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• .Net Windows Service to monitor mailbox

  - by Brent

  Hi there, I need to create a .Net windows service to monitor a mailbox and process attachments (if found) on the emails and then delete the email from the server. I have two questions I'd like your thoughts on: POP3 or IMAP to connect to the mail server? Which POP3/IMAP library should I use. At this stage we're just doing a proof of concept, so a free one would be my preference. Cheers!

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• Asp.net Report Viewer - Custom filter parameters

  - by Chris

  Hi all, for a data warehouse project I need to know about some best practices regarding custom report viewer filters/parameters. Usually I use the standard parameter feature for reports, like multiple select boxes, check boxes, text boxes etc.. But for the current project some reports require more complex report parameters. E.g. a user wants to analyze some measures. For that the user needs to set a filter on a specific address. There are over 100.000 address to choose from, so he has to have the ability to search for an address (full text). Since such features cannot be done with the standard parameters, I will have to create custom params within a ASPX page which are then passed to the report viewer control. So my question is: Are there any best practices on how to create custom parameters? Did anyone had similar problems, if so, how did you solve it?

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• How to get Amazon s3 PHP SDK working?

  - by JakeRow123

  I'm trying to set up s3 for the first time and trying to run the sample file that comes with the PHP sdk that creates a bucket and attempts to upload some demo files to it. But this is the error I am getting: The difference between the request time and the current time is too large. I read on another question on SO that this is because Amazon determines a valid request by comparing the times between the server and the client, that the 2 must be within a 15 min span of one another. Now here is the problem. My laptop's time is 12:30AM June 8, 2012 at the moment. On my server I created a file called servertime.php and placed this code in that file: <?php print strftime('%c'); ?> and the output is: Fri Jun 8 00:31:22 2012 It looks like the day is correct but I don't know what to make of 00:31:22. In any case, how is it possible to always make sure the time between the client and server is within a 15 minute window of one another. What if I have a user in China who wishes to upload a file on my site which uses s3 for the cdn. Then the time difference would be over a day. How can I make sure all my user's times are within 15 minutes of my server time? What if the user is in the U.S. but the time on their machine is misconfigured. Basically how to get s3 bucket creation and upload to work?

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• Is there a built-in class to handle encryption in C#?

  - by badpanda

  I need to encrypt bytecode to send over a connection to a webservice, preferably using a GUID as a key. I have done a bit of research and found several classes developed for a similar purpose, but haven't been able to turn up much that is built into the Windows libraries. My question is: Is there something built in to C# that performs this task? If there is not, I would very much appreciate any suggestions as to implementation. Thanks!! badPanda

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• how to POST two strings?

  - by Garrith

  Im trying to create a POST method for my AddTagtoGroup which looks like this (altho still confused as string group never seems to be used): List<Group> Groups = new List<Group>(); List<Tag> tags = new List<Tag>(); public void AddTagtoGroup(string group, string tag) { var result = Groups.Where(n => String.Equals(n.GroupName, tag)).FirstOrDefault(); if (result != null) { result.Tags.Add(new Tag() { TagName = tag }); } } My data contracts looks like this: [DataContract(Name = "Group")] public class Group { public Group() // not sure if this has to have a datamember { Tags = new List<Tag>(); } [DataMember(Name = "GroupName")] public string GroupName { get; set; } public List<Tag> Tags { get; set; } // datamember or not? } [DataContract(Name = "Tag")] public class Tag { [DataMember(Name = "TagName")] public string TagName { get; set; } } And my post method looks like this but im unsure what to put in the uri template? [OperationContract] [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Bare, RequestFormat = WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Xml, UriTemplate = "/AddTagtoGroup{group}{tag}")] void AddTagtoGroup(string group, string tag);

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• How do I upload a file, process it and return a result file in a single request to a REST WCF service?

  - by sharptooth

  I need to implement the following scenario in a REST service implemented in WCF: the user submits a binary file and a set of parameters the server consumes the file, does some clever work and generates a binary output file the user retrieves that binary result file and all that is done in a single operation from the client perspective. It's pretty easy in a non-REST service. How do I do that in a REST service? Where do I get started?

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• help me understand the method Validator.TryValidateObject()

  - by Benny

  this is the method definition: public static bool TryValidateObject( Object instance, ValidationContext validationContext, ICollection<ValidationResult> validationResults, bool validateAllProperties ) what i am confused is the validateAllProperties parameter, I understand when it is true-validate all properties. What about when it is false, not validate all properties, but which property will be validated?

