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• convert string data array to list

  - by prince23

  hi, i have an string data array which contains data like this 5~kiran 2~ram 1~arun 6~rohan now a method returns an value like string [] data public string [] names() { return data.Toarray() } public class Person { public string Name { get; set; } public int Age { get; set; } } List persons = new List(); string [] names =names(); now i need to copy all the data from an string array to an list and finally bind to grid view gridview.datasoutrce= persons how can i do it. is there any built in method to do it thanks in advance prince

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• Silverlight dataGrid binding with ria Service doesn' work

  - by Abdulrhman

  hi every one i'm new to Silverlight and it's totally driving me crazy !! i'm using SL4 and trying to bind datagrid with a Domain Service Query: what i did exactly is i generate an ado.net entity model from my database, then create a domain Service class from this model. then in my page i put Datagrid & button. in the click event for this button i write this code: RRDomainContext rr = new RRDomainContext(); this.dataGrid1.ItemsSource = rr.Rooms; this.rr.Load(this.rr.GetRoomsQuery()); when this method executed the nothing changed at the datagrid. can anyone help me with this ?

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• Using entity framework to detect changes in related table and action appropriate inserts and deletes

  - by Kohan

  Lets say i have a Person table, a Role table with a trel table PersonRoles linking them as many to many. I create a new person and assign them to 2 roles (role 1, role 3). I then want to edit this person; so i retrieve their data and bind their roles to a checkboxes. I change the values (Deselect role 1 and select role 2 instead) I then post this data back through a viewmodel. Can i then get Entity Framework to update these roles for me, as in delete the entry in PersonRoles to role 1 and then add a new entry as role 2? Or do i have to do the logic for this myself? Cheers, Kohan

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• jQuery, my function is return a FUNCTION and not an integer?

  - by AnApprentice

  Hello, i have the following func: viewModel.unreadCount = ko.dependentObservable(function() { var unreadCount = 0; for (var i = 0; i x< xxxxxxxxxxxx.length; i++) { if (xxxxxx == false) { unreadCount++; } } return unreadCount; }, viewModel); When I use this in knockout JS, I can't do a simple if (viewModel.unreadCount()==0), like this: <div data-bind="visible: viewModel.unreadCount()==0"> It turns out because when I run: <p>${ (typeof viewModel.unreadCount) }</p> I get "function" Any ideas why that is and how I can get it to return an INT so I can do an if statement? Thanks

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• Arbitrary Header content for each row in WPF datagrid

  - by tk

  I'm trying to put row header text based on a converter function of the index of the row. I found a way to bind to the datagridrow like below, but i can't find how to get the row index of the datagridrow object. <DataTemplate x:Key="MyRowHeaderTemplate" DataType="DataRowView"> <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Margin="1,0,1,0" Padding="1,0,1,0" Text="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Item}"/> </DataTemplate> How can i get the row index and use my converter function to set the row header text?

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• Socket ReceiveAll

  - by rielz

  I am trying to capture ip packets in c#. Everything is working fine, except that i only get outgoing packets. My Code: using (Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP)) { sock.Bind(new IPEndPoint(MYADDRESS, 0)); sock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, true); sock.IOControl(IOControlCode.ReceiveAll, BitConverter.GetBytes(1), null); while (true) { byte[] buffer = new byte[sock.ReceiveBufferSize]; int count = sock.Receive(buffer); // ... } } The problem is definitely my pc! But maybe there is a workaround ...

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• Must a Language that Implements Monads be Statically Typed?

  - by Morgan Cheng

  I am learning functional programming style. From this link http://channel9.msdn.com/shows/Going+Deep/Brian-Beckman-Dont-fear-the-Monads/, Brian Beckman gave a brilliant introduction about Monad. He mentioned that Monad is about composition of functions so as to address complexity. A Monad includes a unit function that transfers type T to an amplified type M(T); and a Bind function that, given function from T to M(U), transforms type M(T) to another type M(U). (U can be T, but is not necessarily). In my understanding, the language implementing monad should be type-checked statically. Otherwise, type errors cannot be found during compilation and "Complexity" is not controlled. Is my understanding correct?

