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  • C#: Fill DataGridView From Anonymous Linq Query

    - by mdvaldosta
    // From my form BindingSource bs = new BindingSource(); private void fillStudentGrid() { bs.DataSource = Admin.GetStudents(); dgViewStudents.DataSource = bs; } // From the Admin class public static List<Student> GetStudents() { DojoDBDataContext conn = new DojoDBDataContext(); var query = (from s in conn.Students select new Student { ID = s.ID, FirstName = s.FirstName, LastName = s.LastName, Belt = s.Belt }).ToList(); return query; } I'm trying to fill a datagridview control in Winforms, and I only want a few of the values. The code compiles, but throws a runtime error: Explicit construction of entity type 'DojoManagement.Student' in query is not allowed. Is there a way to get it working in this manner?

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  • How to render a partial and and a javascript file in the same time in Rails ?

    - by master2004
    Hi. My main intention is to keep the functionality independent form the Javascript, to have it gracefully degradable. Maybe I am trying to go where I want the wrong way but the main idea is: there are some jQuery UI tabs and when the user presses a link, a new tab is added corresponding to that action $("#tabs").tabs('add', "/groups", "My Groups"); the controller identifies the AJAX request and renders only the partial for that tab if request.xhr? render :partial => "index_tab" end at this point I would like the Javascript file associated with the /groups/index action to be executed as well, meaning the index.js.erb file in the groups folder. because of the "only one render" rule I couldn't think of a nice way to do it and I am in need of a fast solution. Thank you for any suggestions you might have.

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  • Setting winforms ToolStripMenuItem ShortcutKeys to numpad key does not work

    - by Axarydax
    We have the ability to define ShortcutKeys for WinForms application menu items. That way I can tell a menu item File-Save to have a shortcut key Ctrl+S and the menu item's handler is "magically" executed after pressing Ctrl+S. The trouble is with the numeric keypad keys, the ShortcutKey property does not accept them (I don't understand how are they different from the other acceptable keys. MSDN states that the property accepts type System.Windows.Forms.Keys (One of the Keys values. The default is None.); and an InvalidEnumArgumentException would be thrown when the parameter is not one of Keys values. But for example Keys.Divide IS one of Keys values, and yet it can't be used. So how can I set a menu item to have a shortcut for Numpad * or Numpad +? Do I need to handle the key in Form's ProcessCmdKey event? Thanks

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  • [Silverlight, Navigation] Layout of elements added to a tabcontrol on a different navigation page wr

    - by sinni800
    Hello, I am developing a Silverlight client using the provided navigation template for an imageboard I developed. I have a "search" tab which lists all searches for tags which were executed. I also have a show post tab which shows (also in tab-form) posts, opened from the search tab. When I open a post from the search page, it instanciates a new control (of type UserControl) and inserts this into the ShowPost page's tabcontrol. When I switch (or get switched) to the Show Post view the layout is all messed up. The UserControl inside the tab does not stretch in the tab. When I switch tabs back and forth this is strangely fixed. The reason seems to be that the user control gets created there but has no layout to "fit to" until said layout is opened, which is too late then. You can see it here: http://aspbooru.tk/Silverlight/UI.aspx Thank you in advance...

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  • ibatis isNotEmpty with multiple variables

    - by hibernate
    Suppose I have a massive table called inactiveUsers and a search form. I want to conditionally join the inactiveUsers table if any user related characteristic is chosen (address, name, phoneNumber, etc...). Is there any way to do this without the following: <isNotEmpty property="address">JOIN inactiveUsers</isNotEmpty> <isNotEmpty property="phoneNumber">JOIN inactiveUsers</isNotEmpty> <isNotEmpty property="name">JOIN inactiveUsers</isNotEmpty> and so on for another 10-20 isNotEmpty clauses. I would like to do something like: <isAnyNotEmpty properties="address, phoneNumber, name, ....">JOIN inactiveUsers</isNotEmpty> Is this possible with ibatis? If so, how?