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• Call .NET Webservice with Android

  - by Lasse P

  Hi, I know this question has been asked here before, but I don't think those answers were adequate for my needs. We have a SOAP webservice that is used for an iPhone application, but it is possible that we need an Android specific version or a proxy of the service, so we have the option to go with either SOAP or JSON. I have a few concerns about both methods: SOAP solution: Is it possible to generate java source code from a WSDL file, if so, will it include some kind of proxy class to invoke the webservice and will it work in the Android environment at all? Google has not provided any SOAP library in Android, so i need to use 3rd party, any suggestion? What about the performance/overhead with parsing and transmitting SOAP xml over the wire versus the JSON solution? JSON solution: There is a few classes in the Android sdk that will let me parse JSON, but does it support generic parsing, like if I want the result to be parsed as a complex type? Or would I need to implement that myself? I have read about 2 libraries before here on Stackoverflow, GSON an Jackson. What is the difference performance and usability (from a developers perspective) wise? Do you guys have any experince with either of those libraries? So i guess the big question is, what method to go with? I hope you can help me out. Thanks in advance :-)

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• Letting Wcf data service implement another contract

  - by Wasim

  Hi all , I have a wcf data service with the standart configuration . I want to add another functionality to it , so I built a contract interface and let my wcf data service implements it . Now I see in the service the InitializeService method , and the contract interface methods . When I come to connect the service , I get an error , that there is no end point declared to the contract I added . How can do that ? examples ? links ? I choosed to add the contract interface to the wcf data service and not adding another service , because the client application uses the wcf data service generated objects , and I want to use the same obkject to make operations not related to data , for more coplex processing . If I do the methods in another service , then I have types incompatibility . Thanks in advance ...

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• Java Webservice with generic methods

  - by danby

  Hi, I was wondering if it is possible to make a generic webservice method in java like this: @WebMethod public <T extends Foo> void testGeneric(T data){ However when I try to consume this with a Java client I get an error stating: [ERROR] Schema descriptor {http://####/}testGeneric in message part "parameters" is not defined and could not be bound to Java. I know it is possible to make a method that takes a parameter such as List and this generates correctly using JAX-WS. I don't mind if there is a solution that means I am tied to using only a particular technology. Thanks, Dan.

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• Lookup function not working (RS SP2)

  - by Al Reyes

  Hi, I made the upgrade to SP2. I'm trying to use the Lookup function to link data from two different servers. I'm trying first a simple exercise linking data from two datasets from the same server, having one dataset with journals and the other with the account description. My Expression looks like this at a field on the table I have: =Lookup(Fields!ACTINDX.Value,Fields!ACTINDX.Value,Fields!ACTDESCR.Value,"ACCTINFO") I made sure of the names and using only uppercases for datasets and fields but I'm receiving the following message when I try to preview: "An error occurred during local report processing. The definition of the report '/DETAIL' is invalid. The Value expression for the text box 'ACTINDX' refers to the field 'ACTDESCR'. Report item expressions can only refer to fields within the current dataset scope or, if inside an aggregate, the specified dataset scope". I'll appreciate any suggestions. Regards, Al

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• Pass parameters to Windows Service to fire method

  - by Sam Youtsey

  Hi there, I'm attempting to build a Windows Service which will execute some method when a user clicks a button in a WinForms application. I'd like to be able to pass in a few strings when the user presses the GUI button which will have the service consume them and processes a specific method. What's the best way to do this? Thanks for help.

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• How to expose a function that takes two input files as a REST resource?

  - by dafmetal

  I need to expose a function, let's say compute that takes two input files: a plan file and a system file. The compute function uses to system file to see whether the plan in the plan file can be executed or not. It produces an output file containing the result of this check including recommendations for the plan. I need to expose this functionality in a REST architecture and have no influence on the compute function itself (it is being developed by another organization). I can control the interface through which it is accessed. What would be a recommended way to expose this functionality in a REST architecture?

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• How i can send an HttpRequest from C++

  - by Dennis

  Im using DataServices and OData protocol, i need to generate Get, Post, Delete, and Update from a c++ aplication. how i can do this? the easiest way ??

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• C# modify a config file for a windows service

  - by Jim Beam

  I have a windows service that reads from a config file. I need to modify this config file prior to the application starting. How can I create a GUI that would handle the changes to the config file. I know that a service does not have a GUI per se, but I really just need something to modify some strings in the config file and then start the service.

