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• NullReference Exception is thrown while getting a callback channel

  - by Yaroslav

  Hi! I am trying to get along with WCF's duplex contracts. A code from this article (http://msdn.microsoft.com/en-us/library/ms731184.aspx) ICalculatorDuplexCallback callback = null; callback = OperationContext.Current.GetCallbackChannel(); throws a NullReferenceException. So how can i manage this? Thanks for your attention!

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• Good Delphi Blogs?

  - by Andreas Rejbrand

  I just saw http://pages.cs.wisc.edu/~rkennedy/ which appears to be a very interesting in-depth blog about the Delphi programming language, compiler, and IDE. At the more basic level we also have the About site, and DelphiBasics. You can also have fun for a few minutes at http://www.scalabium.com/faq/dc_tips.htm. What are the most interesting blogs and sites devoted to Delphi? I am in particular interested in content at the advanced level.

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• How to encrypt in VBScript using AES?

  - by Jon

  I am looking to encrypt some data using Rijndael/AES in VBScript using a specific key and IV value. Are there any good function libraries or COM components that would be good to use? I looked at CAPICOM; it allows a passphrase only, and won't allow setting specific key and IV values.

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• how to download all links at once..

  - by user216112

  hello friends,i want to ask u ..is there any software..that download all the link at once.. like e.g. in w3school.com. if we want to download all the php tutorial at once.someone has told me "tglepote".bt i am getting on the google.plz help

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• Usage of Biztalk SAP Adapter without Biztalk Server to connect .NET and SAP

  - by Kottan

  Is it possible to use the Biztalk adapter pack whithout a Biztalk installation (Biztalk license is available)? I want to use the Biztalk Adapter for SAP RFC calls within a .NET Application (as a replacement of the SAP Connector for .NET, which is unfortunately no longer maintened by SAP and I don't can use third party products like "ErpConnect"). Makes this idea sense or not ? This questions can be also seen in conjunction of my question concerning connecting SAP and Microsoft (http://stackoverflow.com/questions/2198168/microsoft-and-sap)

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• How to change the text of UIBarButtonItem programmatically?

  - by user313439

  I've read this article: http://stackoverflow.com/questions/1225457/change-the-text-of-a-uilabel-uibarbuttonitem-on-a-toolbar-programmatically But it seems not working for my auto-hide toolbar? I also tried "barbuttonItem.title" to set the text, failed too. Any idea? Much thanks!

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• To create an inbox like Gmail in jQuery, would something like the Accordion effect work for opening

  - by snoopy

  I've been looking for a pre-built jQuery component that I could use to build an inbox for a messaging application: http://jqueryui.com/demos/accordion/ I was thinking that if I could close all of the elements in the Accordion, that would be equivalent to showing a list of unopened messages when the user first logs into their Inbox. And then, by clicking on the leaves of the Accordion, they can see each message one by one. Is this a good idea or is there some other jQuery plugin that would work better for this type of functionality?

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• Bread-crumb style navigation for Winforms

  - by lazycoder

  Does anybody know of a bread-crumb style navigation for Winforms like the one from DotNetBar. http://www.devcomponents.com/dotnetbar/BreadCrumbHorizontalTreeControl.aspx I really like that control. However I am using a other UI library already and just for this control I do not want a reference to another 4 MB lib. I just need this control. Does anybody if something like this is available as a standalone control?

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• Problem running android HelloTabWidget example - NullPointerException on addTab()

  - by Poindextrose

  I've tried the Tab Layout example, and I've also fixed the few typos in the example (and added all the activities to the manifest). However, when I run it on the emulator I get a NullPointerException on the first line that says tabHost.addTab(spec); So my question, of course, is. What is wrong with the example that would cause this exception? I'm using Eclipse Galileo and set the target package as Android 1.5. So far I've had no other problems with the other examples on the android dev site. package com.example.hellotabwidget; import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.os.Bundle; import android.widget.TabHost; public class HelloTabWidget extends TabActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) throws RuntimeException { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); // Resource object to get Drawables TabHost tabHost = getTabHost(); // The activity TabHost TabHost.TabSpec spec; // Reusable TabSpec for each tab Intent intent; // Reusable Intent for each tab // Create an Intent to launch an Activity for the tab (to be reused) //final Context context = getApplicationContext(); intent = new Intent().setClass(this, ArtistsActivity.class); // Initialize a TabSpec for each tab and add it to the TabHost spec = tabHost.newTabSpec("artists").setIndicator("Artists", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); //******** NullPointerException after running this line // Do the same for the other tabs intent = new Intent().setClass(this, AlbumsActivity.class); spec = tabHost.newTabSpec("albums").setIndicator("Albums", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, SongsActivity.class); spec = tabHost.newTabSpec("songs").setIndicator("Songs", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); tabHost.setCurrentTabByTag("artists"); } } main.xml: <?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp"> <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp" /> </LinearLayout> </TabHost>

