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  • Why would an error get thrown inside my try-catch?

    - by George Johnston
    Why would my try-catch block still be throwing an error when it's handled? Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Try Here >> : _MemoryStream.Seek(6 * StartOffset, 0) _MemoryStream.Read(_Buffer, 0, 6) Catch ex As IOException // Handle Error End Try Edit: Cleaned the question up to remove the extraneous information.

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  • Client server architecture question

    - by Shane Fulmer
    I am working on a client server system, and am running into issues where multiple clients are executing an action at the same time. We are able to solve this by locking on the critical section of code, which ensures that the first client will complete the action before the second client enters the code block. My question is this: our server is also clustered, so multiple instances of the server itself can exist, which recreates the same problem as before. How could we solve this problem? Thanks!

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  • How to Keep to GPL Licence When Modifying a Script

    - by MagicAndi
    Hi, In answering my own question, I came across this GreaseMonkey script that automatically converts currency values on a webpage. I would like to modify the script for my specific case, and I want to know how I should modify the script MetaData block to acknowledge the script's original author and respect the (letter and spirit of the) GPL. Can anyone advise? Thanks, MagicAndi

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  • How can I use my cell phone to establish a dial-up networking connection?

    - by gWiz
    I am using Windows 7 and have a BlackBerry with T-Mobile (U.S.). I have paired the phone with my computer over Bluetooth, which automatically creates a serial port for it. I am able to open the port in PuTTY and successfully issue AT commands to the modem, including dialing. However, while using Windows to create and establish a Dial-Up Networking connection, I get an error dialog stating "Error 678. The remote computer did not respond." In my testing, I also tried setting up a connection to dial a number connected to a phone. When attempting to connect over this connection, the phone does ring but the very moment I answer the call, my computer displays the above error dialog. What must be done to successfully establish such a PPP connection? Some special AT initialization string perhaps? To clarify, I'm not referring to the well-described and popular technique known as "tethering," in which the remote host of the data link is the mobile service provider. I am interested specifically in establishing direct data links with remote hosts other than my mobile service provider. Think old-school landline connection to your friend's computer or BBS. Edit 1 As grawity pointed out in comments, the missing piece of the puzzle is the actual modulator that is compatible with v-series protocols, which I expected to be built into the cellphone. So far the best only software alternative I could find is this experimental project. Edit 2 Found this forum discussion today. The participants state that there is no old-school modem in the BlackBerry. Edit 3 When I place a call in PuTTY with ATD, immediately after the call is answered (and the callee is initiating the handshake) the cellphone returns OK. This is not the expected behavior for establishing a data connection. The phone should reciprocate the handshake, and upon success return CONNECT. (Alternatively it should return BUSY or NO CARRIER, but never simply OK.) Windows DUN must be interpreting this as the "Error 678" I was seeing.

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  • How to change the outlining hover color in VS 2010?

    - by RCIX
    If i hover over the thin vertical bar on the left, it highlights the entire scope of the block that's to the right. When this scope is large, my entire screen flashes white (a consequence of my custom color scheme). Is there a way to change that color? i don't recall there being one when i made the theme.

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  • exiting from a blocking select call!

    - by Jay
    I am calling a third party API which creates a socket, does a connect and then calls select API by passing the socket to block forever. I don't have access to the socket. Is there some way in which I can make the select call come out from my application without having access to the socket? My platform is Windows.

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  • How to add next and previous buttons to my pager row

