(), and by suspending the parent thread. Once I get this out of the way, I intend to Suspend the parent thread while the WebBrowser is doing its job and find some way of passing the resulting HTML back to the parent thread so it can continue with further logic. Why does it do this? How can I fix it? If someone can provide me with a way to fetch the content of a web page, fill out some data, and return the content of the page on the other side of the submit button, all against a webserver that doesn't support POST verbs nor passing data via QueryString, I'll also accept that answer as this whole exercise will have been unneccessary.

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  • What's the best way to create a Windows Mobile application with multiple screens in C#

    - by Joseph Earl
    I am creating a Windows Mobile Application in C# and Visual Studio 2008. The application will have 5-6 main 'screens'. There will also be bar (/area) with information (e.g. a title, whether the app is busy, etc) above the screens, and a toolbar (or similar control) below the screens with 5-6 buttons (with images) to change the active screen (i.e. the screens will share the top bar and toolbar) What is the best way to implement this? Use multiple forms, and just include the toolbar and top-bar in each Use a single form and something like the Tab control (but customised) to contain the screens Something else? Keeping in mind a) memory usage and b) time to switch screens. Thanks in advance. Any links, pointers etc are much appreciated.

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  • .NET socket timeout - blocking on Close method

    - by Mark
    I'm having trouble implementing a connect timeout using asynchronous socket calls. The idea being that I call BeginConnect on a Socket object, then use a timer to call Close() on the socket after a timeout period has elapsed. This works fine as long as the socket is created on the GUI thread - the Close method returns immediately, and the callback method is executed. However, if the socket is created on any other thread, the Close method blocks until the default IP timeout occurs. Code to reproduce: private Socket client; private void button1_Click(object sender, EventArgs e) { // Creating the socket on a threadpool thread causes Close to block. ThreadPool.QueueUserWorkItem((object state) => { client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IAsyncResult result = client.BeginConnect(IPAddress.Parse("144.1.1.1"), 23, new AsyncCallback(CallbackMethod), client); // Wait for 2 seconds before closing the socket. if (result.AsyncWaitHandle.WaitOne(2000)) { MessageBox.Show("Connected."); } else { MessageBox.Show("Timed out. Closing socket..."); client.Close(); MessageBox.Show("Socket closed."); } }); } private void CallbackMethod(IAsyncResult result) { MessageBox.Show("Callback started."); Socket client = result.AsyncState as Socket; try { client.EndConnect(result); } catch (ObjectDisposedException) { } MessageBox.Show("Callback finished."); } If you remove the QueueUserWorkItem line, creating the socket on the GUI thread, the socket closes instantly without blocking. Can anyone shed some light on what's going on? Thanks. Edit - System.Net trace output seems to be different depending on whether it's being connected on the GUI thread or a different thread: Trace from non-blocking close when using GUI thread Trace from blocking close when using non-GUI thread

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  • Can I use boost::make_shared with a private constructor?

    - by Billy ONeal
    Consider the following: class DirectoryIterator; namespace detail { class FileDataProxy; class DirectoryIteratorImpl { friend class DirectoryIterator; friend class FileDataProxy; WIN32_FIND_DATAW currentData; HANDLE hFind; std::wstring root; DirectoryIteratorImpl(); explicit DirectoryIteratorImpl(const std::wstring& pathSpec); void increment(); public: ~DirectoryIteratorImpl() {}; }; class FileDataProxy //Serves as a proxy to the WIN32_FIND_DATA struture inside the iterator. { friend class DirectoryIterator; boost::shared_ptr<DirectoryIteratorImpl> iteratorSource; FileDataProxy(boost::shared_ptr<DirectoryIteratorImpl> parent) : iteratorSource(parent) {}; public: std::wstring GetFolderPath() const { return iteratorSource->root; } }; } class DirectoryIterator : public boost::iterator_facade<DirectoryIterator, detail::FileDataProxy, std::input_iterator_tag> { friend class boost::iterator_core_access; boost::shared_ptr<detail::DirectoryIteratorImpl> impl; void increment() { impl->increment(); }; detail::FileDataProxy dereference() const { return detail::FileDataProxy(impl); }; public: DirectoryIterator() { impl = boost::make_shared<detail::DirectoryIteratorImpl>(); }; }; It seems like DirectoryIterator should be able to call boost::make_shared<DirectoryIteratorImpl>, because it is a friend of DirectoryIteratorImpl. However, this code fails to compile because the constructor for DirectoryIteratorImpl is private. Since this class is an internal implementation detail that clients of DirectoryIterator should never touch, it would be nice if I could keep the constructor private. Is this my fundamental misunderstanding around make_shared or do I need to mark some sort of boost piece as friend in order for the call to compile?

