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• Facebook Oauth Logout

  - by Derek Troy-West

  I have an application that integrates with Facebook using Oauth 2. I can authorize with FB and query their REST and Graph APIs perfectly well, but when I authorize an active browser session is created with FB. I can then log-out of my application just fine, but the session with FB persists, so if anyone else uses the browser they will see the previous users FB account (unless the previous user manually logs out of FB also). The steps I take to authorize are: Call [LINK: graph.facebook.com/oauth/authorize?client_id...] This step opens a Facebook login/connect window if the user's browser doesn't already have an active FB session. Once they log-in to facebook they redirect to my site with a code I can exchange for an oauth token. Call [LINK: graph.facebook.com/oauth/access_token?client_id..] with the code from (1) Now I have an Oauth Token, and the user's browser is logged into my site, and into FB. I call a bunch of APIs to do stuff: i.e. [LINK: graph.facebook.com/me?access_token=..] Lets say my user wants to log out of my site. The FB terms and conditions demand that I perform Single Sign Off, so when the user logs out of my site, they also are logged out of Facebook. There are arguments that this is a bit daft, but I'm happy to comply if there is any way of actually achieving that. I have seen suggestions that: A. I use the Javascript API to logout: FB.Connect.logout(). Well I tried using that, but it didn't work, and I'm not sure exactly how it could, as I don't use the Javascript API in any way on my site. The session isn't maintained or created by the Javascript API so I'm not sure how it's supposed to expire it either. B. Use [LINK: facebook.com/logout.php]. This was suggested by an admin in the Facebook forums some time ago. The example given related to the old way of getting FB sessions (non-oauth) so I don't think I can apply it in my case. C. Use the old REST api expireSession or revokeAuthorization. I tried both of these and while they do expire the Oauth token they don't invalidate the session that the browser is currently using so it has no effect, the user is not logged out of Facebook. I'm really at a bit of a loose end, the Facebook documentation is patchy, ambiguous and pretty poor. The support on the forums is non-existant, at the moment I can't even log in to the facebook forum, and aside from that, their own FB Connect integration doesn't even work on the forum itself. Doesn't inspire much confidence. Ta for any help you can offer. Derek ps. Had to change HTTPS to LINK, not enough karma to post links which is probably fair enough.

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• Config transformations and “TransformXml task failed” error message

  - by Troy Hunt

  I’ve just enabled config transformations on a .NET 3.5 project in VS2010 RC after watching Scott Hanselman’s video on web deployment. Unfortunately every time I go to publish I now get the following error: The "TransformXml" task failed unexpectedly. System.UriFormatException: Invalid URI: The URI is empty. at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) at System.Uri..ctor(String uriString) at Microsoft.Web.Publishing.Tasks.TransformXml.Execute() at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask, Boolean& taskResult) If I take a brand new VS2010 web application which already has the config transformations by default I don’t have a problem so I suspect my issue is project related. Has anyone come across this before or have any ideas on a fix?

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• WPF - Query string parameters on page

  - by Troy

  I am very new to WPF and have what appears to be a simple question: I have a Frame and I set the Source to the Uri of one of my pages. I want to pass some query string parameters to the page, but I am not sure how to access them in the Loaded event of the Page.

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• What’s the status of CAT.NET?

  - by Troy Hunt

  I’m trying to find Microsoft CAT.NET for VS2010 and it looks like there was a beta of their 2.0 version but every link to it in Microsoft Connect is now dead. This is the most recent reference I could find: http://blogs.msdn.com/securitytools/archive/2010/02/05/how-to-use-cat-net-2-0-beta.aspx Some references suggest it may have been rolled into FxCop. Does anyone know the status of the project?

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• Can I use a class as an object in C# to create instances of that class?

  - by Troy

  I'm writing a fairly uncomplicated program which can "connect" to several different types of data sources including text files and various databases. I've decided to implement each of these connection types as a class inherited from an interface I called iConnection. So, for example, I have TextConnection, MySQLConnection, &c... as classes. In another static class I've got a dictionary with human-readable names for these connections as keys. For the value of each dictionary entry, I want the class itself. That way, I can do things like: newConnection = new dict[connectionTypeString](); Is there a way to do something like this? I'm fairly new to C# so I'd appreciate any help.

