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  • Abstract Forms using WinForms

    - by pm_2
    I’m trying to achieve a similar affect in a WinForms application as a master form does with ASP.NET. My initial thoughts on this were to create a base form and declare it as abstract, but the compiler doesn’t seem to let me do this. public abstract partial class Master : Form { public Master() { InitializeComponent(); } } So I have two questions: Why will the compiler not let me do this? Am I using the wrong syntax or is this a genuine restriction. Can anyone suggest a workaround or better way to do this? EDIT: InitializeComponent code: private void InitializeComponent() { this.components = new System.ComponentModel.Container(); this.mainMenu1 = new System.Windows.Forms.MainMenu(); this.Menu = this.mainMenu1; this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi; this.Text = "Master"; this.AutoScroll = true; }

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  • I keep Getting KeyError: 'tried' Whenever I Tried to Run Django Dev Server from Remote Machine

    - by Spikie
    I am running django on python2.6.1, and did start the django web server like this manage.py runserver 192.0.0.1:8000 then tried to connect to the django dev web server on http://192.0.0.1:8000/ keep getting this message on the remote computer Traceback (most recent call last): File "C:\Python26\Lib\site-packages\django\core\servers\basehttp.py", line 279, in run self.result = application(self.environ, self.start_response) File "C:\Python26\Lib\site-packages\django\core\servers\basehttp.py", line 651, in call return self.application(environ, start_response) File "C:\Python26\lib\site-packages\django\core\handlers\wsgi.py", line 241, in call response = self.get_response(request) File "C:\Python26\lib\site-packages\django\core\handlers\base.py", line 115, in get_response return debug.technical_404_response(request, e) File "C:\Python26\Lib\site-packages\django\views\debug.py", line 247, in technical_404_response tried = exception.args[0]['tried'] KeyError: 'tried' what i am doing wrong ? it seen to work ok if i run http://192.0.0.1:8000/ on the computer that runs the Django web server and have that ip 192.0.0.1:8000

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  • Is there a better approach to minify html generated from aspx page

    - by Hoque
    I am using the following code to minify html generated from aspx page duuring runtime. protected override void Render(HtmlTextWriter writer) { TextWriter output = new StringWriter(); base.Render(new HtmlTextWriter(output)); String html = output.ToString(); html = Regex.Replace(html, @"\n|\t", " "); html = Regex.Replace(html, @">\s+<", "><").Trim(); html = Regex.Replace(html, @"\s{2,}", " "); writer.Write(html); } Is there more better approach to do the same. Thank you so much.

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  • Rails after_create callback can't access model's attributes

    - by tybro0103
    I can't access my model's attributes in the after_create callback... seems like I should be able to right? controller: @dog = Dog.new(:color => 'brown', :gender => 'male') @dog.user_id = current_user.id @dog.save model: class Dog < ActiveRecord::Base def after_create logger.debug "[DOG CREATED] color:#{color} gender:#{gender} user:#{user_id}" end end console: (all seems well) >>Dog.last =>#<Dog id: 1, color: "brown", gender: "male", user_id: 1> log: (wtf!?) ... [DOG CREATED] color: gender:male user ... Some of my attributes show up and others don't! oh no! Anyone know what I'm doing wrong? I've always been able to user after_create in such ways in the past. Note: The actual variable names and values I used were different, but the methods and code are the same.

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  • error with gtkmm 3 in ubuntu 12.04

    - by Grohiik
    i install libgtkmm-3.0-dev in ubuntu 12.04 and i try to learn and write program with c++ and gtkmm 3 i go to this link "http://developer.gnome.org/gtkmm-tutorial/unstable/sec-basics-simple-example.html.en" and try to compile simple example program : #include <gtkmm.h> int main(int argc, char *argv[]) { Glib::RefPtr<Gtk::Application> app = Gtk::Application::create(argc, argv, "org.gtkmm.examples.base"); Gtk::ApplicationWindow window; return app->run(window); } my file name is "basic.cc" and i open terminal and type following command to compile: g++ basic.cc -o basic `pkg-config gtkmm-3.0 --cflags --libs` compile completed without any error but when i try to run program with type ./basic in terminal i get following error : ~$ ./simple ./simple: symbol lookup error: ./simple: undefined symbol:_ZN3Gtk11Application6createERiRPPcRKN4Glib7ustringEN3Gio16ApplicationFlagsE ~$ how can i solve this problem ? i can cimpile any gtkmm 2.4 code with this command : " g++ basic.cc -o basic pkg-config gtkmm-3.0 --cflags --libs " and this command : " g++ basic.cc -o basic pkg-config gtkmm-2.4 --cflags --libs " thanks

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  • xcode - ipad app. UIWebView Remember login info

    - by Aakburns
    I'm working on an application to run base camps website only. I need it to work when you login and press "Remember me on this computer" I'm not sure how to set it up to actually remember your login and keep you logged in when you come back to the app. Is there a way to 'save' the state of the application when you quite it and come back to what you were doing? Here is an image of the login form on the website used in the application. http://arikburns.com/forums/fn/IMG_0005.PNG Thanks.