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  • TCPlistener.BeginAcceptSocket - async question

    - by Mirek
    Hi, Some time ago I have payed to a programmer for doing multithread server. In the meantime I have learned C# a bit and now I think I can see the slowndown problem - I was told by that guy that nothing is processed on the main thread (Form) so it cannot be frozen..but it is. But I think that altough BeginAcceptSocket is async operation, but its callback runs on the main thread and if there is locking, thats the reason why the app freezes. Am I right? Thanks this.mTcpListener.BeginAcceptSocket(this.AcceptClient, null); protected void AcceptClient(IAsyncResult ar) { //some locking stuff }

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  • Extracting, then passing raw data into another class - How to avoid copying twice while maintaining

    - by Kache4
    Consider a class Book with a stl container of class Page. each Page holds a screenshot, like page10.jpg in raw vector<char> form. A Book is opened with a path to a zip, rar, or directory containing these screenshots, and uses respective methods of extracting the raw data, like ifstream inFile.read(buffer, size);, or unzReadCurrentFile(zipFile, buffer, size). It then calls the Page(const char* stream, int filesize) constructor. Right now, it's clear that the raw data is being copied twice. Once to extract to Book's local buffer and a second time in the Page ctor to the Page::vector<char>. Is there a way to maintain encapsulation while getting rid of the middleman buffer?

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  • Add controls dynamically on button click in asp.net mvc

    - by Ashwani K
    Hello All: I am creating an asp.net MVC application in which I want to provide a functionality to add a controls dynamically. I have a form in which there are 2 text boxes for First Name and Last name which serve as a single control. Now an user can add any number of this group of controls. I am able to add these controls on the page using java script. But I do not know how to access the values of these control when the user submits. Please help in this or suggest another approach Thanks

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  • Drawing a rectangle on a video in C#

    - by Haxed
    Hi I want to draw a rectangle on a video stream(web cam video or loaded saved video) that I have streaming on a picture box. This is a C# application and I am using EmguCV 2.1.0.0. I have been successful in displaying the video stream on the picturebox in the form. Can I use Emgucv to draw on the video or should I use something else ? Can I use Dshownet or something like that ? Thanks for taking the time to read this. Many Thanks

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  • WinForms - Localization - UI controls positions different in additional Culture

    - by binball
    Hi, I did my UI settings.Original language is English. After that I set Localizable property to True. Copied original resx file to frmMain.de-De.resx (for example). Translated all strings. Everything works. But now I would like to change positions of controls. After that changes are visible only for original/primary Culture (En). When I change Culture to de-De then UI controls are on the "old positions"(?!) Is this normal behaviour? :O I'm unable to change controls positions on my form after localization? Can someone explain me this and give some best solution. I really have to change UI design but I don't want to manual copy all translated strings again. If my description is not clear then I can post source code, just please let me know. I use VS 2008. Greetz!

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  • What is SharePoint Out of the Box?