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• SQLCMD Syntax error when running script that runs fine in management studio

  - by Troy

  When I run the this select '$(''test'')' in SQL Management Studio 2008 it returns $('test') When I run sqlcmd -S SERVER -E -d DATABASE -q "select "$(''test'')" on the command line it returns Sqlcmd: Error: Syntax error at line 1 near command '''. If I remove the dollar sign it works. Is the "$" a special character? Is this a sqlcmd bug? How can I change the script to get the desired result.

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• OleDb database to DataSet and back in c#?

  - by Troy

  I'm writing a program that lets a user: Connect to an (arbitrary) View all of the tables in that database in separate DataGridViews Edit them in the program, generate random data, and see the results Choose to commit those changes or revert So I discovered the DataSet class, which looks like it's capable of holding everything that a database would, and I decided that the best thing to do here would be to load everything into one dataset, let the user edit it, and then save the dataset back to the database. The problem is that the only way I can find to load the database tables is this: set = new DataSet(); DataTable schema = connection.GetOleDbSchemaTable( OleDbSchemaGuid.Tables, new string[] { null, null, null, "TABLE" }); foreach (DataRow row in schema.Rows) { string tableName = row.Field<string>("TABLE_NAME"); DataTable dTable = new DataTable(); new OleDbDataAdapter("SELECT * FROM " + tableName, connection).Fill(dTable); dTable.TableName = tableName; set.Tables.Add(dTable); } while it seems like there should be a simpler way given that datasets appear to be designed for exactly this purpose. The real problem though is when I try saving these things. In order to use the OleDbDataAdapter.Update() method, I'm told that I have to provide valid INSERT queries. Doesn't that kind of negate the whole point of having a class to handle this stuff for me? Anyway, I'm hoping somebody can either explain how to load and save a database into a dataset or maybe give me a better idea of how to do what I'm trying to do. I could always parse the commands together myself, but that doesn't seem like the best solution.

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• How can I have an mx:Window automatically resize to its content?

  - by Troy Gilbert

  I'm creating windows in a Flex application (AIR) using the mx:Window component. I'd like the window to be automatically sized to its content (because it will be dynamic), in the same way that an mx:Panel or mx:Box would be. I've customized components before, so I'm somewhat familiar with the UIComponent lifecycle, but I'm not quite sure how best to do the logic for auto-sizing a container. If it makes it easier, I'm not expecting that the window auto-size to its content at any time, thought that would be a bonus!

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• Unusual request URL in ASP.NET health monitoring event

  - by Troy Hunt

  I’m seeing a rather strange occurrence in the request information section of an ASP.NET health monitoring email I hope someone can shed some light on. This is a publicly facing website which runs on infrastructure at an Indian hosting provider. Health monitoring is notifying us of server errors via automated email but every now and then the requested URL appears as a totally different website. For example: Request information: Request URL: http://www.baidu.com/Default.aspx Request path: /Default.aspx User host address: 221.13.128.175 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE Obviously the site in question is not Baidu and obviously this attribute is not the referrer either; the “Request URL” value is the path which has generated the error. The IP address is located in Beijing (coincidental given the Baidu address?) and in this instance it looks like the SQL server backend was not accessible (I haven't included the entire error message for security's sake). What would cause the request URL attribute to be arbitrarily changed to that of another site? I’ve never seen this occur in a health monitoring event before. Thanks!

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• Is there any free Equation Editor Control

  - by troy

  Hi am going to do some project there i need to show integral , sigma, pie , etc.. so is there any equation edtior controls available. so I have to integrate to my Asp.Net project I got one editor ie: LAtex Equation editor but it show the html format in the textbox ,and also it show his site name etc on the Equation popup editor, it not free at all. Any idea pls..

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• Is it possible for SharpSvn to retrieve log messages by author?

  - by Troy Hunt

  As per the title of the question, I’m wondering if there’s any mechanism to invoke GetLog with an author parameter. Nothing is jumping out at me in the documentation either for GetLog or SvnLogArgs. Does anyone have any thoughts on this? Alternative suggestions on how to do this are welcome.

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• Pop3 to SMTP message custom forwarder in C#

  - by Troy

  I'd like to write a service that periodically checks a POP3 account for new messages and based on custom business logic forwards the messages to an appropriate "To", and possibly changes the "From" as well. I might need to keep some messages on the server until certain conditions are ready for them to be forwarded. I found a sample using Chilkat .NET components that might work: http://www.example-code.com/csharp/pop3_forwarder.asp My question is: Are there any other examples of this in the .NET space using any other components? Thanks!