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  • Handler invocation speed: Objective-C vs virtual functions

    - by Kerido
    I heard that calling a handler (delegate, etc.) in Objective-C can be even faster than calling a virtual function in C++. Is it really correct? If so, how can that be? AFAIK, virtual functions are not that slow to call. At least, this is my understanding of what happens when a virtual function is called: Compute the index of the function pointer location in vtbl. Obtain the pointer to vtbl. Dereference the pointer and obtain the beginning of the array of function pointers. Offset (in pointer scale) the beginning of the array with the index value obtained on step 1. Issue a call instruction. Unfortunately, I don't know Objective-C so it's hard for me to compare performance. But at least, the mechanism of a virtual function call doesn't look that slow, right? How can something other than static function call be faster?

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  • Problem with implementing removeAll for List of custom object

    - by Jay
    Hello everyone, I have a scenario in my code where I need to compare two Lists and remove from the first list, objects which are present in the second list. Akin to how the "removeAll" object works for List. Since my List is created on a custom object, the removeAll method won't work for me. I have tried various methods to make this work: - implemented equals() and hashCode for the custom object comprising the list - implemented the Comparable Interface for the custom object - implemented the Comparator Interface for the custom object I've even tried using the Apache Common's CollectionUtils and ListUtils methods (subtract, intersect, removeAll). None seem to work. I understand I will perhaps need to write some custom removal code. But not sure how to go about doing that. Any pointers helping me move in the right direction will be really appreciated. Thanks, Jay

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  • Unmanaged DLL in C# Web Service

    - by Telis
    Hi Guys, please help µe as I am new into accessing an unmanaged DLL from C#.. I have a large unmanaged DLL in C++ and I am trying to access the DLL's classes and functions from a C# Web Service. I have seen many examples how to use DLLImport, but for some reason I am stuck with my very first wrapper method spending many hours with no luck.. What should I do to return an object in my 'Marshaled' [DllImport..] function? I would like to do something like that: [DllImport("unmanaged.dll")] public static extern MyClass MyFunction(); Here is the definition of my C++ class and the function that I want to access: class __declspec(dllexport) TPDate { public: TPDate(); TPDate(const TPDate& rhs); ... //today's date. static TPDate AsOfDate(void); ... } In my Web service I have declared the following StructLayout: [StructLayout(LayoutKind.Sequential)] public class TPDate { public TPDate(TPDate d) { _tpDate = d; } public TPDate _tpDate; } and here's where I think that I'm not doing something right: class WrapperTPDate { [DllImport("TPTools.dll", ExactSpelling=false, EntryPoint = "?AsOfDate@TPDate@@SA?AV1@XZ", CallingConvention = CallingConvention.StdCall)] [return: MarshalAs(UnmanagedType.Struct)] **public static extern TPDate AsOfDate();**// HERE THERE IS PROBLEM }; I am calling the wrapper as follows from my WebMethod: [WebMethod] public void ConstructModel() { TPDate date1 = WrapperTPDate.AsOfDate();// Here I get exception TPDate date = new TPDate(date1); } The exception i am getting is: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Runtime.InteropServices.MarshalDirectiveException: Cannot marshal 'return value': Invalid managed/unmanaged type combination (this type must be paired with LPStruct or Interface). If I change it to LPSTRUCT, I am getting another exception: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt Could you please tell me where I'm doing wrong here Thanks

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  • How to find out memory layout of your data structure implementation on Linux 64bit machine

