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  • EntityFramework how to Override properties

    - by plotnick
    I've just started using EF in VS2010. That thing is just amazin'. I frankly can't understand something. For example I have EntityType with property, they generated from database structure. Now, I have to simply override that property in my code. I don't need to save value of the property back into DB, but everytime when it gets read from DB it should be substituted with run-time calculated value. Of course I can create derived class based on my EntityType but I've tried and found kinda difficulties, I'm not sure this is kinda right way to do. Anyway even when I try to change the whole EntityType to Abstract, damn Visual Studio doesn't want to validate that and says something like: "Error 2078: The EntityType 'AssetsModel.Asset' is Abstract and can be mapped only using IsTypeOf." "Error 2063: At least one property must be mapped in the set mapping for 'Assets'" What the hell is this suppose to mean I dunno.. Any ideas gentlemen?

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  • Android DownloadManager - few questions

    - by ChrisR
    I have a few questions about the Android browser download manager . Does it support multiple downloads at the same time? From the code it looks like it does. What's advantage of using HTTPRequest over URL/URLConnection to download files? 3.The download manager opens and closes connection for each download. Is it the right thing to do? Or is it better to use the same connection for for all the download requests(by changing the required parameters) and then clse the connection?

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  • How do i setup Login module in my web application? in Java?

    - by Nitesh Panchal
    Hello, I am making web application in java. My username and passwords as well as roles are stored in database. I could use jdbcRealm, but it forces me to use a specific structure which i dont have in my project. So, how do i do it? I am using Glassfish v3.0 with Netbeans 6.8. I read few tutorials about custom LoginModule but i am not getting anything out of it. How do you all people do it practically in your projects? If you can show me code of custom LoginModule then also it will do. Waiting for replies.

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  • Date/time query from Access table ( last month)

    - by chupeman
    Hello, I am using the query builder from Visual Studio 2008 to extract data from an Access mdb ( 2003), but I can't make it to work with a datetime field. When I run it with a third party query app I have works fine, but when I try to implement it into visual studio I can't do it. What is the correct way to extract last month data? This is what I have: SELECT [Datos].[ID], [Datos].[E-mail Address], [Datos].[ZIP/Postal Code], [Datos].[Store], [Datos].[date], [Datos].[gender], [Datos].[age] FROM [Datos] WHERE ([Datos].[date] =<|Last month|>) Any help is appreciated. Thank you

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  • Crystal Reports using ASP.Net

    - by Dattu
    I am new to the ASP.net and crystal reports.. I created a report using crystal reports and i used 3 parameters as Division,Month & Year. These parameters values will come from database using dropdown lists.. after selecting the parameters, report button clicked the report should come.. Report is coming but the values what ever I taken are not displaying in the report. Please give me solution for this and if code also provided it will be appreciated. Thanks in Advance. Dattu

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  • C programing some errors :(

    - by Pedro
    Hi...this is a little code that i'm doing, but i have some errors...:S Hi have a txt file and i want to "convert to xml", but the program must know what is comments, and must organize... txt file: /* Licenciaturas na ESTG-IPVC 2009 – v1.1*/ - Info, <N Alunos> <hr>--------------------------------------------------- 3 <hr>--------------------------------------------------- - data, <course><Number>;<name>;<email> - disciplinas, <n disciplines>;<note>;[<note>;] </hr>--------------------------------------------------- LEI;7671;Name name name;[email protected]; 9;8;12;9;12;11;6;15;7;11; LTCGM;6567;nam1 nam2 nam3;[email protected]; 6;13;14;12;11;16;14; LEI;7701;xxxxx xxxx xxxx;[email protected]; 8;13;11;7;14;12;11;16;14; My code: int main(int argc, char *argv[]) { char first[60];//array char comment[60];//array char nome_int[60];//array char total[60];//array char course[60];//array int i; char notas[60]; char *number, *name, *mail, *total_disci; int total_cad; char disciplines[60]; printf("Int. the name of the file to convert\n"); scanf("%s",&nome_int); FILE *fp = fopen(nome_int, "r"); //open file FILE *conver = fopen("conver.xml","w");// opne output FILE *coment = fopen("coment.txt","w"); if (fp == NULL) { printf("File not found\n"); exit(1); } else { fgets(first, 60,fp); fputs(first,coment); while (!(feof(fp))){ fgets(first, 60, fp); if (first[0] == '-'){ fputs(first,coment); } for(i=1;fscanf(fp,"%s",total)!=-5;i++){ if(i==2){ printf("Total %s",total);//here the program stops } } fgets(course,60,fp); if(course[0]=='L'){ number = strchr(course, ';');//here course is an array but must be an appointer, what can i do? *number = '\0'; number++; name = strchr(number, ';'); *name = '\0'; name++; mail= strchr(name, ';'); *mail = '\0'; mail++; char *curso1; total_cad=atoi(total_disci); printf("Course: %s\n",course); printf("Number: %s\n",number); printf("Name: %s\n",name); printf("e-mail: %s\n",mail); } fgets(disciplines,60,fp);//here crash total_disci= strchr(mail, ';'); *total_disci = '\n'; total_disci++; printf("Total disciplines: %d\n",total_cad); } } fclose(fp); fclose(coment); fclose(conver); system("PAUSE"); return 0; } the convert file must be like this: <xml> <list_courses> <course> <sigla>LEI</sigla> <NAlunos>2</NAlunos> <list_students> <students> <number>7671</number> <name>name name name</name> <email>[email protected]</email> <stat>disaproved</stat> <media_notes>10</media_notes> <biggest_note>15</biggest_note> <small_nota>6</small_nota> </students> </list_students> </course> </list_courses> </xml> _______________________________________- now separated by only comment on what is what and converted to xml. also had to do was impressed that the program could name, email address, number, etc. .. here the main errors do not want to do for me, just want to see the errors, I spent the whole day right back from them and nothing ... someone who can help, please do it :)

