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  • Change WPF Datagrid Row Color

    - by juergen d
    I have a WPF datagrid that is filled with an ObserverableCollection. Now I want to color the rows depending on the row content at the program start and if something changes during runtime. System.Windows.Controls.DataGrid areaDataGrid = ...; ObservableCollection<Area> areas; //adding items to areas collection areaDataGrid.ItemsSource = areas; areaDataGrid.Rows <-- Property not available. how to access rows here? CollectionView myCollectionView = (CollectionView)CollectionViewSource.GetDefaultView(areaDataGrid.Items); ((INotifyCollectionChanged)myCollectionView).CollectionChanged += new NotifyCollectionChangedEventHandler(areaDataGrid_Changed); ... void areaDataGrid_Changed(object sender, NotifyCollectionChangedEventArgs e) { //how to access changed row here? } How can I access the rows at start and runtime?

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  • Custom Control Events in C#

    - by pm_2
    I'm trying to create a custom control and need to raise an event from it. The idea is to raise an event at the end of the click event (OnAfterClick). I found one or two tutorials on doing this, but am clearly missing a step somewhere; I have the following. In the control: public class AfterClickEventArgs : EventArgs { ... } public partial class MyButton : CommandButton { public delegate void AfterClickEvnt(object sender, AfterClickEventArgs e); public event AfterClickUpdatedEvnt AfterClick; } protected override void OnClick(EventArgs e) { ... Processing here ... AfterClickEventArgs myArgs = new AfterClickEventArgs(); AfterClick(this, newArgs); } In the program using the control: In InitializeComponent(): this.MyButton.AfterClick += new System.EventHandler(this.cmdMyButton_Click); This line is giving me a compile error (cmdMyButton_Click does exist). It tells me: Cannot implicitly convert type 'System.EventHandler' to 'Namespace.MyButton.AfterClick' Can anyone tell me what I'm missing, or misunderstanding about this, please?

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  • How do I get the CoreData Debug argument to output to the console?

    - by radesix
    According to Apple documentation on debugging Core Data it says we should be able to pass an argument to the application which will output the SQL core data sends to SQLite. I have gone into the arguments tab of my executable in XCode and specified the argument: -com.apple.CoreData.SQLDebug 1 However, I see no SQL in the console. I then tried to use this parameter in the CoreDataBooks application provided by Apple just in case there was some other issue in MY program. Even in Apple's example I get no SQL output in the console. Am I doing something wrong? Is Apple's documentation wrong? Should I be looking someplace other than the console? Has anyone else had success with this argument?

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  • I'd like to preview a Word document on form.

    - by Tychumsempir
    I'm writing a VB program that fills in values within a word document. I'm utilizing the Microsoft Word 12.0 Object Library as a Reference. I'd like to provide a scrollable preview pane to my user that is within the form he or she is using. It would be even cooler if the user could edit the document through this pane. I've done Interop extensively, so I'm well aware of how to write and edit a Word document. I just want to put it into a frame and preview it. I'll probably try to select around the document based on what is changing as the user provides input so they can see what's being changed and where. Thoughts? Thanks

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  • I wired up a z 80 using telephone wire and put a jump to 0000 0000 0000 0000

    - by john
    I put 1100 0011 0000 0000 0000 0000 in the 2764 eprom --- this is supposed to test the z80 -- I have a 555 timer running at 500 khz. Can this small program work with the z80 ? I looked at the address pins on a m465 oscilloscope. The address shows highs up to 0100 0000. I think it should only count to 0000 0000 0000 0011. Can the z80 be tested? The Santa Clara Valley also made the lm1871 radio control chip that could not show a high or a low without completing the entire rc loop.

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  • Can NTFS-Search(An OSS project) scan any file on NTFS volume?

    - by Benjamin
    I want to apply NTFS-Search to our project. Our project have to find the files which we specified.(fast and exactly!) But I'm not sure the program(NTFS-Search) works well. What if the file specified is system file? What if the file is being opened by a process with NO_READ_SHARE_MODE? Do you think NTFS-Search can find any files? I don't know about NTFS filesystem well. So I can't find the answer myself. Is there anyone who knows that? I tried to find their email address, but I couldn't find. Thanks in advance.

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  • how to call windows paint event from child thread

    - by RAJ K
    If I am wrong then please correct me as I am new in this. I have one thread which display image captured from webcam on a windows created using CreateWindowEx() function. Now when i execute my program I can see that my paint code (in WindowProc()) in never reached (called InvalidateRect() from child thread to redraw), checked using breakpoint. Actually frame capture and display is being done in thread and I think because its in child thread and Window is in Main thread that is why its not able to call paint event. Can you help me on this

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  • google search rankings and trends api

    - by Drakkhen
    I'm looking to find an api or program or interface to get the following information. I would like to see the amount of times a particular search term was used and its /weekly/monthly/yearly breakdown along with its rank in a particular page. I've found googlesearchpositionfinder.com and google.com/trends but i have 5000 terms to search for by hand is not happening. I've also found www.juiceanalytics.com/openjuice/programmatic-google-trends-api but it doesn't allow me to do a break down for a period of 2 years. Basically i'm trying to create a ranking of search phrases, the weeks(period) they were more popular and how a particular site(e.g urban dictionary) showed up in googles search rankings for the terms.

