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  • sOperator as and generic classes

    - by abatishchev
    I'm writing .NET On-the-Fly compiler for CLR scripting and want execution method make generic acceptable: object Execute() { return type.InvokeMember(..); } T Execute<T>() { return Execute() as T; /* doesn't work: The type parameter 'T' cannot be used with the 'as' operator because it does not have a class type constraint nor a 'class' constraint */ // also neither typeof(T) not T.GetType(), so on are possible return (T) Execute(); // ok } But I think operator as will be very useful: if result type isn't T method will return null, instead of an exception! Is it possible to do?

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  • Is POSTing a Dictionary to an .NET MVC action possible?

    - by Brenton Alker
    I have a form which contains a series of fields like: <input type="text" name="User[123]" value="Alice" /> <input type="text" name="User[456]" value="Bob" /> ... Where the index of the User array (123 and 456) are ID's associated with the value. I'm trying to update these values in the controller. My thinking is that a Dictionary that maps ID to name would work, but creating the action like: public void Save(Dictionary<string, string> user) { // ... } results in the user parameter being null. So, is passing a Dictionary possible? or, is there another method to achieve this?

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  • What is stopping data flow with .NET 3.5 asynchronous System.Net.Sockets.Socket?

    - by TonyG
    I have a .NET 3.5 client/server socket interface using the asynchronous methods. The client connects to the server and the connection should remain open until the app terminates. The protocol consists of the following pattern: send stx receive ack send data1 receive ack send data2 (repeat 5-6 while more data) receive ack send etx So a single transaction with two datablocks as above would consist of 4 sends from the client. After sending etx the client simply waits for more data to send out, then begins the next transmission with stx. I do not want to break the connection between individual exchanges or after each stx/data/etx payload. Right now, after connection, the client can send the first stx, and get a single ack, but I can't put more data onto the wire after that. Neither side disconnects, the socket is still intact. The client code is seriously abbreviated as follows - I'm following the pattern commonly available in online code samples. private void SendReceive(string data) { // ... SocketAsyncEventArgs completeArgs; completeArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnSend); clientSocket.SendAsync(completeArgs); // two AutoResetEvents, one for send, one for receive if ( !AutoResetEvent.WaitAll(autoSendReceiveEvents , -1) ) Log("failed"); else Log("success"); // ... } private void OnSend( object sender , SocketAsyncEventArgs e ) { // ... Socket s = e.UserToken as Socket; byte[] receiveBuffer = new byte[ 4096 ]; e.SetBuffer(receiveBuffer , 0 , receiveBuffer.Length); e.Completed += new EventHandler<SocketAsyncEventArgs>(OnReceive); s.ReceiveAsync(e); // ... } private void OnReceive( object sender , SocketAsyncEventArgs e ) {} // ... if ( e.BytesTransferred > 0 ) { Int32 bytesTransferred = e.BytesTransferred; String received = Encoding.ASCII.GetString(e.Buffer , e.Offset , bytesTransferred); dataReceived += received; } autoSendReceiveEvents[ SendOperation ].Set(); // could be moved elsewhere autoSendReceiveEvents[ ReceiveOperation ].Set(); // releases mutexes } The code on the server is very similar except that it receives first and then sends a response - the server is not doing anything (that I can tell) to modify the connection after it sends a response. The problem is that the second time I hit SendReceive in the client, the connection is already in a weird state. Do I need to do something in the client to preserve the SocketAsyncEventArgs, and re-use the same object for the lifetime of the socket/connection? I'm not sure which eventargs object should hang around during the life of the connection or a given exchange. Do I need to do something, or Not do something in the server to ensure it continues to Receive data? The server setup and response processing looks like this: void Start() { // ... listenSocket.Bind(...); listenSocket.Listen(0); StartAccept(null); // note accept as soon as we start. OK? mutex.WaitOne(); } void StartAccept(SocketAsyncEventArgs acceptEventArg) { if ( acceptEventArg == null ) { acceptEventArg = new SocketAsyncEventArgs(); acceptEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(OnAcceptCompleted); } Boolean willRaiseEvent = this.listenSocket.AcceptAsync(acceptEventArg); if ( !willRaiseEvent ) ProcessAccept(acceptEventArg); // ... } private void OnAcceptCompleted( object sender , SocketAsyncEventArgs e ) { ProcessAccept(e); } private void ProcessAccept( SocketAsyncEventArgs e ) { // ... SocketAsyncEventArgs readEventArgs = new SocketAsyncEventArgs(); readEventArgs.SetBuffer(dataBuffer , 0 , Int16.MaxValue); readEventArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnIOCompleted); readEventArgs.UserToken = e.AcceptSocket; dataReceived = ""; // note server is degraded for single client/thread use // As soon as the client is connected, post a receive to the connection. Boolean willRaiseEvent = e.AcceptSocket.ReceiveAsync(readEventArgs); if ( !willRaiseEvent ) this.ProcessReceive(readEventArgs); // Accept the next connection request. this.StartAccept(e); } private void OnIOCompleted( object sender , SocketAsyncEventArgs e ) { // switch ( e.LastOperation ) case SocketAsyncOperation.Receive: ProcessReceive(e); // similar to client code // operate on dataReceived here case SocketAsyncOperation.Send: ProcessSend(e); // similar to client code } // execute this when a data has been processed into a response (ack, etc) private SendResponseToClient(string response) { // create buffer with response // currentEventArgs has class scope and is re-used currentEventArgs.SetBuffer(sendBuffer , 0 , sendBuffer.Length); Boolean willRaiseEvent = currentClient.SendAsync(currentEventArgs); if ( !willRaiseEvent ) ProcessSend(currentEventArgs); } A .NET trace shows the following when sending ABC\r\n: Socket#7588182::SendAsync() Socket#7588182::SendAsync(True#1) Data from Socket#7588182::FinishOperation(SendAsync) 00000000 : 41 42 43 0D 0A Socket#7588182::ReceiveAsync() Exiting Socket#7588182::ReceiveAsync() - True#1 And it stops there. It looks just like the first send from the client but the server shows no activity. I think that could be info overload for now but I'll be happy to provide more details as required. Thanks!

