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  • ASP.NET check if LinqToEntities returned something or not.

    - by Alex
    How to make this method return boolean value, depending on query return. False - nothing, True - data exists. Before i just returned int from uniqueQuote.Count() but does not look like great method. Thank you! private bool CheckEnquiryUser(int enquiryId, Guid userId) { int selectedEnquiryId = enquiryId; Guid currentUserId = userId; Entities ctx3 = new Entities(); var uniqueQuote = from quot in ctx3.Enquiries.Include("aspnet_Users") where quot.EnquiryId == selectedEnquiryId && quot.aspnet_Users.UserId == currentUserId select quot; bool exist = uniqueQuote; return exist;

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  • VC++ to C# migration guidelines/approaches/Issues

    - by KSH
    Hi all, We are planning to move few of our VC++ Legacy products to C# with .NET platform.. I am in the process of collecting the relavent information before making the proposal to give optimistic and effective approach to clients. Am looking for the following details. Any general guidelines in migration of VC++ to C#.NET What are the issues that a team can face when we take up this activity Are there any existing approaches available ? I believe many might have tried but may not have detailed information, but consolidating this under this would help not only me but anyone who look for these information. Any good / valid resources available on internet? Any suggestions from Microsoft team if any Microsoft people in this group? Architecture, components design approaches, etc. Please help me in getting these information, each penny would help me to gain good understanding.. Thanks in advance to those who will share their wisdom thorough this query.

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  • How can I get running totals of integer values from a SortedDictionary?

    - by user578083
    SortedDictionary<int, string> typeDictionary = new SortedDictionary<int, string>(); SortedDictionary<int, int> lengthDictionary = new SortedDictionary<int, int>(); lengthDictionary has values in key value pair as follows: <1,20> <2,8> <3,10> <4,5> i want LINQ query which will return me new list like as follows <1,20> <2,20+8=28> // 20 from key 1 <3,28+10=38> // 28 from key 2 <4,38+5=43> // 38 from key 3 Result should like this: <1,20> <2,28> <3,38> <4,43>

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  • jQuery catch img

    - by Happy
    We have a script used for each .item: $(".item").each(function(){ item_link = "http://..."; block = $('.block', this); $.get(item_link, function(data) { var src = $('img.slide', data).attr('src'); block.html(src); }); }); item_link variable is uniquie for each query. There can be 100 .item or more. The problem is - server has limit on connections at the same time, that why some .item get var src, some not. The best solution is to use just one .get at the same time. I think there should be some counter, if .get is finished - it gives message "I'm finished, you can start" to the next .get and so on. How to do that? Thanks.

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  • How do I display each view once as they are loaded, in Android?

    - by Joe Masilotti
    I have an Android application that works off of a smaller database, around 300 entries. To view the database, I have created a custom view that contains individual rows of data. Then I query the database, and add each line to a newly created custom view. The problem is that it takes a little white for all of this to be created/loaded, so when you open the application, it sits for a few seconds. How can I load one line of data, then display it, then the next, append it, etc.?

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  • ajax how to read out $_post variable

    - by alex
    Hi, I am trying to filter/search a database with ajax $.ajax({ type: "POST", url: "filterSearch.php", queryString: qry, success: function(data){ alert( "Data Saved: " + data ); $('#searchResult').html(data); // Fill the search results box } }); Now in filterSearch.php i have the following test codes if(isset($_POST['queryString'])) { echo "TEST"; } if($_POST['runquery']==1) { $sql = "SELECT * FROM fs_vacatures WHERE here-the-like-query?"; $msg = $sql; echo $msg; die(); } die(); But nor TEST or the $sql is return in the alert??

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  • JQUERY AJAX, Issues with spaces being sent to the server, Why?

    - by nobosh
    I'm using the following code to post to the server which is then sent to a MYSQL query to find matches via search. $.ajax({ url: '/search/spotlight/', data: "q=" + $(this).val(), success: function(data) { } }); When Q's val has spaces in it, it's creating problems. I'm wondering if I'm handling this correctly? Do I need to encode the value in the AJAX call? Or is this a problem on my backend, which is ColdFusion Right now JQUERY is posting the following to the server: /search/spotlight/?q=FirstName%20LastName is this right?

