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  • Ensure connection to a POSPrinter connected via COM

    - by Alexander
    Hi, I need to make sure that the connection to a POS printer is successful before writing data to the database and then printing a receipt. The POSprinter is normally of type BTP 2002NP but may differ. The common thing is that they are all connected via COM-port and NOT usb, so no drivers installed at all on the client. Can I send some kind of "ping" on a COM-port and check if a device is connected and turned on? Any help or suggestions are very much appreciated. Additional information, the application is developed in VB.net and Visual Studio 2008

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  • How can I turn a bunch of rows into aggregated columns WITHOUT using pivot in SQL Server 2005?

    - by cdeszaq
    Here is the scenario: I have a table that records the user_id, the module_id, and the date/time the module was viewed. eg. Table: Log ------------------------------ User_ID Module_ID Date ------------------------------ 1 red 2001-01-01 1 green 2001-01-02 1 blue 2001-01-03 2 green 2001-01-04 2 blue 2001-01-05 1 red 2001-01-06 1 blue 2001-01-07 3 blue 2001-01-08 3 green 2001-01-09 3 red 2001-01-10 3 green 2001-01-11 4 white 2001-01-12 I need to get a result set that has the user_id as the 1st column, and then a column for each module. The row data is then the user_id and the count of the number of times that user viewed each module. eg. --------------------------------- User_ID red green blue white --------------------------------- 1 2 1 2 0 2 0 1 1 0 3 1 2 1 0 4 0 0 0 1 I was initially thinking that I could do this with PIVOT, but no dice; the database is a converted SQL Server 2000 DB that is running in SQL Server 2005. I'm not able to change the compatibility level, so pivot is out. How can I accomplish this?

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  • Kohana input & validation libraries - overlap?

    - by keithjgrant
    I'm familiarizing myself with Kohana. I've been reading up on the Input library, which automatically pre-filters GET and POST data for me, and the Validation libary, which helps with form validation. Should I use both together? The examples given in the Validation library documentation use the unfiltered $_POST array instead of $this->input->post(). Seems to me it would be more secure to chain the two, but the two sets of documentation seem to make no mention of each other, so I don't know if this would be redundant or not.

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  • ADO.NET Entity Framework: Can I have multiple entity types for the same row.

    - by black_nm
    Hi all, I have a base class Participants inherited by Artist, Author and TextWriter. I have only one table in the data store: Participants { ID, FirstName, LastName, IsArtist, IsAuthor, IsTextWriter, } The idea is to have a class for all the roles that a participant can have. I've managed to create the edmx file but when I try to get an Participant (as Artist) that is also an Author I receive the following error: All objects in the EntitySet 'Participants' must have unique primary keys. However, an instance of type 'Artist' and an instance of type 'Author' both have the same primary key value, 'EntitySet=Participants;ID=1'. Thank you

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  • How do I load content with ujs, jquery and rails?

    - by Joseph Silvashy
    I'm trying to figure out the best way to insert content into a light box using rails UJS. I have a link that looks like this: <%= link_to "login", login_path, :remote => true %> Which produces html as such: <a data-remote="true" href="/login">login</a> So this all works great, and I've created the view file: user_sessions/new.js.erb which also loads just fine, but my question what is the preferred method of inserting appending the html into the page? Like I already have the login form on the non-js page, so can't I just load that partial into the page? Any ideas would be very welcomed.

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  • Building Asp.net Page code behind correctly

    - by Hagai
    Hi everyone, I need some guidelines about building the code behind of my pages correctly. I mean, I'm building in asp.net for a year now, and mostly using the Page_Load event. (and ofcourse "event handling" the events triggered by the user's actions). I know about the page life cycle and the order of events that happens when a page is requested etc.. . Is it normal that, generally, in a data-driven page, for example, I'm not using any of the "pre_render", "page_unload", "pre_init" etc.. event handlers? or am I missing something here? any guidelines would help me a lot, including links or whatever you think that would instruct me well. thanks.