    - by Bil Simser
    It’s always fun in the blog-o-sphere and SharePoint bloggers always keep the pot boiling. Bjorn Furuknap recently posted a blog entry titled Why Out-of-the-Box Makes No Sense in SharePoint, quickly followed up by a rebuttal by Marc Anderson on his blog. Okay, now that we have all the players and the stage what’s the big deal? Bjorn started his post saying that you don’t use “out-of-the-box” (OOTB) SharePoint because it makes no sense. I have to disagree with his premise because what he calls OOTB is basically installing SharePoint and admiring it, but not using it. In his post he lays claim that modifying say the OOTB contacts list by removing (or I suppose adding) a column, now puts you in a situation where you’re no longer using the OOTB functionality. Really? Side note. Dear Internet, please stop comparing building software to building houses. Or comparing software architecture to building architecture. Or comparing web sites to making dinner. Are you trying to dumb down something so the general masses understand it? Comparing a technical skill to a construction operation isn’t the way to do this. Last time I checked, most people don’t know how to build houses and last time I checked people reading technical SharePoint blogs are generally technical people that understand the terms you use. Putting metaphors around software development to make it easy to understand is detrimental to the goal. </rant> Okay, where were we? Right, adding columns to lists means you are no longer using the OOTB functionality. Yeah, I still don’t get it. Another statement Bjorn makes is that using the OOTB functionality kills the flexibility SharePoint has in creating exactly what you want. IMHO this really flies in the absolute face of *where* SharePoint *really* shines. For the past year or so I’ve been leaning more and more towards OOTB solutions over custom development for the simple reason that its expensive to maintain systems and code and assets. SharePoint has enabled me to do this simply by providing the tools where I can give users what they need without cracking open up Visual Studio. This might be the fact that my day job is with a regulated company and there’s more scrutiny with spending money on anything new, but frankly that should be the position of any responsible developer, architect, manager, or PM. Do you really want to throw money away because some developer tells you that you need a custom web part when perhaps with some creative thinking or expectation setting with customers you can meet the need with what you already have. The way I read Bjorn’s terminology of “out-of-the-box” is install the software and tell people to go to a website and admire the OOTB system, but don’t change it! For those that know things like WordPress, DotNetNuke, SubText, Drupal or any of those content management/blogging systems, its akin to installing the software and setting up the “Hello World” blog post or page, then staring at it like it’s useful. “Yes, we are using WordPress!”. Then not adding a new post, creating a new category, or adding an About page. Perhaps I’m wrong in my interpretation. This leads us to what is OOTB SharePoint? To many people I’ve talked to the last few hours on twitter, email, etc. it is *not* just installing software but actually using it as it was fit for purpose. What’s the purpose of SharePoint then? It has many purposes, but using the OOTB templates Microsoft has given you the ability to collaborate on projects, author/share/publish documents, create pages, track items/contacts/tasks/etc. in a multi-user web based interface, and so on. Microsoft has pretty clear definitions of these different levels of SharePoint we’re talking about and I think it’s important for everyone to know what they are and what they mean. Personalization and Administration To me, this is the OOTB experience. You install the product and then are able to do things like create new lists, sites, edit and personalize pages, create new views, etc. Basically use the platform services available to you with Windows SharePoint Services (or SharePoint Foundation in 2010) to your full advantage. No code, no special tools needed, and very little user training required. Could you take someone who has never done anything in a website or piece of software and unleash them onto a site? Probably not. However I would argue that anyone who’s configured the Outlook reading layout or applied styles to a Word document probably won’t have too much difficulty in using SharePoint OUT OF THE BOX. Customization Here’s where things might get a bit murky but to me this is where you start looking at HTML/ASPX page code through SharePoint Designer, using jQuery scripts and plugging them into Web Part Pages via a Content Editor Web Part, and generally enhancing the site. The JavaScript debate might kick in here claiming it’s no different than C#, and frankly you can totally screw a site up with jQuery on a CEWP just as easily as you can with a C# delegate control deployed to the server file system. However (again, my blog, my opinion) the customization label comes in when I need to access the server (for example creating a custom theme) or have some kind of net-new element I add to the system that wasn’t there OOTB. It’s not content (like a new list or site), it’s code and does something functional. Development Here’s were the propeller hats come on and we’re talking algorithms and unit tests and compilers oh my. Software is deployed to the server, people are writing solutions after some kind of training (perhaps), there might be some specialized tools they use to craft and deploy the solutions, there’s the possibility of exceptions being thrown, etc. There are a lot of definitions here and just like customization it might get murky (do you let non-developers build solutions using development, i.e. jQuery/C#?). In my experience, it’s much more cost effective keeping solutions under the first two umbrellas than leaping into the third one. Arguably you could say that you can’t build useful solutions without *some* kind of code (even just some simple jQuery). I think you can get a *lot* of value just from using the OOTB experience and I don’t think you’re constraining your users that much. I’m not saying Marc or Bjorn are wrong. Like Obi-Wan stated, they’re both correct “from a certain point of view”. To me, SharePoint Out of the Box makes total sense and should not be dismissed. I just don’t agree with the premise that Bjorn is basing his statements on but that’s just my opinion and his is different and never the twain shall meet.