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  • How do I release an object allocated in a different AutoReleasePool ?

    - by ajcaruana
    Hi, I have a problem with the memory management in Objective-C. Say I have a method that allocates an object and stores the reference to this object as a member of the class. If I run through the same function a second time, I need to release this first object before creating a new one to replace it. Supposing that the first line of the function is: NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; This means that a different auto-release pool will be in place. The code to allocate the object is as follows: if (m_object != nil) [m_object release]; m_object = [[MyClass alloc] init]; [m_object retain]; The problem is that the program crashes when running the last line of the method: [pool release]; What am I doing wrong ? How can I fix this ? Regards Alan

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  • How can I set two values in HtmlInput control

    - by Homam
    Hi, I have an HtmlInputText in an EditItemTemplate in a DataGrid, This control is bound with a value from the SqlDataSource I want to set in this control two values the JOB_CODE_ID and the JOB_CODE instead of just JOB_CODE. I used to use Tag in the WinForms to set values such this, but in I don't know similar way in ASP.Net. In my situation I can't use a hidden control to save the JOB_CODE_ID there, Is there any way to set two values in a HtmlInputText control ? The code: <input type="text" ID="JOB_CODETextBox" runat="server" value='<%# Bind("JOB_CODE") %>' /> Thanks in advance.

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  • Best and shortest books on C++/STL/C#/J2SE to prepare for job inteview/tests

    - by Nerd
    I am a software developer with 10+ years commercial experience, I am comfortable with nearly all of imperative languages. But I realized that most of employers prefer not candidates who is able to deliver good software but those who is trained to answer questions like "what are ten differences between pointers and references in C++" or "what this messy code fragment will print". Last time I have read a book on C++ 15 years ago in secondary school and yes, that was Bjarne Stroustrup. But today I need something quick, without long philosophical explanations about polymorphism etc but with focus to silly interview tests. So, can you recommend any short and effective books to refresh my theoretical knowledge? Thank you.

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  • Precision problems of real numbers in Fortran

    - by saladoil
    I've been trying to use Fortran for my research project, with the GNU Fortran compiler (gfortran), latest version, but I've been encountering some problems in the way it processes real numbers. If you have for example the code: program test implicit none real :: y = 23.234, z z = y * 100000 write(*,*) y, z end program You'll get as output: 23.23999 2323400.0. I find this really strange. Can someone tell me what's exactly happening here? Looking at z I can see that y does retain its precision, so for calculations that shouldn't be a problem I suppose. But why is the output of y not exactly the same as the value that I've specified, and what can I do to make it exactly the same?

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  • How to get data in the servlet send via dojo.xhrPost

    - by snell
    > var xhrArgs = { > url: '/mum/proxy/http/localhost:8080/DemoProject/MyServlet', > postData:' MyDataToBeSend', > handleAs: 'text', > load: function(data) { }, > error: function(error) {alert(error);}}; var ret = > dojo.xhrGet(xhrArgs); Hi All, I have written the above code in Javascript to send data to a servlet. But I am not understanding how to get the postData in the servlet.