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  • Please help get this msdn function working to create an auto complete method

    - by Phil
    Here is a method from msdn to provide data to an autocomplete extender / textbox: <System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()> _ Public Shared Function GetCompletionList(ByVal prefixText As String, ByVal count As Integer, ByVal contextKey As String) As String() ' Create array of movies Dim movies() As String = {"Star Wars", "Star Trek", "Superman", "Memento", "Shrek", "Shrek II"} ' Return matching movies Return From m In movies(6) Where _ (m.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase)) Select m).Take(count).ToArray() End Function The errors are: m.StartsWith - ('Startswith' is not a member of 'Char') Select m - ('Select Case' must end with a matching end select) .Take(count).ToArray() - (End of statement expected) Can you please let me know how to get this function working? Thanks

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  • My code works in Debug mode, but not in Release mode.

    - by Nima
    Hi, I have a code in Visual Studio 2008 in C++ that works with files just by fopen and fclose. Everything works perfect in Debug mode. and I have tested with several datasets. But it doesn't work in release mode. It crashes all the time. I have turned off all the optimizations, also there is no dependency to anything(in the linker), and also I have set these: Optimization: Disabled(/Od) Keep Unreferenced Data. Do Not Remove Redundant Optimize for Windows98: NO I still keep wondering how it should not work under these circumstances. What else should I turn off to let it works as in debug mode? I think if it works in release mode but not in debug mode, it might be a coding fault but the other way looks weird. isn't it? I appreciate any help. --Nima

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  • how to consume .net webservices

    - by Rajesh Rolen- DotNet Developer
    please tell that can we consume .net web services in php or not. if yes then please tell me how can we do it. i am to create a web service which takes values and save it in database also it will take values and reply some data as a standard xml format. i know how to create web service and how to use it in asp.net but don't know how to use/call it from php. thing is that i will not be writing code in php to consume but wants to know that do i need to take care of any special thing or need to do some extra code to make it available and use by php developers. i am to create web service in .net framework 2.0 Thanks

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  • Can't print elements in a DIV tag

    - by Mckenzi
    I am using a Drag-able and re-sizeable DIV's in this HTML file. Where the user will place the DIV tag to his desired place in a main parent DIV tag. Now I want to print this main DIV tag, but the problem is that the code which I'm using to PRINT this main DIV is printing in a sequence, like not the way user has arranged the DIV's. Also it doesn't take up the main DIV background IMAGE. here is the code. JAVASCRIPT & CSS <link rel="stylesheet" type="text/css" href="byrei-dyndiv_0.5.css"> <script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.1.min.js" > </script> <script type="text/javascript" src="byrei-dyndiv_1.0rc1.js"></script> <script language="javascript" type="text/javascript"> function change(boxid,divtoaffect) { content = document.getElementById("" + boxid + "").value.replace(/\n/g, '<br>'); document.getElementById(divtoaffect).innerHTML = content; } function select1() { test=document.getElementById("changeMe"); test.style.backgroundImage="url('Sunset.jpg')"; } function select2() { test=document.getElementById("changeMe"); test.style.backgroundImage="url('Blue hills.jpg')"; } function PrintElem(elem) { Popup($(elem).text()); } function Popup(data) { var mywindow = window.open('', 'my div', 'height=400,width=600'); mywindow.document.write('<html><head><title>my div</title>'); /*optional stylesheet*/ //mywindow.document.write('<link rel="stylesheet" href="main.css" type="text/css" />'); mywindow.document.write('</head><body >'); mywindow.document.write(data); mywindow.document.write('</body></html>'); mywindow.document.close(); mywindow.print(); return true; } // Print DIV function printContent(id){ str=document.getElementById(id).innerHTML newwin=window.open('','printwin','left=100,top=100,width=400,height=400') newwin.document.write('<HTML>\n<HEAD>\n') newwin.document.write('<TITLE>Print Page</TITLE>\n') newwin.document.write('<script>\n') newwin.document.write('function chkstate(){\n') newwin.document.write('if(document.readyState=="complete"){\n') newwin.document.write('window.close()\n') newwin.document.write('}\n') newwin.document.write('else{\n') newwin.document.write('setTimeout("chkstate()",2000)\n') newwin.document.write('}\n') newwin.document.write('}\n') newwin.document.write('function print_win(){\n') newwin.document.write('window.print();\n') newwin.document.write('chkstate();\n') newwin.document.write('}\n') newwin.document.write('<\/script>\n') newwin.document.write('</HEAD>\n') newwin.document.write('<BODY onload="print_win()">\n') newwin.document.write(str) newwin.document.write('</BODY>\n') newwin.document.write('</HTML>\n') newwin.document.close() } </script> </head> <body> <style type="text/css"> #output1,#output2 ,#output3 { width: 300px; word-wrap: break-word; border: solid 1px black; } </style> HTML <div style="width:650px;height:300px;" id="changeMe" > <table cellpadding="5" cellspacing="0" width="100%" style="margin:auto;"> <tr> <td><div class="dynDiv_moveDiv" id="output1" style="font-weight:bold;height:20px;margin-top:40px;"> <div class="dynDiv_resizeDiv_tl"></div> <div class="dynDiv_resizeDiv_tr"></div> <div class="dynDiv_resizeDiv_bl"></div> <div class="dynDiv_resizeDiv_br"></div> </div> </td> </tr> <tr> <td><div class="dynDiv_moveDiv" id="output2" style="height:40px;margin-top:30px;"> <div class="dynDiv_resizeDiv_tl"></div> <div class="dynDiv_resizeDiv_tr"></div> <div class="dynDiv_resizeDiv_bl"></div> <div class="dynDiv_resizeDiv_br"></div> </div></td> </tr> <tr> <td><div class="dynDiv_moveDiv" id="output3" style="height:50px;margin-top:40px;"> <div class="dynDiv_resizeDiv_tl"></div> <div class="dynDiv_resizeDiv_tr"></div> <div class="dynDiv_resizeDiv_bl"></div> <div class="dynDiv_resizeDiv_br"></div> </div></td> </tr> </table> </div> <tr> <td align="center"><input type="button" value="Print Div" onClick="printContent('changeMe')" /> </td> </tr>

