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  • How to wait for the user to select one of the datagridview rows?

    - by Jhon
    I have a datagridview populated with some Names, I want to perform a check of all the Name in another database with the Names in datagridview and add the Surnames to the adjacent cell when a match is found, this I am achieving by string compare method. My Problem is that due to typing inconsistencies & at times with two people having same names some of the names are not being adjudged properly. What I want is to give user the choice to either choose one of the names present in Datagridview which they consider is best match or enter both First Name & Surname in a new row. To achieve this I want the program to wait until user has clicked on one of the rows in the datagridview. Is there a way to wait to this effect? Thanks Jhon

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  • Good Starting Points for Optimizing Database Calls in Ruby on Rails?

    - by viatropos
    I have a menu in Rails which grabs a nested tree of Post models, each which have a Slug model associated via a polymorphic association (using the friendly_id gem for slugs and awesome_nested_set for the tree). The database output in development looks like this (here's the full gist): SQL (0.4ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 39) CACHE (0.0ms) SELECT "posts".* FROM "posts" WHERE ("posts"."id" = 13) LIMIT 1 CACHE (0.0ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 40 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 SQL (0.3ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 40) CACHE (0.0ms) SELECT "posts".* FROM "posts" WHERE ("posts"."id" = 13) LIMIT 1 CACHE (0.0ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 41 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1 ... Rendered shared/_menu.html.haml (907.6ms) What are some quick things I should always do to optimize this from the start (easy things)? Some things I'm thinking now are: Can Rails 3 eager load the whole Post tree + associated Slugs in one DB call? Can I do that easily with named scopes or custom SQL? What is best practice in this situation? Not really thinking about memcached in this situation as that can be applied to much more than just this.

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  • Tools, scripts for working with MS SQL 2008

    - by hgulyan
    Hi, While working with DB, I find useful using some tools, that help me to solve DB problems. Some of them are: 1) Insert generator 2) A tool that can execute a script on a list of DB's 3) Finding a text in stored procedures and functions. 4) DB Back up scripts My question is, what are most useful tools, scripts(anything else), that help you to work with MS SQL? Thanks in advance.

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  • SQL Pivot table error-using variable gives syntax error

    - by Antoni
    Hi my coworker came to me with this error and now I am hooked and trying to figure it out, hope some of the experts can help us! Thanks so much! When I execute Step6 we get this error: Msg 102, Level 15, State 1, Line 4 Incorrect syntax near '@cols'. --Sample of pivot query --Creating Test Table Step1 CREATE TABLE Product(Cust VARCHAR(25), Product VARCHAR(20), QTY INT) GO -- Inserting Data into Table Step2 INSERT INTO Product(Cust, Product, QTY) VALUES('KATE','VEG',2) INSERT INTO Product(Cust, Product, QTY) VALUES('KATE','SODA',6) INSERT INTO Product(Cust, Product, QTY) VALUES('KATE','MILK',1) INSERT INTO Product(Cust, Product, QTY) VALUES('KATE','BEER',12) INSERT INTO Product(Cust, Product, QTY) VALUES('FRED','MILK',3) INSERT INTO Product(Cust, Product, QTY) VALUES('FRED','BEER',24) INSERT INTO Product(Cust, Product, QTY) VALUES('KATE','VEG',3) GO -- Selecting and checking entires in table Step3 SELECT * FROM Product GO -- Pivot Table ordered by PRODUCT Step4 select * FROM ( SELECT * FROM Product) up PIVOT (SUM(QTY) FOR CUST IN ([FRED], [KATE])) AS pvt ORDER BY PRODUCT GO --dynamic pivot???? Step5 DECLARE @cols NVARCHAR(2000) select @cols = STUFF(( SELECT DISTINCT TOP 100 PERCENT '],[' + b.Cust FROM (select top 100 Cust from tblProduct)b ORDER BY '],[' + b.Cust FOR XML PATH('') ), 1, 2, '') + ']' --Show Step6 SELECT * FROM (SELECT * FROM tblProduct) p PIVOT (SUM(QTY) FOR CUST IN (@cols)) as pvt Order by Product

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  • possible to fetch @mentions thru Facebook API (like thru Twitter API?)

