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• Reading string value from Excel with HSSF but it's double

  - by egaga

  Hi, I'm using HSSF-POI for reading excel data. The problem is I have values in a cell that look like a number but really are strings. If I look at the format cell in Excel, it says the type is "text". Still the HSSF Cell thinks it's numeric. How can I get the value as a string? If I try to use cell.getRichStringValue, I get exception; if cell.toString, it's not the exact same value as in Excel sheet. Thanks! edit: until this gets resolved, I'll use new BigDecimal(cell.getNumericCellValue()).toString()

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• WCF - WebReferences not working

  - by JMSA

  At the client end, I have generated a Proxy using SvcUtil.exe and it is working fine. Then I have added a WebReference to the client assembly and calling the same method. But it is not working. My program is running in console mode and the method is suppose to return a string. It is not returning the string. I just see a blank console window. No exception is thrown. And after setting a debug point on the method call I see that, program is halted on the method call for ever. What should I look for to solve the problem? I am using VS2005. And adding the webReference by right-clicking the client project and then clicking "Add Web Reference" pop-up menu.

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• Load binary file using fstream

  - by Kirill V. Lyadvinsky

  I'm trying to load binary file using fstream in the following way: #include <iostream #include <fstream #include <iterator #include <vector using namespace std; int main() { basic_fstream<uint32_t file( "somefile.dat", ios::in|ios::binary ); vector<uint32_t buffer; buffer.assign( istream_iterator<uint32_t, uint32_t( file ), istream_iterator<uint32_t, uint32_t() ); cout << buffer.size() << endl; return 0; } But it doesn't work. In Ubuntu it crashed with std::bad_cast exception. In MSVC++ 2008 it just prints 0. I know that I could use file.read to load file, but I want to use iterator and operator>> to load parts of the file. Is that possible? Why the code above doesn't work?

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• Button in gridview

  - by Rajeev

  I'm using a button in a template field of gridview. On button click I want to redirect to another page but it throws an exception: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" % in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. What can I do to resolve this problem?

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• Avoiding improper std::string initialization with NULL const char* using g++

  - by pachanga

  A there any g++ options which can detect improper initialization of std::string with NULL const char*? I was in the process of turning some int fields into std::string ones, i.e: struct Foo { int id; Foo() : id(0) {} }; ...turned into: struct Foo { std::string id; Foo() : id(0) {} //oooops! }; I completely overlooked bad 'id' initialization with 0 and g++ gave me no warnings at all. This error was detected in the run time(std::string constructor threw an exception) but I'd really like to detect such stuff in the compile time. Is there any way?

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• String to date (Invalid format)

  - by MrThys

  I am using Joda Time library to convert my String dates to a real date, because this seemed like the easiest solution to do this. I am using the DateTime object to do this; new DateTime(strValue); But when inserting some formats it throws me the exception; java.lang.IllegalArgumentException: Invalid format: "Mon, 30 Sep 2002 01:56:02 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 19:59:01 GMT" java.lang.IllegalArgumentException: Invalid format: "Mon, 30 Sep 2002 01:52:02 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 17:05:20 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 19:09:28 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 15:01:02 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 23:48:33 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 17:24:20 GMT" java.lang.IllegalArgumentException: Invalid format: "Sun, 29 Sep 2002 11:13:10 GMT" Is there a way to solve this, or should I use something else instead of DateTime.

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• How does Read-Only affect a Directory?

  - by ispiro

  I've found that I can write (say, copy a file into) a Read-Only directory. That is, a Directory with ...Attributes = FileAttributes.ReadOnly.I can even change its name. The only thing I've found that can't be done is to delete it. Is that really the only thing that ReadOnly prevents? EDIT: Here's the code: (The Directory is empty.) (new DirectoryInfo(path)).Attributes = FileAttributes.ReadOnly; Directory.Delete(path); It throws an Access to the path 'c:\... is denied. exception. But after changing ReadOnly to Normal it works fine. So what does a ReadOnly prevent, and what doesn't it prevent?

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• Is there a way of using one method to handle others to avoid code duplication?

  - by Artur

  I wonder if there is a way of writing a method or a class that would add to any method some code that is shared between many methods. The methods return different things and some of them are just void. Below is a part of the code that is duplicated in the methods. StartTimer(MethodBase.GetCurrentMethod().Name); try { // Actual method body } catch (Exception ex) { bool rethrow = ExceptionPolicy.HandleException(ex, "DALPolicy"); if (rethrow) { throw; } } finally { StopTimer(MethodBase.GetCurrentMethod().Name); } Any help would be greatly appreciated.

