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• Why does my Excel add-in only half work?

  - by Dan Crowther

  I've created an Excel add-in using Visual Studio 2008. It has a ribbon, a bunch of panes and code that adds sheets and ranges and gets information scraped from a web page. When I run it on my dev PC it works perfectly. I used the Publish command to publich it and installed on a Windows XP virtual PC. The installation seemed fine and when I open Excel I see my ribbon. If I click a button that shows a pane, up pops the pane. If I enter some details into the pane that should create a range and populate it with data from a web page, the range is created but the web page is not visited (I have tested that I have connectivity). One of my buttons adds a hidden worksheet and another displays or hides that sheet. One of these buttons is not working. I've tried everything I can think of. I'm wondering if there are any permissions or trust issues I need to deal with?

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• VB.net 'cross-referencing' tables.

  - by Lee

  Hello, I have a DataGridView that is being filled with data from a table. Inside this table is a column called 'group' that has the ID of an individual group in another table. What I would like to do, is when the DataGridView is filled, instead of showing the ID contained in 'group', I'd like it to display the name of the group. Is there some type of VB.net 'magic' that can do this, or do I need to cross-reference the data myself? Here is a breakdown of what the 2 tables look like: table1 id group (this holds the value of column id in table 2) weight last_update table2 id description (this is what I would like to be displayed in the DGV.) take care, lee BTW - I am using Visual Studios Express.

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• ASP.Net Web Site Project - Errors Not Caught at Compile time

  - by 5arx

  For the first time in my career, I'm working on an ASP.Net (v3.5) project that has been set up as a Visual Studio 2008/10 Web Site Project. I'm not keen on this way of working this way for various reasons but for the moment and until such time as the company sees the virtue in working in an environment with namespaces, designer and project files etc., I have to continue with the existing codebase. I've run into some odd issues since I began this but perhaps the oddest one of all is that althought VS lets me build the code, it doesn't reliably pick up compilation errors so these are not noticed until runtime. I know the website model allows dynamic/hot compilation when a request is made for a specific but I can't see why it wouldn't do this when I manually (F5) build/rebuild the project. Its immensely annoying as you can imagine and I can't find a workaround. Could any StackOverflow person help with suome suggestions to make things better?

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• What resources will help me understand the fundamentals of Relational Database Systems.

  - by Rachel

  This are few of the fundamental database questions which has always given me trouble. I have tried using google and wiki but I somehow I miss out on understanding the functionality rather than terminology. If possible would really appreciate if someone can share more insights on this questions using some visual representative examples. What is a key? A candidate key? A primary key? An alternate key? A foreign key? What is an index and how does it help your database? What are the data types available and when to use which ones?

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• Item Renderer having trouble updating

  - by duder

  I have a list ItemRenderer that has 2 states. When it initializes, I set it to 1 state and listen for an event that switches it to state 2. protected function onCreationComplete(event:FlexEvent):void{ currentState = "state1"; addEventListener(CustomEvent.Event1, switch); } protected function switch(event:FlexEvent):void{ currentState = "state2"; } The difference between the 2 states is that I hide/show some labels. The problem is that it doesn't work. I still see the visual of the old state, even though if I Alert.show(currentState), it shows the correct state name. I've tried adding the line invalidateDisplayList(); inside the switch function but still no luck. protected function switch(event:FlexEvent):void{ currentState = "state2"; invalidateDisplayList(); } What am I doing wrong. Any ideas how I can get this ItemRenderer to really update?

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• LockWorkStation - Compilation error - identifier not found

  - by Microkernel

  Hi All, I am writing an application in which I got to lock the computer screen (OS is Windows). My Application is in C++. For this purpose I used the LockWorkStation() API defined on msdn, http://msdn.microsoft.com/en-us/library/aa376875%28VS.85%29.aspx I have included windows.h as told but still I am getting compilation error: .\source.cpp(5) : error C3861: 'LockWorkStation': identifier not found here is a sample code thats giving error. #include <Windows.h> int main() { LockWorkStation(); return 0; } Please tell me what I am missing here :( I am using MS-Visual studio 2005. Regards.