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  • The underlying connection was closed: An unexpected error occurred on a receive

    - by Dave
    Using a console app which runs as a scheduled task on Azure, to all a long(ish) running webpage on Azure. Problem after a few minutes: The underlying connection was closed: An unexpected error occurred on a receive //// used as WebClient doesn't support timeout public class ExtendedWebClient : WebClient { public int Timeout { get; set; } protected override WebRequest GetWebRequest(Uri address) { HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address); if (request != null) request.Timeout = Timeout; request.KeepAlive = false; request.ProtocolVersion = HttpVersion.Version10; return request; } public ExtendedWebClient() { Timeout = 1000000; // in ms.. the standard is 100,000 } } class Program { static void Main(string[] args) { var taskUrl = "http://www.secret.com/secret.aspx"; // create a webclient and issue an HTTP get to our url using (ExtendedWebClient httpRequest = new ExtendedWebClient()) { var output = httpRequest.DownloadString(taskUrl); } } }

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  • Javascript debugging: stopping/breaking at every javascript invocation

    - by portoalet
    I am dealing with a complex legacy javascript code base, and it's difficult to figure out where to put breakpoint (I have to find the files, put a breakpoint in firebug etc). Is there a way so that Firebug breaks on the first javascript execution that it encounters every time? In other words, every time I click on something on the page, and if a javascript code is executed, I want Firebug to break on that line? Of course I don't want Firebug to stop when it executes it's internal javascript. Is this possible?

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  • SQL Server won't perform regular expression validation on XML column

    - by Kirk Broadhurst
    Hi I have an XML column in my table which contains this xsd snippet: <xsd:element name="Postcode" minOccurs="0"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:pattern value="^[0-9]{4}$" /> </xsd:restriction> </xsd:simpleType> </xsd:element> The regular expression should require a string containing 4 numerical digits. It validates perfectly in Visual Studio and is a correct regular expression. SQL Server, on the other hand, won't accept it. The error message I receive is: XML Validation: Invalid simple type value: '1234'. Location: / * : Donor[1]/*:Postcode[1]. I have an email address regex working fine, but can't get this simple numerical regex to work.

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  • Where should I exclude and select information BL or DL?

    - by MRFerocius
    Hi guys; I have another conceptual question. Suppose I have a Data Layer and a Bussines Layer. I have on my data base for example Customers and those customers has an assigned Vendor: Customers(customerID, customerName, customerAddress, vendorID) Vendors(vendorID, vendorName, vendorAddress) Now suppose my Vendor logs into my web application and wants to see all his customers: a) Should I use my Datalayer method and there find his customers on the query? b) Should the data layer return all the customers and on the Buissnes Layer filter that vendor ones? Is B even a good approach because is the one I want to use.... Is it correct? Thanks in advance!!!

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  • Rabbitmq queue sharding

    - by kolchanov
    I have to implement this scenario: An external application publish message to rabbitmq. This message has a client_id property. We can place this id to routing key or message header or some other property. I have to implement sharding in a exchange routng logic - the message should be delivered to specific queue based on the client_id range. Is it possible to implement in a standard exchanges? If not what exchange should I take as the base? How to dynamicly change client_id ranges?

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  • undefined symbols when compiling libjingle for Mac OS X

    - by wwh37
    Compiling libjinge-0.4.0 on my Leopard returned the following errors: /bin/sh ../../../libtool --silent --tag=CXX --mode=link g++ -g -o login login-login_main.o login-xmppsocket.o login-xmppthread.o login-xmpppump.o login-xmppauth.o ../../../talk/xmpp/libcricketxmpp.la ../../../talk/xmllite/libcricketxmllite.la ../../../talk/base/libcricketbase.la -lexpat -lpthread -lssl -lcrypto Undefined symbols: "_BIO_clear_flags", referenced from: socket_read(bio_st*, char*, int)in libcricketbase.a(openssladapter.o) socket_write(bio_st*, char const*, int)in libcricketbase.a(openssladapter.o) "_BIO_set_flags", referenced from: socket_read(bio_st*, char*, int)in libcricketbase.a(openssladapter.o) socket_write(bio_st*, char const*, int)in libcricketbase.a(openssladapter.o) Any ideas? I couldn't find an answer... Thanks!