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  • c# HTTPListener encoding issue

    - by Rob Griffin
    I have a Java application sending HTTP requests to a C# application. The C# app uses HTTPListener to listen for requests and respond. On the Java side I'm encoding the URL using UTF-8. When I send a \ character it gets encoded as %5C as expected but on the C# side it becomes a / character. The encoding for the request object is Windows-1252 which I think may be causing the problem. How do I set the default encoding to UTF-8? Currently I'm doing this to convert the encoding: foreach (string key in request.QueryString.Keys) { if (key != null) { byte[] sourceBytes =request.ContentEncoding.GetBytes(request.QueryString[key]); string value = Encoding.UTF8.GetString(sourceBytes)); } } This handles the non ASCII characters I'm also sending but doesn't fix the slash problem. Examining request.QueryString[key] in the debugger shows that the / is already there.

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  • Storing links to internal content pages in ASP.NET MVC

    - by mare
    I'm using a route like this routes.MapRoute( "PageBySlug", RouteType.Regular, "{slug}", new {controller = "Page", action = "Display", slug = "Default"}, null ); to map request to ~/Some-Page-Slug to ~/Page/Display/Some-Page-Slug. When adding content, user can choose to link to existing pages to create references and I then store those links in this format in the datastore: "/Some-Page-Slug". When I run the app in Cassini and pull the link out from datastore and attach it to A tag it looks like this http://localhost:93229/Some-Page-Slug and this link works. But when running the application in virtual directory under some website in IIS, the attached link generates this URL http://localhost/Some-Page-Slug, when it should be http://localhost/virtualdir/Some-Page-Slug. Of course, this generates 404 error. How can I solve this to be universally useful and working under all circumstances? Should I store it differently in the database or should I transform it into correct form in my Views at runtime and how to do that?

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  • CFSocketConnectToAddress and unrecognized selector sent to instance

    - by madmik3
    Hello, I am somewhat new to iPhone dev and I have been getting unrecognized selector when I call CFSocketConnectToAddress in this code. I think it might be something basic that I am doing wrong. Any idea? this is the complete error I get. NSInvalidArgumentException unrecognized selector sent to instance 0x3922170 0x3922170 is the calling class. - (BOOL)connect { CFSocketRef mySocket = CFSocketCreate(kCFAllocatorDefault, PF_INET, SOCK_DGRAM,IPPROTO_UDP, 0, socketCallback, NULL); @try { CFDataRef data = (CFDataRef)[_netService addresses]; CFSocketConnectToAddress(mySocket, data, 500); } @catch (NSException * e) { NSLog([e name]); NSLog([e reason]); } //char joke[] = "Why did the chicken cross the road?"; //CFSocketError err = CFSocketSendData(mySocket, joke, (strlen(joke)+1), 10); return true; } void socketCallback ( CFSocketRef s, CFSocketCallBackType callbackType, CFDataRef address, const void *data, void *info) { }