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  • Need help with displaying the message correctly in the pole display always starting at the beginning

    - by SA
    Hi, I am using an HP RS232 pole display with the following setting: Char type: USA/Europe (default) Command mode: EPSON (default) Baud rate: 9600, n , 8, 1 (default?) Passthru None (Default) Here's the code using System.IO.Ports; private SerialPort port; port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.Handshake = Handshake.None; Port.WriteLine("Welocome to something something"); It has 2 lines consisting of 20 characters each with a total of 40 characters. I have no control how and where the characters get displayed. I would like it to always begin on line 1 position 1 but as I said earlier how would I be able to do that. The same program if I run again and again it moves a character to the left. I have set it to accept ASCII char set and so I am able to type as is visble in the Writeline message

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  • Question About id and Delegate Usage in Obj-C

    - by Stunner
    Ey guys, I am wondering what the following line of code is doing: @property (assign, nonatomic) id <CoursePlannerDelegate> delegate; Namely I am wondering about this portion of the line: id <CoursePlannerDelegate> delegate; It also shows up in other places: @interface CategoryAddViewController : UIViewController { UITextField *nameField, *weightField; double maxWeight; //The maximum weight that can be allocated to this Category (max value of 100) id <CategoryAddDelegate> delegate; //A Course Planner TVC } Any help appreciated, thanks in advance!

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  • MVC framework for huge JEE application

    - by chaKa
    Which MVC-framework is the best option (performance/ease of development) for a web application, that will have + 2 million visits per week. Basically the site is a search engine,but also there will be large amounts of xml parsing, and high db traffic. We are using Java, over Jboss 4.2.3x, with PG as DB, and Solr for the searches. We were thinking on code JSPs with taglibs, and Servlets, but we were feeling like there would be a better alternative, which don't know yet, as we are starting on the Java Web applications world. Any opinions, and shares of your experience will be appreciated! Thanks in advance!

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  • Bind value between control in different view -- WPF / MVVM

    - by Tchoupi
    Hello! in my MVVM application (in wpf) i have two view and I want to bind the context of my label on my textbox value (in the other view) SelectorView.xaml contain this control: <TextBox x:Name="tbArt" value="XX"/> DescriptionView.xaml contain this control: <label context="{binding on the tbArt value????}"> Is that possible directly without going in code behing and viewmodels ? Will the label be refresh automatically ? Thanks !

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  • How can one use multi threading in php applications

    - by Steve Obbayi
    Is there a realistic way of implementing a multi-threaded model in php whether truly or just simulating it. Some time back it was suggested that you can force the operating system to load another instance of the php executable and handle other simultaneous processes. The problem with this is that when the php code finished executing the php instance remains in memory because there is no way to kill it from within php. so if you are simulating several threads you can imagine whats going to happen. So am still looking for a way multi-threading can be done or simulated effectively from within php. Any ideas?

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  • Altering IFrame src content

    - by Nick
    I dont believe this can be done, but is it possible to alter the content of an iframe that is rendered via a src. The 3rd party compiled ASP.Net control (Telerik RadEditor .Net 2 version) I use has an iframe in part of its rendered code and does not contain a doctype and it is causing problems in IE8 with certain elements. As it is compiled, I can not add it in the source. I was wondering if it is possible to add it in another way? I have tried multiple things in jquery such as: $(element).html().prepend("doc type here"); $(element).html("doctype here" + $(element).html()); and all other kinds of dodgy work.

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  • jQuery show/hide for FAQ using the next() function

    - by jon_brockman
    Maybe it's because it's Friday but I'm stuck on a simple problem. I'm building a FAQ page where a user clicks on a question, revealing the answer beneath it. I'm trying to get the next() function to just grab the next instance of an "answer" div but, despite not getting any JS errors, the hidden div isn't showing. Here's the code: .answer { display:none; } $("a.question").click(function(){ $(this).next(".answer").toggle(); }); <a href="#" class="question">Queston 1</a> <div class="answer">Answer 1</div> <a href="#" class="question">Queston 2</a> <div class="answer">Answer 2</div>

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  • TextBox loses text when InvokeRequired == false

    - by Tom
    This is modified code I found on this site. When appending text to a TextBox and InvoveRequired is false the text will display in the box but the next time the function is called and InvokeRequired is true the text string placed by the first call is lost (""). Multiple calls when InvokeRequired is true work as expected. comBox is a type TextBox with multline = true. Any help would be appreciated. public void LogComText(string comText, bool newline) { if (comBox.InvokeRequired) { comBox.BeginInvoke(new Action(delegate { LogComText(comText, newline); })); return; } comBox.AppendText(comText); if (newline) comBox.AppendText(Environment.NewLine); }