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• How to enable .NET Extensibility, ASP.NET, ISAPI Extensions, and ISAPI Filters on Windows Small Buis

  - by ruslander

  Today wanting to deploy an asp.net mvc application I had to enable .NET Extensibility, ASP.NET, ISAPI Extensions, and ISAPI Filters on Win Small Buisness Server 2008 I was surprised 1h and I could not find how to do it. This was the hint but ... still nothing. http://blogs.dovetailsoftware.com/blogs/kmiller/archive/2008/10/07/deploying-an-asp-net-mvc-web-application-to-iis7.aspx

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• seekbar progress customization

  - by Mojo Risin

  Hi all, Using progress_horizontal.xml as a base drawable for my seekbar i was able to customize it pretty well. But unfortunately i stuck with the following problem. I need my progress to be made from two horizontal lines with different color something like this http://picasaweb.google.com/manigoad/Other#5442553107070487330 . In this case a blue line and transparent line below it. So how can i make my progress to be made from two different colors. Tnaks

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• MS cash drawer with epson TM-IV88 Status API

  - by Xience

  Does anyone know how to monitor cash drawer's open/close state using Advanced Printer Driver's Status API for Epson TM-88IV thermal printer. I wish i could use OPOS for ADK .Net, but haven't had luck setting it up on windows 7. Does anyone know how to be a part of epson developer network. I have gone through the information available at www.epson-pos.com but there is no information available on POS/ESC codes. Please help...........

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• mysql query using jdbc

  - by S.PRATHIBA

  Hi all, I need to retrieve the last 20 values from my database.For example I have the following table Service_ID Service_Type consumer_feedback | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 36 | Printer | 1 | | 36 | Printer | 0 | | 37 | Printer | 0 | | 39 | Printer | -1 | | 39 | Printer | 0 | | 40 | Printer | 0 | I need to retrieve last 10 values from the table.I need to do the operation using jdbc.I have attached the sample code.Kindly help me. import java.io.; import java.sql.; public class CountRows2 { public static void main(String[] args) { System.out.println("Count number of rows in a specific table!"); Connection con = null; int count = 0; try{ Class.forName("com.mysql.jdbc.Driver"); con = DriverManager.getConnection ("jdbc:mysql://localhost:3306/prathi","root","mysql"); try{ Statement st = con.createStatement(); ResultSet res1 = st.executeQuery("SELECT COUNT(*) FROM consumer1" ); while (res1.next()){ count = res1.getInt(1); } System.out.println("Number of column:"+count); } catch (SQLException s){ System.out.println("SQL statement is not executed!"); } } catch (Exception e){ e.printStackTrace(); } try{ Class.forName("com.mysql.jdbc.Driver"); con = DriverManager.getConnection ("jdbc:mysql://localhost:3306/prathi","root","mysql"); try{ Statement st = con.createStatement(); ResultSet res1 = st.executeQuery("SELECT * FROM consumer1 LIMIT count-10,10"); while (res1.next()){ int Service = res1.getInt(1); String s1 = res1.getString(2); int feedback=res1.getInt(3); } System.out.println("Service" + " " +"s1" + " " +"feedback"); } catch (SQLException s){ System.out.println("SQL statement is not executed!"); } } catch (Exception e){ e.printStackTrace(); } } } I am getting the output as: C:javac CountRows2.java C:java CountRows2 Count number of rows in a specific table! Number of column:558 SQL statement is not executed! Thanks a lot....

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• CSS * {margin: 0;padding: 0;} override

  - by StealthRT

  Hey all, i am in need of some help with figuring out how to override the "* {margin: 0;padding: 0;}" in my css. The reason why is that i have this css: .postcomments { width: 547px; padding: 5px 5px 5px 5px; margin: 0 0 5px 0;} .postcomments a { text-decoration: underline;} .postcomments ul { margin: 0; padding: 0; list-style-type: none;} .postcomments ul li { width: 547px; margin: 0 0 5px 0; padding: 0; list-style-type: none;} .postcomments .right { color: #474747; font-size: 11px; background: #fff url('http://www.nextbowluser.com/img/ucBG.gif') no-repeat top left; line-height: 17px; padding: 5px 0 0 0; width: 430px; position: relative; float: right; min-height: 50px;} .postcomments .right .bottom { padding: 0 5px 15px 5px; background: #fff url('http://www.nextbowluser.com/img/ucBG.gif') no-repeat bottom right; min-height: 50px;} .postcomments .arrow { left: -15px; top: 20px; position: absolute;} .avatar { border: none !important;} .postcomments .left {float: left; margin: 0 7px 0 0;} .postcomments .gravatar { background: #fff; width: 80px; height: 60px; margin: 0 0px 0 0; padding: 3px;} .postcomments .name { font-size: 11px; margin: 2px 0 0 0; color: #000;} .avatar { border: none !important;} and it displays just fine WITHOUT the * {margin: 0;padding: 0;}: 1st comment 2nd comment 3rd comment However, when i add that to the CSS, it makes the comments stack wrong: 1st comment 2nd comment 3rd comment I would just take out the * {margin: 0;padding: 0;} but some other things on the page needs that in order for that to be displayed correctly. So my question is, how can i override the {margin: 0;padding: 0;} for just that postcomments part of the page? Thanks! :o) David

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• HTML character decoding in Objective-C / Cocoa Touch

  - by skidding

  First of all, I found this: http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape, but it doesn't work for me. My encoded characters (come from a RSS feed, btw) look like this: &#038; I searched all over the net and found related discussions, but no fix for my particular encoding, I think they are called hexadecimal characters. Thanks.

