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  • How can I use EF in windows forms to insert new data ?

    - by Al0NE
    Hi Maybe it's simple question, but it's my first time with EF + win app so ... I'm building win app with EF by adding edmx as data source then drag and drop the tables to get navigator and binding source .. when I press the add button in the navigator it allows me to enter new data but when I save the context I get NULL data for all fields except the auto increment field ( the ID field ).... What should I do to save many entries ...? DO I have to loop over all the entities in the binding source and add them to the context ?? Thanx in advance Update: I forgot to say that when i use data grid view it adds the items correctly but with "Details" it didn't ..

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  • hibernate transaction safety (with, without JBoss)

    - by Andy Nuss
    Hi, I am currently using just Hibernate and tomcat (no JBoss), and have hibernate transactions which I'm not clear on what transaction safety level I'm actually using, especially for those which read and get values and then update them). Thus I might be getting dirty reads? So I'm going to start having to study my transactions that require non-dirty reads, and make sure that (1) hibernate controls the transaction safety level of those transactions properly, and (2) be able to still have those transactions where dirty reads are ok. Do I need to install Hibernate with JBoss to control transaction safety levels? If so, what's the easiest way to do this without dramatically changing my application to use the J2EE apis, as I am currently using the basic Hibernate apis. Or better, can I get JTA control with Hibernate without using JBoss? Andy

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  • How can I avoid setting some columns if others haven't changed, when working with Linq To SQL?

    - by Patrick Szalapski
    In LINQ to SQL, I want to avoid setting some columns if others haven't changed? Say I have dim row = (From c in dataContext.Customers Where c.Id = 1234 Select c).Single() row.Name = "Example" ' line 3 dataContext.SubmitChanges() ' line 4 Great, so LINQ to SQL fetches a row, sets the name to "Example" in memory, and generates an update SQL query only when necessary--that is, no SQL will be generated if the customer's name was already "Example". So suppose on line 3, I want to detect if row has changed, and if so, set row.UpdateDate = DateTime.Now. If row has not changed, I don't want to set row.UpdateDate so that no SQL is generated. Is there any good way to do this?

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  • Strange problem with ie6 messing up layout, and fixing byitself some time after loading

    - by 0al0
    We have a big ie6 layout problem with a newly launched website: in the header in our homepage, we have a coda-slider, and apparently its messing upt the wole layout of the front page. I have been looking at float and height problems but cannot seem to solve it. Also, the most strange part is that if you wait a while after loading, the layout "fixes itself". Help! The url is the following (without the spaces, sorry) w w w . r e - c r e a r t . c o m Edit: update, it sounds crazy, but if you press control and use the mouse wheel (as if you were zooming in /out in a modern browser, although ie6 doesnt do that) the layout fixes as well. Please help, I am going crazy.

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  • C++: FFMPEG and SDL resources

    - by advs89
    I'm looking for resources (preferably books, but websites are fine too) for using FFMPEG and/or SDL with C++. Stuff I'd like to be able to do (eventually): Decode and play videos in realtime to a QT widget (the QT part isn't a problem) Overlay text and images on the video (in realtime) Loop video Cross-fade from one video to another (in realtime) Some kind of DVD functionality LIVE sources? (i.e. webcam, stream, etc.) So far I've looked at (and consider helpful) the following resources: FFMPEG and SDL Tutorial by Dranger (extremely helpful) StackOverflow: ffmpeg C API documentation/tutorial (not a duplicate, btw) Sample code bundled with FFMPEG libraries (I'll try and update this list with anything helpful below) Thanks for any help... Also: Operating System is Windows (but maybe one day cross-platform) Also 2: Resources using alternatives are welcome too... i.e. DirectShow, VFW, etc.

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  • Why does XCode keep downloading old deleted profiles and duplicates of the same profile?

    - by Piepants
    If I refresh the profiles in XCode it: a) Pulls down ones that no longer exist. Profiles that have been deleted from the portal and are no longer there b) Pulls down multiple copies of the same profile. If I add a new device and then update the profiles to include that new device. Then XCode will pull down the new updated profile but also the same profile with an older date (even though the portal only shows one, the latest). If I delete them them XCode they re-appear. I'm having problems getting push notifications to work with an ad-hoc distrubtion and so want to ensure I am build with the latest profiles. This behaviour of XCode is irritating at least, and possibly the source of my problems at worst.