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  • Django: UserProfile with Unique Foreign Key in Django Admin

    - by lazerscience
    Hi, I have extended Django's User Model using a custom user profile called UserExtension. It is related to User through a unique ForeignKey Relationship, which enables me to edit it in the admin in an inline form! I'm using a signal to create a new profile for every new user: def create_user_profile(sender, instance, created, **kwargs): if created: try: profile, created = UserExtension.objects.get_or_create(user=instance) except: pass post_save.connect(create_user_profile, sender=User) (as described here for example: http://stackoverflow.com/questions/44109/extending-the-user-model-with-custom-fields-in-django) The problem is, that, if I create a new user through the admin, I get an IntegritiyError on saving "column user_id is not unique". It doesnt seem that the signal is called twice, but i guess the admin is trying to save the profile AFTERWARDS? But I need the creation through signal if I create a new user in other parts of the system!

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  • umbraco tiny MCE 3 internet explorer insert link error

    - by user150946
    Hi, I have an instalation of Umbraco 4.0.2.1. In internet explorer (6 / 7) i get an error when trying to insert a link using the tiny MCE rich text editor. basicaly what happens is i can choose the node in the site i want to link to but when i click insert it reloads but the tiny MCE popup does not dissapear and i get the following page error. Line: 368 Char: 9 Error: 'the Form._SCROLLPOSITIONX.value' is null or not an object code: 0 URL: "mydev server"/umbraco/plugins/tinymce3/insertLink.aspx I dont get this problem in Firefox and i have other instalations of umbraco 4.0.2.1 in which this error does not occur. I have tried using WinMerge to comparing the code of the two instalations and they seem identical in all the places i can think would have an effect on tinyMCE ("bin", "umbraco_client\tinymce3", "umbraco\plugins\tinymce3") I am pulling my hair out over this and any help would be very much appreciated.

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  • Sourcecode for Paymentroll example in Robert C. Martin book

    - by bitbonk
    Throughout the book "Agile Principles, Patterns, and Practices in C#" by Robert C. Martin a small Paymentroll application is build. While most of the source code is printed in place, some classes are missing and some are incomplete. The book says on the firest page: The book includes many source code examples that are also available for download from the authors' Web site. Unfortunately this seems to be a lie. Unless either this is not the author's website (the book forgets to mention the authors website adress) or I am blind. Does anyone have the comlete source code for that book preferably in form of a Visual Studio project or knows where I can find it.

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  • django admin: Add a "remove file" field for Image- or FileFields

    - by w-
    I was hunting around the net for a way to easily allow users to blank out imagefield/filefields they have set in the admin. I found this http://www.djangosnippets.org/snippets/894/ What was really interesting to me here was the code posted in the comment by rfugger remove_the_file = forms.BooleanField(required=False) def save(self, *args, **kwargs): object = super(self.__class__, self).save(*args, **kwargs) if self.cleaned_data.get('remove_the_file'): object.the_file = '' return object When i try to use this in my own form I basically added this to my admin.py which already had a BlahAdmin class BlahModelForm(forms.ModelForm): class Meta: model = Blah remove_img01 = forms.BooleanField(required=False) def save(self, *args, **kwargs): object = super(self.__class__, self).save(*args, **kwargs) if self.cleaned_data.get('remove_img01'): object.img01 = '' return object when i run it I get this error maximum recursion depth exceeded while calling a Python object at this line object = super(self.__class__, self).save(*args, **kwargs) When i think about it for a bit, it seems obvious that it is just infinitely calling itself causing the error. My problem is i can't figure out what is the correct way i should be doing this. Any suggestions? thanks

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  • Outlook 2003 View Control with C#