    - by eddy
    Hi folks!! How would I add next/previous buttons to this snippet, cause as you can see ,it will display as many links as it needs, so if you have a high number of pages then this might not be the best solution <c:choose> <c:when test="${pages >1}"> <div class="pagination art-hiddenfield" > <c:forEach var="i" begin="1"end="${pages}" step="1"> <c:url value="MaintenanceListVehicles.htm" var="url"> <c:param name="current" value="${i}"/> </c:url> <c:if test="${i==current}"> <a href="<c:out value="${url}"/> " class="current" > <c:out value="${i}" /></a> </c:if> <c:if test="${i!=current}"> <a href="<c:out value="${url}"/> " > <c:out value="${i}" /></a> </c:if> </c:forEach> </div> </c:when> <c:otherwise> <div align="center"> </div> </c:otherwise> </c:choose> CSS: .pagination .current { background: #26B; border: 1px solid #226EAD; color: white; } .pagination a { display: block; border: 1px solid #226EAD; color: #15B; text-decoration: none; float: left; margin-bottom: 5px; margin-right: 5px; padding: 0.3em 0.5em; } .pagination { font-size: 80%; float: right; } div { display: block; } This is what I get with my current code: And this is what I'd like to display, with ellipsis if possible Hope you can help me out.

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  • jquery show hidden div

    - by Fahad
    Firstly, I'm sort of embarrassed asking about this, so many people have already asked this question but even after having gone through so many posts, I'm unable to achieve what I want. Basically, a div, initially hidden, has to be displayed on a button click. I tried hiding the div using display:none and hide() and then displaying it using show(), toggle(), and css("display","block"). Using all sorts of combinations of the above, I was still unable to get the result. Code: <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <link href="css/smoothness/jquery-ui-1.9.2.custom.min.css" rel="stylesheet" type="text/css" /> <script src="jQuery/jquery-1.8.3.min.js" type="text/javascript"></script> <script src="jQuery/jquery-ui-1.9.2.custom.min.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function () { $('#one').hide(); $('#Button1').click(function () { $('#one').toggle(500); }); }); </script> </head> <body> <form id="form1" runat="server"> <div id="one" style="height: 20px;width:200px; background-color: Red; "> </div> <asp:Button ID="Button1" runat="server" Text="Show" /> </form> </body> </html> On button click, the div is shown for a brief second before it disappears again. The same thing happens if I use show() instead of toggle() in the above code. Again the same thing if I set style="display:none" to the div instead of using hide() and then use show() or toggle(). I also tried using $('#one').css("display","block"); but again, the same result. Can anyone please tell me where I'm going wrong. Just started learning jQuery and it is really frustrating when something apparently so simple will not work. Thanks in advance. :)

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  • Can .NET Task instances go out of scope during run?

    - by Henry Jackson
    If I have the following block of code in a method (using .NET 4 and the Task Parallel Library): var task = new Task(() => DoSomethingLongRunning()); task.Start(); and the method returns, will that task go out of scope and be garbage collected, or will it run to completion? I haven't noticed any issues with GCing, but want to make sure I'm not setting myself up for a race condition with the GC.

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  • JAVA SDK Modifying Table Column

    - by tathamr
    I have the ReportBlock from the type VTable that I am modifying. I am able to get the horizonatal block axis to modify the cells but, I cannot seem to modify the column header (different object). I started to look into trying to get back a smalltable but, I am not confident in this approach. Any idea?

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  • The simplest concurrency pattern

    - by Ilya Kogan
    Please, would you help me in reminding me of one of the simplest parallel programming techniques. How do I do the following in C#: Initial state: semaphore counter = 0 Thread 1: // Block until semaphore is signalled semaphore.Wait(); // wait until semaphore counter is 1 Thread 2: // Allow thread 1 to run: semaphore.Signal(); // increments from 0 to 1 It's not a mutex because there is no critical section, or rather you can say there is an infinite critical section. So what is it?

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  • Who use class variables in SOAP calls with Savon?

    - by Steffen Roller
    I'm writing a little client using Ruby and Savon. The interface changed significantly from version 0.7 to 0.8.x. All my calls don't work anymore :-(. How can I pass on a local member variable. Please see the example, @userName and @userPassword are not defined within the block. begin @response = @authentication_svc.request :wsdl, "AuthenticateUser" do http.headers["SOAPAction"] = "AuthenticateUser" soap.body = "#{@userName}#{@passwd}" end rescue Savon::SOAP::Fault = e @last_soap_error = e.message end

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  • Checking if a record in datareader is NULL

    - by user279521
    I have browsed thru other postings on S/O, but I can't find a solution that works for me. I have a datareader that might return a null value, and if so, I want to value to equal blank txtMiddleName.Text = rdrGetUserInfo.GetString(1) ?? ""; The string above does not work. When I walk thru the code, the code jumps to my error trapping block; Any ideas?

