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  • Delete Entity in Many to Many Relation. Don't get error but entity is not deleted

    - by Shapper
    I have, in EF5, two entities: User and Role. Between User and Role there is a many to many relation. I don't have an entity for the UserRoles database which sets the relation. I have a User and I want to delete a role without loading it from the database. Context context = new Context(); User user = context.Users.First(x => x.Id == 4); user.Roles = new List<Role>(); Role role = new Role { Id = 20 }; context.Roles.Attach(role); user.Roles.Remove(role); context.SaveChanges(); I don't get any error but the role is not removed. Any idea why? Thank you, Miguel

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  • How can I tell that a NetTcp-based WCF connection was interrupted?

    - by mafutrct
    A WCF service is based on NetTcpBinding. It may happen that the client silently vanishes, leaving the server thinking that it is still connected. I'm currently using a thread that pings all connected client to see if they are still alive, and removes disconnected clients. Is a ping thread the correct way to solve the issue, or is there a better, possibly event-based way? Do I have to surround every code that communicates with the client by try/catch and remove it from the list of connected clients additionally?

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  • ASP.NET MVC 2 Client Side Validation doesn't work as advertised in VS2010

    - by Daniel Crenna
    In VS2010 and ASP.NET MVC 2, it seems that client-side validation (JQuery Futures or the stock option) doesn't quite work as advertised. I'm noticing that "tabbing off" a validated element will not invoke the client-side validation as promised. For a required field, you have to tab into the element, enter something, then remove it completely, in order to trigger the required validation. That's not really what I'm after here, and I'm hoping it's just a configuration issue on my side. How do I get the validation effects from previous versions so that a previous value isn't necessary (without having to modify the client-side scripts if possible)?

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  • Uniform distance between points

    - by Reonarudo
    Hello, How could I, having a path defined by several points that are not in a uniform distance from each other, redefine along the same path the same number of points but with a uniform distance. I'm trying to do this in Objective-C with NSArrays of CGPoints but so far I haven't had any luck with this. Thank you for any help. EDIT I was wondering if it would help to reduce the number of points, like when detecting if 3 points are collinear we could remove the middle one, but I'm not sure that would help.

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  • Debug.writeline locks

    - by Carra
    My program frequently stops with a deadlock. When I do a break-all and look at the threads I see that three threads are stuck in our logging function: public class Logging { public static void WriteClientLog(LogLevel logLevel, string message) { #if DEBUG System.Diagnostics.Debug.WriteLine(String.Format("{0} {1}", DateTime.Now.ToString("HH:mm:ss"), message)); //LOCK #endif //...Log4net logging } } If I let the program continue the threads are still stuck on that line. I can't see where this can lock. The debug class, string class & datetime class seem to be thread safe. The error goes away when I remove the "#if DEBUG System... #endif" code but I'm curious why this behavior happens. Thread one: public void CleanCache() { Logging.WriteClientLog(LogLevel.Debug, "Start clean cache.");//Stuck } Thread two: private void AliveThread() { Logging.WriteClientLog(LogLevel.Debug, "Check connection");//Stuck }

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  • Determining where to animate the map given a list of GeoPoints

    - by Itsik
    My android application loads some markers on an overlay onto a MapView. The markers are placed based on a dynamic list of GeoPoints. I want to move the map center and zoom into the area with most items. Naively, I can calculate the superposition of all the points, but I would like to remove the points that are very far from the mass of points from the calculation. Is there a known way to calculate this ? (e.g. probability, statistics .. ?)

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  • [C#] Boot problem

    - by Cecco
    Hi guys, I'm running on Windows 7 and I've a problem with my app at boot. Within my app I use some threads and external dll (sqlite3.dll, etc...). I've included these lines at first of my start.exe file: RegistryKey rkApp = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true); String p = System.Environment.CommandLine.Replace("vshost.",""); String pp = p.Remove(p.Length-1); rkApp.SetValue("MyAPP", pp); If I start my app manually from exe file (or with VisualStudio) works correctly. If I start my app on reboot, MyApp crashes after few seconds. Why I've this problem?

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  • In cygwin, why is there a lingering file filename.zip in a directory after running rm filename.zip?