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• Seeking a simultaneous fade and blur effect using JQuery or Javascript

  - by Heath Waller

  Can anyone think of a way to simulate the fade/blur flash effect used in the following website: http://www.frenchlaundry.com/ (image fades and blurs on hover, while text fades in simultaneously) using JQuery? I am looking to have this whole chain of effects happen on load or when the DOM is ready (instead of on hover). And by blur, I mean a gaussian-type of blur - possibly using Pixastic (?) I am really new at this, so please be gentle :) Thank you.

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• HTTP Basic Auth for Selenium in Firefox 2

  - by Peter

  I know that normally you can login to sites that require HTTP basic authentication with Selenium by passing the username and password in the URL, e.g.: selenium.open("http://myusername:[email protected]/mypath"); I've been running a Selenium test with Firefox 2 and there I still get the "Authentication Required" dialog window? Thanks for any hints! Peter

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• Git - Permission denied (publickey).

  - by teepusink

  Hi, I'm on Mac Snow Leopard and I just installed git. I just tried git clone [email protected]:cakebook.git but that gives me this error. Initialized empty Git repository in /Users/username/Documents/cakebook/.git/ Permission denied (publickey). fatal: The remote end hung up unexpectedly What am I missing? I've also tried doing ssh-keygen with no passphase but still same error. Thanks, Tee

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• C# XNA: AI Engine?

  - by Rosarch

  I'm developing a game with zombie running around in a swamp. I want AIs to have functionality like "chase this target" or "run away". A major stumbling block is pathfinding. Is there a good pathfinding/AI engine in XNA, or should I roll my own? Does anyone have any experience with this: http://www.codeplex.com/simpleAI?

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• Visual studio keyboard shortcuts cheat sheet - desktop size

  - by nailitdown

  OK - this is pretty specific, i'm looking for a cheat sheet for visual studio keyboard shortcuts that I can set as my desktop bg. so, something in a modest 1280 x 1024. Something like this; http://www.microsoft.com/downloads/details.aspx?FamilyID=c15d210d-a926-46a8-a586-31f8a2e576fe&DisplayLang=en but more succinct. Anyone got juicy linkage? Is this a DIY job?

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• Excel VBA and InternetExplorer causing errors on website

  - by SWD

  I have some "clever" users who have written an excel spreadsheet that automates some of their tasks on our intranet/timesheet. It seems as if the instance of Internet Explorer that is created is not doing everything I expect a browser to do, e.g. set cookies. Is there a way to detect if a user is hitting a web site with a VBA com object instance of Internet Explorer? I can't keep users from building creative solutions but I want to be able to handle them. thanks

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• Math for core animation?

  - by jasonbogd

  What is a good level of math required for, like, advanced core animation? Take this for example: http://cocoadex.com/2008/01/lemur-math.html And what's a good book/resource to learn it? -Jason

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• Help with regex to detect urls in a string

  - by Ali Taha Ali Mahboub

  Hi guys i found this regex to detect urls in a string and wraps them inside the tag public static String detectUrls(String text) { String newText = text .replaceAll("(?<!http://)www\\.[\\w/%.\\-?&=]+", "http://$0") .replaceAll("(?:https?|ftps?|http?)://[\\w/%.\\-?&=]+", "<a href='$0'>$0</a>"); return newText; } but this regex doesn't work with the following pattern: https://www.myserver.com so please advise.

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• NSIS Silent Install changing default options

  - by esryl

  I have a third party application I would like to silent install from the command line. The application is PPLive available at: http://www.pptv.com/en/ It is an NSIS installer, and currently when silently installed, installs toolbars, and additional pieces of software, launches on completion etc. Without repackaging it, how do I control the checkbox options on the pages of the normal installer from the silent command line install. Is it even possible?

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• Secure Delete PCI-DSS Windows Environment

  - by Brennan Mann

  Hello, I have been reviewing a number of applications for securing deleting files. I understand the concepts of overwriting the file several times with zeros and random characters; however, I don't understand the concept of renaming the file up to thirty times before actually deleting the file. Any feedback would greatly be appreciated. I am currently working on a PCI DSS project. URL - SDELETE by Sysinternals http://technet.microsoft.com/en-us/sysinternals/bb897443.aspx Thanks, Brennan

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