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• Javascript - Concatenate Multiple NodeLists Together

  - by Emtucifor

  I was originally asking for an elegant way to simulate the Array.concat() functionality in IE or older browsers, because it seemed that concat was not supported. Only, of course it is and the reason the object didn't support it is because it wasn't an array. Oops! getElementsByTagName returns a NodeList, not an array. The real question, then, is: what's a good way to get a single list of all the form elements in a document (input, select, textarea, button) to loop through them? An array isn't required... a single NodeList would be perfect, too. Note that I'm using IE6 as this is for a corporate intranet (soon IE8 though).

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• How to make Databinding type safe and support refactoring

  - by Ian Ringrose

  When I wish to bind a control to a property of my object, I have to provide the name of the property as a string. This is not very good because: If the property is removed or renamed, I don’t get a compiler warning. If a rename the property with a refactoring tool, it is likely the data binding will not be updated. I don’t get an error until runtime if the type of the property is wrong, e.g. binding an integer to a date chooser. Is there a design-paten that gets round this, but still has the ease of use of data-binding? (This is a problem in WinForm, Asp.net and WPF and most likely lots of other systems) I have now found "workarounds for nameof() operator in C#: typesafe databinding" that also has a good starting point for a solution.

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• Access 2003 - Embedded ppt slide or Excel Spreadsheet in a form, how do I communicate?

  - by Justin

  So if I was to take a an access form, and embed either an excel spreadsheet into it, or a powerpoint slide/pres, how would I reference it in VBA code? So I know I have to set the libraries, name the frame of the OLE object, and use applicable syntax to whatever I want to do, with whatever I stick in the form, however the only things I have ever done with excel and/or powerpoint is automate the opening of a seperate window/application from access, not within the access form....so I am not sure?? if I said its a new Excel.Application, then set xls = to (the ss in the file, and not some file path of another excel file somewhere)? does that make sense?

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• .NET remoting manual configuration

  - by Quandary

  Question: In .NET remoting, I configure the client like this from a config file RemotingConfiguration.Configure("AsyncRemoteAPIclient.exe.config", False) Dim obj As New RemoteAPI.ServiceClass() (with this AsyncRemoteAPIclient.exe.config) <system.runtime.remoting> <application> <client> <wellknown type="RemoteAPI.ServiceClass, ServiceClass" url="http://localhost:8080/ServiceClass.rem" /> </client> <channels> <channel ref="http" port="0" /> </channels> </application> But when I replace the config file with manual configuration with the below code, it stops working, and starts complaining "ServiceClass or dependency not found". Dim chan As New System.Runtime.Remoting.Channels.Http.HttpChannel(0) System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(chan, False) ' Create an instance of the remote object Dim obj As RemoteAPI.ServiceClass obj = CType(Activator.GetObject(GetType(RemoteAPI.ServiceClass), "http://localhost:8080/ServiceClass.rem"), RemoteAPI.ServiceClass) What's wrong ?

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• Which cross threading invoke function is better for a control that is inherited?

  - by Stevoni

  I have a relatively simple question regarding the best way to call the DataGridView.Rows.Add function when it is inherited into the current control. Which is the best way to make the call to the inherited control? Call it directly in the invoke or call it using recursive-like function? They both seem to produce the same result, a row gets added and the quantity is returned, but which is the most efficient? The delegate: Private Delegate Function ReturnDelegate() As Object The two ways are: A) Private Overloads Function AddRow() As Integer If InvokeRequired Then Return CInt(Invoke(New ReturnDelegate(AddressOf AddRow))) Else Return Rows.Add() End If End Function Or B) Private Function RowsAdd() As Integer If Me.InvokeRequired Then Return CInt(Me.Invoke(New ReturnDelegate(AddressOf MyBase.Rows.Add))) Else Return MyBase.Rows.Add End If End Function

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• LINQ to Objects .Distinct() not pulling distinct objects

  - by Anthony Potts

  I have two ways that I am doing a fuzzy search for a customer. One is by an abbreviated name and the other is by the customers full name. When I take these two and then union them together (which I have read several places should remove distinct values) I get duplicates. Thinking that all I need to do is then call the .Distinct() method on this I also still get Duplicates. Do I need to implement some compare functionality in my customer object? My code: Dim shortNameMatch As List(Of ICustomer) = CustomerLibrary.GetCustomersByShortName(term) Dim custNameMatch As List(Of ICustomer) = CustomerLibrary.GetCustomersByCustName(term) Dim allMatch = (From a In (From s In shortNameMatch Select s).Union(From c In custNameMatch Select c) Select a).Distinct()

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• How to deserialize null array to null in c#?