    - by db
    I'm looking to implement a feature where I am able to collect @mentions through the facebook API in a similar fashion to the twitter API. Specifically, if I run a group called foo, and other people on facebook mention @foo in their wall posts, I'd like to fetch and collect the text of that particular @foo mention. I can't find any relevant documentation on Facebook....

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  • SQL Distinct keyword in assignment statement

    - by Brandi
    I have a query that works: DECLARE @ProductID int SET @ProductID = '1234' SELECT DISTINCT TOP 12 a.ProductID FROM A a WHERE a.CategoryID IN (SELECT b.CategoryID FROM B b WHERE b.ProductID = @ProductID) AND a.ProductID != @ProductID It returns a list of 12 product numbers, all unique. I need to store these results in a variable, comma separated, because that's what 3rd party stored procedure needs. So I have this: DECLARE @ProductID int DECLARE @relatedprods varchar(8000) SET @ProductID = '1234' SET @relatedprods = '' SELECT TOP 12 @relatedprods = @relatedprods + CONVERT(VARCHAR(20), a.ProductID) + ', ' FROM A a WHERE a.CategoryID IN (SELECT b.CategoryID FROM B b WHERE B.ProductID = @ProductID) AND a.ProductID != @ProductID SELECT @relatedprods Now, none of these are distinct, but it is returning 12 rows. Now I add the 'distinct' back in, like in the first query: DECLARE @ProductID int DECLARE @relatedprods varchar(8000) SET @ProductID = '1234' SET @relatedprods = '' SELECT DISTINCT TOP 12 @relatedprods = @relatedprods + CONVERT(VARCHAR(20), a.ProductID) + ', ' FROM A a WHERE a.CategoryID IN (SELECT b.CategoryID FROM B b WHERE B.ProductID = @ProductID) AND a.ProductID != @ProductID SELECT @relatedprods Only one product is returned in the comma separated list! Does 'distinct' not work in assignment statements? What did I do wrong? Or is there a way to get around this? Thanks in advance!

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  • EF4. Add a object with relationship causes full table select

    - by Fujiy
    Ex 1: "autor.ComentariosWorkItens.Add(comentarioWorkItem);" autor.ComentariosWorkItens makes EF4 load all ComentariosWorkItens. Ex 2: comentarioWorkItem.Usuario = autor; Fixup make EF load all ComentariosWorkItens too: private void FixupUsuario(Usuario previousValue) { if (previousValue != null && previousValue.ComentariosWorkItens.Contains(this)) { previousValue.ComentariosWorkItens.Remove(this); } if (Usuario != null) { if (!Usuario.ComentariosWorkItens.Contains(this)) { Usuario.ComentariosWorkItens.Add(this); } } } How can I prevent this?

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  • How to Post Javascript to a MySQL Database