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  • transition of x-axis results in overflow

    - by peter
    First of all, no: this question is not about the (yet) ugly transition of the lines (I might open another one for that, though..). I'm displaying data in line charts and the user can select the time horizon. The x-axis then correspondingly transitions so as to fit to the changed time horizon. In attached image, e.g., the time horizon was 1 week and then I switched to 4 weeks. The number of ticks on the x-axis increases from 7 to 28, correspondingly. Question: How can I prevent the x-axis animation to display outside the svg container? As you can see, the additional dates fly in from the left and they are being animated far far outside the container. Any ideas? Right now, the transition works probably in the most simple way it could: // format for x-axis var xAxis = d3.svg.axis() .scale(x) .orient("bottom") .tickFormat(d3.time.format("%d.%m")) .ticks(d3.time.days, 1) .tickSubdivide(0); // Update x-axis svg.select(".x") .transition() .duration(500) .call(xAxis);

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  • Ruby Equivalent of Python Requests Library (HTTP Client)

    - by Hartator
    There is a library in python that I love called requests. requests is a http client build on urllib3, top-notch :) (http://docs.python-requests.org/en/latest/) I am looking for something similar in ruby, basically what I need is : Upload files support (multipart/form-data) Easy get/post Cookies can be passed from a response object to a request object (build manually login script) Stable and Flexible Sessions support (to not have to handle cookies manually if we don't have too) I've looked at Typhoeus, but the code example in the home page doesn't work (they have moved code along and the get method is not longer directly accessible like that), so it's not starting well! :) Curb seems nice and I like curl, there is alson RestClient which seems popular and em-http seems pretty fast according to benchmark. There is a aso Patron and CurlFu which I haven't have the time to try. And of course Net:Http. But it doesn't seems to have a main stream solution that everyone point. I think a lot of people have been in my situation and I wonder what they have choosen and why?

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  • When to release the model(representedObject) of the corresponding UIViewController.