    - by ajay
    In this article, http://cacm.acm.org/magazines/2010/7/95061-youre-doing-it-wrong/fulltext the author talks about the memory layouts of 2 data structures - The Binary Heap and the B-Heap and compares how one has better memory layout than the other. http://deliveryimages.acm.org/10.1145/1790000/1785434/figs/f5.jpg http://deliveryimages.acm.org/10.1145/1790000/1785434/figs/f6.jpg I want to get hands on experience on this. I have an implementation of a N-Ary Tree and I want to find out the memory layout of my data structure. What is the best way to come up with a memory layout like the one in the article? Secondly, I think it is easier to identify the memory layout if it is an array based implementation. If the implementation of a Tree uses pointers then what Tools do we have or what kind of approach is required to map it's memory layout? Thanks!

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

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

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  • WPF: UnauthorizedAccessException using anonymous methods.

    - by Diego Pacheco Pedemonte
    Here is the thing, I want to create a simply app that copy many files from one site, and move them to another; but using async methods and create a new thread. private void button3_Click(object sender, RoutedEventArgs e) { //progressBar1.Maximum = _FileInfoArray.Count; DispatcherTimer dt1 = new DispatcherTimer(); foreach (FileInfo Fi in _FileInfoArray) { Thread t = new Thread(new ThreadStart(delegate() { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { File.Copy(txtdestino.Text, Fi.FullName, true); //progressBar1.Value = n; //txtstatus.Content = ("Copiados " + n.ToString() + " archivos"); //Thread.Sleep(100); } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } )); t.Start(); } } UnauthorizedAccessException is throw! It says that I can't access to txtdestino content. Some clues? -------------------------------------------------------------------------------Edited This is the version with all the changes, get the same error :( any clues? private void button4_Click(object sender, RoutedEventArgs e) { //First: Build mynames List<string> mynames = new List<string>(); foreach (FileInfo fi in _FileInfoArray) { mynames.Add(fi.FullName); } Thread t = new Thread(new ThreadStart(delegate() { foreach (string fullname in mynames) { DispatcherOperation _dispOp = progressBar1.Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(delegate() { string destino = System.IO.Path.Combine(@"C:\", System.IO.Path.GetFileName(fullname)); File.Copy(fullname, destino, true); //Some progressbar changes } )); _dispOp.Completed += new EventHandler(_dispOp_Completed); } } )); t.Start(); } File.Copy(txtdestino.Text, Fi.FullName, true); // here the exception is throw

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  • Visual Studio code metrics misreporting lines of code

    - by Ian Newson
    The code metrics analyser in Visual Studio, as well as the code metrics power tool, report the number of lines of code in the TestMethod method of the following code as 8. At the most, I would expect it to report lines of code as 3. [TestClass] public class UnitTest1 { private void Test(out string str) { str = null; } [TestMethod] public void TestMethod() { var mock = new Mock<UnitTest1>(); string str; mock.Verify(m => m.Test(out str)); } } Can anyone explain why this is the case? Further info After a little more digging I've found that removing the out parameter from the Test method and updating the test code causes LOC to be reported as 2, which I believe is correct. The addition of out causes the jump, so it's not because of braces or attributes. Decompiling the DLL with dotPeek reveals a fair amount of additional code generated because of the out parameter which could be considered 8 LOC, but removing the parameter and decompiling also reveals generated code, which could be considered 5 LOC, so it's not simply a matter of VS counting compiler generated code (which I don't believe it should do anyway).

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  • Visual Studio 2010 automation

    - by JoelFan
    I am trying to run the following code (which I got from here ) Public Sub WriteToMyNewPane() Dim win As Window = _ DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput) Dim ow As OutputWindow = win.Object Dim owPane As OutputWindowPane Dim cnt As Integer = ow.OutputWindowPanes.Count owPane = ow.OutputWindowPanes.Add("My New Output Pane") owPane.Activate() owPane.OutputString("My text1" & vbCrLf) owPane.OutputString("My text2" & vbCrLf) owPane.OutputString("My text3" & vbCrLf) End Sub Instead of running it as a Macro, I want to run it as an independent console application that connects to a currently running instance of Visual Studio 2010. I'm having a hard time figuring out how to set the value of DTE. I think I may need to call GetActiveObject, but I'm not sure how. Any pointers?