  - by Aen Sidhe

  Here is my class: public class Command { [XmlArray(IsNullable = true)] public List<Parameter> To { get; set; } } When I serialize an object of this class: var s = new XmlSerializer(typeof(Command)); s.Serialize(Console.Out, new Command()); it prints as expected (xml header and default MS namespaces are omitted): <Command><To xsi:nil="true" /></Command> When I took this xml and tried to deserialize it I got stucked, because it always print "Not null": var t = s.Deserialize(...); if (t.To == null) Console.WriteLine("Null"); else Console.WriteLine("Not null"); How to force deserializer to make my list null, if it is null in xml?

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• Restoring database with SMO - Reporting progress problems

  - by madlan

  I'm using the below to restore a database in VB.NET. This works but causes the interface to lockup if the user clicks anything. Also, I cannot get the progress label to update incrementally, it's blank until the backup is complete then displays 100% Sub DoRestore() Dim svr As Server = New Server("Server\SQL2008") Dim res As Restore = New Restore() res.Devices.AddDevice("C:\MyDB.bak", DeviceType.File) res.Database = "MyDB" res.RelocateFiles.Add(New RelocateFile("MyDB_Data", "C:\MyDB.mdf")) res.RelocateFiles.Add(New RelocateFile("MyDB_Log", "C:\MyDB.ldf")) res.PercentCompleteNotification = 1 AddHandler res.PercentComplete, AddressOf ProgressEventHandler res.SqlRestore(svr) End Sub Private Sub ProgressEventHandler(ByVal sender As Object, ByVal e As PercentCompleteEventArgs) Label3.Text = "" ProgressBar.Value = e.Percent LblProgress.Text = e.Percent.ToString End Sub

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• Binding a list of checkboxes from view to posted collection in ASP.NET MVC 2

  - by mare

  Given the code below within which I render a bunch of checkboxes in my view and the code for controller, someone please explain how can I get the values of the checkboxes (I need the key and the checked status) in the controller. <% foreach (string mappingId in Model.Mappings) {%> <tr><td> <%=mappingId %><br /> <%=Html.Label("Checkbox_" + mappingId, "Sync?")%> <%=Html.CheckBox("Checkbox_" + mappingId, true) %> </td></tr> <% } %> [HttpPost] public ActionResult Sync(FormCollection collection) { foreach (var posted in collection) { // here the "posted" variable shows up in the debugger as // "Checkbox_AD0D1" as Value (AD0D1 being the key in my model) and of type "object" // of course, this line fails but it shows what I want to do bool currentCheckbox = (bool) posted; } return View(); }

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• C# equlivent of performSelectorOnMainThread

  - by jamone

  I haven't done much multithreading before and now find the need to do some background work and keep the UI responsive. I have the following code. data.ImportProgressChanged += new DataAccess.ImportDelegate(data_ImportProgressChanged); Thread importThread = new Thread( new ThreadStart(data.ImportPeopleFromFAD)); importThread.IsBackground = true; importThread.Start(); void data_ImportProgressChanged(int progress) { toolStripProgressBar.Value = progress; } //In my data object I have public void ImportPeopleFromFAD() { ImportProgressChanged(someInt); } But the UI doesn't get updated since the ImportProgressChanged() call is made on the background thread. In objective C I know you can use performSelectorOnMainThread and pass it a method to call using the main thread. What is the equivalent way of calling ImportProgressChanged() from the main thread?

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• Cannot implicitly convert type 'string' to 'System.Web.UI.WebControls.Unit'

  - by user203127

  hi, I ma getting error like Cannot implicitly convert type 'string' to 'System.Web.UI.WebControls.Unit' in the following code. How to fix this. protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { RadTab tab = new RadTab(); tab.Text = string.Format("New Page {0}", 1); RadTabStrip1.Tabs.Add(tab); RadPageView pageView = new RadPageView(); pageView.Height = "100px"; RadMultiPage1.PageViews.Add(pageView); BuildPageViewContents(pageView, RadTabStrip1.Tabs.Count); RadTabStrip1.SelectedIndex = 0; RadTabStrip1.DataBind(); } } Here I am getting error. pageView.Height = "100px"; How to fix this?

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• how to solve this Problem in asp.net crystal report.