    - by user313786
    Hi, In AppKit we have "representedObject" available through NSViewController, this representedObject is generally set to ModelController or the model which the NSViewController displays, this works great with bindings as you just set the new representedObject and model details are updated in the view, BUT in case of iPhone (UIKit, with NO Cocoa bindings available), there is no such representedObject in UIViewController so here are few things I am interested in knowing:- What is the best/recommended way of binding the model to the UIViewController?, preferably dont want to maintain lot of IBOutlets and calls setters to updated the changed model data for display in view. How/When should the related model of the UIViewController be released? When is the -[UIViewController dealloc] called, in the typical iPhone application. Am looking for architecting some classes so that the UIViewController coordinates between the view and the model, but at the same time, deallocs the model when ever not necessary. TIA.

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  • Mysql php error insert statement not working

    - by DAFFODIL
    I created database using mysql but now,i am unable to insert data,I am getting this error. Notice: Undefined index: Name in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Address in C:\wamp\www\customer.php on line 12 Notice: Undefined index: City in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Pincode in C:\wamp\www\customer.php on line 12 Notice: Undefined index: State in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Country in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Phone in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Mobile in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Fax in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Email in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Website in C:\wamp\www\customer.php on line 12 Notice: Undefined index: Notes in C:\wamp\www\customer.php on line 12 Error: Table 'form.customer' doesn't exist

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  • Correct usage of Voldemort as key-value pair?

    - by zengr
    Hello, I am trying to understand, how can Voldermort be used? Say, I have this scenario: Since, Voldemort is a key-value pair. I need to fetch a value (say some text) on the basis of 3 parameters. So, what will be the key in this case? I cannot use 3 keys for 1 value right, but that value should be search able on the basis of those 3 parameters. Am I making sense? Thanks EDIT1 eg: A blog system. A user posts a blog: User's data stored: Name, Age and Sex The blog content (text) is stored. Now, I need to use Voldemort here, if a user searches from the front end for all the blog posts by Sex: Male Then, my code should query voldemort and return all the "blog content (text)" which have Sex as Male.

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  • Ruby: How to loop through an object that may or may not be an array?

    - by Shpigford
    I have an each method that is run on some user-submitted data. Sometimes it will be an array, other times it won't be. Example submission: <numbers> <number>12345</number> </numbers> Another example: <numbers> <number>12345</number> <number>09876</number> </numbers> I have been trying to do an each do on that, but when there is only one number I get a TypeError (Symbol as array index) error.

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  • Why won't my anonymous function fire on grid.prerender?

    - by adam0101
    In my gridview I have fields for inserting a new record in the footer. In my objectdatasource selecting event if no records came back I bind a single mock row to force the footer to show so they can still add records. Since the row does not contain real data I hide the row. ... If result.ItemCount = 0 Then result = mockRow AddHandler mygridview.PreRender, AddressOf HideRow End If End Sub Private Sub HideRow(ByVal sender as Object, ByVal e as EventArgs) mygridview.Rows(0).Visible = False End Sub This works fine. However, I'd like to condense it like this: ... If result.ItemCount = 0 Then result = mockRow AddHandler mygridview.PreRender, Function() mygridview.Rows(0).Visible = False End If End Sub This compiles fine, but the row doesn't get hidden. Can anyone tell me why my anonymous function isn't getting hit?

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  • Inspect in memory hsqldb while debugging

    - by Albert
    We're using hdsqldb in memory to run junit tests which operate against a database. The db is setup before running each test via a spring configuration. All works fine. Now when a tests fails it can be convinient to be able to inspect the values in the in memory database. Is this possible? If so how? Our url is: jdbc.url=jdbc:hsqldb:mem:testdb;sql.enforce_strict_size=true The database is destroyed after each tests. But when the debugger is running the database should also still be alive. I've tried connecting with the sqldb databaseManager. That works, but I don't see any tables or data. Any help is highly appreciated!

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  • Lot of time spent with following waits 'SQL*Net message from client' and 'wait for unread message on

    - by Shravan
    My application that wraps around Oracle Data pump's executables IMPDP and EXPDP takes random amounts of time for the same work. On further investigation, I see it waiting for again random amounts of time with the event 'wait for unread message on broadcast channel'. This makes the application take anytime b/w 10 minutes to over an hour for the same work. I fail to understand if this has something to do with the way my application uses these executables, or it has got something to do with Load on my server or something totally alien to me.