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• Custom Grid LINQ to SQL help

  - by user488361

  Following is my custome cotrol grid... public partial class LinqGrid : UserControl { object tmpDataTable = new object(); public LinqGrid() { InitializeComponent(); } public void Bind(System.Data.Linq.Table listSource) where T : class { Project.dbClassesDataContext dbc = new Project.dbClassesDataContext(); tmpDataTable = listSource; var query = (from c in listSource select c); dgvRecords.DataSource = query.Take(10).ToList(); } private void btnNext_Click(object sender, EventArgs e) { // now what i have to do here if i want next 10 records.....means how to retrive tmpDataTable object here... ??? i can't find Type of variable....?? plz help me.... } }

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• WPF: DataGrid Custom. ColumnDesign with my own classes

  - by user437899

  Hi, iam looking for a datagrid which contains objects from my class. class user { string name; int ID; ... } i tried AutoGenerateColumns = true. this will add columns (name, ID, ... like the properties of my class) but i want a different design. not all attributes from the object shold be shown and the columnheader shouldn't be generated from the variablenames... if i build a custom. column-design, i cant add my objects / they will not be displayed. is it possible to define my own columns according to my objects/class. i read about databindings, but i have no idea how i can bind objects/classes in WPF. (in Visual Studio i cant choose my class as datacontext)

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• Passing in a value to a usercontrol through a foreach loop

  - by LooDaFunk

  in my asp.net mark up I have a foreach loop that iterates through a simple list. In this foreach loop I am adding a new user control and attempting to pass in the value from the loop. However, this value just wont budge and get inside that damn control! Anyone have any suggestions? <%foreach (userInfo i in this.items) { %> <uc1:ItemControl ID="ItemControl" runat="server" UserID='<%#Eval("userID") %>'/> <%} %> userID is a public property in the control, when it goes to set, the value is just literally : <%#Eval("userID") %. I've tried #Bind and =Value but nothing seems to work. Any help would be appreciated!

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• asp:SqlDataSource binded to asp:DropDownList

  - by _simon_

  I have a asp:SqlDataSource and asp:DropDownList components on my page. On normal page it works ok. Now I'd like to put this on new page with url like ...mypage.aspx?transactionID=2. In Page_Load I would like to set Transaction drop down selected index to 2. But it always binds to 1. I assume, that things happen in this order: in Page_Load I set selected index to 2. Then asp:SqlDataSource's select statement executes and binds to DropDownList. That's why selected index of my DropDownList is always 1, no matter what I set it in Page_Load. So, how can I bind asp:SqlDataSource to asp:DropDownList and also set it's selected index parameter to some integer?

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• JBoss 4.2.3 Servlet API 2.5 JSF 2.0 Hibernate 3.0 Support Added [Solved]

  - by AZ_

  While deploying my project on Redhat 6 with Jboss 4.2.3 I was having following difficulties so I decided to put it on stackoverflow so that it can help other people. If anyone could suggest a good title so that it can easily be searched, please Q: How to make Jboss 4.2.x to ignore old JSF libraries and use one within your project libs? Q: How to make Jboss scan specific path for WAR file scanning? Q: How to bind Jboss with IP address rather then localhost? Q: Where Jboss put exploded WAR file? Q: Hibernate-annotations conflict with Jboss 4.2.3 annotations and throwing following Exception. java.lang.ClassCastException: org.hibernate.validator.event.ValidateEventListener cannot be cast to org.hibernate.event.PreInsertEventListener Q: How to run JSF 2.0.x on JBoss 4.0.x ? As JSF 2.0 supports at least Servlet 2.5 API and JBoss has Tomcat 5.x that can support Servlet 2.4 at max. Q: How to change Servlet version of a Dynamic Web Project?

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• WPF - How do I style a row based on a binding property value?

  - by Nick

  Hey! So I am trying to bind a collection of objects (IList<) to a WPF datagrid. I would like to make the row background a different color if the 'artist' property is null or empty. I am checking the value stored at the property on the LoadingRow datagrid event. Currently my implementation seems to style all of the rows with an empty or null 'artist' property correctly. The problem is that is also styles the rows where the property is not null or empty in some cases. So some rows are given the red background even though the rows 'artist' property is not null. Can anyone tell me why this could be?? Here is the LoadingRow event: private void trackGrid_LoadingRow(object sender, DataGridRowEventArgs e) { Track t = e.Row.DataContext as Track; if (String.IsNullOrEmpty(t.Artist)) { e.Row.Background = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(255, 255, 125, 125)); } }

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• Problem during JBoss Launch

