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  • HTML 5 Video OnEnded Event not Firing

    - by Eric J.
    I'm trying to react to the HTML 5 onended event for the video tag without success. In the code snippet below I added the mouseleave event to be sure the jQuery code is correct and that event does activate the alert() box. The video plays just fine but onended does not cause my alert() to fire off. Testing in Chrome, updated today to version 5.0.375.55. <html> <head> <script src="http://code.jquery.com/jquery-1.4.2.min.js"></script> <script> $(document).ready(function(){ $("#myVideoTag").bind('mouseleave onended', function(){ alert("All done, function!"); }); }); </script> </head> <body> <video id="myVideoTag" width="640" height="360" poster="Fractal-zoom-1-04-Snowflake.jpg" controls> <source src="Fractal-zoom-1-04-Snowflake.mp4" type="video/mp4"></source> <source src="Fractal-zoom-1-04-Snowflake.ogg" type="video/ogg"></source> </video> <body> <html>

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  • Vbscript - Checking each subfolder for files and copy files

    - by Kenny Bones
    I'm trying to get this script to work. It's basically supposed to mirror two sets of folders and make sure they are exactly the same. If a folder is missing, the folder and it's content should be copied. Then the script should compare the DateModified attribute and only copy the files if the source file is newer than the destination file. I'm trying to get together a script that does exactly that. And so far I've been able to check all subfolder if they exist and then create them if they don't. Then I've been able to scan the top source folder for it's files and copy them if they don't exist or if the DateModified attribute is newer on the source file. What remains is basically scanning each subfolder for its files and copy them if they don't exist or if the DateModified stamp is newer. Here's the code: Dim strSourceFolder, strDestFolder strSourceFolder = "c:\users\vegsan\desktop\Source\" strDestFolder = "c:\users\vegsan\desktop\Dest\" Set fso = CreateObject("Scripting.FileSystemObject") Set objTopFolder = fso.GetFolder(strSourceFolder) Set colTopFiles = objTopFolder.Files 'Check to see if subfolders actually exist. Create if they don't Set objColFolders = objTopFolder.SubFolders For Each subFolder in objColFolders CheckFolder subFolder, strSourceFolder, strDestFolder Next ' Check all files in first top folder For Each objFile in colTopFiles CheckFiles objFile, strSourceFolder, strDestFolder Next Sub CheckFolder (strSubFolder, strSourceFolder, strDestFolder) Set fso = CreateObject("Scripting.FileSystemObject") Dim folderName, aSplit aSplit = Split (strSubFolder, "\") UBound (aSplit) If UBound (aSplit) > 1 Then folderName = aSplit(UBound(aSplit)) folderName = strDestFolder & folderName End if If Not fso.FolderExists(folderName) Then fso.CreateFolder(folderName) End if End Sub Sub CheckFiles (file, SourceFolder, DestFolder) Set fso = CreateObject("Scripting.FileSystemObject") Dim DateModified DateModified = file.DateLastModified ReplaceIfNewer file, DateMofidied, SourceFolder, DestFolder End Sub Sub ReplaceIfNewer (sourceFile, DateModified, SourceFolder, DestFolder) Const OVERWRITE_EXISTING = True Dim fso, objFolder, colFiles, sourceFileName, destFileName Dim DestDateModified, objDestFile Set fso = CreateObject("Scripting.FileSystemObject") sourceFileName = fso.GetFileName(sourceFile) destFileName = DestFolder & sourceFileName if Not fso.FileExists(destFileName) Then fso.CopyFile sourceFile, destFileName End if if fso.FileExists(destFileName) Then Set objDestFile = fso.GetFile(destFileName) DestDateModified = objDestFile.DateLastModified if DateModified <> DestDateModified Then fso.CopyFile sourceFile, destFileName End if End if End Sub

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  • Jquery.Cycle and IE7 including next Div

    - by Aklobem
    Hi All, I'd really appreciate if someone could help me with a strange problem with Jquery.cycle. I've added jquery.cycle (verson 2.72) into a existing application (Prestashop) to slideshow a number of images. On Firefox, Mozilla etc it works brilliantly - on IE7 a bizarre problem occurs. The problem is where I have a and say 6 pictures a couple of to break things up then another content and IE includes the "editorial" into the slideshow. The "editorial" block is removed from the page, and appears as the last slide in the slideshow, located in the top left corner. Additional facts: jquery-1.2.6 is in use for the rest of the application (I've tried to upgrade it and all I get is the same behaviour with lots of other things breaking). I've tried jquery.cycle.lite - same behaviour. css: root { display: block; } .pics { height: 432px; width: 432px; padding: 0; margin: 0; } .pics img { padding: 15px; border: 1px solid #ccc; background-color: #eee; width: 400px; height: 400px; top: 0; left: 0 } div.pics { margin-left: auto; margin-right: auto; } snippet: $(document).ready(function() { $('.pics').cycle({ fx: 'fade', pause: 100, cleartype: 1 }); }); img source img source img source img source

