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• Cost effective online consumer surveys / panels?

  - by Ed

  I am building a Windows based software targeted at consumers, and while I think it's awesome, I'm not sure if my potential customers will. I would like to do some market research to make sure I'm on the right track with the feature set. Unfortunately, I don't have the budget for a large sample size. I understand that I won't be able to get anything near statistical significance on the cheap, but some feedback is better than no feedback I figure. Are there any inexpensive resources for surveying a panel of 100-200 consumers? Thanks!

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• Verifying the purchaser of an App Store application

  - by Keldi

  Is there a way for the developer of an App Store application to tie a sale to an individual user/device ID/Apple account? In other words, a method for the developer to double-check that a specific user has legally purchased the software? I haven't been able to find a reliable answer to this yet. I'm not looking for specific code examples, just some sort of idea as to how possible (or difficult) this is. My intent isn't to penalize piracy; it's to be able to provide additional benefits to paid customers. As such, I'm not looking for a way to identify a cracked or pirated version, which I gather has already been solved. Thanks in advance for any help you can provide!

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• How to keep an old VB6 application running in Windows Vista and Windows 7?

  - by MusiGenesis

  I have an old VB6 app which I'm still trying to support. A few users have reported weird crashes when running the app in Vista or Windows 7. The log files don't show anything after one of these crashes, but the customers report that the error message said "OLE something ...", if they saw anything at all. I've never been able to reproduce these crashes while running the program on my own Vista or Windows 7 boxes, so I have essentially no information on what the problem is. My suspicion is that it's a problem with their versions of one or more of the umpteen billion DLLs that a VB6 application is dependent on. The app also uses lame_enc.dll, which introduces a few more dependencies. I'm guessing this is a common problem with VB6 apps (although it's possible that I just sucked as a programmer 10 years ago). Is there some magical installer/updater out there that makes sure all the VB6 dependencies are what they need to be for a VB6 app to function properly?

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• product suggestion based on user data

  - by Enkay

  I'm trying to add suggestions to product pages along the lines of : "Customers who purchased this item also purchased x and y". The way the data is compiled right now is a mysql table with 3 rows. PRODUCT | CUSTOMER |QUANTITY Product is the product ID. Customer is the customer ID. Quantity is the number of time that product was bought by that customer. For each product description page, the system needs to figure out which users bought that product, what other products those users bought, in what quantity and then return the 2 products that were bought the most by people who bought the current product. Hopefully this makes sense and someone can point me in the right directions as to what the mysql query should look like. Thanks.

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• LINQ to Objects .Distinct() not pulling distinct objects

  - by Anthony Potts

  I have two ways that I am doing a fuzzy search for a customer. One is by an abbreviated name and the other is by the customers full name. When I take these two and then union them together (which I have read several places should remove distinct values) I get duplicates. Thinking that all I need to do is then call the .Distinct() method on this I also still get Duplicates. Do I need to implement some compare functionality in my customer object? My code: Dim shortNameMatch As List(Of ICustomer) = CustomerLibrary.GetCustomersByShortName(term) Dim custNameMatch As List(Of ICustomer) = CustomerLibrary.GetCustomersByCustName(term) Dim allMatch = (From a In (From s In shortNameMatch Select s).Union(From c In custNameMatch Select c) Select a).Distinct()

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• Exception design: Custom exceptions reading data from file?

  - by User

  I have a method that reads data from a comma separated text file and constructs a list of entity objects, let's say customers. So it reads for example, Name Age Weight Then I take these data objects and pass them to a business layer that saves them to a database. Now the data in this file might be invalid, so I'm trying to figure out the best error handling design. For example, the text file might have character data in the Age field. Now my question is, should I throw an exception such as InvalidAgeException from the method reading the file data? And suppose there is length restriction on the Name field, so if the length is greater than max characters do I throw a NameTooLongException or just an InvalidNameException, or do I just accept it and wait until the business layer gets a hold of it and throw exceptions from there? (If you can point me to a good resource that would be good too)

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• How to add rows in middle of a table with jQuery?

  - by understack

  I've a table which has customers names along with the products they purchased with their prices. So there are multiple records for each customer. This table is simple 3 column table : name, product and price. What I wanna do is: Put all records belonging to one customer together (I've done it) and just after these rows add one new extra row which would just show total price of all the products each customer has purchased. This row would have empty cell in name and product column. And would have total in price column.

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• How to get contents of Amazon shopping cart?

  - by Andrew Whitehouse

  I've been investigating whether it's possible to get a list of the saved items in my Amazon shopping basket programmatically ... Their Product Advertising API has methods for getting wishlists: http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?FindingItemsonLists.html and working with remote shopping carts: http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?CHAP_WorkingWithRemoteShoppingCarts.html but the shopping cart of items stored while on the Amazon web site is treated as a local shopping cart, and therefore is not accessible through the Product Advertising API. According to the last link: The opposite of a remote shopping cart is a local shopping cart, which is the shopping cart customers use while shopping on www.amazon.com. It is considered local because Amazon hosts the shopping web pages as well as the shopping cart. Product Advertising API operations work solely with remote shopping carts. Has anyone found a way of getting the contents of the "local" cart, apart from scraping the HTML? Thanks.