  - by Rob

  Hi folks, I've a problem with JBoss 3.2.6. When I try to launch it, I get this error. 09:19:22,449 ERROR [StatefulSessionContainer] Starting failed jboss.j2ee:jndiName=TypicalBean,service=EJB java.rmi.ServerException: Could not bind home; nested exception is: javax.naming.CommunicationException: Network is unreachable [Root exception is java.io.IOException: Network is unreachable] at org.jboss.proxy.ejb.ProxyFactory.bindProxy(ProxyFactory.java:385) at org.jboss.proxy.ejb.ProxyFactory.start(ProxyFactory.java:187) and so on ... I use Java 1.6, and I can access to the Web, so I can't really figure out why this problem appears ... Thanks (and sorry for my poor english) Rob

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• I/O Asynchronous Completion

  - by lockedscope

  In the following, it is said that an I/O handle must be associated with the thread pool but i could not find where in the given example an handle is associated with the thread. Which function or code helps to bind the file handle in that example? Using asynchronous I/O completion events, a thread from the thread pool processes data only when the data is received, and once the data has been processed, the thread returns to the thread pool. To make an asynchronous I/O call, an operating-system I/O handle must be associated with the thread pool and a callback method must be specified. When the I/O operation completes, a thread from the thread pool invokes the callback method. http://msdn.microsoft.com/en-us/library/aa720215(VS.71).aspx

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• Function Composition in C++

  - by Channel72

  There are a lot of impressive Boost libraries such as Boost.Lambda or Boost.Phoenix which go a long way towards making C++ into a truly functional language. But is there a straightforward way to create a composite function from any 2 or more arbitrary functions or functors? If I have: int f(int x) and int g(int x), I want to do something like f . g which would statically generate a new function object equivalent to f(g(x)). This seems to be possible through various techniques, such as those discussed here. Certainly, you can chain calls to boost::lambda::bind to create a composite functor. But is there anything in Boost which easily allows you to take any 2 or more functions or function objects and combine them to create a single composite functor, similar to how you would do it in a language like Haskell?

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• Sending http headers with python

  - by Niklas R

  I've set up a little script that should feed a client with html. import socket sock = socket.socket() sock.bind(('', 8080)) sock.listen(5) client, adress = sock.accept() print "Incoming:", adress print client.recv(1024) print client.send("Content-Type: text/html\n\n") client.send('<html><body></body></html>') print "Answering ..." print "Finished." import os os.system("pause") But it is shown as plain text in the browser. Can you please tell what I need to do ? I just can't find something in google that helps me.. Thanks.

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• How to set up a has-many relationship in Cocoa?

  - by SphereCat1

  I'm building a (very) simple FTP app in Cocoa, and I need to store information on the different types of servers that are supported. So, I've created a ServerType class, which stores all of the relevant information about a single type of server. I then have a ServerTypes class which is designed to manage all of the ServerType classes that are created. My question is how to set up the relationship between the two objects. Is there a preferred method to do so? Also, since Objective-C doesn't support non-instance classes, where should I create an instance of ServerTypes that will have to be used throughout the entire program? Or is there a better way to do that? I need it to be KVC compliant so That I can bind one of the ServerType properties to an NSPopupBox. Sorry about the large volume of questions, I'm fairly new to Cocoa and Objective-C. If you need to see code, just ask and I'll be happy to add some. :) SphereCat1

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• Having issues when trying to insert an ajax response which is an html block into an element on IE 8

  - by user340812

  Hello Everyone just like my title states, I am having issues with IE8 and innerHTML. For whatever reason, when I make an ajax call which returns an html block and try to insert it into an element using innerHTML, the browser gives me an error "Unknown Error Code: 0". The interesting part of this is that, if the message response does not have html element, innerHTML works. My code is like so: setTimeout(function() { element.innerHTML = context.response.message; }, 1000).bind(context) WORKS: context.response.message = 'String'; Does not WORK: context.response.message = '<p>String</p>';

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• Auto enter pass phrase in case of Python ssl Client/Server