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  • System.IO.FileLoadException

    - by Raj G
    Hi All, I have got this error when using Enterprise Library 3.1 May 2007 version. We are developing a product and have a common lib directory beneath the Subversion Trunk directory <\Trunk\Lib\ into which we put all the third party DLLs. Inside this we have Microsoft\EnterpriseLibrary\v3.1 in which we have copied all the dlls from \Program Files\Microsoft Enterprise Library May2007\bin. Everything was working properly until one of the developers installed the source code on this machine. There were some dlls copied at the end of the source code installation and once that was done, he is not able to run the project anymore. He always gets this error 'Microsoft.Practices.EnterpriseLibrary.Data, Version=3.1.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)' What is the problem here? I thought that when the source code was installed it was just supposed to build everything and copy in the bin directory within the source code parent directory. Also we have copied the Dlls from Microsoft Enterprise Library May 2007\bin directory into our product development directory and references into our project with a copylocal flag set to true. Can anyone help me out here RK

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  • Error creating Rails DB using rake db:create

    - by Simon
    Hi- I'm attempting to get my first "hello world" rails example going using the rails' getting started guide on my OSX 10.6.3 box. When I go to execute the first rake db:create command (I'm using mysql) I get: simon@/Users/simon/source/rails/blog/config: rake db:create (in /Users/simon/source/rails/blog) Couldn't create database for {"reconnect"=>false, "encoding"=>"utf8", "username"=>"root", "adapter"=>"mysql", "database"=>"blog_development", "pool"=>5, "password"=>nil, "socket"=>"/opt/local/var/run/mysql5/mysqld.sock"}, charset: utf8, collation: utf8_unicode_ci (if you set the charset manually, make sure you have a matching collation) I found plenty of stackoverflow questions addressing this problem with the following advice: Verify that user and password are correct (I'm running w/ no password for root on my dev box) Verify that the socket is correct - I can cat the socket, so I assume it's correct Verify that the user can create a DB (As you can see root can connect and create a this DB no problem) simon@/Users/simon/source/rails/blog/config: mysql -uroot -hlocalhost Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 16 Server version: 5.1.45 Source distribution Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql create database blog_development; Query OK, 1 row affected (0.00 sec) Any idea on what might be going on here?

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  • Problem with sqlite database on android platform

    - by mudit
    hi all i am developing an application which uses sqlite db for storing records. I am developing this application on SDK 1.5.. when i test the application on 1.5 device it works good but when i try to run it on a 1.6 device i get a force close message with following logcat output: 03-19 09:31:35.206: ERROR/AndroidRuntime(224): Uncaught handler: thread main exiting due to uncaught exception 03-19 09:31:35.226: ERROR/AndroidRuntime(224): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.abc.android/com.abc.android.app}: android.database.sqlite.SQLiteException: unable to open database file 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2454) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2470) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.os.Handler.dispatchMessage(Handler.java:99) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.os.Looper.loop(Looper.java:123) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread.main(ActivityThread.java:4310) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at java.lang.reflect.Method.invokeNative(Native Method) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at java.lang.reflect.Method.invoke(Method.java:521) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at dalvik.system.NativeStart.main(Native Method) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): Caused by: android.database.sqlite.SQLiteException: unable to open database file 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteDatabase.dbopen(Native Method) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteDatabase.(SQLiteDatabase.java:1697) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:738) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:760) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:753) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ApplicationContext.openOrCreateDatabase(ApplicationContext.java:473) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at com.abc.android.DbAdapter.open(DbAdapter.java:101) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at com.abc.android.class1.onCreate(class1.java:105) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417) 03-19 09:31:35.226: ERROR/AndroidRuntime(224): ... 11 more DBAdapter.java public DbAdapter open() throws SQLException { Log.d("DbAdapter", "in DbAdapter open()"); mDbHelper = new DatabaseHelper(mCtx); mDb = mDbHelper.getWritableDatabase(); // line 101 return this; } DatabaseHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL(DATABASE_QUERY); } class1.java mDB = new DbAdapter(Class1.this); mDB.open(); // line 105 Please help..what do i do????