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• Does SharpSVN have an API to manage repository permissions

  - by Troy Hunt

  Does anyone know if there is any API exposed to manage repository permissions within SharpSVN? For example, programatically adding read and write permissions on a per repository basis. Alternatively, any other thoughts on managing permissions with other SVN APIs? Worst case wil be manually managing the contents of svnaccessfile but this is a last resort. Thanks.

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• Illegal forward reference

  - by Troy

  When trying to declare a static array in my program I receive a static forward reference error, i'm not sure what I am doing wrong here... static Square fieldGrid [ ] [ ] = new Square [ ROWSIZE ] [ COLSIZE ]; this is what I am using.

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• ETL mechanisms for MySQL to SQL Server over WAN

  - by Troy Hunt

  I’m looking for some feedback on mechanisms to batch data from MySQL Community Server 5.1.32 with an external host down to an internal SQL Server 05 Enterprise machine over VPN. The external box accumulates data throughout business hours (about 100Mb per day), which then needs to be transferred internationally across a WAN connection to an internal corporate environment before some BI work is performed. This should just be change-sets making their way down each night. I’m interested in thoughts on the ETL mechanisms people have successfully used in similar scenarios before. SSIS seems like a potential candidate; can anyone comment on the suitability for this scenario? Alternatively, other thoughts on how to do this in a cost-conscious way would be most appreciated. Thanks!

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• jQuery UI Tabs - bind tabs to links on the same page

  - by Troy

  Hello, I'm trying to bind tabs to a link on the same page, but I'm a relative newby to jQuery and need some help. I have the tabs working with the code from jQuery UI site. However, how do I bind the links in the sidebar on the same page? <script> $(function() { $( "#tabs" ).tabs(); }); /script> <div class="demo"> <div id="tabs"> <ul> <li><a href="#tabs-1">Nunc tincidunt</a></li> <li><a href="#tabs-2">Proin dolor</a></li> <li><a href="#tabs-3">Aenean lacinia</a></li> </ul> <div id="tabs-1"> <p>Proin elit arcu, rutrum commodo, vehicula tempus, commodo a, risus. Curabitur nec arcu. Donec sollicitudin mi sit amet mauris. Nam elementum quam ullamcorper ante. Etiam aliquet massa et lorem. Mauris dapibus lacus auctor risus. Aenean tempor ullamcorper leo. Vivamus sed magna quis ligula eleifend adipiscing. Duis orci. Aliquam sodales tortor vitae ipsum. Aliquam nulla. Duis aliquam molestie erat. Ut et mauris vel pede varius sollicitudin. Sed ut dolor nec orci tincidunt interdum. Phasellus ipsum. Nunc tristique tempus lectus.</p> </div> <div id="tabs-2"> <p>Morbi tincidunt, dui sit amet facilisis feugiat, odio metus gravida ante, ut pharetra massa metus id nunc. Duis scelerisque molestie turpis. Sed fringilla, massa eget luctus malesuada, metus eros molestie lectus, ut tempus eros massa ut dolor. Aenean aliquet fringilla sem. Suspendisse sed ligula in ligula suscipit aliquam. Praesent in eros vestibulum mi adipiscing adipiscing. Morbi facilisis. Curabitur ornare consequat nunc. Aenean vel metus. Ut posuere viverra nulla. Aliquam erat volutpat. Pellentesque convallis. Maecenas feugiat, tellus pellentesque pretium posuere, felis lorem euismod felis, eu ornare leo nisi vel felis. Mauris consectetur tortor et purus.</p> </div> <div id="tabs-3"> <p>Mauris eleifend est et turpis. Duis id erat. Suspendisse potenti. Aliquam vulputate, pede vel vehicula accumsan, mi neque rutrum erat, eu congue orci lorem eget lorem. Vestibulum non ante. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Fusce sodales. Quisque eu urna vel enim commodo pellentesque. Praesent eu risus hendrerit ligula tempus pretium. Curabitur lorem enim, pretium nec, feugiat nec, luctus a, lacus.</p> <p>Duis cursus. Maecenas ligula eros, blandit nec, pharetra at, semper at, magna. Nullam ac lacus. Nulla facilisi. Praesent viverra justo vitae neque. Praesent blandit adipiscing velit. Suspendisse potenti. Donec mattis, pede vel pharetra blandit, magna ligula faucibus eros, id euismod lacus dolor eget odio. Nam scelerisque. Donec non libero sed nulla mattis commodo. Ut sagittis. Donec nisi lectus, feugiat porttitor, tempor ac, tempor vitae, pede. Aenean vehicula velit eu tellus interdum rutrum. Maecenas commodo. Pellentesque nec elit. Fusce in lacus. Vivamus a libero vitae lectus hendrerit hendrerit.</p> </div> </div> </div> <div id="sidebar"> <a href="#tab-1" id="tab-1"><img src="image1.jpg" /></a> <a href="#tab-2" id="tab-2"><img src="image2.jpg" /></a> </div>

