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  • Read only particular fields from CSV File in vb.net

    - by fireBand
    Hi, I have this code to read a CVS file. It reads each line, devides each line by delimiter ',' and stored the field values in array 'strline()' . How do I extract only required fields from the CSV file? For example if I have a CSV File like Type,Group,No,Sequence No,Row No,Date (newline) 0,Admin,3,345678,1,26052010 (newline) 1,Staff,5,78654,3,26052010 I Need only the value of columns Group,Sequence No and date. Thanks in advance for any ideas. Dim myStream As StreamReader = Nothing ' Hold the Parsed Data Dim strlines() As String Dim strline() As String Try myStream = File.OpenText(OpenFile.FileName) If (myStream IsNot Nothing) Then ' Hold the amount of lines already read in a 'counter-variable' Dim placeholder As Integer = 0 strlines = myStream.ReadToEnd().Split(Environment.NewLine) Do While strlines.Length <> -1 ' Is -1 when no data exists on the next line of the CSV file strline = strlines(placeholder).Split(",") placeholder += 1 Loop End If Catch ex As Exception LogErrorException(ex) Finally If (myStream IsNot Nothing) Then myStream.Close() End If End Try

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  • Getting parameter sent via html form and saving in my db

    - by Wesley
    I have error in my code i don't know to solve it please help me: My Servlet: package br.com.cad.servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.Date; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import br.com.cad.dao.Cadastro; import br.com.cad.basica.Contato; public class AddDados extends HttpServlet{ protected void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { PrintWriter out = response.getWriter(); String nome = request.getParameter("nome"); String sobrenome = request.getParameter("sobrenome"); String rg = request.getParameter("rg"); String cpf = request.getParameter("cpf"); String sexo = request.getParameter("sexo"); StringBuilder finalDate = new StringBuilder("DataNascimento1") .append("/"+request.getParameter("DataNascimento??2")) .append("/"+request.getParameter("DataNascimento3")); try { SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy"); finalDate.toString(); } catch(ParseException e) { out.println("Erro de conversão da data"); return; } Contato contato = new Contato(); contato.setNome(nome); contato.setSobrenome(sobrenome); contato.setRg(rg); contato.setCpf(cpf); contato.setSexo(sexo); if ("Masculino".equals(contato.getSexo())) { contato.setSexo("M"); } else { contato.setSexo("F"); } contato.setDataNascimento1(dataNascimento1); //error here ????? contato.setDataNascimento2(dataNascimento2); //error here ????? contato.setDataNascimento3(dataNascimento3); //error here ????? Cadastro dao = new Cadastro(); dao.adiciona(contato); out.println("<html>"); out.println("<body>"); out.println("Contato " + contato.getNome() + " adicionado com sucesso"); out.println("</body>"); out.println("</html>"); } } My object dao package br.com.cad.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException; import java.sql.Date; import br.com.cad.dao.ConnectDb; import br.com.cad.basica.Contato; public class Cadastro { private Connection connection; public Cadastro() { this.connection = new ConnectDb().getConnection(); } public void adiciona(Contato contato) { String sql = "INSERT INTO dados_cadastro(pf_nome, pf_ultimonome, pf_rg, pf_cpf, pf_sexo,pf_dt_nasc) VALUES(?,?,?,?,?,?,?,?)"; try { PreparedStatement stmt = connection.prepareStatement(sql); stmt.setString(1, contato.getNome()); stmt.setString(2, contato.getSobrenome()); stmt.setString(3, contato.getRg()); stmt.setString(4, contato.getCpf()); stmt.setString(5, contato.getSexo()); stmt.setDate(6, new Date( contato.getDataNascimento1().getTimeInMillis()) ); // i think there are error here i don't know to solve it ????? stmt.execute(); stmt.close(); System.out.println("Cadastro realizado com sucesso!."); } catch(SQLException sqlException) { throw new RuntimeException(sqlException); } } } My class cadastro package br.com.cad.basica; import java.util.Calendar; public class Contato { private Long id; private String nome; private String sobrenome; private String email; private String endereco; private Calendar dataNascimento1; private Calendar dataNascimento2; private Calendar dataNascimento3; private String rg; private String cpf; private String sexo; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getNome() { return nome; } public void setNome(String nome) { this.nome = nome; } ...getters and setters I need to saving data in my mysql db, but i have some doubt about this code main how to get parameter send form html combobox( 1 for day, 2 for month, 3 for year of birth) i concatened with StringBuilder finalDate ... so i have some problem in my code please help me!!!