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  • how to call a function to refresh GUI

    - by SWKK
    Hi Guys, I am refactoring some code to decouple GUI from some state. #include <StateObject> Class GUI{ ... StateObject A; void doSomething() { A->hullaballoo();} **void ReFreshMyGui() { //take state A and redraw }** }; State object is being shared by multiple classes to update the state but this Gui Object specializes in displaying the state. So I would like to call the Refresh function via StateObject whenever its modified. I am not sure how or if signals will provide the solution. Any hints?

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  • Why does cisco IOS require domain-name to be set before SSH keys can be generated?

    - by Daniel Papasian
    Is there a technical reason why IOS requires the device's domain-name to be set (via ip domain-name) before an SSH key can be generated? Is the domain-name used in any way in the generation of the key? Is there any way to force the generation of a key before the domain name is set? UPDATE: Myself (before I posted this question) and others in your answer seem to think it may be used as either a salt or a source of entropy for the key. Wouldn't the domain-name be very predictable? This doesn't seem like a suitable source of entropy.

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  • PHP to C# and Vice versa

    - by Daniel Sh.
    I'm in this project: A web page that's gonna be used by the front-end company people to query and update data from a SQL DB. I'm working with visual studio and the code behind (C#) is almost done, so the interactions between SQL and C# and ok. My original idea was to work with ASP.NET which is familiar to me, but that's not gonna be possible. I have to switch to PHP. So, today is my first day learning PHP, checking http://php.net/manual/en/index.php and a lot of things seem quite similar to ASP.NET so I guess it won't be that hard. Anyways, some questions popped up quite fast as I wanted to script something else than a "hello world" . Is there an easy way to get/send C# variables from my class using a php page? I've read soemthing about using XML in order to do so, but still I'm scratching my head, is there another, easier, way to do this?

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  • What notes should I be taking, if any, at the beginning of a project?

    - by Justin R.
    I was recently asked by a Team Leader (not mine) if I would be willing to undertake a programming project. The members of his team are currently pre-occupied with other more important projects. I graduated college two years ago, and up until now programming has only been a hobby of mine. Recently I decided that I would like to pursue a career in software development. I accepted his offer so that I can gain some real-world experience and start building a portfolio. In about an hour I'm scheduled to meet with the Team Leader to discuss the details of what he needs. From a short e-mail exchange with him, I know that the base project is to update an existing ASP.NET form—but I also think there's more to it than that. Considering that I'd like to eventually put this project in a portfolio, what kinds of notes should I take at the meeting?

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  • How to create a repository workspace which contains all of the components of a stream using scm tool?

    - by user470184
    I'm attempting to automate the updating of a file in a stream using 'scm' Here is how I think it should work : Login to the repository as current user (me) Create a new repository workspace which contains all of the components of a given Stream Load the components of the newly created workspace Update the file I'm on point 2. Reading about the 'create workspace' doc on http://pic.dhe.ibm.com/infocenter/rtc/v1r0m0/index.jsp?topic=%2Fcom.ibm.team.scm.doc%2Ftopics%2Fc_scm_cli.html it does'nt mention how to create a new workspace which contains all of the components of a given stream. So how can I implement point 2 ? Any comments on my methodolgy if can be improved upon also appreciated.

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  • How to insert variables in R twitteR updates?

    - by analyticsPierce
    Hello, I am using the twitteR package in R to update my twitter status with results from analysis. The static tweet function works: library(twitteR) sess = initSession('username','password') tweet = tweet('I am a tweet', sess) However, when I add a variable to display some specific results I get an error. library(twitteR) sess = initSession('username','password') res = c(3,5,8) msg = cat('Results are: ', res, ', that is nice right?') tweet = tweet(msg, sess) Results in: Error in twFromJSON(rawToChar(out)) : Error: Client must provide a 'status' parameter with a value. Any suggestions are appreciated.

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  • Are C/C++/ObjC/JS Apple's only allowed langauges for iPhone development?