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  • Preferred Options for Webservice to Android

    - by Tim Almond
    I need to get an Android app to interface with an XML webservice (it's really just a request which returns XML), but as the data is large and includes some things I don't need (like a huge description block), I was thinking of transforming it via a server into a format that would be good for Android, and also to be reduced considering it will be used in a low bandwidth area. Does anyone have any suggestions for a good lightweight protocol? I'm especially thinking about libraries for Android that already exist for say REST or even delimited data.

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  • dynamic xpath expression

    - by Ferol
    Good day, colleagues! Tell me please, how to make a dynamic xpath-parsing: for example, instead of writing $domXPath-query('//[(@id = "article-id-18")]'); - write something like that $domXPath-query('//[(@id = "article-id-*")]');, because in my case, the site's script generate (every time) a new id for block, that contains article's text? So question, is above.

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  • pdfSharp moving items on page

    - by Azza
    Hi, I am trying to move content in a pdf document using pdfSharp. We have a number of documents that are the same size i.e. 488x320mm, the content within these documents is always positioned relative to the top right of the document but varies in size i.e. 210x330mm, 240x350mm etc. What i need to do is 'find' the content block and move it from its current position to the centre of the sheet. Please help!

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  • Visual Studio line deletion

    - by Sean
    Is there any way in Visual Studio 2003 that I can delete a line without it being copied into the clipboard? There are instances when I want to copy the first line of a block of text and then delete the following n lines but this then puts the last line I deleted into the clipboard, which is very annoying. I have come from a brief keymap background and I could easily do this with Alt-D. And while I'm on the subject, why on earth have MS stopped supporting the brief keymap?

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  • PHP's DOMXPath is stripping out my tags inside the matched text.

    - by Mint
    I asked this question yesterday, and at the time it was just what I needed, but while working with some live data I discovered that is wasn't quite doing what I expected. http://stackoverflow.com/questions/2571232/parse-html-with-phps-html-domdocument I gets the data from the HTML page, but then it also strips out all the HTML tags inside the captured block of text, which isn't what I want. (I might wan't to take some of the tags out, but not all, and this can be done later)

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  • How to position some text?

    - by Faery
    Sorry for the noobie and stupid question, but I know only a bit about css and I don't know how to style my site. Here is my code: HTML (Twig) : <div class="wrap"> <div> <img class="birthday" src="http://www.clker.com/cliparts/1/d/a/6/11970917161615154558carlitos_Balloons.svg.med.png"> <div class="try"> This friends have brithday today: {% for bd in birthdays %} <p> <a href="{{ path('friend_id', {'id': bd.id}) }}">{{ bd.name }}</a> <span class="years"> ({{ bd.years }} years) </span> </p> {% endfor %} </div> </div> </div> CSS: body { background-color: #FFFFF1; text-align: center; font-size: 17px; font-family: Tahoma, Geneva, sans-serif; } p { margin: 10px; } a { text-decoration: none; color: #6a9211; } a:hover { text-decoration: underline; } .wrap { width: 700px; margin: auto; } .birthday { width: 49px; height: 80px; float: left; margin-left: 150px; display: block; } .try { display: block; margin-right: 150px; margin-bottom: 50px; } .years { font-size: 12px; } And this is what I get. The thing I want to fix is Maria and Peter to be display under Anna and John, all of them 4 centered under the label This friends have birthday today:. I know that it's because of the image, but I don't know how to make it look fine. :( Please help! Thanks in advance!

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  • How can I retrieve the instance of an attribute's associated object?

    - by Brandon Linton
    I'm writing a PropertiesMustMatch validation attribute that can take a string property name as a parameter. I'd like it to find the corresponding property by name on that object and do a basic equality comparison. What's the best way to access this through reflection? Also, I checked out the Validation application block in the Enterprise Library and decided its PropertyComparisonValidator was way too intense for what we need.

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