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• Cant create 2nd textbox

  - by okinaw55

  Having problems with this code and cant figure out why. It works fine the first time through but crashes with a Parameter is not Valid error the 2nd time on this line. Dim tbx As TextBox = New Windows.Forms.TextBox Any help is appreciated. Dim tbx As TextBox = New Windows.Forms.TextBox tbx.Name = tbxName tbx.Size = New System.Drawing.Size(55, 12) tbx.BorderStyle = BorderStyle.None tbx.TextAlign = HorizontalAlignment.Center Using f As Font = tbx.Font tbx.Font = New Font(f.FontFamily, 8, FontStyle.Bold) End Using tbx.Location = New System.Drawing.Point(xCords, 44) Select Case tbx.Name Case "tbxBulk01" : tbx.Text = Bulk01Label Case "tbxBulk02" : tbx.Text = Bulk02Label End Select Me.Controls.Add(tbx) Stack trace as follows. at System.Drawing.Font.GetHeight(Graphics graphics) at System.Drawing.Font.GetHeight() at System.Drawing.Font.get_Height() at System.Windows.Forms.Control.get_FontHeight() at System.Windows.Forms.TextBoxBase.get_PreferredHeight() at System.Windows.Forms.TextBoxBase.get_DefaultSize() at System.Windows.Forms.Control..ctor(Boolean autoInstallSyncContext) at System.Windows.Forms.TextBoxBase..ctor() at System.Windows.Forms.TextBox..ctor()

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• LINQ: why does this query not work on an ArrayList?

  - by Benny

  public static ArrayList GetStudentAsArrayList() { ArrayList students = new ArrayList { new Student() { RollNumber = 1,Name ="Alex " , Section = 1 ,HostelNumber=1 }, new Student() { RollNumber = 2,Name ="Jonty " , Section = 2 ,HostelNumber=2 } }; return students; } The following code doesn't compile. The error is ArrayList is not IEnumerable ArrayList lstStudents = GetStudentAsArrayList(); var res = from r in lstStudents select r; This compiles: ArrayList lstStudents = GetStudentAsArrayList(); var res = from Student r in lstStudents select r; Can anybody explain what the difference is between these two snippets? Why the second works?

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• LINQ-to-SQL and SQL Compact - database file sharing problem

  - by Eye of Hell

  Hello. I'm learing LINQ-to-SQL right now and i have wrote a simple application that define SQL data: [Table( Name = "items" )] public class Item { [ Column( IsPrimaryKey = true, IsDbGenerated = true ) ] public int Id; [ Column ] public string Name; } I have launched 2 copy of application connected to the same .sdf file and tested if all database modifications in one application affects another application. But strange thing arise. If i use InsertOnSubmit() and DeleteOnSubmit() in one application, added/removed items are instantly visible in other application via 'select' LINQ queue. But if i try to modify 'Name' field in one application, it is NOT visible in other applicaton until it reconnects the database :(. The test code i use: var Items = from c in db.Items where Id == c.Id select c; foreach( var Item in Items ) { Item.Name = "new name"; break; } db.SubmitChanges(); Can anyone suggest what i'm doing wrong and why InsertOnSubmit()/DeleteOnSubmit works and SubmitChanges() don't?

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• Unable to call WMP's controls.play() function in VisualBasic

  - by A.J.

  I have the following code: http://pastebin.com/EgjbzqA2 which is basically just a stripped down version of http://www.dreamincode.net/forums/topic/57357-mymusic-player/. I want the program to play one file repeatedly, however, this function doesn't work for some reason. The program plays each file once and then stops. Private Sub Player3_PlayStateChange(ByVal NewState As Integer) Handles Player3.PlayStateChange Static Dim PlayAllowed As Boolean = True Select Case CType(NewState, WMPLib.WMPPlayState) Case WMPLib.WMPPlayState.wmppsReady If PlayAllowed Then Player3.controls.play() End If Case WMPLib.WMPPlayState.wmppsMediaEnded ' Start protection (without it next wouldn't play PlayAllowed = False ' Play track Player3.controls.play() ' End Protection PlayAllowed = True updatePlayer() End Select End Sub