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  • how to detect an escape sequence in a string

    - by mix
    Given a string named line whose raw version has this value: \rRAWSTRING how can I detect if it has the escape character \r? What I've tried is: if repr(line).startswith('\r'): blah... but it doesn't catch it. I also tried find, such as: if repr(line).find('\r') != -1: blah doesn't work either. What am I missing? thx! EDIT: thanks for all the replies and the corrections re terminolgy and sorry for the confusion. OK, if i do this print repr(line) then what it prints is: '\rSET ENABLE ACK\n' (including the single quotes). i have tried all the suggestions, including: line.startswith(r'\r') line.startswith('\\r') each of which returns False. also tried: line.find(r'\r') line.find('\\r') each of which returns -1

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  • jQuery Ajax works in Firefox, fails in IE when calling Controller action

    - by myaesubi
    Hello there, I'm making the following jQuery ajax call to an action in ASP.NET MVC. In Firefox the async request is sent to the action in the controller and everything works fine, but in IE no request is sent to the controller. Here is the ajax call and action controller signature: $.ajax({ cache: false, type: "GET", dataType: "json", contentType: "application/json; charset=utf-8", url: "/Fmz/AssignFmzToRegion", data: { fmzId: 403, regionId: 409 }, success: function(message) { if (message != 'Success') alert(message); }, failure: function(message) { alert(message); } }); [HttpGet] public JsonResult AssignFmzToRegion(long fmzId, long regionId) { try { FacilityManagementZoneService.AssignFmzToRegion(fmzId, regionId); } catch (Exception e) { return this.Json(e.Message, JsonRequestBehavior.AllowGet); } return this.Json("Success", JsonRequestBehavior.AllowGet); } Thanks.

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  • How to ignore comments when reading a XML file into a XmlDocument?

    - by tunnuz
    Possible duplicate: How to remove all comment tags from XmlDocument Hello, I am trying to read a XML document with C#, I am doing it this way: XmlDocument myData = new XmlDocument(); myData.Load("datafile.xml"); anyway, I sometimes get comments when reading XmlNode.ChildNodes. For the benefit of who's experiencing the same requirement, here's how I did it at the end: /** Validate a file, return a XmlDocument, exclude comments */ private XmlDocument LoadAndValidate( String fileName ) { // Create XML reader settings XmlReaderSettings settings = new XmlReaderSettings(); settings.IgnoreComments = true; // Exclude comments settings.ProhibitDtd = false; settings.ValidationType = ValidationType.DTD; // Validation // Create reader based on settings XmlReader reader = XmlReader.Create(fileName, settings); try { // Will throw exception if document is invalid XmlDocument document = new XmlDocument(); document.Load(reader); return document; } catch (XmlSchemaException) { return null; } } Thank you Tommaso

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  • scheduled task or windows service

    - by czuroski
    Hello, I have to create an app that will read in some info from a db, process the data, write changes back to the db, and then send an email with these changes to some users or groups. I will be writing this in c#, and this process must be run once a week at a particular time. This will be running on a Windows 2008 Server. In the past, I would always go the route of creating a windows service with a timer and setting the time/day for it to be run in the app.config file so that it can be changed and only have to be restarted to catch the update. Recently, though, I have seen blog posts and such that recommend writing a console application and then using a scheduled task to execute it. I have read many posts talking to this very issue, but have not seen a definitive answer about which process is better. What do any of you think? Thanks for any thoughts.

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  • VB.NET 2.0 - StackOverflowException when using Thread Safe calls to Windows Forms Controls

    - by LamdaComplex
    I have a Windows Forms app that, unfortunately, must make calls to controls from a second thread. I've been using the thread-safe pattern described on the http://msdn.microsoft.com/en-us/library/ms171728.aspx. Which has worked great in the past. The specific problem I am having now: I have a WebBrowser control and I'm attempting to invoke the WebBrowser.Navigate() method using this Thread-Safe pattern and as a result I am getting StackOverflow exceptions. Here is the Thread-Safe Navigate method I've written. Private Delegate Sub NavigateControlCallback(ByRef wb As WebBrowser, ByVal url As String) Private Sub AsyncNavigate(ByRef wb As WebBrowser, ByVal URL As String) Try If wb.InvokeRequired Then Dim callback As New NavigateControlCallback(AddressOf AsyncNavigate) callback(wb, url) Else wb.Navigate(url) End If Catch ex As Exception End Try End Sub Is there a Thread-Safe way to interact with WinForms components without the side effect of these StackOverflowExceptions?