    - by salientanimal
    Hi guys, I have created a form in HTLM and I m trying to post the information in the form to a MySQL database. My form make suse of a dynamic list selection that needs to be captured to the database. However when submtting the form I get the following error Error: Unknown column 'coulmn_name' in 'field list'. Here is my HTML CODE for the form <td height="94"><p align="justify">CALL TRACKER - ADMIN</p></td> Customer Name : E-Mail Address : </tr> <tr> <td width="29%" align="right" valign="middle"><strong>Case Number :</strong></td> <td> <input type="text" name="case_number" width="70%" align="left" valign="middle"> </td> </tr> <tr> <td width="29%" align="right" valign="middle"><strong>MSISDN :</strong></td> <td> <input type="text" name="msisdn" width="70%" align="left" valign="middle"> </td> </tr> <tr> <td width="29%" align="right" valign="middle"> <strong>Route Cause :</strong></td> <td width="71%" align="left" valign="middle"> <select name="route_cause" id="category" onChange="javascript: listboxchange1(this.options[this.selectedIndex].value);"> <!-- <select name="route_cause" id="route_cause"> --> <option value="">Select the Call Reason</option> <option value="Billing Admin">Billing Admin</option> <option value="Customer Care">Customer Care</option> <option value="Insurance">Insurance</option> <option value="Repairs">Repairs</option> <option value="SIM Swap">SIM Swap</option> <option value="UTI">UTI</option> </select> </td> </tr> <tr> <td align="right" valign="middle"> <strong>Call Type/Indexed To :</strong></td> <td align="left" valign="middle"> <script type="text/javascript" language="javascript" name="calltype_indexedto"> <!-- document.write('<select name="subcategory1" onChange="javascript: listboxchange2(this.options[this.selectedIndex].value);"><option value=""></option></select>') --> </script> </td> </tr> <tr> <td align="right" valign="middle"> <strong>Type/TAT :</strong></td> <td align="left" valign="middle"> <script type="text/javascript" language="javascript" name="type_tat"> <!-- document.write('<select name="subcategory2" onChange="javascript: listboxchange3(this.options[this.selectedIndex].value);"><option value=""></option></select>') --> </script> </td> </tr> <tr> <td width="29%" align="right" valign="middle"> <strong>Escalated To :</strong></td> <td width="71%" align="left" valign="middle"> <select name="escalatedto" id="escalated_to"> <option value="">Select the Escalation</option> <option value="Billing Ops">Billing Ops</option> <option value="Resolvers">Resolvers</option> <option value="Finance">Finance</option> <option value="Ressolver">Ressolver</option> <option value="Nudebt">Nudebt</option> <option value="Transunion">Transunion</option> <option value="N/A">N/A</option> </select> </td> </tr> <tr> <td width="29%" align="right" valign="middle"> <strong>Requested By :</strong></td> <td width="71%" align="left" valign="middle"> <select name="requestedby" id="requested_by"> <option value="">UTI Requested By</option> <option value="Billing">Billing</option> <option value="Customer Service">Customer Service</option> <option value="Insurance">Insurance</option> <option value="Management">Management</option> <option value="Repairs">Repairs</option> <option value="Retail Support">Retail Support</option> <option value="Retentions">Retentions</option> <option value="SIM Swap">SIM Swap</option> <option value="WOW">WOW</option> <option value="N/A">N/A</option> </select> </td> </tr> <tr> <td width="29%" align="right" valign="middle"> <strong>Province :</strong></td> <td width="71%" align="left" valign="middle"> <select name="province" id="province"> <option value="">Select the Province</option> <option value="Eastern Cape">Eastern Cape</option> <option value="Gauteng">Gauteng</option> <option value="Kwa-Zulu Natal">Kwa-Zulu Natal</option> <option value="Limpopo">Limpopo</option> <option value="Mpumalanga">Mpumalanga</option> <option value="North West">North West</option> <option value="Northern Cape">Northern Cape</option> <option value="Polokwane">Polokwane</option> <option value="Western Cape">Western Cape</option> <option value="Other">Other</option> </select> </td> </tr> <tr> <td width="29%" align="right" valign="middle"><strong>Comments :</strong></td> <td> <textarea rows ="5" cols="30" name="comments"> </textarea> </td> </tr> <tr> <td> <p> <input type="reset" value="Reset Form"><input type="Submit" value="Submit"> Here is my PHP CODE to write to the Database <?php $con = mysql_connect("hostname" ,"mysqusername" ,"mysqlpassword"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("databasename", $con); $sql="INSERT INTO customer_services_tracker (customer_name ,customer_email_address ,case_number ,msisdn ,route_cause ,calltype_indexedto ,type_tat ,escalatedto ,requestedby ,province ,comments ) VALUES ('$_POST[customer_name]' ,'$_POST[customer_email_address]' ,'$_POST[case_number]' ,'$_POST[msisdn]' ,'$_POST[route_cause]' ,'$_POST[calltype_indexedto]' ,'$_POST[type_tat]' ,'$_POST[escalatedto]' ,'$_POST[requestedby]' ,'$_POST[province]' ,'$_POST[comments]')"; $CatName = $rowCat["Name"]; if (!mysql_query($sql,$con)) { die('Error: ' . mysql_error()); } echo "1 record added"; mysql_close($con) ?>

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  • What are the reasons to select Object Oriented Programming over Procedural Programming?

    - by Starx
    Nowadays, Standard Coding has become Synonymous to Object Oriented Programming. But what are the reasons that forced classical procedural programming out of the way and rose the new concept of Object Oriented Programming. What were the limitations that Procedural Programming could not accomplish? and Does procedural language still hold some value in the field of programming? If yes, What are they, and What are there advantages over OOP?