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  • The underlying connection was closed: An unexpected error occurred on a receive

    - by Dave
    Using a console app which runs as a scheduled task on Azure, to all a long(ish) running webpage on Azure. Problem after a few minutes: The underlying connection was closed: An unexpected error occurred on a receive //// used as WebClient doesn't support timeout public class ExtendedWebClient : WebClient { public int Timeout { get; set; } protected override WebRequest GetWebRequest(Uri address) { HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address); if (request != null) request.Timeout = Timeout; request.KeepAlive = false; request.ProtocolVersion = HttpVersion.Version10; return request; } public ExtendedWebClient() { Timeout = 1000000; // in ms.. the standard is 100,000 } } class Program { static void Main(string[] args) { var taskUrl = "http://www.secret.com/secret.aspx"; // create a webclient and issue an HTTP get to our url using (ExtendedWebClient httpRequest = new ExtendedWebClient()) { var output = httpRequest.DownloadString(taskUrl); } } }

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  • Confusion about MVC Routes

    - by yang
    What is the problem below? routes.MapRoute( "Default2", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "test" } // Parameter defaults ); routes.MapRoute( "Default1", // Route name "{controller}/{action}/{name}", // URL with parameters new { controller = "Home", action = "Report", name = "" } // Parameter defaults ); When I navigate to /home/index "id" parameter takes the default value of "test" but when I navigate to home/report the name parameter is null. In short, if the route definition is the first in the route table, then the parameter takes its default value. But the others below don't.

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  • Why & When should I use SPARSE COLUMN? (SQL SERVER 2008)

    - by priyanka.sarkar
    After going thru some tutorials on SQL SERVER 2008's new feature SPARSE COLUMN, I have found that it doesn't take any space if the column value is 0 or null but when there is a value, it takes 4 times the space a regular(non sparse) column holds. If my understanding is correct, then why I will go for that at the time of database design? And if I use that, then at what situation so I be? Also out of curiosity, how come no space get's reserve when a column is defined as sparse column(I mean to say, what is the internal implementation for that) Thanks in advance

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  • Error loading Variables stage.loaderInfo - AS3

    - by Dimitree
    I have a Document class that loads variables from Facebook with the use of stage.loaderInfo var connect:FacebookConnectObject = new FacebookConnectObject( facebook, API_KEY, this.stage.loaderInfo ); But when I change the Document class (with another one responsible for the layout of my app), and try call the above from a movieclip that exists in my application with the use: var facebook_class:FacebookAp = new FaceBppkApp addChild(facebook_class) I get error TypeError: Error #1009: Cannot access a property or method of a null object reference. I believe the error comes fro this line this.stage.loaderInfo since I changed the scope... How I am supposed to fix that?

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  • Intent.getInt() doesn't work on ICS, but works on JB

    - by ObAt
    I use this code to send parameters when I start a new Activity: Intent inputForm = new Intent(getActivity(), InputForm.class); Bundle b = new Bundle(); b.putInt("item", Integer.parseInt(mItem.id)); //Your id inputForm.putExtras(b); //Put your id to your next Intent startActivity(inputForm); And I use this code for reading the parameters in the inputForm Activity: Bundle b = getIntent().getExtras(); if (b != null) { int value = b.getInt("item"); ID = value; } Toast.makeText(getApplication(), "MIJN ID:" + Integer.toString(ID), Toast.LENGTH_LONG).show(); When I run this code on my Samsung Tab 10.1 GT-P7510 ID is alsways 0, when I run the same code on my Galaxy S3 with JB the code just works fine. Can someone help me? Thanks in advance, ObAt

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  • How to attach a sample grabber to the playcap sdk sample

    - by Mr Bell
    I want to get access to a webcam's frame image data so I can composite it with some other data. The playcap sample in the windows sdk directshow folder can show you a window streaming the webcam, but doesn't demonstrate access to the bytes. Someone mentioned that I could use a samplegrabber filter attached to a null rendered to gain access to the frame data. Unfortunately I haven't the first clue how to do this. How can I modify the playcap sample to attach a sample grabber and access the frame bytes? visual studio 2008 c++

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  • parsing string off a configuration using strtok in C