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• How to click through JGlassPane With MouseListener to UI behind it

  - by Epicmaster

  I have a JFrame and a bunch of JComponents on top of the JFrame. I need to make use of the JGlassPane and I used this implementation to set it up. JPanel glass = new JPanel(); frame.setGlassPane(glass); glass.setVisible(true); glass.setOpaque(false); After doing so I can't select any JButtons or other JComponents under the JGlassPane. Is there a way to have only the components on the GlassPane selectable while still having the ability to select components under the GlassPane? Edit I forgot to mention (not knowing this would be relevant) that I did attach both a MouseListener and a MouseMotionListener to the glass pane. Is there a way to pass the Mouse Events to other components and only use them when needed?

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• LINQ to SQL Translation

  - by Ben

  Hi, Depending on how I map my linq queries to my domain objects, I get the following error The member 'member' has no supported translation to SQL. This code causes the error: public IQueryable<ShippingMethod> ShippingMethods { get { return from sm in _db.ShippingMethods select new ShippingMethod( sm.ShippingMethodID, sm.Carrier, sm.ServiceName, sm.RatePerUnit, sm.EstimatedDelivery, sm.DaysToDeliver, sm.BaseRate, sm.Enabled ); } } This code works fine: public IQueryable<ShippingMethod> ShippingMethods { get { return from sm in _db.ShippingMethods select new ShippingMethod { Id = sm.ShippingMethodID, Carrier = sm.Carrier, ServiceName = sm.ServiceName, EstimatedDelivery = sm.EstimatedDelivery, DaysToDeliver = sm.DaysToDeliver, RatePerUnit = sm.RatePerUnit, IsEnabled = sm.Enabled, BaseRate = sm.BaseRate }; } } This is my testmethod I am testing with: [TestMethod] public void Test_Shipping_Methods() { IOrderRepository orderRepo = new SqlOrderRepository(); var items = orderRepo.ShippingMethods.Where(x => x.IsEnabled); Assert.IsTrue(items.Count() > 0); } How does the way in which I instantiate my object affect the linq to sql translation? Thanks Ben

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• hibernate show real sql

  - by tommaso

  Hi all, if I set <property name="show_sql">true</property> in my hibernate.cfg.xml configuration file in the console I can see the sql. But it's not REAL sql... Can I see the SQL code that will be passed directly to database? Example: I see select this_.code from true.employee this_ where this_.code=? Can I see select employee.code from employee where employee.code=12 the real sql? thanks!

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• XSL: Get variable data without exslt:node-set

  - by Louis W

  Using native XSL lib in PHP. Is it possible to get a node value inside a variable without having to call it through exslt:node-set every time.... it long and ugly. <xsl:variable name="mydata"> <foo>1</foo> <bar>2</bar> </xsl:variable> <!-- How currently being done --> <xsl:value-of select="exslt:node-set($mydata)/foo" /> <!-- I want to be able to do this --> <xsl:value-of select="$mydata/foo" />

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• Complicated idea - how to create car racing for my RPG game's players

  - by Donator

  So, I want to create car racing for my RPG game's players. Player can create race and choose how many participants can participate in race. After race is being created, other people can join it. When the maximum participants are collected, race begins. My idea, when the last participant joins, then instantly choose the winner (who's car is the best, that person wins), but how can I do it? If I choose to pick the winner after the last participant joins, then I have to put many queries in one page (select data from table, then delete the race, then select players' cars' statistics and pick the winner and then again, using mysql, send message to everyone). But this idea is really not optimal and it will lag cruelly for that last person. Maybe you have any ideas how I can avoid lag and make it more optimal. Thank you very much.