    - by fbrereto
    According to this post on Daring Fireball a new iPhone SDK Agreement release in conjunction with the iPhone OS 4.0 announcement today specifically bans any iPhone application not implemented in C, C++ Objective-C or JavaScript. The clear impact here is to the wide array of programs written in languages other than those. Is that your reading of the clause in the new agreement as well? Update: Here is the clause as printed on Daring Fireball: 3.3.1 — Applications may only use Documented APIs in the manner prescribed by Apple and must not use or call any private APIs. Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine, and only code written in C, C++, and Objective-C may compile and directly link against the Documented APIs (e.g., Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited).

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  • Does Google appengine cache external requests?

    - by Andy Hume
    I have a very simple application running on appengine that requests a web page every five minutes and parses for a specific piece of data. Everything works fine except that the response I get back from the external request (using urllib2) doesn't reflect the latest changes to the page. Sometimes it takes a few minutes to get the latest, sometimes over an hour. Is there a transparent layer of caching that appengine puts in place? Or is there something else I am missing here? I've looked at the caching headers of the requested page and there is no Expires or LastModified's sent. Update: Sometimes, it will get the new version of the page for a number of requests and then randomly later get an old out of date version.

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  • Delay the display of image loaded using jquery + ajax

    - by niczoom
    I am using the following code : $.ajax({ url: "pgiproxy.php", data: ({ data : $("#formdata").serialize(), mode : "graph"}), success: function(result){ var temp = $('<div/>').html(result); var val = temp.find('center').html(); $('#BFX').html(val); }, error: function(){ $("#error").html("ERROR !!!"); } }); The 'result' from the ajax call to 'pgiproxy.php' is a whole web page (returned as a string), this is then converted to a jQuery object and stored in 'var'. I then extract the data I need (a .gif image) using .find() which is stored in 'val'. This image is then inserted into a #BFX div for display. My problem is every successive time I click my button to update this image it shows the image loading from top to bottom as it is reading it in from the web. Is there a way to only display this image once it has fully loaded so the user doesnt see the image loading and only sees the image change instantly.

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  • SQL Server 2000, how to automate import data from excel

    - by Stan
    Say the source data comes in excel format, below is how I import the data. Converting to csv format via MS Excel Roughly find bad rows/columns by inspecting backup the table that needs to be updated in SQL Query Analyzer truncate the table (may need to drop foreign key constraint as well) import data from the revised csv file in SQL Server Enterprise Manager If there's an error like duplicate columns, I need to check the original csv and remove them I was wondering how to make this procedure more effecient in every step? I have some idea but not complete. For step 2&6, using scripts that can check automatically and print out all error row/column data. So it's easier to remove all errors once. For step 3&5, is there any way to automatically update the table without manually go through the importing steps? Could the community advise, please? Thanks.

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  • messages stuck permanently in session

    - by Tim Whitlock
    I am getting Drupal messages stuck permanently in session, so that after being displayed they are not cleared. The unsetting code in function drupal_get_messages in bootstrap.inc is firing - It's as if the session is sleeping (i.e. serializing to disk) before the messages array is cleared. Have you witnessed such a thing? UPDATE The call that commits the session starts from drupal_page_footer at the bottom of index.php - for some reason this is executing twice per request! once with the emptied messages and then again with the messages back in the array.

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  • in jqgrid, how can i have the editform disappear after submit

    - by leora
    right now, when i click submit it sends a message to the server and updates the databased and refreshes the screen but it keeps the edit form popup on the screen. Is there anyway to have it disappear once the submit is complete. its kind of annoying because its a little unclear that you are done because the form just sits there (even through the grid has refreshed) i have closeAfterEdit and closeAfterAdd set to true but it doesn't seem to do anything. jQuery("#grid").navGrid("#pager", { }, { height: 380, width: 500, reloadAfterSubmit: true, closeAfterEdit: true, url: siteRoot + controller + "/Update" }, { height: 380, width: 500, reloadAfterSubmit: true, closeAfterAdd: true, url: siteRoot + controller + "/Add" }, { reloadAfterSubmit: true, url: siteRoot + controller + "/Delete" }, { multipleSearch: true }

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  • Rails - Why is my custom validation being triggered for only a build command.