    - by Jessica
    in the configuration file i have entries similar to this one: filepath = c:\Program Files\some value Where the path can contain spaces and there are no quotes on that string. I tried parsing this with strtok like: char *option; char *value; value = strtok(line, " ="); strcpy(option, value); value = strtok(NULL, " ="); where line is the line I am reading from the file, option will contain the left side of the equal (filepath) and value will contain the right side (c:\program files\some value). I know, it's poor coding, but I haven't found something better. sorry... In any case, for those options where there's no space in the right side it works great, but in those containing spaces it only return the string until the 1st space: c:\Program. Is there any other way to do this? Code is appreciated. Jessica

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  • Detecting incorrect key using AES/GCM in JAVA

    - by 4r1y4n
    I'm using AES to encrypt/decrypt some files in GCM mode using BouncyCastle. While I'm proving wrong key for decryption there is no exception. How should I check that the key is incorrect? my code is this: SecretKeySpec incorrectKey = new SecretKeySpec(keyBytes, "AES"); IvParameterSpec ivSpec = new IvParameterSpec(ivBytes); Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding", "BC"); byte[] block = new byte[1048576]; int i; cipher.init(Cipher.DECRYPT_MODE, incorrectKey, ivSpec); BufferedInputStream fis=new BufferedInputStream(new ProgressMonitorInputStream(null,"Decrypting ...",new FileInputStream("file.enc"))); BufferedOutputStream ro=new BufferedOutputStream(new FileOutputStream("file_org")); CipherOutputStream dcOut = new CipherOutputStream(ro, cipher); while ((i = fis.read(block)) != -1) { dcOut.write(block, 0, i); } dcOut.close(); fis.close(); thanks

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  • What is the C# equivalent of java.util.regex?

    - by peter.murray.rust
    I am converting Java code to C# and need to replace the use of Java's regex. A typical use is import java.util.regex.Matcher; import java.util.regex.Pattern; //... String myString = "B12"; Pattern pattern = Pattern.compile("[A-Za-z](\\d+)"); Matcher matcher = Pattern.matcher(myString); String serial = (matcher.matches()) ? matcher.group(1) : null; which should extract a capture group from a matched target string. I'd be grateful for simple examples. EDIT: I have now added the C# equivalent of the code as an answer. EDIT: Here is a tutorial on the use of the actual expressions. EDIT: Here is a useful comparison of C# and Java (and Perl.)

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  • Unable to retrieve data from SQLite database iOS6.0

    - by kunalg
    When i run build ios5.0 or less then Sqlite response correct and retrieve data its work fine but when run on ios6.0 i am trying to fetch data from my.sqlite database but it is not executing my if case. It always enters in else condition. What wrong thing i am doing? I am not able to execute my if case i.e. if(sqlite3_prepare_v2(database, sqlQuerry, -1, &querryStatement, NULL)==SQLITE_OK). for reference check this code . NSLog(@"sqlite3_prepare_v2 = %d SQLITE_OK %d ",sqlite3_prepare_v2(sqlite, [strQuery UTF8String], -1, &compiledStatement, nil),SQLITE_OK); if(sqlite3_prepare_v2(sqlite, [strQuery UTF8String], -1, &compiledStatement, nil)==SQLITE_OK) { NSLog(@"sqlite3_step = %d SQLITE_ROW %d ",sqlite3_step(compiledStatement),SQLITE_ROW); while (sqlite3_step(compiledStatement)==SQLITE_ROW) { if(sqlite3_column_text(compiledStatement, 2) != nil) modelObj.Name = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; } } else { } ////////// in ios6.0 log Print sqlite3_prepare_v2 = 1 SQLITE_OK 0 sqlite3_step = 21 SQLITE_ROW 100 in iOS5.0 log Print sqlite3_prepare_v2 = 0 SQLITE_OK 0 sqlite3_step = 100 SQLITE_ROW 100

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  • What is the proper way to resolve this Eclipse warning?

    - by Morinar
    I'm trying to clean up some warnings in some old Java code (in Eclipse), and I'm unsure what the proper thing to do is in this case. The block looks more or less like this: java.util.List clipboardFileList = null; if( content.isDataFlavorSupported( DataFlavor.javaFileListFlavor ) ) { try { clipboardFileList = (java.util.List)content.getTransferData( DataFlavor.javaFileListFlavor); } /* Do other crap, etc. */ } The List generates a warning as it isn't parameterized, however, if I parameterize it with <File>, which I'm pretty sure is what it requires, it complains that it can't convert from Object to List<File>. I could merely suppress the unchecked warning for the function, but would prefer to avoid that if there is a "good" solution. Thoughts?