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  • R problems using rpart with 4000 records and 13 attributes

    - by josh
    I have attempted to email the author of this package without success, just wondering if anybody else has experienced this. I am having an using rpart on 4000 rows of data with 13 attributes. I can run the same test on 300 rows of the same data with no issue. When I run on 4000 rows, Rgui.exe runs consistently at 50% cpu and the UI hangs.... it will stay like this for at least 4-5hours if I let it run, and never exit or become responsive. here is the code I am using both on the 300 and 4000 size subset : train<-read.csv("input.csv",header=T) y<-train[,18] x<-train[,3:17] library(rpart) fit<-rpart(y~.,x) Is this a known limitation of rpart, am I doing something wrong? potential workarounds? any assistance appreciated

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  • remember passowrd works in ff but not in ie and chrome

    - by jasperdejong
    Hi, It seems that my html login form support remember password in ff but not in ie and chrome. Can anybody tell me why? Here's the code: <form name="login_form" id="login_form" action="" method="POST"> <div class="login_line">name<input name="user_name" id="user_name_id" size="16" maxlength="16" value="" type="text"></div> <div class="login_line">password<input name="password" id="password_id" size="16" maxlength="16" type="password"></div> <div class="login_line">&nbsp;<input class="icon icon_accept" value="login" onclick="javascript:handleFunction('action_login', document.getElementById('user_name_id').value, document.getElementById('password_id').value); return false;" type="submit"></div> </form> <!-- login_form -->

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  • How to reduce the lag time when using jquery to modify css onload

    - by Josh
    I have a jquery function that is called on $(document).ready that modifies the css of a Business Intelligence dashboard. I had to use jquery to make the adjustments because I do not have access to the source code of the BI tool. What happens is when the page loads, I run through the tab navigation and change the colors of the tabs based on certain requirements (which is basically dependent on the text of the tab). The issue I am facing is that there is a small lag time from when the page initially loads to when the jquery updates have been made to the page. Is there a way to reduce this lag time?

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  • C# (With .NET & Visual Studio) WebForms - How can I get the title of a page ..?

    - by Ashley Davies
    Prety long question; How can I do the following in C#: Open a webpage (Prefferably not visible) Check whether the page redirects to a different page (Site is down, 404, etc.) Check if the title is not equal to a said string Then seperately, (They need to click a confirm button) open their browser, and go to the adress of the first (It'll be the only one) hyperlink on the site. I literally have been looking on google for ages and haven't found anything similar to what I need. Whether you give me a link to a site with a tutorial on this area of programming or actual source code doesn't make a difference to me.

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  • Does C++ require a destructor call for each placement new?

    - by Josh Haberman
    I understand that placement new calls are usually matched with explicit calls to the destructor. My question is: if I have no need for a destructor (no code to put there, and no member variables that have destructors) can I safely skip the explicit destructor call? Here is my use case: I want to write C++ bindings for a C API. In the C API many objects are accessible only by pointer. Instead of creating a wrapper object that contains a single pointer (which is wasteful and semantically confusing). I want to use placement new to construct an object at the address of the C object. The C++ object will do nothing in its constructor or destructor, and its methods will do nothing but delegate to the C methods. The C++ object will contain no virtual methods. I have two parts to this question. Is there any reason why this idea will not work in practice on any production compiler? Does this technically violate the C++ language spec?

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  • How do detect that transaction has already been started?

    - by xelurg
    I am using Zend_Db to insert some data inside a transaction. My function starts a transaction and then calls another method that also attempts to start a transaction and of course fails(I am using MySQL5). So, the question is - how do I detect that transaction has already been started? Here is a sample bit of code: try { Zend_Registry::get('database')->beginTransaction(); $totals = self::calculateTotals($Cart); $PaymentInstrument = new PaymentInstrument; $PaymentInstrument->create(); $PaymentInstrument->validate(); $PaymentInstrument->save(); Zend_Registry::get('database')->commit(); return true; } catch(Zend_Exception $e) { Bootstrap::$Log->err($e->getMessage()); Zend_Registry::get('database')->rollBack(); return false; } Inside PaymentInstrument::create there is another beginTransaction statement that produces the exception that says that transaction has already been started.

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