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  • Downloading Eclipse's Source Code

    - by digiarnie
    I'm doing a study on large Java projects and would like to view the source code for Eclipse. I have gone to this url (http://wiki.eclipse.org/index.php/CVS_Howto) and figured that the most useful cvs repository for me to look at would be this one: :pserver:[email protected]:/cvsroot/eclipse (The Eclipse platform project) However, when looking at this repository, it has so many modules! Which modules should I be trying to check out? I don't necessarily want to build the IDE from source, however, I just want to get the core Eclipse code base to perform some analysis. Would I just check out any modules starting with "org.eclipse..."? Should I be checking out any of the others? Or is there an easier way to get the source? I read somewhere that you can get the source from the binary version of Eclipse but I am unsure where to find the source.

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  • First Call to a Controller, Constant is defined, Second call, "uninitialized constant Oauth"?

    - by viatropos
    I am trying to get the OAuth gem to work with Rails 3 and I'm running into this weird problem... (independent of the gem, I think I've run into this once before) I have a controller called "OauthTestController", and a model called "ConsumerToken". The model looks like this. require 'oauth/models/consumers/token' class ConsumerToken < ActiveRecord::Base include Oauth::Models::Consumers::Token end When I go to "/oauth_test/twitter", it loads the Oauth::Models::Consumers::Token module and I'm able to connect to twitter no problem. But the second time I try it (just refresh the /oauth_test/twitter url), it gives me this error: NameError (uninitialized constant Oauth): app/models/consumer_token.rb:4 app/models/twitter_token.rb:2 app/controllers/oauth_test_controller.rb:66:in `load_consumer' Why is that? It has something to do with load paths or being in development mode maybe?

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  • PostSharp OnExceptionAspect not working as expected

    - by Rune Sundling
    Created a simple class to test out the OnExceptionAspect in PostSharp. [Serializable] [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)] public class ExceptionSwallower : OnExceptionAspect { public override void OnException(MethodExecutionEventArgs eventArgs) { eventArgs.FlowBehavior = FlowBehavior.Return; base.OnException(eventArgs); } } Added the attribute to a method [ExceptionSwallower] public void SomeMethod() { throw new Exception(); } and invoked it. However, the exception is not actually swallowed, which seems odd. I haven't been able to find any similar problems, so I expect there is some minor thing I haven't gotten right. Anyone?

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  • Logging with log4j on tomcat jruby-rack for a Rails 3 application