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  • Use of double pointer in linux kernel Hash list implementation

    - by bala1486
    Hi, I am trying to understand Linux Kernel implementation of linked list and hash table. A link to the implementation is here. I understood the linked list implementation. But i am little confused of why double pointers is being used in hlist (**pprev). Link for hlist is here. I understand that hlist is used in implementation of hash table since head of the list requires only one pointer and it saves space. Why cant it be done using single pointer (just *prev like the linked list)? Please help me.

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  • Bring Winforms control to front

    - by Nathan
    Are there any other methods of bringing a control to the front other than control.BringToFront()? I have series of labels on a user control and when I try to bring one of them to front it is not working. I have even looped through all the controls and sent them all the back except for the one I am interested in and it doesn't change a thing. Here is the method where a label is added to the user control private void AddUserLabel() { UserLabel field = new UserLabel(); ++fieldNumber; field.Name = "field" + fieldNumber.ToString(); field.Top = field.FieldTop + fieldNumber; field.Left = field.FieldLeft + fieldNumber; field.Height = field.FieldHeight; field.Width = field.FieldWidth; field.RotationAngle = field.FieldRotation; field.Barcode = field.BarCoded; field.HumanReadable = field.HumanReadable; field.Text = field.FieldText; field.ForeColor = Color.Black; field.MouseDown += new MouseEventHandler(label_MouseDown); field.MouseUp += new MouseEventHandler(label_MouseUp); field.MouseMove += new MouseEventHandler(label_MouseMove); userContainer.Controls.Add(field); SendLabelsToBack(); //Send All labels to back userContainer.Controls[field.FieldName].BringToFront(); } Here is the method that sends all of them to the back. private void SendLabelsToBack() { foreach (UserLabel lbl in userContainer.Controls) { lbl.SendToBack(); } }

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  • why is this C++ Code not doing his job

    - by hamza
    i want to create a program that write all the primes in a file ( i know that its a popular algorithm but m trying to make it by my self ) , but it still showing all the numbers instead of just the primes , & i dont know why someone pleas tell me why #include <iostream> #include <stdlib.h> #include <stdio.h> void afficher_sur_un_ficher (FILE* ficher , int nb_bit ); int main() { FILE* p_fich ; char tab[4096] , mask ; int nb_bit = 0 , x ; for (int i = 0 ; i < 4096 ; i++ ) { tab[i] = 0xff ; } for (int i = 0 ; i < 4096 ; i++ ) { mask = 0x01 ; for (int j = 0 ; j < 8 ; j++) { if ((tab[i] & mask) != 0 ) { x = nb_bit ; while (( x > 1 )&&(x < 16384)) { tab[i] = tab[i] ^ mask ; x = x * 2 ; } afficher_sur_un_ficher (p_fich , nb_bit ) ; } mask = mask<<1 ; nb_bit++ ; } } system ("PAUSE"); return 0 ; } void afficher_sur_un_ficher (FILE* ficher , int nb_bit ) { ficher = fopen("res.txt","a+"); fprintf (ficher ,"%d \t" , nb_bit); int static z ; z = z+1 ; if ( z%10 == 0) fprintf (ficher , "\n"); fclose(ficher); }

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  • Copy Constructors and calling functions

    - by helixed
    Hello, I'm trying to call an accessor function in a copy constructor but it's not working. Here's an example of my problem: A.h class A { public: //Constructor A(int d); //Copy Constructor A(const A &rhs); //accessor for data int getData(); //mutator for data void setData(int d); private: int data; }; A.cpp #include "A.h" //Constructor A::A(int d) { this->setData(d); } //Copy Constructor A::A(const A &rhs) { this->setData(rhs.getData()); } //accessor for data int A::getData() { return data; } //mutator for data void A::setData(int d) { data = d; } When I try to compile this, I get the following error: error: passing 'const A' as 'this' argument of 'int A::getData()' discards qualifiers If I change rhs.getData() to rhs.data, then the constructor works fine. Am I not allowed to call functions in a copy constructor? Could somebody please tell me what I'm doing wrong? Thanks, helixed

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