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• dynamically updating a datagrid from a XML file c# 3.5

  - by Farstucker

  I have a datagrid that is populated via XML file when the form loads. Everything is working great but I would like the datagrid to update dynamically when a new order is received (Separate class receives a data stream and updates the file). Im looking for suggestions on how this should be done. (ie using a timer update every second, or monitor the file using FileSystemWatcher.. etc) Since where here, I might as well mention that in order to update the datagrid Im clearing the whole data set and Re-reading the file using: DataSet.Clear(); DataSet.ReadXml("file.xml"); dataGridView1.DataSource = DataSet; if this is not the proper approach, please offer any alternate suggestions.

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• is there such a thing as xsl:fo reporting or xsl:fo simulation?

  - by topmulch

  Hi, I am trying to determine if MY xsl:fo generated PDF file will exceed one page or not, without actually generating the output. We use Apache-FOP 0.95 on our server, and the XML data is being generated using a PHP DOMDocument class before being passed onto an XSL-FO template. My question: Are there PHP libraries out there that can simulate xsl:fo output and send me reports that I can use in my application? Alternatively, is there a way for the Apache FOP itself (or sibling Java app) that sends reports without actually generating a file? I have been reading the FOP documentation, and aside from some things I can not fully understand, I have not been able to find a way to do that from within FOP. Any advice is much appreciated.

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• Custom keys for Google App Engine models (Python)

  - by Cameron

  First off, I'm relatively new to Google App Engine, so I'm probably doing something silly. Say I've got a model Foo: class Foo(db.Model): name = db.StringProperty() I want to use name as a unique key for every Foo object. How is this done? When I want to get a specific Foo object, I currently query the datastore for all Foo objects with the target unique name, but queries are slow (plus it's a pain to ensure that name is unique when each new Foo is created). There's got to be a better way to do this! Thanks.

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• Sort a 2D Points List (first by X and then Y)

  - by Mikos

  I am trying to sort a List of 2D Points first by x co-ordinate and then by y co-ordinate. I implemented the IComparer interface as follows: class PointComparer : IComparer<Point> { public int Compare(Point x, Point y) { if (x.Y != y.Y) { return x.Y - y.Y; } else { return x.X - y.X; } } } And then call my sorting as follows: pointsList.Sort(new PointComparer()); For some reason the list doesn't sort. Surely is something very simple and silly, but stuck on this for quite a while....TIA

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• initializer_list in the VC10

  - by user335870

  hi i wrote this program in VC++ 2010: class class1 { public: class1 (initializer_list<int> a){}; int foo; float Bar; }; void main() { class1 c = {2,3}; getchar(); } but i get this errors when i compile project: Error 1 error C2552: 'c' : non-aggregates cannot be initialized with initializer list c:\users\pswin\documents\visual studio 2010\projects\test_c++0x\test_c++0x\main.cpp 27 and 2 IntelliSense: initialization with '{...}' is not allowed for object of type "class1" c:\users\pswin\documents\visual studio 2010\projects\test_c++0x\test_c++0x\main.cpp 27 what is the problem?

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• modx revo snippet variable in query

  - by Meddie

  I noticed something weird when using a query in a snippet. When I have a query like this: $sql = 'SELECT * FROM table WHERE colomn = ' . $variable; And I echo $sql, the query reads: SELECT * FROM table WHERE colomn = <code class="php plain">2</code> .. wich will result in an error because the sql is no longer valid. So for now I use strip_tags to remove the code tag, but I find it not a very clean method. I couldnt find anything about this, so maybe someone can shed some light on this for me?

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• Can I Automap a tree hierarchy with Fluent NHibernate?

  - by NakChak

  Is it possible to auto map a simple nested object structure? Something like this: public class Employee : Entity { public Employee() { this.Manages = new List<Employee>(); } public virtual string FirstName { get; set; } public virtual string LastName { get; set; } public virtual bool IsLineManager { get; set; } public virtual Employee Manager { get; set; } public virtual IList<Employee> Manages { get; set; } } It causes the following error at run time: Repeated column in mapping for collection: SharpKtulu.Core.Employee.Manages column: EmployeeFk Is it possible to automap this sort of structure, or do I have override the auto mapper for this sort of structure?