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• Use default credentials in order to call DirectoryEntry

  - by Copeleto

  Hi, I am working in a Login page and teh logic is like - try { DirectoryEntry LDAPLogin = new DirectoryEntry(ConfigurationSettings.AppSettings ["LDAPPath"].ToString(), Usuario, Txt_Contrasenia.Text.ToString()); if (LDAPLogin.NativeGuid != LDAPLogin.Name) ValidarGrupo(); } catch (Exception exc) { Label_Info.Text = "Sus credenciales no son validas: " + Usuario.ToString() + " " + exc.Message; } If the user enters the rights credentials I call a method ValidarGrupo that implements a lookup in the AD for a group of the user I would like to replace the username and password with UseDefaultCredentials in order to avoid that the user has to enter the username and password and the Login pages use the credentials of the user that is login on the machine.

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• Is .net 4.0 really not capable of sending emails with attachments larger than 3MB's

  - by JL

  I recently had an issue after upgrading my .net framework to 4.0 from 3.5, I did this because in 4.0 the SMTPClient finally sends a QUIT command to the SMTP server. However recently I was most disturbed to run into a base64 decoding issue, when sending out emails with attachments larger than 3MB's using .net v4 smtpclient: System.Net.Mail.SmtpException: Failure sending mail. --- System.IndexOutOfRangeException: Index was outside the bounds of the array. at System.Net.Base64Stream.EncodeBytes(Byte[] buffer, Int32 offset, Int32 count, Boolean dontDeferFinalBytes, Boolean shouldAppendSpaceToCRLF) at System.Net.Base64Stream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mime.MimePart.Send(BaseWriter writer) at System.Net.Mime.MimeMultiPart.Send(BaseWriter writer) at System.Net.Mail.Message.Send(BaseWriter writer, Boolean sendEnvelope) at System.Net.Mail.SmtpClient.Send(MailMessage message) --- End of inner exception stack trace --- I read this connect bug listing here: http://connect.microsoft.com/VisualStudio/feedback/details/544562/cannot-send-e-mails-with-large-attachments-system-net-mail-smtpclient-system-net-mail-mailmessage and also this bug listing here: http://connect.microsoft.com/VisualStudio/feedback/details/102644/system-net-mail-fails-to-send-index-was-outside-the-bounds-of-the-array So my question is - is .net 4.0 RTM really not capable of such an easy task as sending a message with an attachment larger than 3MB's?

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• PATH and CLASSPATH in Windows7 7 / Eclipse

  - by Richard Knop

  So I would like to set PATH and CLASSPATH system variables so I can use javac and java commands in the command line. I can just compile and run java programs in eclipse but I would also like to be able to run them through command line. This is where I have Java installed: C:\Program Files (x86)\Java jdk1.6.0_20 jre6 And this is where eclipse stores my Java projects: D:\java-projects HelloWorld bin HelloWorld.class src HelloWorld.java I have set up the PATH and CLASSPATH variables like this: PATH: C:\Program Files (x86)\Java\jdk1.6.0_20\bin CLASSPATH: D:\java-projects But it doesn't work. When I write: java HelloWorld Or: java HelloWorld.class I get error like this: Exception in thread “main” java.lang.NoClassDefFoundError: HelloWorld The error is longer, that's just the first line. How can I fix this? I'm mainly interested to be able to run compiled .class programs from the command line, I can do compiling in the eclipse.

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• How do I choose files from the local filesystem in Windows Phone 7

  - by Kris Erickson

  I'm trying to choose some files to upload in Windows Phone 7 (in the emulator), and any attempt to ShowDialog of the OpenFileDialog leads to a Security Exception. The open file dialog is being called from an event on a button click but I get a SecurityException [FileDialog_ActiveScripting] Arguments: Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=3.0.40806.0&File=System.Windows.dll&Key=FileDialog_ActiveScripting Looking up the SecurityException in the Silverlight version of OpenFileDialog.ShowDialog states that the error is: Active Scripting in Internet Explorer is disabled. -or- The call to the ShowDialog method was not made from user-initiated code. Anyone had any luck with the OpenFileDialog and ShowDialog in Windows Phone 7?

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• Choosing between ExtJS and YUI based on application parameters.

