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  • c# linq to sql join problem

    - by b0x0rz
    i am trying to do using (UserManagementDataContext context = new UserManagementDataContext()) { var users = from u in context.Users where u.UserEMailAdresses.EMailAddress == "[email protected]" select u; return users.Count(); } however, when i get to: using (UserManagementDataContext context = new UserManagementDataContext()) { var users = from u in context.Users where u.UserEMailAdresses. i do not get offered the EMailAddress name, but rather some neutral default-looking list of options in intelisense. what am i doing wrong? table Users ID bigint NameTitle nvarchar(64) NameFirst nvarchar(64) NameMiddle nvarchar(64) NameLast nvarchar(64) NameSuffix nvarchar(64) Status bigint IsActive bit table UserEMailAddresses ID bigint UserID bigint EMailAddress nvarchar(256) IsPrimary bit IsActive bit obviously, 1 user can have many addresses and so Users.ID and UserEMailAddresses.UserID have a relationship between them: 1 to MANY.

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  • Cannot read app.config, why???

    - by user46503
    Hello, I'm trying to get data from app.config and I always get zero. The App.config is here: <?xml version="1.0" encoding="utf-8"?> <configuration> <connectionStrings> <add name="ExplorerContext" connectionString="metadata=res://*/ExplorerData.csdl|res://*/ExplorerData.ssdl|res://*/ExplorerData.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=MYT\SQLEXPRESS;Initial Catalog=Explorer;Integrated Security=True;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" /> </connectionStrings> </configuration> Could someone explain what is wrong, why I cannot get the values, System.Configuration.ConfigurationManager.AppSettings.Count is always 0 Thanks

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  • MySQL break out group clause from subquery

    - by Anton Gildebrand
    Here is my query SELECT COALESCE(js.name,'Lead saknas'), count(j.id) FROM jobs j LEFT JOIN job_sources js ON j.job_source=js.id LEFT JOIN (SELECT * FROM quotes GROUP BY job_id) q ON j.id=q.job_id GROUP BY j.job_source The problem is that it's allowed for each job to have more than one quote. Because of that i group the quotes by job_id. Now sure, this works. But i don't like the solution with a subquery. How can i break out the group clause from the subquery to the main query? I have tried to add q.job_id to the main group clause, both before and after the existing one but don't get the same results.

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  • Linq-to-Sql query advice please

    - by Mantorok
    Hi all Just wondering if this is a good approach, I need to search for items containing all of the specified keywords in a space-delimted string, is this the right approach this? var result = (from row in DataContext.PublishedEvents join link in DataContext.PublishedEvent_EventDateTimes on row.guid equals link.container join time in DataContext.EventDateTimes on link.item equals time.guid orderby row.EventName select new {row, time}); // Split the keyword(s) to limit results with all of those words in. foreach(var keyword in request.Title.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)) { var val = keyword; result = result.Where(row=>row.row.EventName.Contains(val)); } var end = result.Select(row=>new EventDetails { Title = row.row.EventName, Description = TrimDescription(row.row.Description), StartDate = row.time.StartDate, EndDate = row.time.EndDate, Url = string.Format(ConfigurationManager.AppSettings["EventUrl"], row.row.guid) }); response.Total = end.Count(); response.Result = end.ToArray(); Is there a slick Linq-way of doing all of this in one query? Thanks

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  • How to get the position of a record in a table (SQL Server)

    - by Peter Siegmann
    Following problem: I need to get the position of a record in the table. Let's say I have five record in the table: Name: john doe, ID: 1 Name: jane doe, ID: 2 Name: Frankie Boy, ID: 4 Name: Johnny, ID: 9 Now, "Frankie Boy" is in the third position in the table. But How to get this information from the SQL server? I could count IDs, but they are not reliable, Frankie has the ID 4, but is in the third position because the record with the ID '3' was deleted. Is there a way? I am aware of ROW_RANK but it would be costly, because I need to select basically the whole set first before I can rank row_rank them. I am using MS SQL Server 2008 R2.

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  • ActionScript/Flex: Augment MouseEvents with extra information

    - by David Wolever
    I've got a business class, Spam and the corresponding view class, SpamView. How can I augment MouseEvents coming out of SpamView so the MouseEvents which come out of it contain a reference to the instance of Spam which the SpamView is displaying? Here's how I'd like to use it: class ViewContainer { ... for each (spam in spams) { addChild(new SpamView(spam)); ... function handleMouseMove(event:MouseEvent) { if (event is SpamViewMouseEvent) trace("The mouse is being moved over spam:", spam) } } Thanks! Things I've considered which don't work: Adding event listeners to each SpamView: the book keeping (making sure that they are added/removed properly) is a pain. Using event.target: the event's target may be a child of the SpamView (which isn't very useful) Listening for a MouseEvent, creating a new SpamViewMouseEvent, copying all the fields over, then dispatching that: copying all the fields manually is also a pain.