    - by jonderry
    In cygwin in windows vista, I tried to remove a few zip files I created from the command line in cygwin. The rm finished without complaining, but there remains entries for these zip files in the directory, that cannot be opened or deleted, either in cygwin or vista. For example, ls -l shows the following after performing the rm: $ ls -l ls: cannot access submission.zip: No such file or directory ls: cannot access otherfile.zip: No such file or directory total 36 ??????????? ? ? ? ? ? submission.zip -rwx------ 1 username None 68 May 4 13:36 makefile ??????????? ? ? ? ? ? otherfile.zip ... What's causing this, and how can I fix it?

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  • Convert an interface's event from VB.Net to C#

    - by Jules
    Hi, I'm struggling to convert the below code to C#. Class Class1 Implements IMyInterface Public Event MyEvent(ByVal sender As Object, ByVal e As MyEventArgs) Implements IMyInterface.MyEvent Public Sub New() AddHandler Me.Slider.ValueChanged, AddressOf OnSliderValueChanged End Sub Private Sub OnSliderValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) RaiseEvent MyEvent(Me, New MyEventArgs()) End Sub End Class Here's what visual studio inserts when I ask it to implement for me: event EventHandler<MyEventArgs> IMyInterface.MyEvent { add { throw new NotImplementedException(); } remove { throw new NotImplementedException(); } } With a bit of googling I'm sure I can find out what to replace the NotImplementedException parts with but VS is still telling me that the definition is not implemented anyway.

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  • Hide Adsense on localhost

    - by collimarco
    I have a site built in Ruby On Rails which has many ads in different templates and views. It is hard to actualy remove each ad between tests and deployments. I don't know whether Google approves many impressions (even if without clicks) on localhost. How do you deal with this issue? Maybe it is a good solution to set a variable/constant available everywere to enable/disable ads easily. Do you think it is a good solution? If so, how do I declare a global variable for views?

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  • What is tha CAUSE of Error 523 and Error 200 in Blackberry handhelds

    - by voipsecuritydigest.com
    I'm Blackberry developer, customers using my application experiencing Error 523 and Error 200. Remedies to those errors are in first case - remove application, my application. In second case totally reload OS! This is very bad, and customers blame me! But this is I don't do anything illegal to make blackberry crash. I just used a lot of memory, which is obvious because customer want that. Everywhere including Blackberry knowledge base people talking how to fix the problem, which may happened to everybody using application from well known brands, for example Yahoo! finances. But nobody explains what is the mechanism behind this, and if it is possible to avoid the problem. I would like to know what is that CAUSE of Error 523 and Error 200?

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  • How to know if your Unit Test Fixture is “right-sized”?

    - by leeand00
    How do you know if you "Test Fixture" is right-sized. And by "Test Fixture" I mean a class with a bunch of tests in it. One thing that I've always noticed with my test fixtures is that they get to be kind of verbose; seeing as they could also be not verbose enough, how do you get a sense of when your unit tests are the right size? My assumption is that (at least in the context of web development) you should have one test fixture class per page. I know of a good quote for this and it's: "Perfection is achieved, not when there is nothing left to add, but when there is nothing left to remove." - Antoine de Saint-Exupery.

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  • Alter top and bottom borders of Dojo/Dijit Dialog and ContentPane

    - by Joe Zitzelberger
    I have a Dojo/Dijit Dialog that contains a FORM. There is a top border between the title bar and the content, and a bottom border below the content. Both are about 19 or 20 pixels high and colored #eeeeee. I can't find these borders in the CSS anywhere -- actually, neither can the IE Developer Toolbar -- they just don't seem to exist as elements. I suspect that Dijit is adding these programatically. Is there any way to just remove these borders? I just want my content to consume all of the dialog area below the title bar. TIA

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  • Cannot convert to string [on hold]

    - by user3598883
    I am trying to transfer information from form1 to form2 and I am getting the error of "Cannot implicitly convert type form1.employee to 'string' Some coding i have used for this transfer process is as follows: (everything is set to public) I'll Also add that I ONLY have it set to FirstName.FirstName because it seems tog et it to work if I remove one one of the FirstName then It tells me it cannot convert to string public void Enter_Click(object sender, EventArgs e) Form2 frm2 = new Form2(); Employee FirstName = new Employee(); if (Directions.Text == "Please Enter Employee First Name") { FirstName.FirstName = Info.Text; Directions.Text = "Please Enter Employee Last Name"; } frm2.FN.Text = FirstName; public class Employee { public string FirstName; }

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  • Data-binding taking to long to update