  - by Kabeer

  Hello. I need help in taking call to choose between Ext JS and YUI libraries. Here are the key factors I have derived from my application requirements & development process: Complex, windows forms like controls Widgets, Layouts, Utilities Inter widget communication Easy to extend Easy to learn Intuitive & concise coding Strong exception handling Active support / community To update with upcoming technologies (HTML5, etc.) Skins & Themes to be easy to change Skins & Themes to support variety (a text box for different context to appear differently) Support & Utilities for standard protocols (XmlHttp, JSON) Good performance (responsive) Cost is not crucial, but I don't mind saving :)

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• Castle Windsor - Resolving a generic implementation to a base type

  - by arootbeer

  I'm trying to use Windsor as a factory to provide specification implementations based on subtypes of XAbstractBase (an abstract message base class in my case). I have code like the following: public abstract class XAbstractBase { } public class YImplementation : XAbstractBase { } public class ZImplementation : XAbstractBase { } public interface ISpecification<T> where T : XAbstractBase { bool PredicateLogic(); } public class DefaultSpecificationImplementation : ISpecification<XAbstractBase> { public bool PredicateLogic() { return true; } } public class SpecificSpecificationImplementation : ISpecification<YImplementation> { public bool PredicateLogic() { /*do real work*/ } } My component registration code looks like this: container.Register( AllTypes.FromAssembly(Assembly.GetExecutingAssembly()) .BasedOn(typeof(ISpecification<>)) .WithService.FirstInterface() ) This works fine when I try to resolve ISpecification<YImplementation>; it correctly resolves SpecificSpecificationImplementation. However, when I try to resolve ISpecification<ZImplementation> Windsor throws an exception: "No component for supporting the service ISpecification'1[ZImplementation, AssemblyInfo...] was found" Does Windsor support resolving generic implementations down to base classes if no more specific implementation is registered?

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• IDbTransaction Rollback Timeout

  - by Ben

  I am dealing with an interesting situation where I perform many database updates in a single transaction. If these updates fail for any reason, the transaction is rolled-back. IDbTransaction transaction try { transaction = connection.BeginTransaction(); // do lots of updates (where at least one fails) transaction.Commit(); } catch { transaction.Rollback(); // results in a timeout exception } finally { connection.Dispose(); } I believe the above code is generally considered the standard template for performing database updates within a transaction. The issue I am facing is that whilst transaction.Rollback() is being issued to SQL Server, it is also timing out on the client. Is there anyway of distinguishing between a timeout to issue the rollback command and a timeout on that command executing to completion? Thanks in advance, Ben

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• Watin; Get element by id not working

  - by Afnan

  I am trying to place data into text area that is inside hiden input but watin dose not find it.why? but when i search for inputs my program shows this. var ie = new WatiN.Core.IE("http://facebook.com", true); ie.ClearCookies(); ie.TextField(WatiN.Core.Find.ById("email")).TypeText(textBoxUsername.Text); ie.TextField(WatiN.Core.Find.ById("pass")).TypeText(textBoxPassword.Text); ie.Button(WatiN.Core.Find.ByValue("Login")).Click(); ie.Link(WatiN.Core.Find.ByText("Status")).Click(); ie.TextField(WatiN.Core.Find.ById("u362110_11")).TypeText(textBoxPassword.Text); Exception Could not find INPUT (hidden) or INPUT (password) or INPUT (text) or INPUT (textarea) or TEXTAREA element tag matching criteria: Attribute 'id' equals 'u493403_13' at http://www.facebook.com/home.php

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• Java RegEx Pattern not matching (works in .NET)

  - by CDSO1

  Below is an example that is producing an exception in Java (and not matching the input). Perhaps I misunderstood the JavaDoc, but it looks like it should work. Using the same pattern and input in C# will produce a match. import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static void main(String[] args) { String pattern = "aspx\\?uid=([^']*)"; Pattern p = Pattern.compile(pattern); Matcher m = p.matcher("id='page.aspx?uid=123'"); System.out.println(m.groupCount() > 0 ? m.group(1) : "No Matches"); } }

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• How do i cast A to object to class A when B can typcast to A?

  - by acidzombie24

  Basically i want to do this. ee causes a bad cast exception. NOTE: o can be ANYTHING. It may not be B, it can be C, D, E, F etc. But this should work as long as o is a class that can typecast into A (B is such a class. It uses an implicit operator overload) var b = (B)"sz"; var e = (A)b; object o = b; var ee = (A)o;

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• Why can I not deploy my ear on Glassfish

  - by hexin

  I have standard maven project in netbeans (netbeans' enterprise application), that have 1 war, 1 ejb and 1 ear modules. I want to inject with @Inject my @Stateless from ejb to war (REST class) using its interface. I have added some beans.xml files in correct folders in project, but im still getting this: Error occurred during deployment: Exception while loading the app : WELD-001409 Ambiguous dependencies for type [LogicBean] with qualifiers [@Default] at injection point [[field] @Inject private pl.edu.amu.wmi.kino.rk.rest.ReportRest.bean]. Possible dependencies [[Session bean [class pl.edu.amu.wmi.kino.rk.data.impl.LogicBeanImpl with qualifiers [@Any @Default]; local interfaces are [LogicBean], Session bean [class pl.edu.amu.wmi.kino.rk.data.impl.LogicBeanImpl with qualifiers [@Any @Default]; local interfaces are [LogicBean]]]. Please see server.log for more details. What am i doing wrong? I have searched the whole internet, but could not find the solution. I know it is possible because i worked on a project with such a staff. THX for any help:)