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• When to use @Singleton in a Jersey resource

  - by dexter

  I have a Jersey resource that access the database. Basically it opens a database connection in the initialization of the resource. Performs queries on the resource's methods. I have observed that when I do not use @Singleton, the database is being open at each request. And we know opening a connection is really expensive right? So my question is, should I specify that the resource be singleton or is it really better to keep it at per request especially when the resource is connecting to the database? My resource code looks like this: //Use @Singleton here or not? @Path(/myservice/) public class MyResource { private ResponseGenerator responser; private Log logger = LogFactory.getLog(MyResource.class); public MyResource() { responser = new ResponseGenerator(); } @GET @Path("/clients") public String getClients() { logger.info("GETTING LIST OF CLIENTS"); return responser.returnClients(); } ... // some more methods ... } And I connect to the database using a code similar to this: public class ResponseGenerator { private Connection conn; private PreparedStatement prepStmt; private ResultSet rs; public ResponseGenerator(){ Class.forName("org.h2.Driver"); conn = DriverManager.getConnection("jdbc:h2:testdb"); } public String returnClients(){ String result; try{ prepStmt = conn.prepareStatement("SELECT * FROM hosts"); rs = prepStmt.executeQuery(); ... //do some processing here ... } catch (SQLException se){ logger.warn("Some message"); } finally { rs.close(); prepStmt.close(); // should I also close the connection here (in every method) if I stick to per request // and add getting of connection at the start of every method // conn.close(); } return result } ... // some more methods ... } Some comments on best practices for the code will also be helpful.

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• ReportParameterValueNotSetException in SSRS subscription

  - by soldieraman

  I am not getting this error locally in VS 2005 or when running the report through the preview but during subscription I start getting ReportParameterValueNotSetException even though all my parameters especially the one it's complaining about is set this has started happening all of a sudden and has been working great before. Any ideas why this might have happened

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• Software usage analytics in C#

  - by TiernanO

  I have a project i am working on currently and would like to implement some sort of software tracking in the code. ideally, stuff like how often its launched. how long it runs for, feature tracking, etc. I already use Exceptioneer for unhandled exceptions, but would like something similar for usage tracking. this data should all be anonymous and ideally run as a service by someone else. and i would like to give the users the option to turn it off, if they so wish to... So, is this something i should implement myself, or are there third parties out there that do this sort of things? i know it might be a sticky area, but i have seen stats about iPhone app usage. they do it, so why cant we? (if the user agrees, of course) [Update] Based on the comments, i should have been more clear. this is a Winforms .NET 4. application, though i am thinking of updating it later with WCF. i would only be tracking my own application, though i would also want to know minor information about environment (Windows OS Version, SP, maybe proc and ram...)

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• How to listen for events on postbin and get the values out of it?

  - by Xaisoft

  I am testing out webhooks and I created a postbin test url and I am trying to create a webservice that would listen to the postbin url and be able to get the values out of the post, but I am not sure how to do this: My sample postbin url could be http://www.postbin.org/abcdef

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• Using XmlSerializers.dll

  - by Erup

  I know the .XmlSerializers.dll generated, is usefull to improve the startup performance of a XmlSerializer when it serializes or deserializes objects. But how clients can use this assembly?

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• maximum length of HTTP GET request?

  - by Mark Harrison

  What's the maximum length of an HTTP GET request? Is there a response error defined that the server can/should return if it receives a GET request exceeds this length?

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• Show a message box from a Windows Service

  - by Jonn

  Can you display a message box (or any form of notification) from a windows service? Can't get it to work. I used: global::System.Windows.Forms.MessageBox.Show("A fatal error occurred. " + ServiceName + " is now terminating."); but it didn't work and just produced an error.

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• Structure for Django methods that span different models

  - by Duncan

  I have two models (say A and B) which are independent and have independent methods. I want to add some methods that operate on both models though. for example, addX() will create an object from both models A and B. What's the best way to structure code in this situation, since it doesnt make sense to have the method belong to either of the models methods. Is the standard to write a service for the kind of 'abstract' model?

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• Request a Windows Phone 7.5 Location

  - by Christopher Cabezudo Rodriguez

  I am trying to track 5 windows phone 7.5 for a experiment and I have try using an app (that I am developing for that experiment) but the app must be active and that's not possible for all readings, I was looking online and I find something similar that Microsoft has done with the find my phone service, https://www.windowsphone.com/en-US/find Anyone knows how can i call that service outside the website or any other way to accomplish this task i need GEO position every 15 min

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• Is Amazon SQS the right choice here? Rails performance issue.

  - by ole_berlin

  I'm close to releasing a rails app with the common networking features (messaging, wall, etc.). I want to use some kind of background processing (most likely Bj) for off-loading tasks from the request/response cycle. This would happen when users invite friends via email to join and for email notifications. I'm not sure if I should just drop these invites and notifications in my Database, using a model and then just process it with a worker process every x minutes or if I should go for Amazon SQS, storing the messages and invites there and let my worker retrieve it from Amazon SQS for processing (sending the invites / notifications). The Amazon approach would get load off my Database but I guess it is slower to retrieve messages from there. What do you think?

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