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  • SQL UDF Group By Parameter Issue

    - by Ryan Strauss
    I'm having some issues with a group by clause in SQL. I have the following basic function: CREATE FUNCTION dbo.fn_GetWinsYear (@Year int) RETURNS int AS BEGIN declare @W int select @W = count(1) from tblGames where WinLossForfeit = 'W' and datepart(yyyy,Date) = @Year return @W END I'm trying to run the following basic query: select dbo.fn_GetWinsYear(datepart(yyyy,date)) from tblGames group by datepart(yyyy,date) However, I'm encountering the following error message: Column 'tblGames.Date' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause. Any ideas why this is occurring? FYI, I know I can remove the function and combine into one call but I'd like to keep the function in place if possible.

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  • Find the period of over speed ?

    - by Vimvq1987
    Just something interesting come in my mind. Assume that we have a table (in SQL Server) like this: Location Velocity Time What is the best way to determine over speed periods (speed barrier is defined) ? My first idea was loading the table into an array, and then iterate over array to find these periods: (Pseudo C# code) bool isOverSpeed = false; for (int i =0;i<arr.Length;i++) { if (!isOverSpeed) if (arr[i].Velocity > speedBarrier) { #insert the first record into another array. isOverSpeed = true; } if(isOverSpeed) if (arr[i].Velocity < speedBarrier) { #insert the record into that array isOverSpeed = false; } } It works, but somewhat "not very effectively". Is there a "smarter" way, such as a T-SQL query or another algorithm to do this?

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  • How to join this table?

    - by pamella
    ads table img90.imageshack.us/img90/6295/adsvo.png phones table img194.imageshack.us/img194/3713/phones.png cars table img35.imageshack.us/img35/1035/carsm.png i have 3 tables ads,cars and phones. i want to join tables is based on category in ads table. and i tried this query but no luck,any helps? SELECT * FROM `ads` JOIN `ads.category` ON `ads.id` = `ads.category.id` ** i cant add comment any of your post,but i want it to be automatic based on category in ads table. for example :- if in table have phones category,i will automatic join phones table then SELECT * FROM `ads` JOIN `phone` ON `ads.id` = `phone.id` if in table have cars category,i will automatic join cars table SELECT * FROM `ads` JOIN `cars` ON `ads.id` = `cars.id`

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  • How to avoid Foreign Keys constraints for all tables in DB truncate ?

    - by eugeneK
    Hi, for designing purposes i need to truncate all DB which has lots of FK's. I cannot use DELETE command simply because some tables set with Identity of TinyInts and contain about 150 items. this is a query ( truncate all tables in selected DB ) i'm trying to run Declare @t varchar (1024) Declare tbl_cur cursor for select TABLE_NAME from INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' OPEN tbl_cur FETCH NEXT from tbl_cur INTO @t WHILE @@FETCH_STATUS = 0 BEGIN EXEC ('TRUNCATE TABLE '+ @t) FETCH NEXT from tbl_cur INTO @t END CLOSE tbl_cur DEALLOCATE tbl_Cur What the best and easiest way to achieve truncate on DB with many FK's ?

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  • How to limit results by SUM

    - by superspace
    I have a table of events called event. For the purpose of this question it only has one field called date. The following query returns me a number of events that are happening on each date for the next 14 days: SELECT DATE_FORMAT( ev.date, '%Y-%m-%d' ) as short_date, count(*) as date_count FROM event ev WHERE ev.date >= NOW() GROUP BY short_date ORDER BY ev.start_date ASC LIMIT 14 The result could be as follows: +------------+------------+ | short_date | date_count | +------------+------------+ | 2010-03-14 | 1 | | 2010-03-15 | 2 | | 2010-03-16 | 9 | | 2010-03-17 | 8 | | 2010-03-18 | 11 | | 2010-03-19 | 14 | | 2010-03-20 | 13 | | 2010-03-21 | 7 | | 2010-03-22 | 2 | | 2010-03-23 | 3 | | 2010-03-24 | 3 | | 2010-03-25 | 6 | | 2010-03-26 | 23 | | 2010-03-27 | 14 | +------------+------------+ 14 rows in set (0.06 sec) Let's say I want to dislay these events by date. At the same time I only want to display a maximum of 10 at a time. How would I do this? Somehow I need to limit this result by the SUM of the date_count field but I do not know how. Anybody run into this problem before? Any help would be appreciated. Thanks

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  • Possibly simple PHP/MYSQL issue with retrieving and showing data

    - by envoys
    I have been racking my brains over this for a while now. Here is the data i have in the sql data base as an example: ID | TYPE | DATA 1 | TXT | TEST 2 | PHP | php 3 | JS | JAVASCRIPT That is just an example, there are multiple listing for TXT, PHP and JS throughout the table. What I want to do is retrive all the data and display it all into separate drop down/select boxes. Meaning, select box one would list all data with type TXT, select box two would list all data with type PHP and select box 3 would list all data with type JS. The only way I have came about doing this is doing individual sql queries for each different type. I know there is a way to do it all in 1 query and then display it the way I want to but I just can't seem to figure out how and I know its going to drive me nuts when someone helps and I see just how they did it. Thanks for the input.

