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  • C# Serial Communications - Received Data Lost

    - by Jim Fell
    Hello. Received data in my C# application is getting lost due to the collector array being over-written, rather than appended. private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e) { try { pUartData_c = serialPort1.ReadExisting().ToCharArray(); bUartDataReady_c = true; } catch ( System.Exception ex ) { MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } In this example pUartData_c is over-written every time new data is received. On some systems this is not a problem because the data comes in quickly enough. However, on other systems data in the receive buffer is not complete. How can I append received data to pUartData_c, rather than over-write it. I am using Microsoft Visual C# 2008 Express Edition. Thanks.

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  • How do I connect a dataGrid to a DataSet

    - by orangecl4now
    using System.Windows; namespace Telephone_Directory { /// <summary> /// Interaction logic for MainWindow.xaml /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); telephone2010DataSet dataSet = new telephone2010DataSet(); telephone2010DataSetTableAdapter adapter = new telephone2010DataSetTableAdapter(); } } } The above is my code is a new project. Visual Studio 2010 complains that " the type or namespace 'telephone2010DataSetTableAdapter' could not be found." I created a new solution. I right clicked the solution name and selected "Add Existing Item" and located my Microsoft Access DB file. I followed the wizard and it setup the necessary XSD files. I started coding and I got this message. I did a little google-ing and I cant figure it out. This is a WPF application created with Visual Studio 2010.

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  • delete data using entity framework

    - by user3474542
    The objective of the method below is to delete the data from the database using entity framework. I am populating the subscriptions entity by passing two parameters and then calling the atttach and remove method of the context class. Bureau entities is the context class. using (BUREAUEntities bureauEntities = new BUREAUEntities()) { var subscription = new SubcriptionRepository().GetSusbcriptionBySubscriptionTypeId(subscriptionTypeId, companyId); bureauEntities.Subscriptions.Attach((DataAccessLayer.DatabaseModel.Subscription)subscription); bureauEntities.Subscriptions.Remove(subscription); bureauEntities.SaveChanges(); } I am getting the following error message at An entity object cannot be referenced by multiple instances of IEntityChangeTracker at line bureauEntities.Subscriptions.Attach((DataAccessLayer.DatabaseModel.Subscription)subscription); Could somebody tell me where am I going wrong ?

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  • VS2008 - 'Set as startup project' setting dissapearing.

    - by UpTheCreek
    I have a solution with a bunch of projects in it. The 'startup' project is a ASP.NET MVC Web Application. I set as the startup project (by right clicking on it in Solution Explorer and selecting 'set as startup project'. The project title goes bold and everything works fine for a while. Then I will be editing one of the supporting projects, and come to click the 'Start Debugging' button, and bang - the 'project of this type cant be started' message. I then check, and the web project is no longer set as the startup project. And so on.... Anyone know why this is happening?

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  • On Linux, how do I run a GUI app from a terminal shell under a different login?

    - by Eric
    Here's the deal. I logged into a Linux box (CentOS, but that shouldn't matter) as user A. I had to build a program as user B, so I started up a terminal shell, logged into that shell as B, and built it. When I try to run the app, I get this message: "connect to ":0.0" refused by server" Most likely because the current X Windows session is owned by user A, and as B, I don't have permissions to access A's stuff. Is there a correct way to solve this. Any incorrect ways?

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  • When Web page is displayed in a div, Error: Unable to modify the parent container element before the

    - by Jean
    Hello, A url is being displayed in a div as shown below <div id="ipage"> <? $url = "http://www.yahoo.com"; $file1 = fopen($url, "r"); $content = file_get_contents($url); echo $content; ?> </div> And I receive this error Webpage error details Message: HTML Parsing Error: Unable to modify the parent container element before the child element is closed (KB927917) Bright idea to solve this. Thanks Jean

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  • How to extend WCF returned class properly?

    - by vikasde
    I am using a WCF service in my project. This service returns a class called "Store". I created a new local class which inherits from "Store". My class is called "ExtendedStore". My ExtendedStore looks like this: class ExtendedStore : StoreManagerService.Store { public int Id; .... } Now I am using the WCF service to cast to my class using the following code: StoreManagerService.StoreClient client = new StoreManagerService.StoreClient(); ExtendedStore store = (ExtendedStore) client.GetStore(); // bombs here I am not able to cast the returned Store class from the service to my ExtendedStore class. I get the below error message: Unable to cast object of type 'ConsoleApplication1.StoreManagerService.Store' to type 'ConsoleApplication1.ExtendedStore'. Shouldn't I be able to cast it? If not, is there a workaround?