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  • Using JBoss EL with Websphere

    - by rat
    Hey, I'm doing a project which is going to run on Websphere. I'm using JSF/Facelets/Richfaces for this project. I want to use the JBoss EL implementation as it allows calling methods with parameters from EL etc. ... usually this is accomplished by getting the JBoss EL jar and then putting this in the web.xml: <context-param> <param-name>com.sun.faces.expressionFactory</param-name> <param-value>org.jboss.el.ExpressionFactoryImpl</param-value> </context-param> However this isn't working ... I don't know if its a problem with Websphere or ...??? I get a stack trace when going to the page saying it can't parse the EL where I have passed a method a parameter: <a4j:commandLink value="Delete" action="#{mcsaAdmin.deleteLanguage(1234)}" /> Looking at the stacktrace it appears to still be using the standard sun EL: Caused by: javax.el.ELException: Error Parsing: #{mcsaAdmin.deleteLanguage(1234)} at com.sun.el.lang.ExpressionBuilder.createNodeInternal(Unknown Source) at com.sun.el.lang.ExpressionBuilder.build(Unknown Source) at com.sun.el.lang.ExpressionBuilder.createMethodExpression(Unknown Source) at com.sun.el.ExpressionFactoryImpl.createMethodExpression(Unknown Source) at com.sun.facelets.tag.TagAttribute.getMethodExpression(TagAttribute.java:141) Note the 'com.sun.el.ExpressionFactoryImpl' instead of 'org.jboss.el.ExpressionFactoryImpl' as specified above ... Am I doing something obviously wrong? Anyone have any ideas... I'm using standard JSF implementation from majorra project or whatever provided on sun website and richfaces 3.1.4 and facelets 1.1.14.

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  • java AbstractMethodError

    - by Akhil
    How to handle this error in lucene: java.lang.AbstractMethodError: org.apache.lucene.store.Directory.listAll()[Ljava/lang/String; at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:568) at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:69) at org.apache.lucene.index.IndexReader.open(IndexReader.java:316) at org.apache.lucene.index.IndexReader.open(IndexReader.java:188) I am making a lucene function call but unfortunately it itself calls an abstract method of some class, as is evident from the error above. What is the work around for this? Thanks, --Akhil

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  • C# average function for large numbers without overflow exception

    - by Ron Klein
    .NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; class Program { static void Main(string[] args) { var items = new long[] { long.MaxValue - 100, long.MaxValue - 200, long.MaxValue - 300 }; try { var avg = items.Average(); Console.WriteLine(avg); } catch (OverflowException ex) { Console.WriteLine("can't calculate that!"); } Console.ReadLine(); } } Obviously, the mathematical result is 9223372036854775607 (long.MaxValue - 200), but I get an exception there. This is because the implementation (on my machine) to the Average extension method, as inspected by .NET Reflector is: public static double Average(this IEnumerable<long> source) { if (source == null) { throw Error.ArgumentNull("source"); } long num = 0L; long num2 = 0L; foreach (long num3 in source) { num += num3; num2 += 1L; } if (num2 <= 0L) { throw Error.NoElements(); } return (((double) num) / ((double) num2)); } I know I can use a BigInt library (yes, I know that it is included in .NET Framework 4.0, but I'm tied to 3.5). But I still wonder if there's a pretty straight forward implementation of calculating the average of integers without an external library. Do you happen to know about such implementation? Thanks!!

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  • Traversing/Manipulating new window from parent window with jquery

    - by Anthony
    I found a question already with a possible solution, but I had already tried the method suggested before reading it, and it even says it's inconsistent. So I guess I'm wondering why this doesn't work: $("img").click(function() { var imgwindow = window.open('imgwin.html','','width=460,height=345'); alert(imgwindow.find("img").attr("src")); }); The goal is to set the new window's img to the same src as the image that the user clicked to open the new window. But in the above scenario, I'm just trying to tap into the new window to get what it's already-set src. I have imgwin.html already written with a default src for the image, so it should alert that url. Instead I just get undefined. I also tried the following (which should be identical on the back end), but with the same results: $("img").click(function() { var imgwindow = window.open('imgwin.html','','width=460,height=345'); alert($("img",imgwindow).attr("src")); }); I even tried variations of wrapping the imgwindow variable in $() in case somehow jquery wasn't picking up on the variable as a DOM element. The only thing I can guess is that since window.open() is a method, jquery doesn't treat it like a DOM element, even though all documentation from basic javascript tutorials treat the variable as both a method to open the window and the pointer to the window's inner DOM.

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  • Binding from View-Model to View-Model of a child User Control in Silverlight? 2 sources - 1 target..