  - by Ayyappan.Anbalagan

  Problem in crystal report After excecuting the bellow code,In my report page it ask like "The report you requested requires further information" server= user= password= databse= protected void Page_Load(object sender, EventArgs e) { MySqlConnection sqlcom = new MySqlConnection("server=localhost;userid=root;password=root;database=hemaepdb;"); MySqlCommand cmd = new MySqlCommand("SP_ViewBillDetails", sqlcom); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("p_Invoice_Id", MySqlDbType.Int16).Value = 1; cmd.Parameters.Add("p_Org_id", MySqlDbType.Int16).Value = 1; MySqlDataAdapter adapter = new MySqlDataAdapter(cmd); DataSet dsTest = new DataSet(); sqlcom.Open(); adapter.Fill(dsTest, "Table"); sqlcom.Close(); CrystalReportViewer1.Visible = true; ReportDocument myRpt = new ReportDocument(); myRpt.Load(Server.MapPath("CrystalReport.rpt")); myRpt.SetDatabaseLogon("root", "root", "localhost", "hemaepdb"); myRpt.SetDataSource(dsTest); CrystalReportViewer1.ReportSource = myRpt; }

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• Custom array class with assotiated objects

  - by FancyDancy

  I have a simple structure, it's just an array of model's objects. For example, it's a users with books. @books = Book.find(:all, :include = :users) I need to check, does user have a book? I have written a helper method: def has_book?(user_id) @books.select{|b| b.user_id == user_id}.any? end Then, i need to get only books from selected library def in_library(n) @books.select{|b| b.library == n} end I have tried to make custom Array class: class BooksList < Array def initialize(books) self << books end # its my custom methods def has_book?(user_id) self.select{|b| b.user_id == user_id}.any? end def in_library(n) self.select{|b| b.library == n} end end It works, but i have only one problem. I can't access Book's assotiated object (user). So i can't write: @books = BookList.new(Book.find(:all, :include => :users)) @books.first.user.id # it says undefined method `user' for #<Array:0x104b43e08>

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• Adding links to full change forms for inline items in django admin?

  - by David Eyk

  I have a standard admin change form for an object, with the usual StackedInline forms for a ForeignKey relationship. I would like to be able to link each inline item to its corresponding full-sized change form, as the inline item has inlined items of its own, and I can't nest them. I've tried everything from custom widgets to custom templates, and can't make anything work. So far, the "solutions" I've seen in the form of snippets just plain don't seem to work for inlines. I'm getting ready to try some DOM hacking with jQuery just to get it working and move on. I hope I must be missing something very simple, as this seems like such a simple task! Using Django 1.2.

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• Handling button presses in Gtk2::Image objects

  - by willert

  I've been trying to get an Gtk2::Image object in this perl Gtk2 application to get to react to button presses, but to no avail. The image shows as expected but the button events don't get handled. What am I missing? my $img = Gtk2::Image-new_from_file( $file ); $img-set_property( sensitive = 1 ); $img-can_focus( 1 ); $img-set_events([qw/ button-press-mask button-release-mask /]); $img-signal_connect( 'button-press-event' = sub { my ( $self, $event ) = @_; print STDERR "Coords: ", $event-get_coords; return; }); $window-add( $img ); $window-show_all;

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• c++ casting base class to derived class mess

  - by alan2here

  If I were to create a base class called base and derived classes called derived_1, derived_2 etc... I use a collection of instances of the base class, then when I retrieved an element and tried to use it I would find that C++ thinks it's type is that of the base class, probably because I retrieved it from a std::vector of base. Which is a problem when I want to use features that only exist for the specific derived class who's type I knew this object was when I put it into the vector. So I cast the element into the type it is supposed to be and found this wouldn't work. (derived_3)obj_to_be_fixed; And remembered that it's a pointer thing. After some tweaking this now worked. *((derived_3*)&obj_to_be_fixed); Is this right or is there for example an abc_cast() function that does it with less mess?

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• iPhone Objective-C/Plain C Memory Management

  - by toc777

  Hi everyone, I understand Objective-C memory management but I'm using Core Graphics functionality such as CGRect, CGPoint, CGImageRef etc.. which is written in plain C. My question is how do i manage this memory or is it already handled for me? According to the Apple documentation if an Apple Objective-C function doesn't have copy, new or create in it the returned object is managed for you using autorealease. Is this true for the Core Graphics stuff also? (Well i guess it wont be using autorealease but maybe something similar?) Thanks for taking the time to read this.

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• file path of a MenuItem target with cmdOpen action

  - by maranas

  I am trying to acquire the file path of an item within the NSMenuItem object. Using [objectname action] i am able to properly acquire the action (cmdOpen). But [objectname target] returns a null value. According to the documentation in the apple developer website, if the value is null, the action is sent to the first-responder. I want to be able to dynamically access the file path of the target file. Is there a way to do this without changing the program design?

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• Automating Visual Studio 2010 from a console app

  - by JoelFan

  I am trying to run the following code (which I got from here). The code just creates a new "Output" pane in Visual Studio and writes a few lines to it. Public Sub WriteToMyNewPane() Dim win As Window = _ DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput) Dim ow As OutputWindow = win.Object Dim owPane As OutputWindowPane Dim cnt As Integer = ow.OutputWindowPanes.Count owPane = ow.OutputWindowPanes.Add("My New Output Pane") owPane.Activate() owPane.OutputString("My text1" & vbCrLf) owPane.OutputString("My text2" & vbCrLf) owPane.OutputString("My text3" & vbCrLf) End Sub Instead of running it as a Macro, I want to run it as an independent console application that connects to a currently running instance of Visual Studio 2010. I'm having a hard time figuring out how to set the value of DTE. I think I may need to call GetActiveObject, but I'm not sure how. Any pointers?