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• Making a Link Appear if a Condition is Met

  - by John

  Hello, The PHP code below echoes a link if the "loginid" of the logged-in user is on a list determined by getEditorList();. It works fairly well, but I think it might work better if I were to do it with Javascript instead. How could I accomplish the same thing with Javascript? Thanks in advance, John $editors = getEditorsList(); foreach($editors as $editor) { $editorids[] = $editor['loginid']; } if(in_array($_SESSION['loginid'], $editorids)) { echo "<div class='footervote'><a href='http://www...com/.../footervote.php'>Vote</a></div>"; } Login function: <?php if (!isLoggedIn()) { if (isset($_POST['cmdlogin'])) { if (checkLogin($_POST['username'], $_POST['password'])) { show_userbox(); } else { echo "Incorrect Login information !"; show_loginform(); } } else { show_loginform(); } } else { show_userbox(); } ?>

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• How can I push a string from one client connected to a WCF service to another connected as well?

  - by Sergio Tapia

  Here's what I have so far: IService: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; namespace ServiceLibrary { [ServiceContract(SessionMode = SessionMode.Allowed, CallbackContract = typeof(IServiceCallback))] public interface IService { [OperationContract(IsOneWay = false, IsInitiating = true, IsTerminating = false)] void Join(string userName); } interface IServiceCallback { [OperationContract(IsOneWay = true)] void UserJoined(string senderName); } } Service: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ServiceModel; namespace ServiceLibrary { [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Multiple)] public class Service:IService { IServiceCallback callback = null; public void Join(string userName) { callback = OperationContext.Current.GetCallbackChannel<IServiceCallback>(); } } } Just a simple string passed from one client to another.

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• Help needed to convert code from C# to Python.

  - by Ali

  Can you please convert this code from C# to Python to be run on IronPython? I don’t have any experience with Python. using System; using Baz; namespace ConsoleApplication { class Program { static void Main() { Portal foo = new Portal("Foo"); Agent bar = new Agent("Bar"); foo.Connect("127.0.0.1", 1234); foo.Add(bar); bar.Ready += new Agent.ReadyHandler(bar_Ready); } static void bar_Ready(object sender, string msg) { Console.WriteLine(msg.body); } } }

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• calling std::cout.rdbuf() produces syntax error

  - by Mikepote

  Maybe I missed something, but I cant figure out why Visual Studio 2008 isn't seeing the rdbuf() procedure. Here is my code: 16. #include "DebugBuffer/BufferedStringBuf.h" 17. 18. BufferedStringBuf debug_buffer(256); 19. std::cout.rdbuf(&debug_buffer); The BufferedStringBuf class is from this page: http://www.devmaster.net/forums/showthread.php?t=7037 Which produces the following error: ...src\main.cpp(19) : error C2143: syntax error : missing ';' before '.' All I want to do is redirect std::cout to the Visual Studio Output window using OutputDebugString()..

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• .NET: Split web application into multiple DLLs?

  - by aximili

  Is it possible to compile some code-behind (.cs) files (eg. all .cs file under a particular folder) into one DLL, and the rest into another DLL? We have some common codes and pages (aspx + cs files) that we want to use across many websites. We want this to compile into a DLL (eg. Common.dll). The rest of the files will be website-specific, unique to each website and should compile into another DLL (eg. Website3.dll) This is so that if we make changes to a common code-behind, we can just publish Common.dll onto all our websites. Is that possible using VS Web Developer Express 2008? Thanks in advance. EDIT: We are already using a class library, but not for pages (aspx+cs)

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• How can I create numbered map markers in Google Maps V3?

  - by kaneuniversal

  I'm working on a map that has multiple markers on it. These markers use a custom icon, but I'd also like to add numbers on top. I've seen how this has been accomplished using older versions of the API. How can I do this in V3? *Note -- the "title" attribute creates a tooltip when you mouseover the marker, but I want something that will be layered on top of the custom image even when you're not hovering on top of it. Here's the documentation for the marker class, and none of these attributes seem to help: http://code.google.com/apis/maps/documentation/v3/reference.html#MarkerOptions Thank you . . . . Michael

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• Observer not clearing cache in Rails 2.3.2 - please help.