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  • Problem using AudioRecord with 8-bit encoding in android

    - by maxsap
    Hello, I have made an application that records from the phones microphone using the AudioRecord and 16-bit encoding, and I am able to playback the recording. For some compatibility reason I need to use 8-bit encoding, but when I try to run the same program using that encoding I keep getting an Invalid Audio Format. my code is : int bufferSize = AudioRecord.getMinBufferSize(11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_8BIT); AudioRecord recordInstance = new AudioRecord( MediaRecorder.AudioSource.MIC, 11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_8BIT, bufferSize); Any one knows what is the problem? according to the documentation AudioRecord is capable of 8-bit encoding. thanks in advanced maxsap.

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  • What happens when I release a upgrade with higher targeted sdk as previous version?

    - by Peterdk
    SoundPool has a serious bug in it in Android 1.5. I fixed it with a workaround, but since it really limits my app, I want to target 1.6+ for the next version of it. I am wondering: What happens when I release a upgrade that has a higher target SDK version then the previous version of my app? Will only 1.6+ users be able to upgrade their app? Or will also the 1.5 users be able to upgrade since they have the program already installed? Anybody experience with this?

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  • Saving Excel Spreadsheet using Interop C#

    - by Wesley
    static void Main() { Application excelapp = new Application(); Workbook book = excelapp.Workbooks.Open(@"C:\HWYFAB.xlsx", 0, false, 5, "", "", false, XlPlatform.xlWindows , "", true, false, 0, true, false, false); Worksheet sheet = (Worksheet)book.Sheets[1]; Range cell = (Range)sheet.Cells[3, 2]; Console.WriteLine(cell.Text); cell.ClearContents(); book.Close(true, "HWYFAB.xlsx", false); excelapp.Quit(); } This program runs and exits as expected. It does print the correct value that's in cell B3 to the console. When closing it asks if I want to replace the existing file. I click yes. When I open the spreadsheet in Excel, the value is still in cell B3 despite the cell.ClearContents(). Any thoughts?

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  • Printing factorial at compile time in C++

    - by user519882
    template<unsigned int n> struct Factorial { enum { value = n * Factorial<n-1>::value}; }; template<> struct Factorial<0> { enum {value = 1}; }; int main() { std::cout << Factorial<5>::value; std::cout << Factorial<10>::value; } above program computes factorial value during compile time. I want to print factorial value at compile time rather than at runtime using cout. How can we achive printing the factorial value at compile time? I am using VS2009. Thanks!

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  • How to get the line number an xml element is on via the Java w3c dom api

    - by Benju
    Is there a way to lookup the line number that a given element is at in an xml file via the w3c dom api? My use case for this is that we have 30,000+ maps in kml/xml format. I wrote a unit test that iterates over each file found on the hard drive (about 17GB worth) and tests that it is parseable by our application. When it fails I throw an exception that contains the element instance that was considered "invalid". In order for our mapping department (nobody here knows how to program) to easily track down the typo we would like to log the line number of the element that caused the exception. Can anybody suggest a way to do this? Please note we are using the W3C dom api included in the Android 1.6 SDK.

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  • Mouse move and thread

    - by bsebi
    When I move the mouse over the window, the program runs much faster (cc. 3 times). This is a real time webcam .Net/Mono application running on a MacBook. On Windows works perfect. Is this maybe a power saving function of the laptop? The code: Thread t = new Thread(Foo); t.Priority = ThreadPriority.Highest; // I've tried without priority too, doesn't matter t.Start(); ... void Foo() { while (true) { ++k; // then write k to the window somehow } }

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  • Pseudorandom Number Generation with Specific Non-Uniform Distributions

    - by carnun
    Hello all, I'm writing a program that simulates various random walks (with differing distributions). At each timestep, I need randomly generated, two dimensional step distances and angles from the distribution of the random walk. I'm hoping someone can check my understanding of how to generate these random numbers. As I understand it I can use Inverse Transform Sampling as follows: If f(x) is the pdf of our random walk that has a non-uniform distribution, and y is a random number from a uniform distribution. Then if we let f(x) = y and solve to find x then we have a random number from the non-uniform distribution. Is this a feasible solution?

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  • How do I implement an higher lower game algorithm?

    - by lazorde
    The computer will guess a player’s number between 1 and 100. After each guess the human player should respond “higher”, “lower” or “correct”. Your program should be able to guess the player’s number in no more than 7 tries. Begin by explaining the game to the player, telling him/her to think of a number between 1 and 100. Make the computer do what you would normally do to guess a number in a certain range. Allow the user to respond with “higher”, “lower”, or “correct” after each computer guess. Output the number of tries it took the computer to guess the number. Make the game as user friendly as you can.