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  • Getting a NullReferenceException Error when invoking a Select File Dialog Box

    - by codingguy3000
    Hey everyone This is a real newbie question. I have simple app that selects a picture and display's that picture in a PictureBox. I decided to mess with the Opacity Attribute so I added a timer and created this cool effect where the Main Form's Opacity is increased by 20% every 400 miliseconds. The problem is that now when I click the button that invokes the Select File Dialog Box I'm getting a NullReferenceException error. private void tmrClock_Tick(object sender, EventArgs e) { if (ViewerForm.ActiveForm.Opacity != 1) { ActiveForm.Opacity = ActiveForm.Opacity + .20; } } The error message is pointing to the if statement. What am I doing wrong? Thanks

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  • How can I use gtkmm with MinGW (g++) without MSYS?

    - by paycity
    Hello stackoverflow members, How can I use gtkmm with MinGW (g++) without MSYS? Here is the story of my problem: I installed MinGW offline with all required packages (full install). I installed Apache Server and I copied all .tar.gz files and I created a website called sourceforge.org [localhost] and I installed automatically MinGW on Windows XP. After, I set the PATH variables. After, I installed gtkmm for MinGW (g++). I tried to compile a simple window with gtkmm + MinGW, but it does not work. I use this command line: g++ simple.cc -o simple pkg-config gtkmm-2.4 --cflags --libs After, I installed MSYS and I can compile simple.cc with MSYS, using this command line: g++ simple.cc -o simple pkg-config gtkmm-2.4 --cflags --libs My problem: I want to compile simple.cc without MSYS. I want compile my simple.cc with cmd.exe - It's possbile? If, yes. How? Thank you for reading my message. Any help is appreciated.

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  • greasemonkey insert javascript

    - by Kaartz
    I have a bookmarklet, clicking the bookmarklet includes a PHP script (evaluated as a JavaScript file) to the page few table values and select values passed as GET parameters. The PHP script writes the page data to the MySQL database, and outputs a success message that is treated as JavaScript code and executed by the browser. Is there any possibility to do this using greasemonkey and call this function when a existing button is clicked on the web page. I wrote the above bookmarklet inspired by this tutorial. http://tutorialzine.com/2010/04/simple-bookmarking-app-php-javascript-mysql/ This is the bookmarklet code: (function () { var jsScript = document.createElement('script'); jsScript.setAttribute('type', 'text/javascript'); jsScript.setAttribute('src', '/bookmark.php?url=' + encodeURIComponent(location.href) + '&title=' + encodeURIComponent(document.title)); document.getElementsByTagName('head')[0].appendChild(jsScript); })(); Please help me.

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  • Writing WCF messages to a text log in configurable directory.

    - by Arsh
    Hello everyone, I have a WCF web service that is deployed at IIS. Part of the web service is to validate the inputs using EntLib 4.1 For ex, the string values can be of specific length and so on. In case of the validation being failed a fault exception is raised and the service is supposed to write the message in log file. How do I go about creating the log file to a location that can be configured from a config file. Basically how do we write messages from IIS (since the service is hosted at IIS, I am assuming that that will be the source !!!!) Regards.

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  • Don't understand multiple parameter declarations in objective-c

    - by Blankman
    can someone clarify this for me: When there’s more than one argument, the arguments are declared within the method name after the colons. Arguments break the name apart in the declaration, just as in a message. For example: - (void)setWidth:(float)width height:(float)height; So in the above: method is for instance variables returns void parameter#1 is a float, named width. parameter#2 is a float,named height. But why is it hieght:(float)height; and not just: - (void)setWidth: (float)width (float)height;

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  • mCrypt not present after Ubuntu upgrade to 13.10

    - by VukBG
    After I have upgraded my system from Ubuntu 13.04 to 13.10 several problems have occurred with apache, mysql and php configurations. I solved most of them but I can't seem to get mCrypt library working. Package is installed so i don't need to apt-get it. Server works and everything seems fine, but when I try to run php artisan serve with Laravel 4, I get a message that mCrypt is required. I did php --ri mcrypt and the output was Extension 'mcrypt' not present. I have tried putting extension=mcrypt.so to /etc/php5/apache2/php.ini but it didn't worked. Any ideas?