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• Makecert problem under Windows 7

  - by TimK

  I'm creating a certificate to use with an SslStream, and I've been doing it this way under XP: makecert -r -pe -n "CN=aName" -ss my -sr localmachine -sky exchange -sp "Microsoft RSA SChannel Cryptographic Provider" -sy 12 server.cer If I understand this correctly, this creates a certificate in server.cer, and creates a private key for it in my personal certificate store. Once I have done this, I can create a certificate object like this: X509Certificate.CreateFromCertFile(certFile); I then use it with the SSLStream, and everything works fine. Now that I have switched to Windows 7, the private key seems to be disappearing every time I restart the machine. I run a command prompt as Administrator, and execute the same makecert command shown above. This succeeds and the SSL connection works correctly. If I restart the machine, the call to AuthenticateAsServer fails with the exception "The server mode SSL must use a certificate with the associated private key." Why is the private key disappearing? What do I need to do to make it stick around?

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• Debugging with only the .exe

  - by Franklin Albricias

  HI: I've a Delphi 7 program that I wrote many years ago, but I've lost the source code. It's a small program but very useful for me. I've tried to 'install' it again in a new Windows XP computer, just copying the folder with de data (.db paradox files), and configured the BDE connection. When the programm starts I receive an "Unknown exception" and halts. I've no idea why this happens, and can't debug cause the lost source code. I've tried in another computer with the same results. Any suggestions or ideas? What do you do in a situation like this? Thanks in advance.

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• Blackberry ESS standalone mode && Outlook 2007

  - by new Blackberry developer

  Hi, I launch Blackberry ESS in standalone mode. However I don't have Outlook Express on my computer. Instead I have Outlook 2007 on my computer. I set up an email account in Outlook 2007 which uses 'localhost' as its pop3/smtp server. The port numbers I used are the same as those in http://www.blackberryforums.com/developer-forum/5590-sending-receiving-email-device-simulator.html. However I got the following exception. 'UnknownHostException:pop3.server'. I am wondering if Outlook 2007 works with ESS.

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• Socket Bind Error

  - by rantravee

  Hi, I have a test application that opens a socket , sends something through this socket and then closes it . This is done in a loop for 5-10.000 times. The thing is that after 3,4000 iterations I get an error of this type : enter code here java.net.BindException: Address already in use: connect I even set the socket to be used immediattly, but the error persists enter code here try { out_server.write(m.ToByteArray()); socket_server.setReuseAddress(true); socket_server.close(); } catch(Exception e) { e.printStackTrace(); System.out.println(i+" unable to register with the server"); } What could I do to fix this ?

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• Unpacking Argument Lists and Instantiating WTForms objects from web.py

  - by Morris Cornell-Morgan

  After a bit of searching, I've found that it's possible to instantiate a WTForms object in web.py using the following code: form = my_form(**web.input()) web.input() returns a "dictionary-like" web.storage object, but without the double asterisks WTForms will raise an exception: TypeError: formdata should be a multidict-type wrapper that supports the 'getlist' method From the Python documentation I understand that the two asterisks are used to unpack a dictionary of named arguments. That said, I'm still a bit confused about exactly what is going on. What makes the web.storage object returned by web.input() "dictionary-like" enough that it can be unpacked by ** but not "dictionary-like" enough that it can be passed as-is to the WTForms constructor? I know that this is an extremely basic question, but any advice to help a novice programmer would be greatly appreciated!

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• Robust C# Plugin System

  - by Pete Kirkham

  I am writing a tool which communicates with more than one version control system, either subversion or clearcase, and has various utilities which can be plugged into it. I though of using MEF to load the version control providers, and utiilities, both of which have interfaces definied for them. I've started to use MEF for this. But if loading any plugin fails (on half my clients machines, the ClearCase COM bindings won't be present, so loading will fail, on the other half SVN won't be installed, so the SVN plugin won't load) though, MEF throws an exception and no plugin works; I was hoping that the rest of the plugins would load. [ImportMany(AllowRecomposition = true)] public IEnumerable<IVersionControl> RegisteredProviders { get; private set; } Instead, if any providers fail to construct themselves, then RegisteredProviders is null. Is there a simple way of configuring MEF to achieve this (reporting exceptions but loading other instances), or do I have to change the interface to delay their intialisation failure until after MEF has instantiated the objects?

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