    - by John
    I just spent the better part of 3 hours trying to get my Rails application logging with Log4j. I've finally got it working, but I'm not sure if what I did is correct. I tried various methods to no avail until my various last attempt. So I'm really looking for some validation here, perhaps some pointers and tips as well -- anything would be appreciated to be honest. I've summarized all my feeble methods into three attempts below. I'm hoping for some enlightenment on where I went wrong with each attempt -- even if it means I get ripped up. Thanks for the help in advance! System Specs Rails 3.0 Windows Server 2008 Log4j 1.2 Tomact 6.0.29 Java 6 Attempt 1 - Configured Tomcat to Use Log4J I basically followed the guide on the Apache Tomcat website here. The steps are: Create a log4j.properties file in $CATALINA_HOME/lib Download and copy the log4j-x.y.z.jar into $CATALINA_HOME/lib Replace $CATALINA_HOME/bin/tomcat-juli.jar with the tomcat-juli.jar from the Apache Tomcat Extras folder Copy tomcat-juli-adapters.jar from the Apache Tomcat Extras folder into $CATALINA_HOME/lib Delete $CATALINA_BASE/conf/logging.properties Start Tomcat (as a service) Expected Results According to the Guide I should have seen a tomcat.log file in my $CATALINA_BASE/logs folder. Actual Results No tomcat.log Saw three of the standard logs instead jakarta_service_20101231.log stderr_20101231.log stdout_20101231.log Question Shouldn't I have at least seen a tomcat.log file? Attempt 2 - Use default Tomcat logging (commons-logging) Reverted all the changes from the previous setup Modified $CATALINA_BASE/conf/logging.properties by doing the following: Adding a setting for my application in the handlers line: 5rails3.org.apache.juli.FileHandler Adding Handler specific properties 5rails3.org.apache.juli.FileHandler.level = FINE 5rails3.org.apache.juli.FileHandler.directory = ${catalina.base}/logs 5rails3.org.apache.juli.FileHandler.prefix = rails3. Adding Facility specific properties org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/rails3].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/rails3].handlers = 4host-manager.org.apache.juli.FileHandler Modified my web.xml by adding the following context parameter as per the Logging section of the jruby-rack readme (I also modified my warbler.rb accordingly, but I did opted to change the web.xml directly to test things faster). <context-param> <param-name>jruby.rack.logging</param-name> <param-value>commons_logging</param-value> </context-param> Restarted Tomcat Results A log file was created (rails3.log), however there was no log information in the file. Attempt 2A - Use Log4j with existing set up I decided to go Log4j another whirl with this new web.xml setting. Copied the log4j.jar into my WEB-INF/lib folder Created a log4j.properties file and put it into WEB-INF/classes log4j.rootLogger=INFO, R log4j.logger.javax.servlet=DEBUG log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=${catalina.base}/logs/rails3.log log4j.appender.R.MaxFileSize=5036KB log4j.appender.R.MaxBackupIndex=4 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%d{dd MMM yyyy HH:mm:ss} [%t] %-5p %c %x - %m%n Restarted Tomcat Results Same as Attempt 2 NOTE: I used log4j.logger.javax.servlet=DEBUG because I read in the jruby-rack README that all logging output is automatically redirected to the javax.servlet.ServletContext#log method. So I though this would capture it. I was obviously wrong. Question Why didn't this work? Isn't Log4J using the commons_logging API? Attempt 3 - Tried out slf4j (WORKED) A bit uncertain as to why Attempt 2A didn't work, I thought to myself, maybe I can't use commons_logging for the jruby.rack.logging parameter because it's probably not using commons_logging API... (but I was still not sure). I saw slf4j as an option. I have never heard of it and by stroke of luck, I decided to look up what it is. After reading briefly about what it does, I thought it was good of a shot as any and decided to try it out following the instructions here. Continuing from the setup of Attempt 2A: Copied slf4j-api-1.6.1.jar and slf4j-simple-1.6.1.jar into my WEB-INF/lib folder I also copied slf4j-log4j12-1.6.1.jar into my WEB-INF/lib folder Restarted Tomcat And VIOLA! I now have logging information going into my rails3.log file. So the big question is: WTF? Even though logging seems to be working now, I'm really not sure if I did this right. So like I said earlier, I'm really looking for some validation more or less. I'd also appreciate any pointers/tips/advice if you have any. Thanks!

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  • Cloning just a particular directory with hg?

    - by leeand00
    I come from a Subversion background, but I am slowly migrating to Mercurial. When starting on many of my projects, I would setup a development environment that was configured to a particular starting point in developing an app/webapp/program (much like a Maven 2 archetype, but not necessarily Java/Maven). Later I would checkout this archetype/template project out of my svn repo by its particular path; and than export the working copy from version control by the repository; so that I could import the working copy back in to another repository without adding the changes that I made to the working copy to the base the template/archetype project. I've tried doing the same thing in Mercurial, and I've run into a wall since I can't check out, er..um..no, clone a specific path from the hg repository. If I want to achieve the same sort of functionality using Mecurial, what should I do? Use tagged branches? The archetypes/template projects are very different, but I'd like to keep them in the same repository.

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  • iTunes Connect rejects my binary because I used a pre-release version of the SDK, what should I do?

    - by Prairiedogg
    NOTE - I'm posting this question to answer myself as a service to the community. Stay tuned for the answer. I downloaded a pre-release version of the iPhone SDK and tried to update one of my existing apps using a binary I built with it. Obviously you are not supposed to do this but I had forgotten about the warning when I installed the pre-release SDK. Anyway - I have two questions: Can I simply set the base SDK to an earlier version in the build settings and get around this problem? If not, then what should I do?

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  • Catching Oracle Errors in Django

    - by Dashdrum
    My Django app runs on an Oracle database. A few times a year, the database is unavailable because of a scheduled process or unplanned downtime. However, I can't see how to catch the error a give a useful message back to the requester. Instead, a 500 error is triggered, and I get an email (or hundreds) showing the exception. One example is: File "/opt/UDO/env/events/lib/python2.6/site-packages/django/db/backends/oracle/base.py", line 447, in _cursor self.connection = Database.connect(conn_string, **conn_params) DatabaseError: ORA-01035: ORACLE only available to users with RESTRICTED SESSION privilege I see a similar error with a different ORA number when the DB is down. Because the exception is thrown deep within the Django libraries, and can be triggered by any of my views or the built in admin views, I don't know where any exception trapping code would go. Any suggestions?