    - by Eleasar
    I want to embed a custom c# windows form (or WPF) user control into an outlook view. I am using Outlook 2003 and Visual Studio 2008. I did download an example for Outlook 2007 here: http://blogs.msdn.com/e2eblog/archive/2008/01/09/outlook-folder-homepage-hosting-wpf-activex-and-windows-forms-controls.aspx and also here: http://msdn.microsoft.com/en-us/library/aa479345.aspx I tested it and under 2007 it is working, but for 2003 i am getting the following error when i want to open the view: Could not complete the operation due to error 80131509 I can start it from Visual Studio, it is registering the folder just fine, debugging works and all that. It creates an HTML page that contains my type as an object parameter - but the Initialize method that should be called is either not present (not shown via JS) or it has some errors. The breakpoints for RegisterSafeForScripting are also never hit - maybe related to that. Thx in advance!

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  • RadComboBox Just Freezes

    - by ProfK
    I have two examples now, my first two, where a place a RadComboBox on a web form, and populate it, but it won't drop down. I first picked this up on a big web application project, and then on a simple little web site project, for investigating this. In my sample project, it is the only control on the page besides the ScriptManager, and there are rows in the data source, and it does display the first row, but it just doesn't drop down. Any ideas on this? BTW, this is theh first time I've restored this project onto a new XP machine, where I previously was working on a Vista machine that died.

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  • Best DataMining Database

    - by Eric
    I am an ocasional Python programer who only have worked so far with MYSQL or SQLITE databases. I am the computer person for everything in a small compamy and I have been started a new project where I think it is about time to try new databases. Sales departament makes a CSV dump every week and I need to make a small scripting application that allow people form other departaments mixing the information, mostly linking the records. I have all this solved, my problem is the speed, I am using just plain text files for all this and unsurprisingly it is very slow. I thought about using mysql, but then I need installing mysql in every desktop, sqlite is easier, but it is very slow. I do not need a full relational database, just some way of play with big amounts of data in a decent time. Many thanks!

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  • lambda expression based reflection vs normal reflection

    - by bitbonk
    What is the difference between normal reflection and the reflection that can be done with lambda expressions such as this (taken form build your own MVVM): public void NotifyOfPropertyChange<TProperty>(Expression<Func<TProperty>> property) { var lambda = (LambdaExpression)property; MemberExpression memberExpression; if (lambda.Body is UnaryExpression) { var unaryExpression = (UnaryExpression)lambda.Body; memberExpression = (MemberExpression)unaryExpression.Operand; } else memberExpression = (MemberExpression)lambda.Body; NotifyOfPropertyChange(memberExpression.Member.Name); } Is the lambda based reflection just using the normal reflection APIs internally? Or is this something significantly different. What is ther perfomance difference?

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  • Handle "Cannot access a closed resource set"

    - by Philip
    I have a website with several languages in a database. From the database I use ResXResourceWriter to create my .resx files. This is working really good but sometimes I get this exception: MESSAGE: Cannot access a closed resource set. SOURCE: mscorlib FORM: QUERYSTRING: TARGETSITE: System.Object GetObject(System.String, Boolean, Boolean) STACKTRACE: at System.Resources.RuntimeResourceSet.GetObject(String key, Boolean ignoreCase, Boolean isString) at System.Resources.RuntimeResourceSet.GetString(String key, Boolean ignoreCase) at System.Resources.ResourceManager.GetString(String name, CultureInfo culture) at System.Linq.Expressions.Expression.ValidateStaticOrInstanceMethod(Expression instance, MethodInfo method) at System.Linq.Expressions.Expression.Call(Expression instance, MethodInfo method, IEnumerable`1 arguments) at System.Data.Linq.DataContext.GetMethodCall(Object instance, MethodInfo methodInfo, Object[] parameters) at System.Data.Linq.DataContext.ExecuteMethodCall(Object instance, MethodInfo methodInfo, Object[] parameters) at Business.DatabaseModelDataContext.Web_GetMostPlayedEvents(String cultureCode) at Presentation.Default.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) I don't know why this is happening or how to solve it. Does anyone know anything about this? Thanks, Philip