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  • How can i see if dealloc is being called on a uikit object, or any object not created by myself

    - by Gyozo Kudor
    I think i have an UIImage that has a higher retain count than it should have and i am probably leaking memory. I use this image as a thumbnail, to set a custom background to a uibutton. So the uibutton is holding a reference to it and so do i. But instead of 2, the retainCount is 3. Do i have to create a custom UIImage derived class and override dealloc if I want to place a log message there and then change the class used from UIImage to my class, or is there an easier way. Thanks in advance.

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  • Async call Objective C iphone

    - by Sam
    Hi guys, I'm trying to get data from a website- xml. Everything works fine. But the UIButton remains pressed until the xml data is returned and thus if theres a problem with the internet service, it cant be corrected and the app is virtually unusable. here are the calls: { AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; if(!appDelegate.XMLdataArray.count > 0){ [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; [appDelegate GetApps]; //function that retrieves data from Website and puts into the array - XMLdataArray. } XMLViewController *controller = [[XMLViewController alloc] initWithNibName:@"MedGearsApps" bundle:nil]; [self.navigationController pushViewController:controller animated:YES]; [controller release]; } It works fine, but how can I make the view buttons functional with getting stuck. In other words, I just want the UIButton and other UIButtons to be functional whiles the thing works in the background. I heard about performSelectorInMainThread but i cant put it to practice correctly any help is appreciated :)

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  • Flex 4 how to layout spark controls in an html table type way

    - by Amy
    I have a group of controls and I want to organize them in a table like fashion. I want 1 row and 6 columns. Col 1,3,4,5,6 should all auto size to the contents and col 2 should take up the remaining available space. When the size of the group changes, only col2 width should change. I also want to be able to set the alignment of each cell. How can I do this in flex 4? I found a reference to mx:constraintColumns but this seems to be used with the canvas and in flex 4 adobe suggests not using canvases. Is there something similar in flex 4? I'm looking for something along the lines of Grid/Grid.ColumnDefinitions in silverlight.

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  • PHP and MS Access: Number of Records returned by SELECT query

    - by VarunGupta
    I am running following PHP code to interact with a MS Access database. $odbc_con = new COM("ADODB.Connection"); $constr = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" . $db_path . ";"; $odbc_con -> open($constr); $rs_select = $odbc_con -> execute ("SELECT * FROM Main"); Using ($rs_select - RecordCount) gives -1 though the query is returning non-zero records. (a) What can be the reason? (b) Is there any way out? I have also tried using count($rs_select -> GetRows()). This satisfies the need but looks inefficient as it will involve copying of all the records into an array first.

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  • Interview question: How do I detect a loop in this linked list?

    - by jjujuma
    Say you have a linked list structure in Java. It's made up of Nodes: class Node { Node next; // some user data } and each Node points to the next node, except for the last Node, which has null for next. Say there is a possibility that the list can contain a loop - i.e. the final Node, instead of having a null, has a reference to one of the nodes in the list which came before it. What's the best way of writing boolean hasLoop(Node first) which would return true if the given Node is the first of a list with a loop, and false otherwise? How could you write so that it takes a constant amount of space and a reasonable amount of time? Here's a picture of what a list with a loop looks like: Node->Node->Node->Node->Node->Node--\ \ | ----------------

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  • Properties are making trouble

    - by DhavalR
    In my application I have added a Properties.cs file which contains properties that I am would use through out the application. I am getting NullReferenceException = Object reference not set to an instance of an object. Here is the code for Properties.cs public class Properties { private static string type1; public static string Type1 { get { return type1; } set { type1= value; } } } And when I access this property in one of my form I am getting error. e.g. if (Properties.Type1.Equals(string.Empty) || Properties.Type1.Equals(null)) { //// Do something }

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  • Jquery Delay Function Calls

    - by fizgig07
    I'm trying to find a way to delay all code that takes place after I make a service call. The reason for this delay is that my service returns code necesarry for the following functions and the result I pass is to these following functions is undefined. I have tried attaching the setTimeout() to the function that is called directly after the service call, but then it just skips the function I set the timeout on and jumps to the next function...My web method that I am calling is not that big and is not doing anything that is too intensive public bool GetSpreadsheetStatusForAdmin(string cacId) { SpreadSheetStatus result = new SpreadSheetStatus(); List<Data.Spreadsheet> spreadsheets = SpreadsheetManager.GetUserSpreadsheets(GetCurrent.Identity); if (spreadsheets.Count != 0) { foreach (Data.Spreadsheet spreadsheet in spreadsheets) { if (spreadsheet.Status == SpreadsheetStatus.Pending) { return true; } } } return false; } I had found the delay() and thought that might work, but I don't have jquery 1.4 and can't use it as of yet. is there anything that can help..?