    - by andrej351
    Hi there, So i have a UserControl for one of my Views and have another 'child' UserControl inside that. The outer 'parent' UserControl has a Collection on its View-Model and a Grid control on it to display a list of Items. I want to place another UserControl inside this UserControl to display a form representing the details of one Item. The outer / parent UserControl's View-Model already has a property on it to hold the currently selected Item and i would like to bind this to a DependancyProperty on the inner / child UserControl. I would then like to bind that DependancyProperty to a property on the child UserControl's View-Model. I can then set the DependancyProperty once in XAML with a binding expression and have the child UserControl do all its work in its View-Model like it should. The code i have looks like this.. Parent UserControl: <UserControl x:Class="ItemsListView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel}"> <!-- Grid Control here... --> <ItemDetailsView Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemsListViewModel.SelectedItem}" /> </UserControl> Child UserControl: <UserControl x:Class="ItemDetailsView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel}" ItemDetailsView.Item="{Binding Source={StaticResource ServiceLocator}, Path=ItemDetailsViewModel.Item, Mode=TwoWay}"> <!-- Form controls here... --> </UserControl> The selected Item is bound to the DependancyProperty fine. However from the DependancyProperty to the child View-Model does not. It appears to be a situation where there are two concurrent bindings which need to work but with the same target for two sources. Why won't the second (in the child UserControl) binding work?? Is there a way to acheive the behaviour I'm after?? Cheers.

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  • asp.net mvc custom model binder

    - by mike
    pleas help guys, my custom model binder which has been working perfectly has starting giving me errors details below An item with the same key has already been added. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: An item with the same key has already been added. Source Error: Line 31: { Line 32: string key = bindingContext.ModelName; Line 33: var doc = base.BindModel(controllerContext, bindingContext) as Document; Line 34: Line 35: // DoBasicValidation(bindingContext, doc); Source File: C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs Line: 33 Stack Trace: [ArgumentException: An item with the same key has already been added.] System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +51 System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add) +7462172 System.Linq.Enumerable.ToDictionary(IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) +270 System.Linq.Enumerable.ToDictionary(IEnumerable1 source, Func2 keySelector, IEqualityComparer1 comparer) +102 System.Web.Mvc.ModelBindingContext.get_PropertyMetadata() +157 System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +158 System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +90 System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +50 System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1048 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +280 PitchPortal.Web.Binders.documentModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) in C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs:33 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +257 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +109 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +314 System.Web.Mvc.Controller.ExecuteCore() +105 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +39 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7 System.Web.Mvc.<c_DisplayClass8.b_4() +34 System.Web.Mvc.Async.<c_DisplayClass1.b_0() +21 System.Web.Mvc.Async.<c_DisplayClass81.b_7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult1.End() +59 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +44 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8677678 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 any ideas guys? Thanks

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  • C# average function without overflow exception

    - by Ron Klein
    .NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; class Program { static void Main(string[] args) { var items = new long[] { long.MaxValue - 100, long.MaxValue - 200, long.MaxValue - 300 }; try { var avg = items.Average(); Console.WriteLine(avg); } catch (OverflowException ex) { Console.WriteLine("can't calculate that!"); } Console.ReadLine(); } } Obviously, the mathematical result is 9223372036854775607 (long.MaxValue - 200), but I get an exception there. This is because the implementation (on my machine) to the Average extension method, as inspected by .NET Reflector is: public static double Average(this IEnumerable<long> source) { if (source == null) { throw Error.ArgumentNull("source"); } long num = 0L; long num2 = 0L; foreach (long num3 in source) { num += num3; num2 += 1L; } if (num2 <= 0L) { throw Error.NoElements(); } return (((double) num) / ((double) num2)); } I know I can use a BigInt library (yes, I know that it is included in .NET Framework 4.0, but I'm tied to 3.5). But I still wonder if there's a pretty straight forward implementation of calculating the average of integers without an external library. Do you happen to know about such implementation? Thanks!! UPDATE: The previous example, of three large integers, was just an example to illustrate the overflow issue. The question is about calculating an average of any set of numbers which might sum to a large number that exceeds the type's max value. Sorry about this confusion. I also changed the question's title to avoid additional confusion. Thanks all!!