  - by Jason

  Hi, We are using Rails 2.3.2, Ruby 1.8 & memcache. In my Posts controller I have: cache_sweeper Company::Caching::Sweepers::PostSweeper, :only => [:save_post] I have created the following module: module Company module Caching module Sweepers class PostSweeper < ActionController::Caching::Sweeper observe Post def after_save(post) Rails.cache.delete("post_" + post.permalink) end end end end end but when the save_post method is invoked, the cache is never deleted. Just hoping someone can see what I am doing wrong here. Thanks.

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• How to check if CAB file is downloaded by a user in Internet Explorer

  - by balalakshmi

  I have a page that hosts CAB file like the one below <object id="SOmeID" class="Class1" codebase="..\CAB\Client.cab#version=2,0,0,2" classid="clsid:SomeIDComeshere" VIEWASTEXT > When this page is browsed the first time, there is a message to download the CAB file and is upto the user's choice to download or not Some users prefer not to download. Due to this certain pages are not rendered correctly or do not function as they are expected to. My question: When client call up to report an issue, how do I check if they have downloaded the cab file or not? Is there any windows folders i need to check for?

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• JQuery: which element was clicked?

  - by centr0

  I have a list with links. These links are links to tables on the same page. What I want to do is whatever link I click in the list it will show its corresponding table and hide all the others. Without adding a different id/class to each link in the list and its corresponding table, is there a way to find out which element was clicked and show() its table? From what I understand JQuery returns an array object on its selector. How can I find out what element of the array was clicked? I've tried to use event.which but I'm a little lost. Help is greatly appreciated!

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• POS Desktop Application using DB or Localfiles ? using WPF

  - by Panindra

  I am planning to build a POS Application for my shop. I have enough knowledge to build the application using DB and also using local files( system.IO - binary files ) to store and access the data for my application. But , i have no deployment experience and confused in choosing data storing option. Database using MDF may be good option ( may ease plenty of coding ) but i don't want to have SQL server on my desktop. as i am using WPF for building , my concern is that my application may get slow due to server response and design rendering of WPF. Then i tried to use only local data (binary files) to store the data and retrive using class and objects. but this coding is taking lot of time , so in the middle of the process i struck in the dilemma of going back to Database . Please help , for performance wise whic one is better . and in Practical World ,in professional applications which one is widely using .. please give suggestions ..

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• Delphi 2010 " is" statement behaves differently than Delphi 7's?!

  - by Tom1952

  Why does the code below return TRUE in Delphi 7 and FALSE in Delphi 2010? TBitBtn is a descendant of TButton. type TForm1 = class(TForm) Button1: TButton; BitBtn1: TBitBtn; procedure Button1Click(Sender: TObject); private public end; var Form1: TForm1; implementation {$R *.dfm} procedure TestControl( aControl: TControl); begin if (aControl is TButton) then showmessage('TRUE') else showmessage('FALSE'); end; procedure TForm1.Button1Click(Sender: TObject); begin TestControl(BitBtn1); end;

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• Java regex, need help with escape characters

  - by Blankman

  My HTML looks like: <td class="price" valign="top"><font color= "blue">&nbsp;&nbsp;$&nbsp; 5.93&nbsp;</font></td> I tried: String result = ""; Pattern p = Pattern.compile("\"blue\">&nbsp;&nbsp;$&nbsp;(.*)&nbsp;</font></td>"); Matcher m = p.matcher(text); if(m.find()) result = m.group(1).trim(); Doesn't seem to be matching. Am I missing an escape character?

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• How To? Use an Expression Tree to call a Generic Method when the Type is only known at runtime.

  - by David Williams

  Please bear with me; I am very new to expression trees and lambda expressions, but trying to learn. This is something that I solved using reflection, but would like to see how to do it using expression trees. I have a generic function: private void DoSomeThing<T>( param object[] args ) { // Some work is done here. } that I need to call from else where in my class. Now, normally, this would be be simple: DoSomeThing<int>( blah ); but only if I know, at design time that I am working with an int. When I do not know the type until runtime is where I need the help. Like I said, I know how to do it via reflection, but I would like to do it via expression trees, as my (very limited) understanding is that I can do so. Any suggestions or points to sites where I can get this understanding, preferably with sample code?