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• Active printer problem in Printing word document through VB.net

  - by sweety

  Hi My printer name is \\abc\First Floor A-Block its taking name \abc\First Floor A-Block on NE04:. How should i print it Private oWord As Word.Application Dim lobjDoc As Word.Document Dim strFolder as String Dim pd As New PrintDocument Dim strPrintername as String oWord = CreateObject("Word.Application") oWord.DisplayAlerts = Word.WdAlertLevel.wdAlertsNone oWord.ActivePrinter =strPrintername strFolder="D:\testdoc.prn" ' Here I am giving the printer name which is on network, But its taking name \abc\First Floor A-Block on NE04: lobjDoc = oWord.Documents.Open(CType(strFolder, Object)) lobjDoc.PageSetup.FirstPageTray = Word.WdPaperTray.wdPrinterAutomaticSheetFeed lobjDoc.PageSetup.OtherPagesTray = Word.WdPaperTray.wdPrinterAutomaticSheetFeed lobjDoc.PrintOut(Background:=False, Append:=False, OutputFileName:=strFolder, PrintToFile:=True) 'here its giving error about printer settings lobjDoc.Close(SaveChanges:=False) Is there any way to print word document with all its content through PrintDocument? thanks

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• Difference between "traditional" COM and COM+ (in Component Services)

  - by kizzx2

  By the "traditional" way I mean registering the DLL in registry. There seems to be another method to set up it by going to mmc-Component Services-COM+ Applications and adding the .tlb file. I have a COM library that supports both methods. When it installs, it registers itself in the registry as a COM component and it works fine. However, when I added the .tlb file using the Component Services method, the behavior seems to be different and it starts giving out errors. I suspect it has something to do with marshaling and inter-process object transfer? (Sorry, I'm really a noob in the COM area) Can anyone point me to a good resource to clear my understanding?

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• What is the best way to manage one's session variables?

  - by donde

  In my .NET web app, I keep basic user info in a user session object. I also usually keep a director class in the session; which is basically just has info about whatever thing it being worked on on that screen (like a customer id). I am trying to keep from adding a ton of sessions. I also want to make sure at any given time ONLY the sessions that are necessary are in memory. This means I need an effective way of managing my session variables. Any suggestions?

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• Error after installing scala plugin of netbeans

  - by ghedas

  I installed the scala plugin on my netbeans and followed the instruction of this page: http://wiki.netbeans.org/Scala68v1#Scala_Plugins_for_NetBeans_6.8_v1.x_.28RC2.29 but after it completed correctly step by step, when I make an empty project (Hello world!), the project has an error! The empty project is here: package scalaapplication1 object Main { /** * @param args the command line arguments */ def main(args: Array[String]): Unit = { println("Hello, world!") } } and the console error report is: ...\NetBeansProjects\ScalaApplication2\nbproject\build-impl.xml:403: The following error occurred while executing this line: ...\NetBeansProjects\ScalaApplication2\nbproject\build-impl.xml:236: scalac doesn't support the "fork" attribute Is there any suggestion about it?!

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• jQuery in Opera User JS Doesn't Work

  - by Axonn

  Hello ::- ). I'm playing with some Opera User JS. I included "1jquery.min.js" in my User JS folder (1 in front because Opera loads them alphabetically). Unfortunately, it doesn't appear to be working. window.onload = OnWindowLoad; $(document).ready(function() { alert ($('#area_19')); }); function OnWindowLoad () { alert ($('#area_19')); alert(document.getElementById("area_19")); } What's interesting about this code is that the first two alerts come back in NULL, but the last one does find the object! So the element definitely exists in the page, but my jQuery seems unable to get it. What's even stranger is that the jQuery "ready" function works, indicating that I do have jQuery capability. I'm quite puzzled about all this ::- /. Hopefully somebody can give me a clue ::- ).

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• using Java enums or public static fields in MATLAB

  - by Jason S

  I'm wondering how in MATLAB you can get a reference to a Java enum or static public field. In MATLAB, if you are trying to use Java objects/methods, there are equivalents to Java object creation / method call / etc.: Java: new com.example.test.Foo(); MATLAB: javaObject('com.example.test.Foo'); Java: com.example.test.Foo.staticMethod(); MATLAB: javaMethod('staticMethod', 'com.example.test.Foo'); Java: SomeEnum e = com.example.test.SomeEnum.MY_FAVORITE_ENUM; MATLAB: ????? Java: int n = com.example.test.Foo.MAX_FOO; MATLAB: ?????

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