    - by Justin
    In my application I have this code in my view model: hiddenTextContainer.PreHideVerticalOffset = VerticalOffset; hiddenTextContainer.HiddenText = Text.Remove(SelectionStart, SelectionLength); hiddenTextContainer.HasHiddenText = true; hiddenTextContainer.NonHiddenTextStart = SelectionStart; Text = Text.Substring(SelectionStart, SelectionLength); SelectionStart = Text.Length; hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; This code is used to hide selected text in a textbox. Text is a string property data bound to the text property of a textbox and VerticalOffset is a double property data bound to the VerticalOffset property of that same textbox. I need to save the VerticalOffset before and after the hiding of selected text takes place, but with my code below both hiddenTextContainer.PreHideVerticalOffset and hiddenTextContainer.ImmediatePostHideVerticalOffset are always set to the same value no matter what. I have figured out that this is because the text of the textbox has not been updated by the time the code reaches: hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; Is there any way I can fix this?

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  • Why RichTextBox lose format after appending new String?

    - by user556526
    Hi guys I have aproblem with rich text box string color: I have the richtexbox that user type a message in it. I mark up each word that exist in my dictionary. I use this code for it: this.inputTextAreaRtb.Text=this.inputTextAreaRtb.Text.Remove(startCoordinate, endCoordinate - startCoordinate); this.inputTextAreaRtb.SelectionStart = this.inputTextAreaRtb.Text.Length; this.inputTextAreaRtb.SelectionLength = 0; this.inputTextAreaRtb.SelectionFont = new System.Drawing.Font( "David", 12, FontStyle.Underline); this.inputTextAreaRtb.SelectionColor = Color.DarkBlue; this.inputTextAreaRtb.AppendText(_word); this.inputTextAreaRtb.SelectionColor = this.inputTextAreaRtb.ForeColor; this.inputTextAreaRtb.SelectionFont = new System.Drawing.Font( "David", 12, FontStyle.Regular); But each time if I already marked up a word a loose formatting of words that already formatted. Any ideas of this problem?

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  • Dragging on Different Levels

    - by Fahim Akhter
    Hi, I have a flash project with three non overlapping panels (visual spaces) each of which contains different movie-clips. Each movie-clip in a particular panel is the child of that panel. Now, I want to drag one of the movie-clips from one panel to another (remove it as a child from the first panel and add it to the other) without a jitter and proper drag. What is the appropriate way to handle the drag architecturally. Should the drag be handled in all panels parent. In the panels, or the items themselves? Thanks.

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  • Confused by "let" in Clojure

    - by Tom Dalling
    I just started playing with Clojure, and I wrote a small script to help me understand some of the functions. It begins like this: (def *exprs-to-test* [ "(filter #(< % 3) '(1 2 3 4 3 2 1))" "(remove #(< % 3) '(1 2 3 4 3 2 1))" "(distinct '(1 2 3 4 3 2 1))" ]) Then it goes through *exprs-to-test*, evaluates them all, and prints the output like this: (doseq [exstr *exprs-to-test*] (do (println "===" (first (read-string exstr)) "=========================") (println "Code: " exstr) (println "Eval: " (eval (read-string exstr))) ) ) The above code is all working fine. However, (read-string exstr) is repeated so I tried to use let to eliminate the repetition like so: (doseq [exstr *exprs-to-test*] (let [ex (read-string exstr)] ( (do (println "===" (first ex) "=========================") (println "Code: " exstr) (println "Eval: " (eval ex)) ) )) ) But this works once for the first item in *exprs-to-test*, then crashes with a NullPointerException. Why is the addition of let causing the crash?

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  • Custom Tag Issue

    - by user1304570
    I got a problem in making custom tag in jsf2.0 for authentication.Actually I made a sample it get run successfully But When i am merging it with my project Its component class get skipped out.But When I remove Follwing entry from web.xml <context-param> <param-name> org.jboss.jbossfaces.JSF_CONFIG_NAME </param-name> <param-value>MyFaces-2.0</param-value> </context-param> It get run success fully .But It show a red line text in every page of my project i.e One or more resources have the target of 'head', but no 'head' component has been defined within the view.**

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  • cleartool question

    - by chuanose
    Lets say I have a directory at \testfolder, and the latest is currently at /main/10. I know that the operation resulting in testfolder@@/main/6 is to remove a file named test.txt. What's a sequence of cleartool operations that can be done in a script that will take "testfolder@@/main/6" and "test.txt" as input, and will cat out the contents of test.txt as of that time? One way I can think of is to get the time of /main/6 operation, create a view with config spec -time set to that time, and then cat the test.txt at the directory. But I'm wondering if I can do this in a easier way that doesn't involve manipulating config specs, perhaps through "cleartool find" and extended path names

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  • How to empty a socket in python?