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  • Empty text view message when listview is empty

    - by Blid Tounsi
    I have a ListView with an empty list catch in the XML and it works fine. How to toggle ListView Empty Text please ? This is my XML code : <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:id="@+id/empty" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/emptyList" /> <ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> I'm not using a ListActivity. It s possible to do that please ?

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  • FB Connect: (417) Expectation failed

    - by FearUs
    Hi, I developed a simple ASP.NET app, it was working fine, but now I can't get user info; I am getting this message: The remote server returned an error: (417) Expectation failed. and here's the code I'm using: Dim FBUser As Facebook.Schema.user = Nothing Dim connectSession As Facebook.Session.ConnectSession Dim FBApi As Api connectSession = New Facebook.Session.ConnectSession(ConfigurationManager.AppSettings("AppKey"), ConfigurationManager.AppSettings("AppSecret")) If connectSession.IsConnected() Then FBApi = New Api(connectSession) Try FBUser = FBApi.Users.GetInfo() '' do some work Catch ex As Exception FBUser = Nothing '' other work End Try This is really confusing, because it was just working fine for 2 weeks now !! Thanks

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  • Can mod_rewrite do math?

    - by ewall
    I am planning to convert my website to a new CMS, but I would like to use mod_rewrite to seamlessly redirect old links to their new locations. The catch is that my new blog will not have the same article numbers as the old, because I'll import some older blog entries in their first. Thus, my mod_rewrite would need to take a URL like old.php?article=125, do the addition to figure out the new article number (say +200, for this example), and redirect to new.php?i=325. Can mod_rewrite do the addition on its own, or am I going to need some kind of 'helper' script to do that?

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  • Ruby Methods: how to return an usage string when insufficient arguments are given

    - by Shyam
    Hi, After I have created a serious bunch of classes (with initialize methods), I am loading these into IRb to test each of them. I do so by creating simple instances and calling their methods to learn their behavior. However sometimes I don't remember exactly what order I was supposed to give the arguments when I call the .new method on the class. It requires me to look back at the code. However, I think it should be easy enough to return a usage message, instead of seeing: ArgumentError: wrong number of arguments (0 for 9) So I prefer to return a string with the human readable arguments, by example using "puts" or just a return of a string. Now I have seen the rescue keyword inside begin-end code, but I wonder how I could catch the ArgumentError when the initialize method is called. Thank you for your answers, feedback and comments!

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  • C# Desktop Application "Encounters an error and has to exit" on first run of the day

    - by Sreedevi J
    Hello, It seems I tend to attract strange issues. This time, I have written a C# application, and handled most of the exceptions I can find. The problem is, when I run the installed/bundled version on any PC for the first time in a day (after the PC has been shut down and started after a while) it comes across some error and has to shutdown the application (even though the try-catch block surrounding the Main() does not fire). The application does not throw the same error on subsequent runs. I added an #if(!DEBUG) ... #else ... #endif surrounding the Main() code. Can anyone help me? Thanks!

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  • Exceptions and Access Violations in Paint events in Windows

    - by Patrick
    After executing some new code, my C++ application started to behave strange (incorrect or incomplete screen updates, sometimes no screen updates at all). After a while we found out that the new code is causing an Access Violation. Strange enough, the application simply keeps on running (but with the incorrect screen updates). At first we thought the problem was caused by a "try-catch(...)" construction (put there by an overactive ex-colleague), but several hours later (carefully inspecting the call stacks, adding many breakpoints, ...) we found out that if there's an Access Violation in a paint event, Windows catches it, and simply continues running the application. Is this normal behavior? Is it normal that Windows catches exceptions/errors during a paint event? Is there a way to disable this? (if not, it would mean that we have to always run in the debugger with all exceptions enabled while testing our code). Patrick

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  • help convert pop3 connection to imap

    - by MyHeadHurts
    tcpClient.Connect(hostName, 110) Dim networkStream As NetworkStream = tcpClient.GetStream() Dim bytes(tcpClient.ReceiveBufferSize) As Byte Dim sendBytes As Byte() networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("User " + userName + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("Pass " + userPassword + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("STAT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) sTemp = networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) sendBytes = Encoding.ASCII.GetBytes("RETR " + messageNumber + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize)) returnMessage = Encoding.ASCII.GetString(bytes) EmailContent.Text = returnMessage sendBytes = Encoding.ASCII.GetBytes("QUIT" + vbCrLf) networkStream.Write(sendBytes, 0, sendBytes.Length) tcpClient.Close() Catch ex As Exception EmailContent.Text = "Could not retrieve email or your inbox is empty" End Try

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  • OutOfMemoryError calling XmlSerializer.Deserialize() - not related to XML size!