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  • Help me construct this Linq statement

    - by Geoffrey
    There should be a simple Linq query for what I'm trying to accomplish, but I'm producing some ugly code. I have two tables, one of issues and another of issue status. There is a one-to-many relationship between issue and issue status. When an issue is created an IssueStatus is also created with the status field set to "Open" when it is closed, another IssueStatus is created with the status field set to "Closed" ... but issues can be re-opened. It seems like I should be able to write something like this: public static List<Issue> FindOpenIssues(this IList<Issue> issues) { return ( from issue in issues from issueStatus in issue.issueStatus.OrderBy(x=>x.CreatedOn).Single() where issueStatus.Status == "Open" select issue ).ToList(); } This obviously fails, but there must be a clean way to do this? Thanks!

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  • Is this a secure way to structure a mysql_query in PHP

    - by Supernovah
    I have tried and tried to achieve an SQL injection by making custom queries to the server outside of firefox. Inside the php, all variables are passed into the query in a string like this. Note, by this stage, $_POST has not been touched. mysql_query('INSERT INTO users (password, username) VALUES(' . sha1($_POST['password']) . ',' . $_POST['username'] . ')); Is that a secure way to make a change?

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  • MYSQL: COUNT with GROUP BY, LEFT JOIN and WHERE clause doesn't return zero values

    - by Paul Norman
    Hi guys, thanks in advance for any help on this topic! I'm sure this has a very simply answer, but I can't seem to find it (not sure what to search on!). A standard count / group by query may look like this: SELECT COUNT(`t2`.`name`) FROM `table_1` `t1` LEFT JOIN `table_2` `t2` ON `t1`.`key_id` = `t2`.`key_id` GROUP BY `t1`.`any_col` and this works as expected, returning 0 if no rows are found. So does: SELECT COUNT(`t2`.`name`) FROM `table_1` `t1` LEFT JOIN `table_2` `t2` ON `t1`.`key_id` = `t2`.`key_id` WHERE `t1`.`another_column` = 123 However: SELECT COUNT(`t2`.`name`) FROM `table_1` `t1` LEFT JOIN `table_2` `t2` ON `t1`.`key_id` = `t2`.`key_id` WHERE `t1`.`another_column` = 123 GROUP BY `t1`.`any_col` only works if there is at least one row in table_1 and fails miserably returning an empty result set if there are zero rows. I would really like this to return 0! Anyone enlighten me on this? Beer can be provided in exchange if you are in London ;-)

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  • How to store and retrieve pictures using PHP?

    - by user1276898
    I am building a webpage using PHP to search within my database. I am able to do a query and get the data to show on my page. I also have a picture that is related to each record. Let's say something like a picture ID for each employee. I am wondering what is the best way to store and retrieve pictures in order to get it show using PHP. Is there a way to store all the pictures in the subfolder like " image" and retrieve the pictures using PHP? I tried to search around on the internet, but I get confused. Also, when I type something in the search box and click the button, is there a way to keep the input in the search box without erasing it? Thank you very much.

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  • select field information with min time value

    - by Scarface
    Hey guys quick question, I thought I was doing the right thing but I keep getting the wrong result. I am trying to simply find the id of the entry with the min time, but I am not getting that entry. $qryuserscount1="SELECT id,min(entry_time) FROM scrusersonline WHERE topic_id='$topic_id'"; $userscount1=mysql_query($qryuserscount1); while ($row2 = mysql_fetch_assoc($userscount1)) { echo $onlineuser= $row2['id']; } That is my query, and it does not work. This however does work which does not make sense to me SELECT id FROM scrusersonline WHERE topic_id='$topic_id' ORDER by entry_time LIMIT 1, can anyone quickly point out what I am doing wrong?

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  • how to print not mapped value

    - by IcanMakeIt
    I am using complicated SQL queries, i have to use SqlQuery ... in simple way: MODEL: public class C { public int ID { get; set; } [NotMapped] public float Value { get; set; } } CONTROLLER: IEnumerable<C> results = db.C.SqlQuery(@"SELECT ID, ATAN(-45.01) as Value from C); return View(results.ToList()); VIEW: @model IEnumerable<C> @foreach (var item in Model) { @Html.DisplayFor(modelItem => item.Value) } and the result for item.Value is NULL. So my question is , how can i print the computed value from SQL Query ? Thank you for help.