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  • session variables lost between pages or use same variables

    - by user222333
    Hi, Yesterday I learn many thing from you, especially from Marc and my problem was solved ( session variables lost between pages or use same variables ). But now I continue asking: I don't want to use Session ID(session.use_trans_sid = 1) between pages. But also I don't want to use same session variables for different users at same application and also I don't want lost session variables between pages for same user. Is it possible? If yes how? Thanks for everybody for any help. Best regards. I have Wamp Server(2.2.11) with PHP(5.2.9.-2). My php.ini's session settings at below: [Session] session.save_handler = files session.save_path = "c:/wamp/tmp" session.use_cookies = 0 ;session.cookie_secure = ;session.name = PHPSESSID session.auto_start = 0 session.cookie_lifetime = 0 session.cookie_path = / session.cookie_domain = session.cookie_httponly = session.serialize_handler = php session.gc_probability = 1 session.gc_divisor = 1000 session.gc_maxlifetime = 1440 session.bug_compat_42 = 0 session.bug_compat_warn = 1 session.referer_check = session.entropy_length = 0 session.entropy_file = ;session.entropy_length = 16 ;session.entropy_file = /dev/urandom session.cache_limiter = nocache session.cache_expire = 180 session.use_trans_sid = 1 session.hash_function = 0 session.hash_bits_per_character = 5 url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"

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  • How would you validate a checkbox in ASP.Net MVC 2?

    - by Scott Mayfield
    Using MVC2, I have a simple ViewModel that contains a bool field that is rendered on the view as a checkbox. I would like to validate that the user checked the box. The [Required] attribute on my ViewModel doesn't seem to do the trick. I believe this is because the unchecked checkbox form field is not actually transmitted back during the POST, and therefore the validation doesn't run on it. Is there a standard way to handle checkbox "required" validation in MVC2? or do I have to write a custom validator for it? I suspect the custom validator won't get executed either for the reason mentioned above. Am I stuck checking for it explicitly in my controller? That seems messy... Any guidance would be appreciated. Scott

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  • jqgrid scrollable dialog

    - by gurun8
    I have a jqGrid that has add/edit dialogs with a form that's longer than the dialog height but the dialog won't scroll. I've tried to add an overflow: auto style to the dialog but no effect: $("div.ui-jqdialog-content").css("overflow", "auto"); Although, if I change auto to scroll, I at least see a scrollbar but still no scrolling: $("div.ui-jqdialog-content").css("overflow", "scroll"); This at least gives me a small glimmer of hope that I'm on the right track. There doesn't seem to be any direction from the API documentation to support scrolling: http://www.trirand.com/jqgridwiki/doku.php?id=wiki:form_editing Does anyone know how to add a working scrollbar to the jqModal dialog window used by jqGrid?

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  • Client asked for internet radio on his website

    - by Ali
    Hi guys, I have a freelance job for a php site. The client isn't a tech savy guy he says he would like to have internet radio on his website as well. Now the thing is that when we speak of internet radio what are we actually talking about? My client himself has no idea of what internet radio is aside form listening to streaming mp3s on a flash player embedded on a website. I don't think my client would be ready to set up a radio station or so.. I have to give my client a report on what can and cannot be done. So I'm looking for the simplest solution possible that would pass off as internet radio...

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  • Using chilkat to extract RAR files with progress bar?

    - by Dodi300
    Hello. Does anyone know how to show the progress of archives extracting, when using chilkat? I already have a progress bar called "progressBar1" on my form. At the moment the whole program freezes when extraction is started. Maybe have another thread? I'm using this code: Chilkat.Rar rar = new Chilkat.Rar(); bool success; success = rar.Open("abc123.rar"); if (success != true) { MessageBox.Show(rar.LastErrorText); return; } success = rar.Unrar("c:/temp/unrarDest/"); if (success != true) { MessageBox.Show(rar.LastErrorText); } else { MessageBox.Show("Success."); } If anyone has any alternative ways to extract .rar files, it would be great to know. Thanks.

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