    - by Mike Atlas
    This is a really crazy bug. The following is throwing an OutOfMemoryException, for XML snippits that are very short (e.g., <ABC def='123'/>) of one type, but not for others of the same size but a different type: (e.g., <ZYX qpr='baz'/>). public static T DeserializeXmlNode<T>(XmlNode node) { try { return (T)new XmlSerializer(typeof(T)) .Deserialize(new XmlNodeReader(node)); } catch (Exception ex) { throw; // just for catching a breakpoint. } } I read in this MSDN article that if I were using XmlSerializer with additional parameters in the constructor, I'd end up generating un-cached serializer assemblies every it got called, causing an Assembly Leak. But I'm not using additional parameters in the constructor. It also happens on the first call, too, so the AppDomain is fresh. Worse yet, it is only thrown in release builds, not debug builds. What gives?

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  • jQuery ajax inside a loop problem

    - by steamboy
    Hello, This js loop script always get the last value of ui_item inside a jquery ajax funciton. How can a catch the correct value of each iteration? for (var i = 0; i <= split_files_cb_value_holder.length - 1; i++){ var split_values = split_files_cb_value_holder[i].split(':'); ui_item = split_files_cb_value_holder[i]; $.ajax({ type: "POST", url: "ds/index.php/playlist/check_folder", data: "component_type="+$('#component_type').val()+"&value="+split_values[1], success: function(msg) { console.log(ui_item); //ALWAYS GETS THE LAST VALUE }, error: function() { alert("An error occured while updating. Try again in a while"); } }); } Thanks!

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  • Operation is not valid due to the current state of the object

    - by DBa
    Sometimes, when running a Mono .NET application (it seems to not depend on the input data, as it does not change), I run into following situation: when trying to Dequeue an element from a (non-empty, I check its Count beforehand) Queue, an exception is thrown: Unhandled Exception: System.InvalidOperationException: Operation is not valid due to the current state of the object at System.Collections.Generic.Queue1[DBWorkItem].Peek ()[0x00000] at System.Collections.Generic.Queue1[DBWorkItem].Dequeue () [0x00000] at DBProcessor.process (System.Object q) [0x0006b] in <... Though I can certainly catch this exception, the element is dequeued and lost. Has anyone else encountered this behavior, too?

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  • SQL - Counting sets of Field-B values for each Field-A value

    - by potrnd
    Hello, First of all sorry that I could not think of a more descriptive title. What I want to do is the following using only SQL: I have some lists of strings, list1, list2 and list3. I have a dataset that contains two interesting columns, A and B. Column A contains a TransactionID and column B contains an ItemID. Naturally, there can be multiple rows that share the same TransactionIDs. I need to catch those transactions that have at least one ItemID in each and every list (list1 AND list2 AND list3). I also need to count how many times does that happen for each transaction. [EDIT] That is, count how many full sets of ItemIDs there are for each TransactionID", "Full Set" being any element of the list1 with any element of the list2 with any element of the list3 I hope that makes enough sense, perhaps I will be able to explain it better with a clear head. Thanks in advance

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  • C#: Check if administrator has write access to a file

    - by Bilal Aslam
    The Problem: I need to check if a user (local user or domain user, either one is possible) has write access to a file (if you're curious, %windir%\system32\inetsrv\applicationHost.config. This file is protected by Windows and you need to be an administrator to write to it.) My Solution: The general construct is: using (Impersonator impersonator = new Impersonator(domain, username, password)) { try { using (FileStream fs = File.OpenWrite(appHostConfigPath)) { return true; } catch { return false; } } As you can imagine, the Impersonator class is an IDisposible which uses native interop to call LogonUser. Nothing too creative, and it works. Where I am stuck: On Windows OSs with UAC enabled, this function always return false even if the user specified by username is an administrator. Even though my program is running elevated as an administrator, I suspect what's happening is that the impersonated code is running as a limited administrator. Hence, the method is returning false. I don't have any creative solutions to this. Can anyone help?