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  • Remove empty subfolders with PHP

    - by Dmitry Letano
    I am working on a PHP function that will recursively remove all sub-folders that contain no files starting from a given absolute path. Here is the code developed so far: function RemoveEmptySubFolders($starting_from_path) { // Returns true if the folder contains no files function IsEmptyFolder($folder) { return (count(array_diff(glob($folder.DIRECTORY_SEPARATOR."*"), Array(".", ".."))) == 0); } // Cycles thorugh the subfolders of $from_path and // returns true if at least one empty folder has been removed function DoRemoveEmptyFolders($from_path) { if(IsEmptyFolder($from_path)) { rmdir($from_path); return true; } else { $Dirs = glob($from_path.DIRECTORY_SEPARATOR."*", GLOB_ONLYDIR); $ret = false; foreach($Dirs as $path) { $res = DoRemoveEmptyFolders($path); $ret = $ret ? $ret : $res; } return $ret; } } while (DoRemoveEmptyFolders($starting_from_path)) {} } As per my tests this function works, though I would be very delighted to see any ideas for better performing code.

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  • Can I "inherit" a delegate? Looking for ways to combine Moq and MSpec without conflicts around It...

    - by Tomas Lycken
    I have started to use MSpec for BDD, and since long ago I use Moq as my mocking framework. However, they both define It, which means I can't have using Moq and using Machine.Specifications in the same code file without having to specify the namespace explicitly each time I use It. Anyone who's used MSpec knows this isn't really an option. I googled for solutions to this problem, and this blogger mentions having forked MSpec for himself, and implemented paralell support for Given, When, Then. I'd like to do this, but I can't figure out how to declare for example Given without having to go through the entire framework looking for references to Establish, and changing code there to match that I want either to be OK. For reference, the Establish, Because and It are declared in the following way: public delegate void Establish(); public delegate void Because(); public delegate void It(); What I need is to somehow declare Given, so that everywhere the code looks for an Establish, Given is also OK.

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  • C# Code Smells. What are the most common and how to fix them?

    - by Carlos Loth
    Hi, One thing I'd like to hear from you guys is what are the code smells that you see most often happen on C# code and how to fix them. I'm working on defining a code-review process for my team and I'd like to include a section with the most common C# code smells and a possible fix for each of them. I'd like the assistance of the community on that, so others can reuse this list for further reference. What are the most common smells you have seen on C# code? How did you fix them?

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  • Writing a query to find MAX number in PL/SQL

    - by user2461116
    I am suppose to Write a query that will display the largest number of movies rented by one member and that member's name. Give the output column a meaningful name such as MAXIMUM NUMBER. This is what I have. select max(maximum_movies) from (select count(*)maximum_movies from mm_member join mm_rental on mm_rental.member_id = mm_member.member_id group by first, last); I got the maximum number but the output should be like this. First Last Maximum_movies John Doe 4 But the output is Maximum_movies 4 Any suggestions?

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  • How do file references within a PHP Objects work?

    - by bender
    I'm trying to create an PHP object that can load objects in other files on demand when needed. My problem is that when I reference the files based on file location for the class definition, it can not find the files. So file structure: /Test.php /os/os.php (extends kernel) /os/kernel.php /os/libraries/lib1.php /os/libraries/lib2.php /os/libraries/lib3.php In kernel.php, the libraries are referenced as 'libraries/lib1.php'. If I create an "os" object in Test.php. The lib files are not found.

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  • Abstract classes in shared library

    - by JTom
    Hi, I have an ordinary abstract class that has couple of pure virtual methods. The class itself is a part of the shared library. The compilation of the shared library itself is OK. But when the library is linked to another program that has another class deriving from the abstract one in the shared library and defining the pure virtual methods, I get the following linker error: I compile like this..: g++ -I../path/to/the/library main.cpp derived.cpp -L../path/to/the/library -lsomename -o shared ...and the linker error is: libsomename.so: undefined reference to `AbstractClass::method()' It's like the abstract class cannot access its pure virtual methods but I do not try to make any instance of the abstract class anywhere in the library. What could be the problem?

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  • Removing duplicate SQL records to permit a unique key

    - by j pimmel
    I have a table ('sales') in a MYSQL DB which should have rightfully have had a unique constraint enforced to prevent duplicates. To first remove the dupes and set the constraint is proving a bit tricky. Table structure (simplified): 'id (unique, autoinc)' product_id The goal is to enforce uniqueness for product_id. The de-duping policy I want to apply is to remove all duplicate records except the most recently created, eg: the highest id Or to put another way, I would like to delete duplicate records, excluding the ids matched by the following query: select id from sales s inner join (select product_id, max(id) as maxId from sales group by product_id having count(product_id) > 1) groupedByProdId on s.product_id and s.id = groupedByProdId.maxId I've struggled with this on two fronts - writing the query to select the correct records to delete and then also the constraint in MYSQL where a subselect FROM clause of a DELETE cannot reference the same table from which data is being removed.