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• Justified navigation buttons

  - by Kaivosukeltaja

  I'm trying to create the primary navigation menu for a website that will have a variable amount of primary menu items. The navigation bar is horizontal and has a width of 738px. I would like to have the leftmost item 18px from the left and the rightmost item 18px from the right edge of the element, with the other menu items spread evenly between them. I'm using a tableless layout. So far I haven't been able to make it work exactly like I want. Setting margin: auto doesn't seem to help, and I can't keep the 18px margin on both sides using a table. One idea was to use text-align: justify but it doesn't justify single lines. Is there a simple or less simple way of doing this, or am I going to have to ask the AD to relax his visual requirements?

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• Source Insight: Show me Enum Values

  - by JXG

  I'm programming in C and using Source Insight. I have an enum type with a lot of constants (like 100). I have debug prints that print out variable values, but they (of course) print out as integers. What I'd like to do is click on the name of an enum constant, and see its numeric value displayed somewhere. (I've seen this done in a Visual Studio plugin, so it must be possible.) That is, assume I have enum colors { ORANGE, PURPLE, PINK }; I want to click on (or select, or something) PURPLE and see the value 1 somewhere visible (ideally, the symbol window or context window, but I'm not particular). Is there an easy way to do this in Source Insight? Is there a difficult way, at least (such as writing a macro)?

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• Problem with MvcContrib

  - by Sasha

  I want to use MvcContrib Grid helper, but i stuck on the problem - it's not working. I downloaded release for mvc 1, i have dll on my hard drive, i added a reference to my project, but i always getting following error: 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'Grid' and no extension method 'Grid' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?) I am using Visual Web Developer 2008 if this is important The question is: how correctly add this to my project? Can you give me step by step instruction? Thanks

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• Automatically generate buddy classes from model in C#

  - by JohnnyO

  I use Linq to Sql (although this is equally applicable in Entity Framework) for my models, and I'm finding myself creating buddy classes for my models all the time. I find this time consuming and repetitive. Is there an easy way to automatically generate these buddy classes based on the models? Perhaps a visual studio macro? An example of a buddy class that I'd like to create: [MetadataType(typeof(PersonMetadata))] public partial class Person { } public class PersonMetadata { public object Id { get; set; } public object FirstName { get; set; } } Thanks in advance.

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• Looking for a free tool to visualize object relationships for C#

  - by vfilby

  Here is my ideal solution: a free tool that reads a .csporj or .sln and generates a pretty picture that shows all the objects and how they are related. By relationships, I don't mean inheritance but rather dependency. For example, if we have a Car object and Car has a member variable Wheel, I would like that Car depends on Wheel to be visualized in the graph. I know visual studio can do inheritance graphs, but that is only half of what I am looking for. Is what I am looking for possible? Are there any tools that do something similar? Related question for java: http://stackoverflow.com/questions/1824261/are-there-any-tools-to-visualize-the-objects-being-used-in-a-program

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• Any way to rename a deployed ClickOnce app?

  - by tobinibot

  My company has a ClickOnce that has been in use with our customers for about a year now. We're going through a re-branding, and want to change the name of the application. However, just changing all of the normal name options in Visual Studio, and then building a new deploy obviously changes the manifests that the existing app is looking for, so essentially any installed apps never see the new updates. I've tried messing around with the .application file, but haven't been able to get anything to work yet. Is there anyway to rename a deployed ClickOnce app, or do we have to get people to just install the new app?

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• Can't Add LINQ to SQL classes to projects in VS2010

  - by MisterJames

  I just ran into something in Visual Studio 2010 RC that wasn't previously happening (like, yesterday). No software changes here, but I did run into some muck yesterday when compiling that required a reboot. I am unable to add LINQ to SQL classes to any project through the add dialog. I have created ASP.NET web sites, ASP.NET MVC projects - both of these as 'templated' and as 'empty' - and there appear to be no templates installed or available. I have made sure that the project targets the 4.0 Framework. I can easily add a new database and the ADO.NET entity framework templates are there. As a workaround I can copy a DBML file to my project, delete all tables and sprocs, update the connection string and use the leftover shell (the designer works fine like this), but it's a pain. Has anyone else had their templates drop? Figured out how to reinstall them?