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  • How to get the data for intra-day candlestick charts for stocks on eg Nasdaq

    - by Chris
    Hi, For a learning exercise, i'm wanting to create candlestick (stock) graphs for stocks using zedgraph. Now on google finance, i can get daily open-high-low-close data which is perfect for making these graphs, but i'm wanting to create intra-day graphs, eg open-high-low-close data for an hour (or 5 mins, or 1 min even). Is there any way to get that kind of data without having to subscribe to any expensive service? I've heard opentick mentioned in an old SO question, but their site is defunct now. I was thinking of polling google finance once a minute to get the latest stock price, then with an hour's worth of 60 prices, i could then roughly calculate the open-high-low-close, but this is a bit of an estimation and i'm open to other suggestions. Cheers all.

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  • How can I listen to multiple Serial Ports asynchronously in C#

    - by Kamiel Wanrooij
    I have an application that listens to a piece of hardware on a USB to Serial converter. My application should monitor more than one serial port at the same time. I loop the serial ports I need to listen to, and create a thread for each port. In the thread I have my data handing routine. When I assign one port, it runs flawlessly. When I listen to the other one, it also works. When I open both ports however, the second port always throws an UnauthorizedAccessException when calling serialPort.Open(). It does not matter in what order I open the ports, the second one always fails. I listen to the ports using serialPort.ReadLine() in a while loop. Can .NET open more than one port at the same time? Can I listen to both? Or should I use another (thread safe?) way to access my serial port events?

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  • NHibernate Generators

    - by Dan
    What is the best tool for generating Entity Class and/or hbm files and/or sql script for NHibernate. This list below is from http://www.hibernate.org/365.html, which is the best any why? Moregen Free, Open Source (GPL) O/R Generator that can merge into existing Visual Studio Projects. Also merges changes to generated classes. NConstruct Lite Free tool for generating NHibernate O/R mapping source code. Different databases support (Microsoft SQL Server, Oracle, Access). GENNIT NHibernate Code Generator Free/Commercial Web 2.0 code generation of NHibernate code using WYSIWYG online UML designer. GenWise Studio with NHibernate Template Commercial product; Imports your existing database and generates all XML and Classes, including factories. It can also generate a asp.net web-application for your NHibernate BO-Layer automatically. HQL Analyzer and hbm.xml GUI Editor ObjectMapper by Mats Helander is a mapping GUI with NHibernate support MyGeneration is a template-based code generator GUI. Its template library includes templates for generating mapping files and classes from a database. AndroMDA is an open-source code generation framework that uses Model Driven Architecture (MDA) to transform UML models into deployable components. It supports generation of data access layers that use NHibernate as their persistence framework. CodeSmith Template for NH NHibernate Helper Kit is a VS2005 add-in to generate classes and mapping files. NConstruct - Intelligent Software Factory Commercial product; Full .NET C# source code generation for all tiers of the information system trough simple wizard procedure. O/R mapping based on NHibernate. For both WinForms and ASP.NET 2.0.

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  • Disposables, Using & Try/Catch Blocks

    - by Aren B
    Having a mental block today, need a hand verifying my logic isn't fubar'ed. Traditionally I would do file i/o similar to this: FileStream fs = null; // So it's visible in the finally block try { fs = File.Open("Foo.txt", FileMode.Open); /// Do Stuff } catch(IOException) { /// Handle Stuff } finally { if (fs != null) fs.Close(); } However, this isn't very elegant. Ideally I'd like to use the using block to dispose of the filestream when I'm done, however I am unsure about the synergy between using and try/catch. This is how i'd like to implement the above: try { using(FileStream fs = File.Open("Foo.txt", FileMode.Open)) { /// Do Stuff } } catch(Exception) { /// Handle Stuff } However, I'm worried that a premature exit (via thrown exception) from within the using block may not allow the using block to complete execution and clean up it's object. Am I just paranoid, or will this actually work the way I intend it to?

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  • Get Asynchronous HttpResponse through Silverlight (F#)