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• PostgreSQL - best way to return an array of key-value pairs

  - by Matt W

  I'm trying to select a number of fields, one of which needs to be an array with each element of the array containing two values. Each array item needs to contain a name (character varying) and an ID (numeric). I know how to return an array of single values (using the ARRAY keyword) but I'm unsure of how to return an array of an object which in itself contains two values. The query is something like SELECT t.field1, t.field2, ARRAY(--with each element containing two values i.e. {'TheName', 1 }) FROM MyTable t I read that one way to do this is by selecting the values into a type and then creating an array of that type. Problem is, the rest of the function is already returning a type (which means I would then have nested types - is that OK? If so, how would you read this data back in application code - i.e. with a .Net data provider like NPGSQL?) Any help is much appreciated.

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• Comparing COUNT values within a query?

  - by outsyncof

  I have the following tables in a relation: person(ssn,sex) employment(ssn,workweeksperyear) assume ssn is a key. My assignment was to do this: Given as input the number of weeks per year a person has worked, determine whether there are more males than females who work more weeks than the input value. SELECT COUNT(sex) AS NumMales FROM person WHERE sex = 'Male' AND ssn IN (SELECT ssn FROM employment WHERE workweeksperyear > 48); The above query gets me the number of males for an input value and I could do the same for number of females but how do I compare the 2 results? Any help will be greatly appreciated!

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• How to access stdClass variables stdClass Object([max(id)])=>64)

  - by Theopile

  I need the very last valid entry in a database table which would be the row with the greatest primary key. So using mysqli, my query is "SELECT MAX(id) FROM table LIMIT 1". This query returns the correct number(using print_r()) but I cannot figure out how to access it. Here is the main code. Note that the $this-link refers to class with a mysqli connection. $q="select max(id) from stones limit 1"; $qed=$this->link->query($q) or die(mysqli_error()); if($qed){ $row=$qed->fetch_object(); print_r($row); echo $lastid=$row;//here is the problem } The valid line print_r($row) echos out "stdClass Object ( [max(id)] = 68 )"

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• How would you sample a real-time stream of coordinates to create a Speed Graph?

  - by Andrew Johnson

  I have a GPS device, and I am receiving continuous points, which I store in an array. These points are time stamped. I would like to graph distance/time (speed) vs. distance in real-time; however, I can only plot 50 of the points because of hardware constraints. How would you select points from the array to graph? For example, one algorithm might be to select every Nth point from the array, where N results in 50 points total. Code: float indexModifier = 1; if (MIN(50,track.lastPointIndex) == 50) { indexModifier = track.lastPointIndex/50.0f; } index = ceil(index*indexModifier); Another algorithm might be to keep an array of 50 points, and throw out the point with the least speed change each time you get a new point.

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• NHibernate Lazy="Extra"

  - by Adam Rackis

  Is there a good explanation out there on what exactly lazy="extra" is capable of? All the posts I've seen all just repeat the fact that it turns references to MyObject.ItsCollection.Count into select count(*) queries (assuming they're not loaded already). I'd like to know if it's capable of more robust things, like turning MyObject.ItsCollection.Any(o => o.Whatever == 5) into a SELECT ...EXISTS query. Section 18.1 of the docs only touches on it. I'm not an NH developer, so I can't really experiment with it and watch SQL Profiler without doing a bit of work getting everything set up; I'm just looking for some sort of reference describing what this feature is capable of. Thank you!

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• Windows Azure : suivez le streaming du Dev Camp en direct sur Developpez.com

  Le 20 juin aura lieu la journée Dev Camp consacrée à Azure. [IMG]http://i.msdn.microsoft.com/hh868108.azure-camps(fr-fr,MSDN.10).png[/IMG] Cette journée est l'occasion de découvrir tous les services Cloud d'Azure (SQL Azure, Stockage avec Windows Azure Storage, Back-end, etc.), d'apprendre comment réaliser des projets et héberger des applications ? ou des sites webs - sur la plateforme. L'Azure Dev Camp abordera également les applications multi-tiers et la manière de « migrer, intégrer et étendre votre code et vos applications existantes grâce à Windows Azure ». Cette journée abordera aussi la construction d'APIs Web pour enrichir des applications mobiles iOS, Android et bien sûr Windows Phone. Enfin, le rendez-vous...