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  • List the names of existing directories from .tgz file in a bash variable

    - by Tom
    I would like to find all the directories that are in a .tgz file and that already exist on the system and put the result in a bash variable. I have tried this: EXISTING=`for f in \`tar tzf $ARCHIVE\`; do if [ -d "/tmp/unpacked-data/\$f" ]; then echo \$f; fi; done` with no luck. If I echo the value of $f before the if in the loop, I get all the files, ie this works: EXISTING=`for f in \`tar tzf $ARCHIVE\`; do echo \$f; done` Can someone tell me why the \$f doesn't work in the if statement? Thanks, Tom

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  • Import received e-mails from Outlook to MSSQL database

    - by _simon_
    How can I automatically import some data from received e-mail from Outlook to MSSQL database? So, when I receive an e-mail (from a preset sender), Outlook should be able to run an external application with the subject and body as parameter. This application will then parse the body of the e-mail and send it to database. Is it possible to set this in 'Rules and alerts' in Outlook (I don't think so)? Or is it possible to do it with macros (an example would be nice). Or else...? I am using Microsoft Outlook 2007 (no Exchange Server), let's say, that incoming mail is from @gmail domain, the externam application would probably be a C# console application, database is SQL SERVER 2005.

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  • How to Access a Control present inside a DataTemplate

    - by Subhen
    Hi, I have Few TextBlock inside the Data template as follow: <DataTemplate> <StackPanel x:Name="stackPanelItems" Orientation="Horizontal"> <TextBlock x:Name="myTextBox" HorizontalAlignment="Center" VerticalAlignment="Top" FontSize="14" /> </StackPanel> </DataTemplate> Now we need to Make the myTextBox Collsapsed in some scenarios but dont want to use the loaded or click event and then access the control via sender. Can I used any other method or way? Thanks, Subhen

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  • ruby-gstreamer doesn't send EOS message

    - by Cheba
    I've managed to make it play sound but it never gets EOS message. And thus script never exits. require 'gst' main_loop = GLib::MainLoop.new pipeline = Gst::Pipeline.new "audio-player" source = Gst::ElementFactory.make "filesrc", "file-source" source.location = "/usr/share/sounds/gnome/default/alerts/bark.ogg" decoder = Gst::ElementFactory.make "decodebin", "decoder" conv = Gst::ElementFactory.make "audioconvert", "converter" sink = Gst::ElementFactory.make "alsasink", "output" pipeline.add source, decoder, conv, sink source >> decoder conv >> sink decoder.signal_connect "pad-added" do |element, pad, data| pad >> conv['sink'] end pipeline.bus.add_watch do |bus, message| puts "Message: #{message.inspect}" case message.type when Gst::Message::Type::ERROR puts message.structure["debug"] main_loop.quit when Gst::Message::Type::EOS puts 'End of stream' main_loop.quit end end pipeline.play begin puts 'Running main loop' main_loop.run ensure puts 'Shutting down main loop' pipeline.stop end

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  • "The provider is not compatible with the version of Oracle client"

    - by psyb0rg
    I just put my asp .net web service on a remote host. The service accesses an oracle db on my local machine. The service worked fine when it was running on localhost but since moving to a remote hos, I get The provider is not compatible with the version of Oracle client at Oracle.DataAccess.Client.OracleInit.Initialize() at Oracle.DataAccess.Client.OracleConnection..cctor() --- End of inner exception stack trace --- at Oracle.DataAccess.Client.OracleConnection..ctor(String connectionString) at.... I know the error is related to the data provider version running on the server/client. In my case, the only dll I referenced in the project was Oracle.DataAccess So how do I go about solving this? Note that I won't be able to change anything on the web host other than my own project. My local machine is running Oracle 11g Thanks.

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  • Can jQuery retrieve a file?

    - by danspants
    I have a django application that creates xls and txt files. I'm trying to create a button which sends a jQuery.get request to django, django then returns a freshly created file to jQuery which in turn pops open a save as dialog. My code looks like this: jQuery("#testButton").live("click",function() { jQuery.jGrowl("click"); jQuery.get("/filetest",function(data){}); }); <div id="testButton" class="button">CLICK TO TEST</div> Getting the file to jQuery is easy, but I have no idea how to then raise a Save As dialog. Any assistance would be fantastic!

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