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  • I love programming but i also want to learn hardware. [closed]

    - by user167082
    I like programming so much, i did it since i was 10, and i believe that studying computer science will make a lot of money as well as i love it. However I also want to learn hardware. I don't only want to do programming all the time without knowing the architecture of device that i program. I asked my teacher, and she said that if I get into computer science, i won't learn anything about hardware, is it true?(She graduated from u-dub) In the other hand, my math teacher told me to get into electrical engineering, since it also contain programming. The thing is that i want to emphasize my study to programming while learning some about hardware. What is major that suits me the best? Can i take some hardware courses if I get into computer science major? Thanks a lot.

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  • Convert Yes/No/Null from SQL to True/False in a DataTable

    - by Scott Chamberlain
    I have a Sql Database (which I have no control over the schema) that has a Column that will have the varchar value of "Yes", "No", or it will be null. For the purpose of what I am doing null will be handled as No. I am programming in c# net 3.5 using a data table and table adapter to pull the data down. I would like to directly bind the column using a binding source to a check box I have in my program however I do not know how or where to put the logic to convert the string Yes/No/null to boolean True/False; Reading a null from the SQL server and writing back a No on a update is acceptable behavior. Any help is greatly appreciated. EDIT -- This is being developed for windows.

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  • cannot create new object in ActiveDirectory

    - by Humanier
    Hi. I'm trying to add new object to existing organisational unit in Active Directory. Following code is used to do this. It runs without errors. But new object is not created after this. Please advise what I'm doing wrong here. using System.DirectoryServices; using System.DirectoryServices.ActiveDirectory; namespace TestAdObjectCreation { class Program { static void Main(string[] args) { DirectoryEntry root = new DirectoryEntry("LDAP://servername/OU=Services,OU=PCX,DC=q2q,DC=xenyq,DC=com", "Administrator", "pass"); DirectoryEntry newItem = root.Children.Add("test_node", "valid_schema_class_name"); root.CommitChanges(); root.Close(); root.Dispose(); } } }

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  • Is it possible to "learn" a regular expression by user-provided examples?

    - by DR
    Is it possible to "learn" a regular expression by user-provided examples? To clarify: I do not want to learn regular expressions. I want to create a program which "learns" a regular expression from examples which are interactively provided by a user, perhaps by selecting parts from a text or selecting begin or end markers. Is it possible? Are there algorithms, keywords, etc. which I can Google for? EDIT: Thank you for the answers, but I'm not interested in tools which provide this feature. I'm looking for theoretical information, like papers, tutorials, source code, names of algorithms, so I can create something for myself.

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  • Complexity in using Binary search and Trie

    - by user121196
    given a large list of alphabetically sorted words in a file,I need to write a program that, given a word x, determines if x is in the list. Preprocessing is ok since I will be calling this function many times over different inputs. priorties: 1. speed. 2. memory I already know I can use (n is number of words, m is average length of the words) 1. a trie, time is O(log(n)), space(best case) is O(log(n*m)), space(worst case) is O(n*m). 2. load the complete list into memory, then binary search, time is O(log(n)), space is O(n*m) I'm not sure about the complexity on tri, please correct me if they are wrong. Also are there other good approaches?

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  • Arraylist can't compare objects after they are loaded from disk

    - by Zka
    To make it easy, lets say I have an arraylist allBooks containing class "books" and an arraylist someBooks containing some but not all of the "books". Using contains() method worked fine when I wanted to see if a book from one arraylist was also contained in another. The problem was that this isn't working anymore when I save both of the Arraylists to a .bin file and load them back once the program restarts. Doing the same test as before, the contains() returns false even if the compared objects are the same (have the same info inside). I solved it by overloading the equals method and it works fine, but I want to know why did this happen?

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  • How to get ip address programactically on Debian based system?

    - by gc
    I'm trying to retrieve the ip address of the local machine in my program. The OS running is Ubuntu 8.10. I tried using gethostname() and gethostbyname to do it. All I can get is 127.0.1.1. I learned that it seems to be a Debian thing: This thread explained it. The content of my /etc/hosts file is also: 127.0.0.1 localhost 127.0.1.1 mymachine In this case, is there any other way to programactically (prefer C or C++) to get the ip address without modifying the system file on the machine? Thanks in advance. g.c.

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  • Java - Loading dlls by a relative path and hide them inside a jar

    - by supertreta
    Hi guys, I am developing a Java application that should be release as a jar. This program depends on c++ external libraries called by JNI. To load them, I use the method System.load with an absolute path and this works fine. However, I really want to "hide" them inside the jar, so I have created a package to collect them. This forces me to load an relative path - the package path. By this approach, I let the user run the jar in any directory, without being worried about linking the dll's or bored with a previous installation process. This throws the expected exception: Exception in thread "main" java.lang.UnsatisfiedLinkError: Expecting an absolute path of the library How can I get this working? Thanks for your help!

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  • making a jar file for console

    - by user472221
    Hi I have a program without a GUI and I use console! So first I read a line from a user from console BufferedReader userReader = new BufferedReader(new InputStreamReader(System.in)); and then I will write an answer for the user in the console! System.out.println("Server:"+output); I want to create a jar file for it ! but how can i show my console in jar file with out using GUI? please help me thanks.

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