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• Optimizing ROW_NUMBER() in SQL Server

  - by BlueRaja

  We have a number of machines which record data into a database at sporadic intervals. For each record, I'd like to obtain the time period between this recording and the previous recording. I can do this using ROW_NUMBER as follows: WITH TempTable AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY Machine_ID ORDER BY Date_Time) AS Ordering FROM dbo.DataTable ) SELECT [Current].*, Previous.Date_Time AS PreviousDateTime FROM TempTable AS [Current] INNER JOIN TempTable AS Previous ON [Current].Machine_ID = Previous.Machine_ID AND Previous.Ordering = [Current].Ordering + 1 The problem is, it goes really slow (several minutes on a table with about 10k entries) - I tried creating separate indicies on Machine_ID and Date_Time, and a single joined-index, but nothing helps. Is there anyway to rewrite this query to go faster?

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• Gradle in NetBeans IDE 7.3 Beta

  - by Geertjan

  Installed Attila Kelemen's Gradle plugin in NetBeans IDE 7.3 Beta today: http://plugins.netbeans.org/plugin/44510/gradle-support Not only can existing Gradle projects now be opened, i.e., any folder with a build.gradle file: ...but single Gradle projects as well as multi module Gradle projects can be created: What you see below is the result of using the "Gradle Root Project" template once, followed by the "Gradle Subproject" twice within the folder where the root project was created: Pretty cool stuff. Where's the documentation for the plugin? Here: https://github.com/kelemen/netbeans-gradle-project Read it, some handy tips and tricks are provided there.

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• Using COALESCE to avoid dynamic SQL ?

  - by krul

  I would like to use following sql to avoid constructing sql dynamically: SELECT CommentID, Comment, FROM Comments --if Author id is not null then filter upon author id otherwise get all comments (ignore author id) WHERE AuthorID LIKE COALESCE(@AuthorId, '%') --if comment type is present filter upon it, otherwise get all comments (ignore comment type condition) AND CommentType LIKE COALESCE(@CommentType, '%') I want to know is that safe way to approach this problem? EDIT: Here is final code that satisfy my need to ignore search parameter if is null and applied it if is present: SELECT CommentID, Comment, FROM Comments --if @AuthorId is not null then filter upon @AuthorId otherwise get all comments (ignore author id) WHERE AuthorID = COALESCE(@AuthorId, AuthorID) --if @CommentType is present filter upon it, otherwise get all comments (ignore comment type condition) AND CommentType = COALESCE(@CommentType, CommentType)

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• How do I improve the efficiency of the queries executed by this generic Linq-to-SQL data access clas

  - by Lee D

  Hi all, I have a class which provides generic access to LINQ to SQL entities, for example: class LinqProvider<T> //where T is a L2S entity class { DataContext context; public virtual IEnumerable<T> GetAll() { return context.GetTable<T>(); } public virtual T Single(Func<T, bool> condition) { return context.GetTable<T>().SingleOrDefault(condition); } } From the front end, both of these methods appear to work as you would expect. However, when I run a trace in SQL profiler, the Single method is executing what amounts to a SELECT * FROM [Table], and then returning the single entity that meets the given condition. Obviously this is inefficient, and is being caused by GetTable() returning all rows. My question is, how do I get the query executed by the Single() method to take the form SELECT * FROM [Table] WHERE [condition], rather than selecting all rows then filtering out all but one? Is it possible in this context? Any help appreciated, Lee

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• Registration Open Now! Virtual Developer Day: Oracle ADF Development

  - by Greg Jensen

  Is your organization looking at developing Web or Mobile application based upon the Oracle platform?  Oracle is offering a virtual event for Developer Leads, Managers and Architects to learn more about developing Web, Mobile and beyond based on Oracle applications. This event will provide sessions that range from introductory to deep dive covering Oracle's strategic framework for developing multi-channel enterprise applications for the Oracle platforms. Multiple tracks cover every interest and every level and include live online Q&A chats with Oracle's technical staff.   For Registration and Information, please follow the link HERE Sign up for one of the following events below Americas - Tuesday - November 19th / 9am to 1pm PDT / 12pm to 4pm EDT / 1pm to 5pm BRT APAC - Thursday - November 21st / 10am - 1:30pm IST (India) / 12:30pm - 4pm SGT (Singapore) / 3:30pm -7pm AESDT EMEA - Tuesday - November 26th / 9am - 1pm GMT / 1pm - 5pm GST / 2:30pm -6:30pm IST