    - by luc
    I need to empty the data on a socket (making sure that there is nothing to receive). Unfortunately, there is no function for this in the python socket module. I've implemented something this way: def empty_socket(sock): """remove the data present on the socket""" input = [sock] while 1: inputready, o, e = select.select(input,[],[], 0.0) if len(inputready)==0: break for s in inputready: s.recv(1) What do you think? Is there a better way to do that? Update: I don't want to change the socket timeout. What's why i prefer a select to a read. Update: The original question was using the 'flush' term. It seems that 'empty' is a better term. Update - 2010-02-27 : I've noticed a bug after when the pair has closed. The inputready is always filled with the sockets. I fixed that by adding a maximum number of loops. Is there a better fix?

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  • [Ext.tree.TreePanel] getNodeById does not work

    - by Moon
    Hi, I have a ext treepanel with json. var tree = new Ext.tree.TreePanel({ renderTo:'tree-container', title: 'Category', height: 300, width: 400, useArrows:true, autoScroll:true, animate:true, enableDD:true, containerScroll: true, rootVisible: false, frame: true, root: { text: 'Category', draggable: false, id: '0' }, // auto create TreeLoader dataUrl: $("#web").val() + "/category/index/get-nodes", listeners: { 'checkchange': function(node, checked){ if(checked){ categoryManager.add(node.id); //node.getUI().addClass('complete'); }else{ categoryManager.remove(node.id); // node.getUI().removeClass('complete'); } } } }); dataUrl loads the following json code [{"text":"Code Snippet","id":"1","cls":"folder","checked":false,"children":[{"text":"PHP","id":"3","cls":"file","checked":false,"children":[]},{"text":"Javascript","id":"4","cls":"file","checked":false,"children":[]}]}] when I try to find a node by console.log( tree.getNodeByid(3) ), it shows that it is undefined. Do I have a problem with my code?

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  • Reaplaceing the Import Table in PE file by standart LoadLibrary...

    - by user308368
    Hello. I have an executable (PE) file that load a dll file as represented in the Import table... let say: PEFile.exe Modules.dll my question is how can i remove Modules.dll's import_descriptor from the imports and do its work by loadLibrary without the rely on the import table and without destroy the file???... My bigger problem his i could not understand exactly how the Import thing works... after the loader read the information he needs to do the import's thing, i believe he use the LoadLibrary, GetProcAddress APIs... but i couldn't understated what he doing with the pointers he get... he putting them somewhere in memory... and then what just call them?!? all the papers i found in the net explain the structure of the import table, but i didn't found a paper that explain how it is really work and get used... i hope you cold understand my Gibberish English... Thank you!

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  • absolute expiration cache object - can it be manually removed ?

    - by Truegilly
    Hello, been pulling my hair out over this for the past few hours. i have a cache object.. HttpRuntime.Cache.Insert("Members", AllMembersList, null, DateTime.Now.AddHours(1), TimeSpan.Zero); when i try and clear the cache object.. HttpRuntime.Cache.Remove("Members"); its value doesnt change, untill 1 hour is up or when i reset the server. My question.. for a cache object that is set absolute expiration, can i manually clear it or will it exist for the full hour ? what i would like is this object to last for an hour but depending on program execution be able to clear it so it will contain fresh data. any help is most appreciated truegilly

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  • problem in using while loop in php&mysql

    - by Mac Taylor
    hey guys im using a while loop to show my latest forum topics now i need to count some fields either I'm trying to do it in one query and here is my code : $result = $db->sql_query("SELECT t.*,p.*, SUM(t.topic_approved='1') AS Amount_Of_Topics, SUM(t.topic_views) AS Amount_Of_Topic_Views, SUM(t.topic_replies) AS Amount_Of_Topic_Replies, SUM(p.post_approved ='1') AS Amount_Of_Posts FROM bb3topics t left join bb3posts p ON t.topic_id=p.topic_id ORDER BY t.topic_last_post_id DESC LIMIT 10 " ); while( $row = $db->sql_fetchrow($result) ) { problem : this code shows only one forum topic and not the rest , but if i remove sum() part from it , then it shows the rest is there anything wrong with my query code ?!

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