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  • Issue with maxWorkerThreads and thread count

    - by Kartik M
    I have created an ASP.NET application which creates threads in an infinite loop. I set maxWorkerThreads to 20 in processModel in machine.config. When I checked the Thread count in perfmon there was around 7000 threads created in worker process. In PageLoad() I have: using System.Threading; ... int count = 0; var threadList = new System.Collections.Generic.List<System.Threading.Thread>(); try { while (true) { Thread newThread = new Thread(ThreadStart(DummyCall), 1024); newThread.Start(); threadList.Add(newThread); count++; } } catch (Exception ex) { Response.Write(count + " : " + ex.ToString()); } Function: void DummyCall() { System.Threading.Thread.Sleep(1000000000); } How do I restrict thread creation in ASP.NET with IIS6/7?

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  • Android bluetooth socket error

    - by ashwini
    I am using backport bluetooth api on android 1.6. I am using Google Bluetooth Chat sample app for testing. The app works fine in normal scenarios. In a scenario, when I try to connect to paired device which is in off state, I get following error. 01-04 09:00:11.629: ERROR/BluetoothEventLoop.cpp(84): onGetRemoteServiceChannelResult: D-Bus error: org.bluez.Error.ConnectionAttemptFailed (Host is down) 01-04 09:00:11.729: DEBUG/dalvikvm(128): GC freed 4535 objects / 256008 bytes in 296ms 01-04 09:00:21.880: ERROR/bluetooth_RfcommSocket.cpp(1433): connect error: Host is down (112) But it sets the state as connected. The app is unable to catch the exception. Why does it happen? Or is it the case with backport api? Any help is appreciated as I am struggling a lot to get things run fine.

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  • Mysql: ROLLBACK for multiple queries

    - by Raj
    Hi I have more than three MySql queiries in a PHP script triggered by scheduled task. If a query catch an error, script throw an exception and rollback that Mysql query. It works fine. However if first query works fine, but not 2nd query, throw an exception, it rollback 2nd one but not 1st query. I am using begin_trans(), commit and rollback() for individual queries because Sometimes i need to rollback one query, sometimes all queries. Is there any way to rollback one query or all queries? Thanks in advance UPDATE: I got it working, there was no problem with in begin_trans(), commit and rollback(), the database connection config was different for one query from other queries, crazy code without any comments!!!

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  • QT clicked signal dosnt work on QStandardItemModel with tree view

    - by user63898
    Hello i have this code in QT and all i want to to catch the clicked event when some one clicking in one of the treeview rows without success here is my code: (parant is the qMmainwindow) m_model = new QStandardItemModel(0, 5, parent); // then later in the code i have proxyModel = new QSortFilterProxyModel; proxyModel->setDynamicSortFilter(true); setSourceModel(createMailModel(parent)); ui.treeView->setModel(proxyModel); ui.treeView->setSortingEnabled(true); ui.treeView->sortByColumn(4, Qt::DescendingOrder); // and my signal/slot looks like this but its not working //and im not getting eny clicked event fired connect(ui.treeView,SIGNAL(Clicked(const QModelIndex& ) ), this,SLOT( treeViewSelectedRow(const QModelIndex& ) ) ); also how can i debug QT signal/slots so i can see some debug massages printing when something is wrong ?

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  • EntityFramework .net 4 Update entity with a simple method

    - by Dennis Larsen
    I was looking at this SO question: http://stackoverflow.com/questions/1168215/ado-net-entity-framework-update-only-certian-properties-on-a-detached-entity. This was a big help for me. I know now that I need to attach an entity before making my changes to it. But how can do I do this: I have an MVC website, a Customer Update Page with fields: ID, Name, Address, etc. My MVC is parsing this into a Customer entity. How do I do the following: Update my entity and Save the changes to it. Catch the exception if my changes have been made since I loaded my entity.

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  • Lowering document.domain

    - by Sergej Andrejev
    What am I doing wrong? According to specs lowering domain with javacript should be possible in IE8 and IE7 but my code only wors in FF and throws Argument Exception in IE <html xmlns="http://www.w3.org/1999/xhtml" > <body onload="alert(document.domain); try { document.domain = 'if.se' } catch(e) { alert(e); }; alert(document.domain);"> </body> </html>

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