    - by jack2010
    I am a newbie with F# and SL and playing with getting asynchronous HttpResponse through Silverlight. The following is the F# code pieces, which is tested on VS2010 and Window7 and works well, but the improvement is necessary. Any advices and discussion, especially the callback part, are welcome and great thanks. module JSONExample open System open System.IO open System.Net open System.Text open System.Web open System.Security.Authentication open System.Runtime.Serialization [<DataContract>] type Result<'TResult> = { [<field: DataMember(Name="code") >] Code:string [<field: DataMember(Name="result") >] Result:'TResult array [<field: DataMember(Name="message") >] Message:string } // The elements in the list [<DataContract>] type ChemicalElement = { [<field: DataMember(Name="name") >] Name:string [<field: DataMember(Name="boiling_point") >] BoilingPoint:string [<field: DataMember(Name="atomic_mass") >] AtomicMass:string } //http://blogs.msdn.com/b/dsyme/archive/2007/10/11/introducing-f-asynchronous-workflows.aspx //http://lorgonblog.spaces.live.com/blog/cns!701679AD17B6D310!194.entry type System.Net.HttpWebRequest with member x.GetResponseAsync() = Async.FromBeginEnd(x.BeginGetResponse, x.EndGetResponse) type RequestState () = let mutable request : WebRequest = null let mutable response : WebResponse = null let mutable responseStream : Stream = null member this.Request with get() = request and set v = request <- v member this.Response with get() = response and set v = response <- v member this.ResponseStream with get() = responseStream and set v = responseStream <- v let allDone = new System.Threading.ManualResetEvent(false) let getHttpWebRequest (query:string) = let query = query.Replace("'","\"") let queryUrl = sprintf "http://api.freebase.com/api/service/mqlread?query=%s" "{\"query\":"+query+"}" let request : HttpWebRequest = downcast WebRequest.Create(queryUrl) request.Method <- "GET" request.ContentType <- "application/x-www-form-urlencoded" request let GetAsynResp (request : HttpWebRequest) (callback: AsyncCallback) = let myRequestState = new RequestState() myRequestState.Request <- request let asyncResult = request.BeginGetResponse(callback, myRequestState) () // easy way to get it to run syncrnously w/ the asynch methods let GetSynResp (request : HttpWebRequest) : HttpWebResponse = let response = request.GetResponseAsync() |> Async.RunSynchronously downcast response let RespCallback (finish: Stream -> _) (asynchronousResult : IAsyncResult) = try let myRequestState : RequestState = downcast asynchronousResult.AsyncState let myWebRequest1 : WebRequest = myRequestState.Request myRequestState.Response <- myWebRequest1.EndGetResponse(asynchronousResult) let responseStream = myRequestState.Response.GetResponseStream() myRequestState.ResponseStream <- responseStream finish responseStream myRequestState.Response.Close() () with | :? WebException as e -> printfn "WebException raised!" printfn "\n%s" e.Message printfn "\n%s" (e.Status.ToString()) () | _ as e -> printfn "Exception raised!" printfn "Source : %s" e.Source printfn "Message : %s" e.Message () let printResults (stream: Stream)= let result = try use reader = new StreamReader(stream) reader.ReadToEnd(); finally () let data = Encoding.Unicode.GetBytes(result); let stream = new MemoryStream() stream.Write(data, 0, data.Length); stream.Position <- 0L let JsonSerializer = Json.DataContractJsonSerializer(typeof<Result<ChemicalElement>>) let result = JsonSerializer.ReadObject(stream) :?> Result<ChemicalElement> if result.Code<>"/api/status/ok" then raise (InvalidOperationException(result.Message)) else result.Result |> Array.iter(fun element->printfn "%A" element) let test = // Call Query (w/ generics telling it you wand an array of ChemicalElement back, the query string is wackyJSON too –I didn’t build it don’t ask me! let request = getHttpWebRequest "[{'type':'/chemistry/chemical_element','name':null,'boiling_point':null,'atomic_mass':null}]" //let response = GetSynResp request let response = GetAsynResp request (AsyncCallback (RespCallback printResults)) () ignore(test) System.Console.ReadLine() |> ignore

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  • asp.net mvc custom model binder

    - by mike
    pleas help guys, my custom model binder which has been working perfectly has starting giving me errors details below An item with the same key has already been added. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: An item with the same key has already been added. Source Error: Line 31: { Line 32: string key = bindingContext.ModelName; Line 33: var doc = base.BindModel(controllerContext, bindingContext) as Document; Line 34: Line 35: // DoBasicValidation(bindingContext, doc); Source File: C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs Line: 33 Stack Trace: [ArgumentException: An item with the same key has already been added.] System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +51 System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add) +7462172 System.Linq.Enumerable.ToDictionary(IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) +270 System.Linq.Enumerable.ToDictionary(IEnumerable1 source, Func2 keySelector, IEqualityComparer1 comparer) +102 System.Web.Mvc.ModelBindingContext.get_PropertyMetadata() +157 System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +158 System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +90 System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +50 System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +1048 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +280 PitchPortal.Web.Binders.documentModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) in C:\Users\Bich Vu\Documents\Visual Studio 2008\Projects\PitchPortal\PitchPortal.Web\Binders\DocumentModelBinder.cs:33 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +257 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +109 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +314 System.Web.Mvc.Controller.ExecuteCore() +105 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +39 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7 System.Web.Mvc.<c_DisplayClass8.b_4() +34 System.Web.Mvc.Async.<c_DisplayClass1.b_0() +21 System.Web.Mvc.Async.<c__DisplayClass81.<BeginSynchronous>b__7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult1.End() +59 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +44 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8677678 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155 any ideas guys? Thanks

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  • Binding menu items to a sitemap.