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• Setting xsl:value-of into an href attribute and the text field of a link in an XSLT

  - by Josh

  I am trying to set an a href that is both a link to and has the text for a link through an XSLT transformation. Here's what it looks like so far. <xsl:element name="a"> <xsl:attribute name="href"> <xsl:value-of select="actionUrl"/> </xsl:attribute> <xsl:text><xsl:value-of select="actionUrl"/></xsl:text> </xsl:element> The problem is that it says "xsl:value-of cannot be a child of the xsl:text element". Any ideas?

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• Grails Remote Function and Ajax

  - by WaZ

  I am trying to list addresses and onChange event I send the address ID and return a list of users. <g:select name="AddressID" from="${address}" optionKey="id" optionValue="address" onchange="${ remoteFunction(action:'testMe', params:'\'id=\' + this.value' ,update:'show' )}"> </g:select> I call this div "show". <div id="show"> <g:each in="${users}" status="i" var="C"> <h3>${C}</h3> </g:each> </div> However, when I click the item on the list box I get the following error: description The requested resource (/MyTest/WEB-INF/grails-app/views/test/testMe.jsp) is not available. My understanding of an update attribute inside a remoteFunction is that it is the name of the div which gets refreshed after the remoteFunction call is compeleted. Thanks.

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• Unable to convert MySQL date/time value to System.DateTime

  - by Sri Kumar

  Hello I am using ibatis and C#. i get a result from a select query that has CreatedDate as one of the field. The Datatype of CreatedDate in Mysql is Date. I assign the result set of the select query to a Ilist< DeliveryClass **. Here the DeliveryClass CreatedDate as DateTime. When i run the application, i get **Unable to convert MySQL date/time value to System.DateTime. What could be the problem?

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• Using a table-alias in Kohana queries?

  - by Aristotle

  I'm trying to run a simple query with $this->db in Kohana, but am running into some syntax issues when I try to use an alias for a table within my query: $result = $this->db ->select("ci.chapter_id, ci.book_id, ci.chapter_heading, ci.chapter_number") ->from("chapter_info ci") ->where(array("ci.chapter_number" => $chapter, "ci.book_id" => $book)) ->get(); It seems to me that this should work just fine. I'm stating that "chapter_info" ought to be known as "ci," yet this isn't taking for some reason. The error is pretty straight-forward: There was an SQL error: Table 'gb_data.chapter_info ci' doesn't exist - SELECT `ci`.`chapter_id`, `ci`.`book_id`, `ci`.`chapter_heading`, `ci`.`chapter_number` FROM (`chapter_info ci`) WHERE `ci`.`chapter_number` = 1 AND `ci`.`book_id` = 1 If I use the full table name, rather than an alias, I get the expected results without error. This requires me to write much more verbose queries, which isn't ideal. Is there some way to use shorter names for tables within Kohana's query-builder?

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• How to display all the dates between two given dates in SQL

  - by Gopal

  Using SQL server 2000. If the Start date is 06/23/2008 and End date is 06/30/2008 Then I need the Output of query as 06/23/2008 06/24/2008 06/25/2008 . . . 06/30/2008 I Created a Table names as Integer which has 1 Column, column values are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 then I used the below mentioned query Tried Query SELECT DATEADD(d, H.i * 100 + T .i * 10 + U.i, '" & dtpfrom.Value & "') AS Dates FROM integers H CROSS JOIN integers T CROSS JOIN integers U order by dates The above query is displaying 999 Dates only. 999 Dates means (365 + 365 + 269) Dates Only. Suppose I want to select more than 3 Years (01/01/2003 to 01/01/2008). The above query should not suitable. How to modify my query? Or any other query is available for the above condition. Please kindly provide me the Query.

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