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  • LINQ Query vs Lambda Expression

    - by FosterZ
    What is the difference between the following two snippets (i.e LINQ Query vs Lambda Expression) LINQ Query public Product GetProduct(int productID) { AdventureWorksDBDataContext db = new AdventureWorksDBDataContext(); Product product = (from p in db.Products where p.ProductID == productID select p).Single(); return product; } Using a Lambda expression public Product GetProduct(int productID) { AdventureWorksDBDataContext db = new AdventureWorksDBDataContext(); Product product = db.Products.Single(p = p.ProductID == productID); return product; }

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  • can I have more than one route per action on select parameters?

    - by zsharp
    my action has two 3 parameters, but only two are called at a time. So I want to do this: People is the action, string Height, string searchHigh, sting searchLow /Groups/People/Tall/searchHigh and this /Groups/People/Short/searchLow i map both and the first route works, but the second gets appended to the first when go to the short tab.

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  • ASP.NET MVC Return to Previous Page

    - by Jason Enochs
    I have a basic Edit method in my controller that redirects back to a top level listing (“Index”) when the edit succeeds. Standard setup after scaffolding. I am trying to change this Edit method to redirect back to the previous page (not Index). Since my Edit method is not using the default mapped input parameter “id”, I am using that to pass the previous URL. In my Edit “get” method, I use this line to grab the previous URL and it works fine: ViewBag.ReturnUrl = Request.UrlReferrer.AbsoluteUri; I send this return URL to the Edit “post” method by using my form tag like this: @using (Html.BeginForm(new { id = ViewBag.ReturnUrl })) Now this is where the wheels fall off. I can't seem to get the URL parsed from the id parameter properly. UPDATE**** Using Gary's example as a guide, I changing my parameter name from "id" to "returnUrl" and used a hidden field to pass my parameter. Lesson: Only use the id parameter how it was intended to be used...keep it simple. It works now... Here is my updated code. // // GET: /Question/Edit/5 public ActionResult Edit(int id) { Question question = db.Questions.Find(id); ViewBag.DomainId = new SelectList(db.Domains, "DomainId", "Name", question.DomainId); ViewBag.Answers = db.Questions .AsEnumerable() .Select(d => new SelectListItem { Text = d.Text, Value = d.QuestionId.ToString(), Selected = question.QuestionId == d.QuestionId }); ViewBag.returnUrl = Request.UrlReferrer; ViewBag.ExamId = db.Domains.Find(question.DomainId).ExamId; ViewBag.IndexByQuestion = string.Format("IndexByQuestion/{0}", question.QuestionId); return View(question); } // // POST: /Question/Edit/5 [HttpPost] public ActionResult Edit(Question question, string returnUrl) { int ExamId = db.Domains.Find(question.DomainId).ExamId; if (ModelState.IsValid) { db.Entry(question).State = EntityState.Modified; db.SaveChanges(); //return RedirectToAction("Index"); return Redirect(returnUrl); } ViewBag.DomainId = new SelectList(db.Domains, "DomainId", "Name", question.DomainId); return View(question); } and I changed my form tag to this: @using (Html.BeginForm()) { <input type="hidden" name="returnUrl" value="@ViewBag.returnUrl" /> Thanks Gary

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  • How do I select an item out of a JavaScript array when I only know a value for one of the item's pro

    - by minus4
    I have the following JavaScript object: { "DPI": "66.8213457076566", "width": "563.341067", "editable": "True", "pricecat": "6", "numpages": "2", "height": "400", "page": [{ "filename": "999_9_1.jpg", "line": [{ "test": "test 1", lineid: 22 }, { "test": "test 2", lineid: 22 }, { "test": "test 3", lineid: 22 }, { "test": "test 4", lineid: 22 }, { "test": "blank", lineid: 22 }] }, { "filename": "999_9_2.jpg", "line": [] }] } I can do most things with lines like measurements.page[0].line[0].lineid; But what I am really stuck with is when I want to edit a specific line but I only have the lineid value available (for example 22) and not the line number in the array: measurements.page[0].line[WHAT DO I PUT HERE].test = "new changed value";

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  • How to select the first element of a set with JSTL?

    - by Sergio del Amo
    I managed to do it with the next code but there must be an easier way. <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <c:if test="${fn:length(attachments) > 0}"> <c:forEach var="attachment" items="${attachments}" varStatus="loopCount"> <c:if test="${loopCount.count eq 1}"> attachment.id </c:if> </c:forEach> </c:if>

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  • For SQL select returning more than 1 value, how are they sorted when Id is GUID?