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• Can I do this with just SQL?

  - by Josh

  At the moment I have two tables, products and options. Products contains id title description Options contains id product_id sku title Sample data may be: Products id: 1 title: 'test' description: 'my description' Options id: 1 product_id: 1 sku: 1001 title: 'red' id: 2 product_id: 1 sku: 1002 title: 'blue' I need to display each item, with each different option. At the moment, I select the rows in products and iterate through them, and for each one select the appropriate rows from options. I then create an array, similar to: [product_title] = 'test'; [description] = 'my description'; [options][] = 1, 1001, 'red'; [options][] = 2, 1002, 'blue'; Is there a better way to do this with just sql (I'm using codeigniter, and would ideally like to use the Active Record class)?

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• Instantiate ItemsPanelTemplate

  - by Stephan

  I'm trying to create a ItemsControl that has a separator between items, for example a control to create a navigation bread crumb. I want the control to be completely generic. My original method was to create extend ItemsControl, add a SeparatorTemplate property, and then have the class add separators to the ItemsHost of the ItemsControl. The problem with this approach is that if you add extra items to the container panel, the ItemGenerator gets confused and the items are out of order and don't get removed correctly. So my second plan was to create a completely new control that would emulate an ItemsControl, but the problem I'm running into is that I can't find a way to instantiate an ItemsPanelTemplate. I would like to provide an ItemsPanel property just like ItemsControl, but I can't then create a panel from that template. Can anyone think of a way to either instantiate an ItemsPanelTemplate or way to add controls to an ItemsControl's panel without breaking the ItemGenerator?

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• I have an error when I escaping string

  - by Sudip Rooj

  I am trying to write a string in my php code in my panel. This is given bellow <?php $str.="$('#layerList ul').prepend('<li data-refInd=\''+arr_ind+'\'><img src=\''tmp_card_imgs/\'+temp".$k.".name+'\' width='20px' /> Layer '+temp".$k.".zindex+':Image <span class=\'del_layer\' style=\'cursor:pointer;float:right;display:block;\'>X</span></li>');"; ?> but the error showing in console is given bellow SyntaxError: missing ) after argument list [Break On This Error] ...data-refInd=\''+arr_ind+'\'><img src=\''tmp_card_imgs/\'+temp0.name+'\' width='2... -----------------------------------------| editor.php?id=129 (line 837, col 60) What is the problem in my string escaping?

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• C++ MTL Library dimension.h bug?

  - by avanwieringen

  I've installed MTL on my Fedora Core 12 x64 system, but when building an application I get the following error: In file included from /usr/local/include/mtl/matrix.h:41, from /usr/local/include/mtl/mtl.h:40, from ltiSystem.hxx:4, from strTools.hxx:4, from ff.cxx:3: /usr/local/include/mtl/envelope2D.h:72: error: declaration of ‘typedef struct mtl::twod_tag mtl::envelope2D<T>::dimension’ /usr/local/include/mtl/dimension.h:19: error: changes meaning of ‘dimension’ from ‘class mtl::dimension<typename mtl::dense1D<T, 0>::size_type, 0, 0>’ make[1]: *** [ff.o] Error 1 Which would imply an error in MTL. I have changed to different MTL versions and the problem persists, but on Google there is no proper answer. I use the g++ compiler. Does anyone have a clye?

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• Definition list disc not showing up

  - by aslum

  CSS: .about dt { list-style-type:none; font-weight:bold; } .about dd { list-style-type: disc; list-style-position: outside; margin-left: 0px; padding-left: 30px; } And the html <dl class="about"> <dt>Current topics and titles </dt> <dd>Fulfilling community residents&rsquo; appetite for information about popular cultural and social trends and their desires for satisfying recreational experiences</dd> ... I want a disc before the DD, but it's not showing up in Chrome or IE. Any ideas what I've done wrong? Thanks!

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