  - by rauch

  I need to create Client/Server application to send files from clients to Server. I use simple ssl sockets for that and authenticate with certificates. ms = socket.socket(socket.AF_INET, socket.SOCK_STREAM) ssl_sock = ssl.wrap_socket(ms, keyfile=".../newCA/my_client.key", certfile=".../newCA/my_client.crt", server_side=0, cert_reqs=ssl.CERT_REQUIRED, ca_certs=".../newCA/CA/my-ca.crt" ) ssl_sock.connect((HOST, MPORT)) And Server side: msock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.ssl_sock = ssl.wrap_socket(msock, keyfile=".../newCA/my_server.key", certfile=".../newCA/my_server.crt", server_side=1, cert_reqs=ssl.CERT_REQUIRED, ca_certs=".../newCA/CA/my-ca.crt" ) self.ssl_sock.bind(('', self.PORT)) self.ssl_sock.listen(self.QUEUE_MAX) The problem is the following: when client tries to connect to Server, it requires Enter the pass phrase for private key for Both: for Server-side and Client-side. In Java we need to set System Property: javax.net.ssl.keyStorePassword="" and it has to be used automatically, But how is it been used in Python? I can't enter pass phrase all time the client connects.

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• Restrict violation of architecture - asp.net MVP

  - by Srikanth

  If we had a defined hierarchy in an application. For ex a 3 - tier architecture, how do we restrict subsequent developers from violating the norms? For ex, in case of MVP (not asp.net MVC) architecture, the presenter should always bind the model and view. This helps in writing proper unit test programs. However, we had instances where people directly imported the model in view and called the functions violating the norms and hence the test cases couldn't be written properly. Is there a way we can restrict which classes are allowed to inherit from a set of classes? I am looking at various possibilities, including adopting a different design pattern, however a new approach should be worth the code change involved.

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• How to make TwoWay binding on properties of ObservableCollection of custom class using mvvm pattern?

  - by mill

  I have the following class: public class UserGroup { public string GroupName { get; set; } public bool IsIntheGroup{ get; set; } } I want to bind an ObservableCollection of UserGroup items to listbox containing checkbox’s for each item in the collection and the checkbox is cheked based on the IsIntheGroup property of the UserGroup. In my ViewModel I made an ObservableCollection of the UserGroup class: public ObservableCollection Groups { get; set; } and loaded its contents (instances of UserGroup) from my database model I used the following code in my view: ListBox ItemsSource="{Binding Groups, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" ListBox.ItemTemplate DataTemplate StackPanel Orientation="Horizontal" CheckBox IsChecked="{Binding IsIntheGroup, Mode=TwoWay}"/ TextBlock Text="{Binding GroupName}" / /StackPanel /DataTemplate /ListBox.ItemTemplate /ListBox The problem is I am not notified when the user checks/unchecks a check box in the list so my two way binding failed… How do I do a two way binding in such a case?

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• toplink prefixes table with TL_ while update operation

  - by Dewfy

  I have very simple named query on JPA (toplink ): UPDATE Server s SET s.isECM = 0 I don't carry about cache or validity of already preloaded entities. But database connection is performed from restricted account (only INSERT/UPDATE/DELETE). It is appeared that toplink on this query executes (and failed since TL_Server is not exists) very strange SQL: INSERT INTO TL_Server (elementId, IsECM) SELECT t0.ElementId, ? FROM Element t0, Server t1 WHERE ((t1.elementId = t0.ElementId) AND (t0.elementType = ?)) bind => [0, Server] What is this? How the simple UPDATE appears an INSERT? Why toplink queries TL_?

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• Changing background image on accordion change - jQuery Ui

  - by Coughlin

  I am using this code: $('.ui-accordion').bind('accordionchange', function(event, ui) { $(this).next().next().css({'background-image':'images/green-bg.jpg'}); //ui.newHeader // jQuery object, activated header //ui.oldHeader // jQuery object, previous header // ui.newContent // jQuery object, activated content // ui.oldContent // jQuery object, previous content }); To try to change the background image of the PREVIOUS header after it changes. I see that the jquery docs supply the object for oldHeader, but I am trying to change the CSS of that element. Any ideas how I would do that? So You go to the next one it goes green, then the current one is going to be red. Thanks, Ryan

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• How to initialize F# list when size is unknown, using while..do loop

  - by James Black

  I have a function that will parse the results of a DataReader, and I don't know how many items are returned, so I want to use a while..do loop to iterate over the reader, and the outcome should be a list of a certain type. (fun(reader) -> [ while reader.Read() do new CityType(Id=(reader.GetInt32 0), Name=(reader.GetString 1), StateName=(reader.GetString 2)) ]) This is what I tried, but the warning I get is: This expression should have type 'unit', but has type 'CityType'. Use 'ignore' to discard the result of the expression, or 'let' to bind the result to a name. So what is the best way to iterate over a DataReader and create a list?

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