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  • validate dynamically added textbox

    - by Hulk
    In the below code how to validate for null values for only the dynamically added text box i.e,r_score1,r_score2......... <script> function validate() { //How to validate the r_Score.. textfields } $(document).ready(function() { for(var i=0;i< sen.length;i++) { row += '<input type="text" name="r_score'+i+'" id="r_score'+r_count+'" size="8" />'; } $('#details').append(row); }); </script> <div id="details"><input type="text" name="score' id="score" size="8" /></div> <input type="button" value="Save" id="print" onclick="javascript:validate();" />

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  • Google Chrome + Ajax

    - by teehoo
    Im writing an ajax web app that uses Comet/Long Polling to keep the webpage up to date, and I noticed in Chrome, it treats the page as if its always loading (icon for the tab keeps spinning). I thought this was normal for Google Chrome + Ajax because even Google Wave had this behaviour. Well today I noticed that Google Wave no longer keeps the loading icon spinning, anyone know how they fixed this? Here's my ajax call code var xmlHttpReq = false; // Mozilla/Safari if (window.XMLHttpRequest) { xmlHttpReq = new XMLHttpRequest(); } // IE else if (window.ActiveXObject) { xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP"); } xmlHttpReq.open('GET', myURL, true); xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); xmlHttpReq.onreadystatechange = function() { if (xmlHttpReq.readyState == 4) { updatePage(xmlHttpReq.responseText); } } xmlHttpReq.send(null);

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  • Unobtrusive Client Validation without accepting model

    - by user1010609
    I have simple form like this which accepts only two values string action and editText.Is there a way to enable Unobtrusive Client Validation on this without Data Annotations? Or do I have to accept model and use Data Annotations? I just need it to make sure editText is atleast 5 chars long. @using (Ajax.BeginForm("Action", "Controller", null, new AjaxOptions { OnFailure = "error", UpdateTargetId = "Pcedit" + @Model.ID})) { <textarea rows="3" cols="2" name="editText" style="width:100%;"></textarea> <br /> <input type="submit" name="action" value="Save"/> <input type="submit" name="action" value="Cancel"/> }

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  • java reading numbers, interpreting as octal, want interpreted as string

    - by user331401
    hello, i am having an issue, where java is reading an array list from a YAML file of numbers, or strings, and it is interpreting the numbers as octal if it has a leading 0, and no 8-9 digit. is there a way to force java to read the yaml field as a string? code: ArrayList recordrarray = (ArrayList) sect.get("recordnum"); if (recordrarray != null) { recno = join (recordrarray, " "); } HAVE ALSO TRIED: Iterator<String> iter = recordrarray.iterator(); if (iter.hasNext()) recno = " " +String.valueOf(iter.next()); System.out.println(" this recnum:" + recno); while (iter.hasNext()){ recno += ""+String.valueOf(iter.next())); System.out.println(" done recnum:" + String.valueOf(iter.next())); } the input is such: 061456 changes to 25390 061506 changes to 25414 061559 - FINE it took a while to figure out what it was doing, and apparently this is a common issue for java, ideas? thanks

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  • DataTemplate defautl visibility for ContentControls

    - by bitbonk
    In my MVVM based WPF application I have a lot of different ViewModel types that dynamically loaded into ContentControls or ContentPresenters. Therefor I need to explictly set what DataTemplate is to be used in XAML: <ContentControl Content={Binding SomePropertyOfTypeViewModel} ContentTemplate={StaticResource someTemplate} /> Now my problem is that the content control is displaying the UI of someTemplate even if the ContentControl is bound to nothing (i.e ViewModel.SomePropertyOfTypeViewModel is null) Is there a quick and easy way to make all ContentControls display nothing if they are currently bound to nothing? When I use implicit DataTemplates everything works as expected. Unfortunately I can't use this mechanism here.