    - by Ricardo Deano
    Hello all..this is driving me nuts. I have a navigation menu I would like to display based upon user roles (using.net membership) After several hours and headaches (from banging my head against the desk) I was wondering if someone can point me in the error of my ways. Page: <body> <form runat="server"> <div class="page"> <div class="header"> <div class="loginDisplay"> <asp:LoginView ID="HeadLoginView" runat="server" EnableViewState="false"> <AnonymousTemplate> <a href="~/Login.aspx" ID="HeadLoginStatus" runat="server">Log In</a> </AnonymousTemplate> <LoggedInTemplate> Welcome <span class="bold"><asp:LoginName ID="HeadLoginName" runat="server" /></span>! [ <asp:LoginStatus ID="HeadLoginStatus" runat="server" LogoutAction="Redirect" LogoutText="Log Out" LogoutPageUrl="~/Open/Close.aspx"/> ] </LoggedInTemplate> </asp:LoginView> </div> <div class="clear hideSkiplink"> <asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" IncludeStyleBlock="False" Orientation="Horizontal" DataSourceID="AugustSiteMap" /> <asp:SiteMapDataSource ID="AugustSiteMap" runat="server" ShowStartingNode="false"/> </div> </div> SiteMap: <?xml version="1.0" encoding="utf-8" ?> <siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" > <siteMapNode url="~/Default.aspx" title="Home" description="Home"> <siteMapNode title="Open Pages" description="Open Pages"> <siteMapNode url="~/Open/Login.aspx" title="Login Page" description="Login Page" roles="*"/> <siteMapNode url="~/Open/Close.aspx" title="Thank you for using Valpak Data Solutions Online Reporting" description="Thank you for using Valpak Data Solutions Online Reporting" roles="*"/> </siteMapNode> <siteMapNode title="Logged In Open Pages" description="Logged In Open Pages"> <siteMapNode url="~/Landing.aspx" title="Landing Page" description="Landing Page" roles="*"/> <siteMapNode url="~/ContactUs.aspx" title="Contact Us" description="Contact Us" roles="*"/> </siteMapNode> <siteMapNode title="Restricted Pages" description="Resticted Pages"> <siteMapNode url="~/Restricted/ProductSearch.aspx" title=" Product Search" description=" Product Search" roles="*"/> <siteMapNode url="~/Restricted/ReportOutput.aspx" title="Report Output" description="Report Output" roles="Admin"/> </siteMapNode> </siteMapNode> </siteMap> Webconfig: <roleManager enabled="true" /> <siteMap defaultProvider="XmlSiteMapProvider" enabled="true"> <providers> <add name="XmlSiteMapProvider" description="AugustSiteMap" type="System.Web.XmlSiteMapProvider " siteMapFile="AugustSiteMap.sitemap" securityTrimmingEnabled="true" /> </providers> </siteMap> How can I ensure that when the user is logged in, the appropriate menu items are displayed on the Landing page? Please excuse my ignorance. Still new to all of this and my current method of 'trial and error' has seen me reach suicide levels this morning!

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  • What's all this fuss about?

    - by atch
    Hi guys, At the beginning I want to state that it is not my intention to upset anyone who uses/like language other than C++. I'm saying that due to the fact that on one forum everytime when I've tried to ask questions of similiar nature I was almost always accused of trying to create a raw. Ok that's having done this is my question: I don't understand why java/c# creators thought/think that having something like vm and having source code compiled to bytecode instead of native code is in a long run any advantage. And why having function compiled for a first time when they are invoked is any advantege? And what's the story about write once run everywhere? When I think about the business of having something written once and it can run everywhere - well in theory this is all well. But I know for a fact that in practice it doesn't look that well at all. It is rather like write once test everywhere. And why would I preffer something to be compiled on runtime instead of compiletime. If I would have to wait even one hour longer for program to be installed once and for all and all the compilation would be done and nothing would be compiled after that I would preffer that. And I don't really know how it works in the real world (I'm a student never worked in IT business) but for example if I have working program written in C++ for Windows and I have wish to move it to another platform wouldn't I have to take my source code and compile it on desired machine? So in other words isn't that rather problem of having compiler which will compile source code on different machines (as far as I'm concerned there is just one C++ and source code will look identical in every machine). And last but not least if you think about it how many programs they are which are really word porting? I personnally can think of 3 maybe four.