    - by adam
    I have a sentence and correction model with a has_one and belongs_to relationship respectively. For some reason when I do def create @sentence = Sentence.find(params[:sentence_id]) @correction = @sentence.build_correction(params[:correction]) a custom validation I wrote for Correction is being called at the build_correction point. the validation is below class Correction < ActiveRecord::Base attr_accessible :text, :sentence_id, :user_id belongs_to :sentence belongs_to :user validate :correction_is_different_than_sentence def correction_is_different_than_sentence errors.add(:text, "can't be the same as the original sentence.") if (text == self.sentence.text) end the problem is for some reason on validation the correction object doesn't have the sentence id set (despite I used the build_correction method) and so it complains "you have nil object .... while executing nil.text" in the if clause in the validation above. So my question is why is the validation occuring for a build command, i thought it only triggers on a create or update. And why isnt the sentence_id getting set?

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  • Instant file sharing between users in PHP

    - by Skyfe
    Hi there, Working on a rather complex system in which users can directly exchange files with eachother from the website. However is any of these things possible: EITHER * Have another user download a file which is still being uploaded by another user ( in progress ) OR * Make a user automaticly ( instant ) download a file from another users PC through our website OR * Make a user automaticly (instant) download a file from our server ( so it's directly downloaded to the users pc and the progress shown on our website of the download progress, without the normal internet explorer dialog downloading the file or firefox ). Thank you very much in advanced, Best Regards, Webcodez.net. UPDATE: an example would be MSN's file sharing but then through a website instead of application.

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  • How to Return A File and a strongly Typed data at the same time?

    - by chobo2
    Hi I am using asp.net mvc 1.0 and I want to return a XML file but I also want to return a strongly typed data back so I can update some fields. Like the XML file will contain users who failed to be inserted into the database. So I want that to appear as a dialog save box what asp.net mvc return file() would do. However I also want to return on the page like values like how many users failed to be added, how many users where added, etc. So I want to use scafolding with the class file I want to pass it along. If this was a view I could pass it along as an object model but I don't see a parameter for that in File(). I also don't want to save the xml file onto the harddrive I want to do it through memory. So have a link that would display on the page to download the file and show the the data I want would not be desired.

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  • When and How to Delete temporary uploaded but uncommitted files in ASP.NET

    - by slowlycooked
    I'm using EO Ajax toolkits for upload files, the file is uploaded to server. when user click save then it will update the database for what been uploaded or changed. Now i need a clean up process that when user uploaded a file to server, but then close his/her browser before click the save button. in this case how should i programe so that the file user just uploaded is deleted, because it's now useless and not assosiated with any database. thanks. maybe i should upload all files to a temp folder, only when user click saver the file can be moved to target folder, at each session end the temp folder is get deleted.

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  • What to do with twitter oauth token once retreived?

    - by mcintyre321
    I'm writing a web app that will use twitter as its primary log on method. I've written code which gets the oauth token back from Twitter. My plan is now to Find the entry in my Users table for the twitter username retreived using the token, or create the entry if necessary Update the Users.TwitterOAuthToken column with the new OAuth token Create a permanent cookie with a random guid on the site and insert a record into my UserCookies table matching Cookie to User when a request comes in I will look for the browser cookie id in the UserCookies table, then use that to figure out the user, and make twitter requests on their behalf Write the oauth token into some pages as a js variable so that javascript can make requests on behalf of the user If the user clears his/her cookies the user will have to log in again to twitter Is this the correct process? Have I created any massive security holes? thanks!

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  • How to tell if a user updated my app or installed a new one

    - by user310318
    I need a way to tell if the app being used by a user is a fresh new install (new user), or was a pre-existing user who updated. The previous app version did not track UDID's, and didn't save anything (it just ran as a simple app). Is there a way for an update to tell if the user previously installed the app? Even if that app didn't save anything into the documents folder, and the app didnt communicate with a server (UDID post)? (id like to be able to offer bonus features to my existing loyal users who had already installed the original app and updated) thanks!!

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