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  • Calling HttpRequest::getRawRequestMessage() without send()

    - by danielgrad
    I am trying to call getRawRequestMessage() to get the raw HTTP content of the request described by a HttpRequest object, but I notice it always returns an empty string if I don't call send() first. Which kind of defeats my purpose (I want to send the data through other means than the HttpRequest's own send() method). Is there any other way to convert a HttpRequest object to it's raw string equivalent? To give more context: I'm working with a complex class that builds a HttpRequest object and sends requests through it and I want to add a new mode to the class that will work through raw sockets instead. The request is already built in the HttpRequest object and I would like to not have to parse the object manually to generate the HTTP message.

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  • Unexpected error 0x8ffe2740 occurred in IIS

    - by user1622824
    I have installed IIS in my system (WINDOWS-XP). While i am seeing IIS window, the Default web site is in stop mode. when i am ready to start IIS. It shows "Unexpected error 0x8ffe2740 occurred" Finally, I discovered that its caused by Skype. It listens to port 80 for incoming call. Now, most of the time IIS starts before Skype starts. So IIS works but if you restart IIS or try to start IIS after Skype is started then you will get this error message. For this, I changed my Skype settings Skype File-> Options -> Connection Uncheck Use Port 80 as an alternative for incoming connections. But even though i am unable to start my IIS. Please help me some one.. Thanks.

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  • How to correctly bind an object to a WPF DataGrid?

    - by mbadawi23
    I'm trying to get a WPF DataGrid to work from a user control I'm building. Things seems to work fine. But I noticed this message in the Output window in the IDE: System.Windows.Data Error: 39 : BindingExpression path error: 'Name' property not found on 'object' ''Object' (HashCode=18165668)'. BindingExpression:Path=Name; DataItem='Object' (HashCode=18165668); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String') System.Windows.Data Error: 39 : BindingExpression path error: 'Department' property not found on 'object' ''Object' (HashCode=18165668)'. BindingExpression:Path=Name; DataItem='Object' (HashCode=18165668); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')

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  • Oracle - Trigger to check constraint before insert

    - by user1816507
    i would like to create a simple trigger to check a stored variable from a table. if the value of the variable is '1', then approve the insertion else if the value of the variable is '2', then prompt error message. CREATE OR REPLACE TRIGGER approval BEFORE INSERT ON VIP REFERENCING OLD AS MEMBER FOR EACH ROW DECLARE CONDITION_CHECK NUMBER; BEGIN SELECT CONDITION INTO CONDITION_CHECK FROM MEMBER; IF CONDITION_CHECK = '2' THEN RAISE_APPLICATION_ERROR (-20000, ' UPGRADE DENIED!'); END IF; END; But this trigger disable all the entries even when the condition value is '1'.

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  • ant: iterator over properties file

    - by scheibenkleister
    Hi, all my projects and their versions are defined in a properties file like this: ProjectNameA=0.0.1 ProjectNameB=1.4.2 I'd like to iterate over all projects and use there names and versions in an ant script. Right now, I read the entire properties file in help of the property task. Then I iterate over a given list in a for loop like this: <for list="ProjectNameA,ProjectNameB" param="project"> <sequential> <echo message="@{project} has version ${@{project}}" /> </sequential> </for> How can I avoid the duplication of the project names in the for loop. So basically iterate over each line and extract the name and the version of a project. Thanks.

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  • Maven install-file won't generate pom.xml

    - by anotherCoder
    I've installed some third party jars to my repository using the following command: mvn install:install-file -Dfile=/home/anotherCoder/Downloads/nifty-1.0.jar -DgroupId=nifty-gui -DartifactId=nifty-gui -Dversion=1.0 -Dpackaging=jar However, once I do mvn compile, maven complains that there is no pom file in the repository and attempts to download it, but can't cause it is not published at any remote repository. Here is the exact message from maven: Downloading: http://repo1.maven.org/maven2/nifty-gui/nifty-gui/1.0/nifty-gui-1.0.pom [INFO] Unable to find resource 'nifty-gui:nifty-gui:pom:1.0' in repository central (http://repo1.maven.org/maven2) So how do I get maven to generate a pom file for that jar and put it in my local repository?