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• Converting from ANSI to Unicode

  - by Rayne

  Hi all, I'm using Visual Studio .NET 2003, and I'm trying to convert a program written in purely ANSI characters to be independent of Unicode/Multi-byte characters. The program has a callback function of pcap_loop, called "got_packet". It's defined as void got_packet(u_char *user, const struct pcap_pkthdr *header, const u_char *cpacket) { USES_CONVERSION; _TUCHAR *packet; packet = A2T(cpacket); ... } However, I get the error message error C2440: 'type cast': cannot convert from 'const u_char *' to 'ATL::CA2WEX<>' How do fix this? Thank you. Regards, Rayne

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• How would you communicate with aliens as a computer scientist?

  - by Pyrolistical

  Let's say aliens arrive on Earth and instead of just sending mathematicians and linguistic experts governments around the work decide to send an expert of major field. After a quick round of sorting you are paired up with an alien computer scientist. Given you don't understand each others language how would you using computer science to start the ground work of communication? eg. We know binary is universal, but not the way we write it. The symbols are not universal nor is the the direction we write it (MSB vs LSB and left vs right) Assume aliens are "similar" to us physically it won't impede visual communication.

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• Does a WCF service with basicHttpBinding create a new connection for each request?

  - by Phil Wright

  I have a Silverlight client calling a WCF Service on an IIS web server. It uses the default basicHttpBinding setting for the calls. My client code has the usual Visual Studio generated proxy that is generated when using the 'Update Service Reference' menu option. Does every call to the service using that proxy use the same connection? Or does it create a connection each time a call is made and then close it down once the reply is received? As the client is actually making a SOAP call over HTTP I just assumed that every service request had a new connection created but I want to check if that is the case? (I need to know because if it creates a new connection each time then each request could end up at a different server because there are several servers being load balanced. It is uses a single connection for the duration of the proxy then I can assume they all end up at the same machine and so it would cache state.)

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• Windows Device Emulator V3, windows 7 + Network

  - by Petoj

  Well im debugging a windows CE application from visual studio in the Windows Device Emulator, now to setup the network i go to File - Configure - Network, i enable a network card and press OK, then i get this message: "The required Virtual Machine Network Driver could not be found. Make sure that Virtual PC 2007 is installed. You can install Virtual PC 2007 from http://go.microsoft.com/fwlink/?linkid=46859" Im running windows 7 and got a built-in Virtual pc and i would rather not have 2 installed at the same time is there any way to get this network driver without installing virtual PC 2007?

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• Online product demo environment for Windows applications

  - by Stefanos Tses

  I'm looking for a way to allow potential customers to try my application before they buy it. The product is a windows forms application that requires an SQL Server database to operate. Although I have a functional demo that the customer can install on their network, I want to make it easier for them by have them "play" with it at my environment. I remember Microsoft had (has?) something similar. I was testing Visual Studio a few years ago in a virtual environment where I was connecting to a server at Microsoft. Any suggestions? Thanks.

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• Can Ruby on Rails handle AJAX Response by Static Javascript code? by using RJS?

  - by Jian Lin

  So it looks like on RoR, when Ajax (using form_remote_tag) returns a success code, Javascript is also returned to handle the visual effects. (this is the RJS mechanism) using Fiddler, I do see the following response: try { Element.update("vote_score", "Score 58"); $("vote_score").visualEffect("highlight"); } catch (e) { alert('RJS error:\n\n' + e.toString()); alert('Element.update(\"vote_score\", \"Score 58\");\n$(\"vote_score\").visualEffect(\"highlight\");'); throw e } Will there be situation where the code is quite big (like 1 or 2k) that RJS can use some sort of static Javascript already loaded to handle the effect? Is there any other ways to use static Javascript already loaded with the page? Must it be just raw Javascript and use the Prototype's Ajax success response to call the static Javascript code, or can it be some Rails mechanism related to RJS?