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  • Average function without overflow exception

    - by Ron Klein
    .NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; class Program { static void Main(string[] args) { var items = new long[] { long.MinValue + 100, long.MinValue + 200, long.MinValue + 300 }; try { var avg = items.Average(); Console.WriteLine(avg); } catch (OverflowException ex) { Console.WriteLine("can't calculate that!"); } Console.ReadLine(); } } Obviously, the mathematical result is 9223372036854775607 (long.MaxValue - 200), but I get an exception there. This is because the implementation (on my machine) to the Average extension method, as inspected by .NET Reflector is: public static double Average(this IEnumerable<long> source) { if (source == null) { throw Error.ArgumentNull("source"); } long num = 0L; long num2 = 0L; foreach (long num3 in source) { num += num3; num2 += 1L; } if (num2 <= 0L) { throw Error.NoElements(); } return (((double) num) / ((double) num2)); } I know I can use a BigInt library (yes, I know that it is included in .NET Framework 4.0, but I'm tied to 3.5). But I still wonder if there's a pretty straight forward implementation of calculating the average of integers without an external library. Do you happen to know about such implementation? Thanks!! UPDATE: The previous example, of three large integers, was just an example to illustrate the overflow issue. The question is about calculating an average of any set of numbers which might sum to a large number that exceeds the type's max value. Sorry about this confusion. I also changed the question's title to avoid additional confusion. Thanks all!!

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  • Python + QT + Gstreamer

    - by Ptterb
    Hi everyone, I'm working with PyQt and trying to get video from a webcam to play within a QT widget. I've found tutorials for C and Qt, and for python and gtk, but NOTHING for this combo of pyQt and gstreamer. Anybody get this working? This plays the video fine, but in a separate window: self.gcam = gst.parse_launch('v4l2src device=/dev/video0 ! autovideosink') self.gcam.set_state(gst.STATE_PLAYING) what I need is to get the overlay working so it's displayed within a widget on my GUI. Thanks, Gurus of the internet! ok, so I've gotten a lot farther, but still in need of some help. I'm actually writing this for Maemo, but the following code works fine on my linux laptop: class Vid: def __init__(self, windowId): self.player = gst.Pipeline("player") self.source = gst.element_factory_make("v4l2src", "vsource") self.sink = gst.element_factory_make("autovideosink", "outsink") self.source.set_property("device", "/dev/video0") self.scaler = gst.element_factory_make("videoscale", "vscale") self.window_id = None self.windowId = windowId self.player.add(self.source, self.scaler, self.sink) gst.element_link_many(self.source,self.scaler, self.sink) bus = self.player.get_bus() bus.add_signal_watch() bus.enable_sync_message_emission() bus.connect("message", self.on_message) bus.connect("sync-message::element", self.on_sync_message) def on_message(self, bus, message): t = message.type if t == gst.MESSAGE_EOS: self.player.set_state(gst.STATE_NULL) elif t == gst.MESSAGE_ERROR: err, debug = message.parse_error() print "Error: %s" % err, debug self.player.set_state(gst.STATE_NULL) def on_sync_message(self, bus, message): if message.structure is None: return message_name = message.structure.get_name() if message_name == "prepare-xwindow-id": win_id = self.windowId assert win_id imagesink = message.src imagesink.set_property("force-aspect-ratio", True) imagesink.set_xwindow_id(win_id) def startPrev(self): self.player.set_state(gst.STATE_PLAYING) print "should be playing" vidStream = Vid(wId) vidStream.startPrev() where wId is the window id of the widget im trying to get to display the output in. When I run this on the N900, the screen goes black and blinks. Any ideas? I'm dying here!

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  • 2 questions. IDO mode not caching properly / forcing buffers to named windows.

    - by user112043
    1 My ido mode does not properly cache filenames / folders. It will list files inside a folder, but from a while ago without any of the newer files showing. Any suggestions ? 2 In jde, when I have multiple windows open, compiling on one window will create a corresponding "* name of the class *" that will open on the next window in order. This is fine if I only have one window open but can I get some help writing a function that I could use to : Name a window Force all buffers of JDE compile server to only ever open in that window if it exists Force all run windows from jde in the form of * name of the class * to open in the same window if it exists. Jde automatically names the buffer " * name of the class * ", I will probably dig around the codes to find an easy fix for that... so if the code could just force all windows using a regexp containing * jde run - filename * or something along the lines would also work. Thanks for your help, first post here as well. I really would like just some ideas on what may be going wrong with 1, 2 if anyone is feeling kind.

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