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  • SQL Outer joins

    - by dsquaredtech
    Three tables courses,registration,students columns in students firstname,lastname,studentid,major,admitdate,graddate,gender,dob columns in registration courseid,studentid columns in courses coursenumber,coursename,credits select statement I need to modify select lastname as 'Last Name',sum(credits) as 'Credits Registered For' from students as s inner join registration as r on s.studentid = r.studentid inner join courses as c on c.coursenumber = c.courseid group by last name; the question on the lab is... Modify the previous query to show all students, even if they have not registered for a class. You should have 14 rows. Students who are not registered will show NULL in output. I know this requires outer join of some sort but I'm not fully grasping these joins i've read multiple posts on here and other sites but can't seem figure it out.

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  • Google App Engine & Django Sandbox: Shell and Web seem to be using different datastores?

    - by tones
    I'm new to both Django and Google App Engine, and am using a sandbox in OSX10.6 with the GoogleAppEngineLauncher. I've got a basic "bookstore" application running from the tutorial in the OReilly "Programming Google App Engine" book. Here's the bug: If I add a new object to the datastore through the web interface, then it's readable through the web interface, but does not appear to exist if I query the datastore through the shell. Vice versa: If I add an object in the shell, then I can read it from the shell, but it doesn't appear in the web interface. Any thoughts or theories would be welcome. Thanks! =T=

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  • check for null date in CASE statement, where have I gone wrong?

    - by James.Elsey
    Hello, My source table looks like this Id StartDate 1 (null) 2 12/12/2009 3 10/10/2009 I want to create a select statement, that selects the above, but also has an additional column to display a varchar if the date is not null such as : Id StartDate StartDateStatus 1 (null) Awaiting 2 12/12/2009 Approved 3 10/10/2009 Approved I have the following in my select, but it doesn't seem to be working. All of the statuses are set to Approved even though the dates have some nulls select id, StartDate, CASE StartDate WHEN null THEN 'Awaiting' ELSE 'Approved' END AS StartDateStatus FROM myTable The results of my query look like : Id StartDate StartDateStatus 1 (null) Approved 2 12/12/2009 Approved 3 10/10/2009 Approved 4 (null) Approved 5 (null) Approved StartDate is a smalldatetime, is there some exception to how this should be treated? Thanks

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  • Delphi and mysql - Unable to connent to server..maybe custom connection reqd

    - by Steve
    I am coding an application for my company wherein i want to parse the results of a mysql query and display them in my application but i am facing a problem conecting to the database. the ip address of the server is : 172.30.192.20 and before i can ping it i have to add route on my pc something like this route add 172.30.192.0 mask 255.255.255.0 172.30.192.56 where 172.30.192.56 is the gateway Now whenever i try to connect 172.30.192.20 which is where the sql server is running my appplication instead connects to 172.30.192.56 i am coding the application in delphi and have used TmySQL After this didnt workout i tried an application called SQLwave. I just entered the server ip address and was able to connect to the database without any problems. it seems sqlwave uses mydac which is why even i tried using it but using the default connection options and setting i was still not able to connect. it seems sqlwave uses a custom connection using mydac i just want to know whats going wrong with my connection

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  • How do you insert new entries into an Access db table through an ASP.net website?

    - by CGF
    I need to insert new records into an Access database. I'm using Visual Studio 2008 and firstly create a asp.net website. I can connect to the information in Access databse using dataview or gridview and can query a particular entry (ie. Proposal No. -brings up all details linking to that proposal). I can then edit the details of that proposal and this would update the Access Db. What I need to do is to have a form that simply enters new details for a new customer. ie. Enter name [__] Enter Adress[__]. Then for this to update the database. By using the gridview or dataview I am able to view all fields that exist in the table and edit them. Is there a way that I can get a blank gridview/dataview template (which includes all the fields in the table) and fill it out to then update the database? Thanks

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  • Can I stagger UpdatePanel updates in .NET?

    - by cusimar9
    I have a situation in which I select an account and I want to bring back its details. This is a single UpdatePanel round trip and its quite quick. In addition, I need to bring back some transactional information which is from a much bigger table and takes a couple of seconds for the query to come back. Ideally, I would like to put this into a second update panel and update this additional information once it has been received, but after the first update panel has updated i.e. the user sees: Change account See account details (almost instant) See transactional info (2 seconds later) The only way I can think of doing this is to use javascript to cause a SECOND postback once the account details have been retrieved to get the transaction information. Is there a better way?

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