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• How do I check if a user is authenticated with NickServ using POE::Component::IRC::State in Perl?

  - by Troy

  I'm trying to test whether a user is registered on FreeNode. nick_info() doesn't seem to return information about this, so I want to use $irc-yield(whois = $nick); and then grab the irc_whois event's reply. The problem is that I want to wait until this event is fired, so I created a global variable $whois_result and wrote a sub like this: sub whois { my $nick = $_[0]; $whois_result = 0; $irc->yield(whois => $nick); while($whois_result == 0) { } return $whois_result; } with the irc_whois handler looking like: sub on_whois { $whois_result = $_[ARG0]; print "DEBUG: irc_whois fired.\n"; } Unfortunately, the event can't fire while the loop is running so this hangs. I'm sure there's a better way to do this, but I'm not familiar enough with this kind of programming to know. Any help would be greatly appreciated.

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• Possible loss of precision; extracting char from string

  - by Troy

  I am getting a string from the user and then doing some checking to make sure it is valid, here is the code I have been using; char digit= userInput.charAt(0) - '0'; This had been working fine until I did some work on another method, I went to compile and have been receiving a 'possible loss of precision' error since then. What am I doing wrong?

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• How to best future proof my application that needs to connect to Outlook?

  - by Troy

  I have a contact management application written in Delphi which has a “Sync with Outlook” feature that I developed 10 years ago. Now, I’m going back to add some features and fix some bugs. This sync feature uses the Outlook object model to get started, but it has an optional mode called “Use MAPI Enhancements” where it uses pure MAPI to speed up how it looks for changes, and it allows notes to be synced w/ RTF instead of just plain text. I'm wondering if supporting two parallel paths of execution is a good idea or not. If I went with all MAPI, I believe I'd avoid some security prompts, and I'd avoid situations where anti-virus has "script-blocking" features which block my app from connecting to Outlook. But I believe that on the down side, my 32-bit app would not be able to to connect with 64-bit Outlook 2010 using MAPI. And I wonder about the future of MAPI in general. If I stick with the Outlook object model, will my 32-bit app be able to connect to the Outlook object model (since it's out of process COM)? If so, this is a compelling reason to keep my Outlook object model execution path in place. But if not, and if my app needs to be compiled for x64, then why not just go with pure MAPI?

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• Can I use a class as an object in .NET to create instances of that class?

  - by Troy

  I'm writing a fairly uncomplicated program which can "connect" to several different types of data sources including text files and various databases. I've decided to implement each of these connection types as a class inherited from an interface I called iConnection. So, for example, I have TextConnection, MySQLConnection, &c... as classes. In another static class I've got a dictionary with human-readable names for these connections as keys. For the value of each dictionary entry, I want the class itself. That way, I can do things like: newConnection = new dict[connectionTypeString](); Is there a way to do something like this? I'm fairly new to C# so I'd appreciate any help.

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• how to open macbook camera and turn off led [closed]

  - by Troy

  who know how to open isight of the macbook and turn off led

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• C# Async call garbage collection

  - by Troy

  Hello. I am working on a Silverlight/WCF application and of course have numerous async calls throughout the Silverlight program. I was wondering on how is the best way to handle the creation of the client classes and subscribing. Specifically, if I subscribe to an event in a method, after it returns does it fall out of scope? internal MyClass { public void OnMyButtonClicked() { var wcfClient = new WcfClient(); wcfClient.SomeMethodFinished += OnMethodCompleted; wcfClient.SomeMethodAsync(); } private void OnMethodCompleted(object sender, EventArgs args) { //Do something with the result //After this method does the subscription to the event //fall out of scope for garbage collection? } } Will I run into problems if I call the function again and create another subscription? Thanks in advance to anyone who responds.