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  • How to convert *.aspx (HTML) page to Image format

    - by Swapnil Fegade
    I want to convert *.aspx (HTML) page's (User Interface) to Image such as JPEG. I am using below code for that Protected Sub btnGet_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnGet.Click saveURLToImage("http://google.co.in") End Sub Private Sub saveURLToImage(ByVal url As String) If Not String.IsNullOrEmpty(url) Then Dim content As String = "" Dim webRequest__1 As System.Net.WebRequest = WebRequest.Create(url) Dim webResponse As System.Net.WebResponse = webRequest__1.GetResponse() Dim sr As System.IO.StreamReader = New StreamReader(webResponse.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8")) content = sr.ReadToEnd() 'save to file Dim b As Byte() = Convert.FromBase64String(content) Dim ms As New System.IO.MemoryStream(b, 0, b.Length) Dim img As System.Drawing.Image = System.Drawing.Image.FromStream(ms) img.Save("c:\pic.jpg", System.Drawing.Imaging.ImageFormat.Jpeg) img.Dispose() ms.Close() End If End Sub But I am getting Error as "Invalid character in a Base-64 string" at line Dim b As Byte() = Convert.FromBase64String(content)

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  • Delete or comment out non-working JUnit tests?

    - by Chris Knight
    I'm currently building a CI build script for a legacy application. There are sporadic JUnit tests available and I will be integrating a JUnit execution of all tests into the CI build. However, I'm wondering what to do with the 100'ish failures I'm encountering in the non-maintained JUnit tests. Do I: 1) Comment them out as they appear to have reasonable, if unmaintained, business logic in them in the hopes that someone eventually uncomments them and fixes them 2) Delete them as its unlikely that anyone will fix them and the commented out code will only be ignored or be clutter for evermore 3) Track down those who have left this mess in my hands and whack them over the heads with the printouts of the code (which due to long-method smell will be sufficently suited to the task) while preaching the benefits of a well maintained and unit tested code base

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  • Rails AR validates_uniqueness_of against polymorphic relationship

    - by aaronrussell
    Is it posible to validate the uniqueness of a child model's attribute scoped against a polymorphic relationship? For example I have a model called field that belongs to fieldable: class Field < ActiveRecord::Base belongs_to :fieldable, :polymorphic => :true validates_uniqueness_of :name, :scope => :fieldable_id end I have several other models (Pages, Items) which have many Fields. So what I want is to validate the uniqueness of the field name against the parent model, but the problem is that occasionally a Page and an Item share the same ID number, causing the validations to fail when they shouldn't. Am I just doing this wrong or is there a better way to do this?

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  • CODE1 at SPOJ - cannot solve it

    - by VaioIsBorn
    I am trying to solve the problem Secret Code on SPOJ, and it's obviously a math problem. The full problem For those who are lazy to go and read, it's like this: a0, a1, a2, ..., an - sequence of N numbers B - a Complex Number (has both real and imaginary components) X = a0 + a1*B + a2*(B^2) + a3*(B^3) + ... + an*(B^n) So if you are given B and X, you should find a0, a1, ..an. I don't know how or where to start, because not even N is known, just X and B. The problem is not as easy as expressing a number in a base B, because B is a complex number. How can it be solved?

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  • What is a typical scenario for and end-user reports design?

    - by Sebastian
    Hello! I'm wondering what would be the typical scenario for using an end-user report designer. What I'm thinking of is to have a base report with all the columns that I can have, also with a basic view of the report (formatting, order of columns, etc.) and then let the user to change that format and order, take out or add (from the available columns) data to it, etc. Is that a common way to address what is called end-user designer for reports or I'm off track? I know it depends on the user (if it's someone that can handle SQL or not for example), but is it common to have a scenario where the user can build everthing from the sql query to the formatting? Thanks! Sebastian

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  • Procedures before checking in to source control?

    - by Mongus Pong
    I am starting to get a reputation at work as the "guy who breaks the builds". The problem is not that I am writing dodgy code, but when it comes to checking my fixes back into source control, it all goes wrong. I am regularly doing stupid things like : forgetting to add new files accidentally checking in code for a half fixed bug along with another bug fix forgetting to save the files in VS before checking them in I need to develop some habits / tools to stop this. What do you regularly do to ensure the code you check in is correct and is what needs to go in? Edit I forgot to mention that things can get pretty chaotic in this place. I quite often have two or three things that Im working on in the same code base at any one time. When I check in I will only really want to check in one of those things.

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