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• Import Namespace System.Query

  - by GateKiller

  I am trying to load Linq on my .Net 3.5 enabled web server by adding the following to my .aspx page: <%@ Import Namespace="System.Query" %> However, this fails and tells me it cannot find the namespace. The type or namespace name 'Query' does not exist in the namespace 'System' I have also tried with no luck: System.Data.Linq System.Linq System.Xml.Linq I believe that .Net 3.5 is working because var hello = "Hello World" seems to work. Can anyone help please? Cheers, Stephen PS: I just want to clarify that I don't use Visual Studio, I simple have a Text Editor and write my code directly into .aspx files.

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• Best Template Engine for ASP.NET MVC

  - by OnesimusUnbound

  I am exploring ASP.NET MVC and I wanted to add jQuery to make the site interactive. I used StringTemplate, ported to .Net, as my template engine to generate html and to send JSON. However, when I view the page, I could not see it. After debugging, I've realized that the $ is used by the StringTemplate to access property, etc and jQuery uses it too to manipulate the DOM. Gee, I've looked on other template engines and most of them uses the dollar sign :(. Any alternative template engine for ASP.Net MVC? I wanted to retain jQuery because MSFT announced that it will used in the Visual Studio (2008?) Thanks in Advance :)

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• C# Application Becomes Slow and Unresponsive as String in Multiline Textbox Grows

  - by Jim Fell

  Hello. I have a C# application in which a LOT of information is being added to a Textbox for display to the user. Upon processing of the data, almost immediately, the application becomes very slow and unresponsive. This is how I am currently attempting to handle this: var saLines = textBox1.Lines; var saNewLines = saLines.Skip(50); textBox1.Lines = saNewLines.ToArray(); This code is run from a timer every 100mS. Is there a better way to handle this? I am using Microsoft Visual C# 2008 Express Edition. Thanks.

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• Strange thing about .NET 4.0 filesystem enumeration functionality

  - by codymanix

  I just read a page of "Whats new .NET Framework 4.0". I have trouble understanding the last paragraph: To remove open handles on enumerated directories or files Create a custom method (or function in Visual Basic) to contain your enumeration code. Apply the MethodImplAttribute attribute with the NoInlining option to the new method. For example: [MethodImplAttribute(MethodImplOptions.NoInlining)] Private void Enumerate() Include the following method calls, to run after your enumeration code: * The GC.Collect() method (no parameters). * The GC.WaitForPendingFinalizers() method. Why the attribute NoInlining? What harm would inlining do here? Why call the garbage collector manually, why not making the enumerator implement IDisposable in the first place? I suspect they use FindFirstFile()/FindNextFile() API calls for the imlementation, so FindClose() has to be called in any case if the enumeration is done.

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• ReturnUrl = Default.aspx for MVC?

  - by Cynthia

  I'm trying to secure my entire MVC site, so before the Home controller, I added an [Authorize] attribute. Now if you run it from Visual Studio or navigate using the root URL (e.g. http://localhost:2897) it does redirect to the login page, as expected. However the URL in the address bar after redirection looks like this: http://localhost:2897/Account/LogOn?ReturnUrl=%2fdefault.aspx%3f I haven't tested this out, seeing as I have not implemented my authentication code. However, this looks like a big problem to me, since I do not have a default.aspx in my project! My authentication tag in the web.config looks like this: <authentication mode="Forms"> <forms loginUrl="~/Account/LogOn" defaultUrl="~/Home/Index" timeout="2880"/> </authentication> Why doesn't it pick up this route as the default ReturnUrl instead of default.aspx?

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• Implement a generic C++/CLI interface in a C# generic interface

  - by Florent

  I have a C++/CLI generic interface like this : using namespace System::Collections::Generic; namespace Test { generic <class T> public interface class IElementList { property List<T>^ Elements; }; } and I want to implement it in a C# generic interface like this : using Test; namespace U { public interface IElementLightList<T> : IElementList<T> where T : IElementLight { bool isFrozen(); bool isPastable(); } } This don't work, Visual Studio is not able to see C++/CLI IElementList interface ! I tested with a not generic C++/CLI interface and this work. What I missed ?

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