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  • Can Spring access-denied-handler refer to popup?

    - by Rens Groenveld
    I am working with Spring Security 3.1.x and have implemented method annotation securities. As I want, when I perform a certain action while being logged in as a used that doesn't have the rights, I get a 403 acces is denied in my console! Perfect! Now I would like to catch this 403, and give the user a popup with a custom message. I don't want to redirect users to a page saying that they have no rights. Is there any way the access-denied-handler of Spring can take care of a popup? Or can it only redirect to another page? Maybe there are other options for me? Thanks in advance!

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  • Renamed MySQL table not renamed for INSERT queries?

    - by Austin Hyde
    After renaming one of my MySQL MyISAM tables from test_tablename to tablename, I have found that if I try to execute an INSERT (or REPLACE) query, I get the following message: 1146: Table 'dbname.test_tablename' doesn't exist I have triple-checked my database abstraction code, and verified this by running the query directly on the server. According to the MySQL server, the CREATE TABLE syntax is tablename, as expected, and when I run SHOW TABLES, it lists tablename as expected. Is there any reason for this to happen? More importantly, is there an easier way to fix this than dumping, dropping, re-creating, and reloading the table?

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  • Secure messaging using Signed MIME is it reliable?

    - by aaronb
    We have an automatic reporting and notification system written in .net that sends emails with plain text. We are having to encrypt the messages that we send our clients. The possible implementation approaches we have: Send messages as S/Mime email with attachments. Plain text email with that just contains a link to a web site that will display the message over https. It seems like S/Mime is a simpler solution, as we won't need to create the web application or secure it. Our concern is our interoperability with our clients email clients and more importantly their email filtering software. Has anyone had success or issues deploying a Signed MIME messaging solution?

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  • applescript click every element via gui scripting

    - by user141146
    Hi, I'd like to iterate through every element on an iTunes window and try to click on each element. I'd also like to write to a text file showing each element that I've clicked. The code that I wrote below isn't working. Specifically, I get the error process "iTunes" doesn’t understand the click_an_element message. Thoughts on what I'm doing wrong? Thanks!! tell application "iTunes" to activate tell application "System Events" tell process "iTunes" set elements to get entire contents of window "iTunes" repeat with i from 1 to (length of elements) set ele to item i of elements click_an_element(ele) show_what_you_clicked(ele) end repeat end tell end tell -------handlers------------ to click_an_element(an_element) tell application "iTunes" to activate tell application "System Events" tell process "iTunes" try click an_element end try end tell end tell end click_an_element to show_what_you_clicked(thing_to_type) tell application "TextEdit" to activate tell application "System Events" tell process "TextEdit" keystroke thing_to_type key code 36 end tell end tell end show_what_you_clicked

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  • grails mail connection refused

    - by mkoryak
    it seems i have tried the mail config in the way that its docs said, but still i get: Error 500: Executing action [x] of controller [x] caused exception: Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP I am using google apps for my email so [email protected] is using gmail. i cannot get grails to send out a test message on my dev box (win 7). my config is: host = "smtp.gmail.com" port = 465 username = "[email protected]" password = "x" props = ["mail.smtp.auth":"true", "mail.smtp.debug":"true", "mail.smtp.starttls.enable":"true", "mail.smtp.socketFactory.port":"465", "mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory", "mail.smtp.socketFactory.fallback":"false"]

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  • How do I propagate an exception thrown by croak in forked child to parent/foreground process?

    - by Pedro Silva
    Throwing an exception via croak in a forked child process seems to print the error as a background process would. That is, it clobbers the shell prompt. If I die instead of croak, the the error message pops up as a foreground process. I've trying to find out why that is in the Carp documentation without any luck. Here's what I mean. The croak version: $ perl Wrapper.pm $ error: ... does not exist at Wrapper.pm line 624 The die version: $ perl Wrapper.pm error: ... does not exist at Wrapper.pm line 515. I tried trapping the fork and printing $@ to STDERR and exiting, but that didn't have an effect. Any ideas? I'd like to be able to use croak in this particular case.

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