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  • std::string == operator not working

    - by Paul
    Hello, I've been using std::string's == operator for years on windows and linux. Now I am compiling one of my libraries on linux, it uses == heavily. On linux the following function fails, because the == returns false even when the strings are equal (case sensitive wise equal) const Data* DataBase::getDataByName( const std::string& name ) const { for ( unsigned int i = 0 ; i < m_dataList.getNum() ; i++ ) { if ( m_dataList.get(i)->getName() == name ) { return m_dataList.get(i); } } return NULL; } The getName() method is declared as follows virtual const std::string& getName() const; I am building with gcc 4.4.1 and libstdc++44-4.4.1. Any ideas? it looks perfectly valid to me. Paul

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  • I need a groovy criteria to get all the elements after i make sort on nullable inner object

    - by user1773876
    I have two domain classes named IpPatient,Ward as shown below. class IpPatient { String ipRegNo Ward ward static constraints = { ward nullable:true ipRegNo nullable:false } } class Ward { String name; static constraints = { name nullable:true } } now i would like to create criteria like def criteria=IpPatient.createCriteria() return criteria.list(max:max , offset:offset) { order("ward.name","asc") createAlias('ward', 'ward', CriteriaSpecification.LEFT_JOIN) } At present IpPatient table has 13 records, where 8 records of IpPatient doesn't have ward because ward can be null. when i sort with wardName i am getting 5 records those contain ward. I need a criteria to get all the elements after i make sort on nullable inner object.

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  • parentNode.parentNode.rowindex to delete a row in a dynamic table

    - by billy85
    I am creating my rows dynamically when the user clicks on "Ajouter". <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script> function getXhr(){ var xhr = null; if(window.XMLHttpRequest) // Firefox and others xhr = new XMLHttpRequest(); else if(window.ActiveXObject){ // Internet Explorer try { xhr = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xhr = new ActiveXObject("Microsoft.XMLHTTP"); } } else { // XMLHttpRequest not supported by your browser alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); xhr = false; } return xhr } /** * method called when the user clicks on the button */ function go(){ var xhr = getXhr() // We defined what we gonna do with the response xhr.onreadystatechange = function(){ // We do somthing once the server's response is OK if(xhr.readyState == 4 && xhr.status == 200){ //alert(xhr.responseText); var body = document.getElementsByTagName("body")[0]; // Retrieve <table> ID and create a <tbody> element var tbl = document.getElementById("table"); var tblBody = document.createElement("tbody"); var row = document.createElement("tr"); // Create <td> elements and a text node, make the text // node the contents of the <td>, and put the <td> at // the end of the table row var cell_1 = document.createElement("td"); var cell_2 = document.createElement("td"); var cell_3 = document.createElement("td"); var cell_4 = document.createElement("td"); // Create the first cell which is a text zone var cell1=document.createElement("input"); cell1.type="text"; cell1.name="fname"; cell1.size="20"; cell1.maxlength="50"; cell_1.appendChild(cell1); // Create the second cell which is a text area var cell2=document.createElement("textarea"); cell2.name="fdescription"; cell2.rows="2"; cell2.cols="30"; cell_2.appendChild(cell2); var cell3 = document.createElement("div"); cell3.innerHTML=xhr.responseText; cell_3.appendChild(cell3); // Create the fourth cell which is a href var cell4 = document.createElement("a"); cell4.appendChild(document.createTextNode("[Delete]")); cell4.setAttribute("href","javascrit:deleteRow();"); cell_4.appendChild(cell4); // add cells to the row row.appendChild(cell_1); row.appendChild(cell_2); row.appendChild(cell_3); row.appendChild(cell_4); // add the row to the end of the table body tblBody.appendChild(row); // put the <tbody> in the <table> tbl.appendChild(tblBody); // appends <table> into <body> body.appendChild(tbl); // sets the border attribute of tbl to 2; tbl.setAttribute("border", "1"); } } xhr.open("GET","fstatus.php",true); xhr.send(null); } </head> <body > <h1> Create an Item </h1> <form method="post"> <table align="center" border = "2" cellspacing ="0" cellpadding="3" id="table"> <tr><td><b>Functionality Name:</b></td> <td><b>Description:</b></td> <td><b>Status:</b></td> <td><input type="button" Name= "Ajouter" Value="Ajouter" onclick="go()"></td></tr> </table> </form> </body> </html> Now, I would like to use the href [Delete] to delete one particular row. I wrote this: <script type="text/javascript"> function deleteRow(r){ var i=r.parentNode.parentNode.rowIndex; document.getElementById('table').deleteRow(i); } </script> When I change the first code like this: cell4.setAttribute("href","javascrit:deleteRow(this);"); I got an error: The page cannot be displayed. I am redirected to a new pagewhich can not be displayed. How could I delete my row by using the function deleteRow(r)? table is the id of my table Thanks. Billy85

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