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• Java: Preventing array going out of bounds.

  - by Troy

  I'm working on a game of checkers, if you want to read more about you can view it here; http://minnie.tuhs.org/I2P/Assessment/assig2.html When I am doing my test to see if the player is able to get to a certain square on the grid (i.e. +1 +1, +1 -1 .etc) from it's current location, I get an java.lang.ArrayIndexOutOfBoundsException error. This is the code I am using to make the move; public static String makeMove(String move, int playerNumber) { // variables to contain the starting and destination coordinates, subtracting 1 to match array size int colStart = move.charAt(1) - FIRSTCOLREF - 1; int rowStart = move.charAt(0) - FIRSTROWREF - 1; int colEnd = move.charAt(4) - FIRSTCOLREF - 1; int rowEnd = move.charAt(3) - FIRSTROWREF - 1; // variable to contain which player is which char player, enemy; if (playerNumber==1) { player= WHITEPIECE; enemy= BLACKPIECE; } else { player= BLACKPIECE; enemy= WHITEPIECE; } // check that the starting square contains a player piece if (grid [ colStart ] [ rowStart ] == player) { // check that the player is making a diagonal move if (grid [ colEnd ] [ rowEnd ] == grid [ (colStart++) ] [ (rowEnd++) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart--) ] [ (rowEnd++) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart++) ] [ (rowEnd--) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart--) ] [ (rowEnd--) ]) { // check that the destination square is free if (grid [ colEnd ] [ rowEnd ] == BLANK) { grid [ colStart ] [ rowStart ] = BLANK; grid [ colEnd ] [ rowEnd ] = player; } } // check if player is jumping over a piece else if (grid [ colEnd ] [ rowEnd ] == grid [ (colStart+2) ] [ (rowEnd+2) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart-2) ] [ (rowEnd+2) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart+2) ] [ (rowEnd-2) ] && grid [ colEnd ] [ rowEnd ] == grid [ (colStart-2) ] [ (rowEnd-2) ]) { // check that the piece in between contains an enemy if ((grid [ (colStart++) ] [ (rowEnd++) ] == enemy ) && (grid [ (colStart--) ] [ (rowEnd++) ] == enemy ) && (grid [ (colStart++) ] [ (rowEnd--) ] == enemy ) && (grid [ (colStart--) ] [ (rowEnd--) ] == enemy )) { // check that the destination is free if (grid [ colEnd ] [ rowEnd ] == BLANK) { grid [ colStart ] [ rowStart ] = BLANK; grid [ colEnd ] [ rowEnd ] = player; } } } } I'm not sure how I can prevent the error from happening, what do you recommend?

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• Java: Checking contents of char variable with if condition

  - by Troy

  Hello, I have a char variable that is supposed to contain either a Y,y,n or N character, I want to test if it does not contain it, then display an error message and exit the program. This is the code I am using; if (userDecision != 'Y' || userDecision != 'y' || userDecision != 'n' || userDecision != 'N') { System.out.println("Error: invalid input entered for the interstate question"); System.exit(0); } Irregardless of what is in the variable it always returns true and executes the command to exit the program, what am I doing wrong?

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• Want to develop for Android. Have a few basic, non-FAQ questions

  - by Troy M

  Hi everyone, Recently myself and a small group of friends became interested in developing a game for a mobile platform. Originally we considered the iPhone but none of us use macs, so we decided Android would be a more realistic platform to use. Before we get started, I was hoping that I might find some answers to a couple questions so we don't waste our time if this project isn't feasible. Any help is appreciated! I can't seem to find out how many programming languages Android supports. Java is obvious, but what about C+? It seems that Android supports C and C++ through Eclipse, but is that it? (I'm not the programmer for the project which is why I'm asking this. He's comfortable in C+). Our game involves the use of two digital analog sticks (it's not a twin-stick shooter but it's a similar concept). It would seem that most Droid devices unfortunately don't use multi-touch though... Are there many devices out there right now which support this functionality and I'm just not seeing them, or should we possibly consider the development of a different game that would only use a single input? Assuming there's no snags following those first two questions, what would you consider the best screen resolution to develop in? It seems like there are a variety of resolutions out there right now and we can't decide which is the best to use. Again, any answers are appreciated!

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