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  • LINQ and paging with a DataTable - can't get Skip working?

    - by Kit Menke
    Ok so this might be a dumb question, but I can't seem to figure it out. I thought I'd try out LINQ against a DataTable. I got my query working and now I'm trying to implement some simple paging. DataTable dataTable = null; dataTable = GetAllDataTables(); var query = from r in dataTable.AsEnumerable() orderby r.Field<string>(Constants.fileName) select r; query.Skip(WPP_PAGE_SIZE * pageIndex).Take(WPP_PAGE_SIZE); My problem is that I get an error at query.Skip(...). Error 1 'System.Data.OrderedEnumerableRowCollection' does not contain a definition for 'Skip' and no extension method 'Skip' accepting a first argument of type 'System.Data.OrderedEnumerableRowCollection' could be found (are you missing a using directive or an assembly reference?) References I have: Microsoft.SharePoint System System.Core System.Data System.Data.DataSetExtensions System.Web System.Xml What am I missing?

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  • Group by date range on weeks/months interval

    - by khelll
    I'm using MySQL and I have the following table: | clicks | int | | day | date | I want to be able to generate reports like this, where periods are done in the last 4 weeks: | period | clicks | | 1/7 - 7/5 | 1000 | | 25/6 - 31/7 | .... | | 18/6 - 24/6 | .... | | 12/6 - 18/6 | .... | or in the last 3 months: | period | clicks | | July | .... | | June | .... | | April | .... | Any ideas how to make select queries that can generate the equivalent date range and clicks count?

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  • Developing for mobile devices and desktop

    - by Augusto
    Hi, I'm starting a new project. It will run on devices running Windows CE, Windows Mobile 6 and will also have a desktop version. The software will connect to some equipments through the serial port, using it's own protocol. Basically it will: connect to the equipment send and receive info read and write binary files These tasks will be shared between desktop and mobile devices. I've been searching the information I need, but I still have some doubts: If I target Windows CE devices it will work with Windows Mobile 6 too? Creating a class library targeting Windows CE will give me any trouble on using it in the desktop version? (when I add a reference to that class library, my VS says that I could experience some unexpected results) Is it possible to install .NET CF 3.5 on devices running Windows CE 4.2? Thanks!

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  • Parse a json(?) string using php

    - by passatgt
    I have a string, more specifically, this one: a:16:{s:9:"pseudonym";O:16:"SimpleXMLElement":0:{}s:14:"parallel_title";O:16:"SimpleXMLElement":0:{}s:9:"title_var";O:16:"SimpleXMLElement":0:{}s:6:"series";O:16:"SimpleXMLElement":0:{}s:9:"vol_title";O:16:"SimpleXMLElement":0:{}s:9:"reference";O:16:"SimpleXMLElement":0:{}s:10:"bound_with";O:16:"SimpleXMLElement":0:{}s:15:"general_remarks";O:16:"SimpleXMLElement":0:{}s:6:"copies";O:16:"SimpleXMLElement":1:{i:0;s:1:"1";}s:11:"remarks_BPH";O:16:"SimpleXMLElement":0:{}s:3:"ICN";O:16:"SimpleXMLElement":1:{i:0;s:4:"neen";}s:10:"provenance";O:16:"SimpleXMLElement":0:{}s:7:"binding";O:16:"SimpleXMLElement":0:{}s:10:"size_hxwxd";O:16:"SimpleXMLElement":0:{}s:6:"BookID";O:16:"SimpleXMLElement":1:{i:0;s:4:"6271";}s:5:"repro";O:16:"SimpleXMLElement":0:{}} Is it possible to parse this string somehow? I need to display the keys and values in a list. I tried to use json_decode but it not returns anything, even with the second true parameter(json_decode($string,true))

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  • Domain Model and Contracts

    - by devoured elysium
    I am modelling a DVD Rental Store: A Client gives its clientNumber to the System. The System checks whenever the given clientNumber is valid. The Client gives the name of the DVD he wants to rent. ... n. ...I will later have to form an association between a new instance of "RentDVD" class concept to the current Client c. My Domain Model is something like: I've made the Contract for the first and second operations as: Preconditions: none Postconditions: there exists a Client c such that c.clientNumber = clientNumber. Now, I don't know if I should form an association between this Client c and the DVDStore(that I intend to use as front-end). If I don't make the association, how will I later be able to "reference" this same Client? Should I be making an association between Client and a different concept? Thanks

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