    - by Chris F
    I'm wondering how MSSQL orders data that is returned from a query and the Id columns of the respective tables are all of type uniqueidentifier. I'm using NHibernate GuidComb when creating all of the GUIDs and do things like: Sheet sheet = sheetRepository.Get(_SheetGuid_); // has many lines items IList<SheetLineItem> lineItems = sheet.LineItems; I'm just trying to figure out how they'll be ordered when I do something like: foreach (SheetLineItem lineItem in lineItems) I can't see to find a good article on the way GUIDs are compared by SQL when being ordered, if that's what's happening.

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  • .Net Entity Framework SaveChanges is adding without add method

    - by tmfkmoney
    I'm new to the entity framework and I'm really confused about how savechanges works. There's probably a lot of code in my example which could be improved, but here's the problem I'm having. The user enters a bunch of picks. I make sure the user hasn't already entered those picks. Then I add the picks to the database. var db = new myModel() var predictionArray = ticker.Substring(1).Split(','); // Get rid of the initial comma. var user = Membership.GetUser(); var userId = Convert.ToInt32(user.ProviderUserKey); // Get the member with all his predictions for today. var memberQuery = (from member in db.Members where member.user_id == userId select new { member, predictions = from p in member.Predictions where p.start_date == null select p }).First(); // Load all the company ids. foreach (var prediction in memberQuery.predictions) { prediction.CompanyReference.Load(); } var picks = from prediction in predictionArray let data = prediction.Split(':') let companyTicker = data[0] where !(from i in memberQuery.predictions select i.Company.ticker).Contains(companyTicker) select new Prediction { Member = memberQuery.member, Company = db.Companies.Where(c => c.ticker == companyTicker).First(), is_up = data[1] == "up", // This turns up and down into true and false. }; // Save the records to the database. // HERE'S THE PART I DON'T UNDERSTAND. // This saves the records, even though I don't have db.AddToPredictions(pick) foreach (var pick in picks) { db.SaveChanges(); } // This does not save records when the db.SaveChanges outside of a loop of picks. db.SaveChanges(); foreach (var pick in picks) { } // This saves records, but it will insert all the picks exactly once no matter how many picks you have. //The fact you're skipping a pick makes no difference in what gets inserted. var counter = 1; foreach (var pick in picks) { if (counter == 2) { db.SaveChanges(); } counter++; } There's obviously something going on with the context I don't understand. I'm guessing I've somehow loaded my new picks as pending changes, but even if that's true I don't understand I have to loop over them to save changes. Can someone explain this to me?

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  • linq to sql with nservicebus table lock issue

    - by IGoor
    I am building a system using NServiceBus and my DataLayer is using Linq 2 SQL. The system is made up of 2 services. Service1 receives messages from NSB. It will query Table1 in my database and inserts a record into Table1 If a certain condition is met a new NSB message is sent to the 2nd service Service2 will update records also in Table1 when it receives messages from Service1 and it does some other non database related work. Service2 is a long running process. The problem I am having is the moment Service2 updates a record in Table1, the table is locked. The lock seems to be in place until Service2 has completed all it is processing. i.e. The lock is not released after my datacontext is disposed. This causes the query in Service1 to timeout. Once Service2 completes processing, Service1 resumes processing again without problem. So for example Service1 code may look like: int x =0; using (DataContext db = new DataContext()) { x = (from dp in db.Table1 select dp).Count(); // this line will timeout while service2 is processing Table1 t = new Table1(); t.Data = "test"; db.Table1.InsertOnSubmit(t); db.SubmitChanges(); } if(x % 50 == 0) CallService2(); The code in service2 may look like: using (DataContext db = new DataContext()) { Table1 t = db.Table1.Where(t => t.id == myId); t.Data = "updated"; db.SubmitChanges(); } // I would have expected the lock to have been released at this point, but this is not the case. DoSomeLongRunningTasks(); // lock will be released once service2 exits I don't understand why the lock is not released when the datacontext is disposed in Service2. To get around the problem I have been calling: db.ExecuteCommand("SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED"); and this works, but I am not happy using it. I want to solve this problem properly. Has any one experienced this sort of problem before and does any one know how to solve it? Why is the lock not released after the datacontext has been disposed? Thanks in advance. p.s. sorry for the extremely long post.

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