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• What happens when you run out of ram with mlockall set?

  - by James Dean

  I am working on a C++ application that requires a large amounts of memory for a batch run. ( 20gb) Some of my customers are running into memory limits where sometimes the OS starts swapping and the total run time doubles or worse. I have read that I can use the mlockall to keep the process from being swapped out. What would happen when the process memory requirements approaches or exceeds the the available physical memory in this way? I guess the answer might be OS specific so please list the OS in your answer.

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• Create an application that will expire after a trial period.

  - by robUK

  Hello, C# 2008 SP1 I am writing an application that I want to give to a select number of customers. What is the best solution to use so that after the trail period (1 month) the application will no longer work. I was thinking that if they are interested in purchasing the software I will give them a license key or something, to unlock the application. I am have a very limited budget as I am working on my own. So is there any free 3rd party products that does this? Many thanks for any advice,

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• Visual C# 2010 express... displaying console output??

  - by ClarkeyBoy

  Hi, I am currently creating a customer application for a local company. I have a datagridview linked to the customers table, and I am trying to link it up so that updates, inserts and deletions are handled correctly. I am very new to c# so I am starting with the basics (like about 2 days ago I knew nothing - I know vb.net, Java and several other languages though..). Anywho from what I understand anything output through Debug.WriteLine should only appear when in debug mode (common sense really) but anything output through Concole.WriteLine should appear whether or not in debug mode. However I have checked the immediate and output windows and nothing is being output when in normal mode. Does anyone have any idea why this is?? Thanks in advance, Richard

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• Is adding indexes to a SQL Server ever a bad idea?

  - by Aerik

  We have a mid-size SQL Server based application that has no indexes defined. Not even on the the identity columns. I suggested to our moderately expensive application consultant that perhaps we might get better performance (particularly as our database grows) by creating some indexes on appropriate fields, and he said: "Indexes will significantly impact other areas of the application and customers should not create them under any circumstances." Anybody ever heard of anything like this? Are there ever circumstances where one should not create any indexes? I can see nothing special about this app - it's got int identity columns, then lots of string columns, bunch of relational tables but nothing special or weird that I can see. Thanks!

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• Rails: Polymorphic User Table a good idea with AuthLogic?

  - by sscirrus

  Hi everyone, I have a system where I need to login three user types: customers, companies, and vendors from one login form on the home page. I have created one User table that works according to AuthLogic's example app at http://github.com/binarylogic/authlogic_example. I have added a field called "User Type" that currently contains either 'Customer', 'Company', or 'Vendor'. Note: each user type contains many disparate fields so I'm not sure if Single Table Inheritance is the best way to go (would welcome corrections if this conclusion is invalid). Is this a polymorphic association where each of the three types is 'tagged' with a User record? How should my models look so I have the right relationships between my User table and my user types Customer, Company, Vendor? Thanks very much!

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• How to keep a process running on a remote windows server

  - by DutrowLLC

  I need to implement a background process that runs on a remote windows server 24/7. My development environment is C#/ASP.NET 3.5. The purpose of the process is to: Send reminder e-mails to employees and customers at appropriate times (say 5:00PM on the day before a job is scheduled) Query and save GPS coordinates of employees when they are supposed to be out on jobs so that I can later verify that their positions were where they were supposed to be. If the process fails (which it probably will, especially when updates are added), I need for it to be restarted immediately (or within just a few minutes) as I would have very serious problems if this process failed to send a notification, log a GPS coordinate, or any of the other tasks its meant to perform.

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• What do I have to do and how much does it cost to get a device driver for Windows Vista / 7 (32 and

  - by Jon Cage

  I've got some drivers which are basically LibUSB-Win32 with a new .inf file do describe product/vendor ids and strings which describe my hardware. This works fine for 32 bit windows, but 64 bit versions have problems; namely that Microsoft in their wisdom require all drivers to be digitally signed. So my questions are thus: Is there a version of the LibUSB-Win32 drivers which are already signed I could use? If there aren't already some signed ones I can canibalise, what exactly do I have to do to get my drivers signed. Do I need to get 64 and 32 bit versions signed separately and will this cost more? Is this a free alternative to getting them signed? Are there any other options I should consider besides requiring that my customers boot into test mode each time they start their machines (not an option I'd consider).

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• Multiple merchant accounts with Activemerchant gem.

  - by sosborn

  I am developing a rails site that will allow a group of merchants (5 - 10) to accept credit card orders online. I plan on using the Activemerchant gem to handle the processing. In this case, each merchant will have their own merchant accounts to handle the payments. Storing banking information like that is not something I am a fan of. This could be solved by queing orders and allowing the merchant to log in to the site, input their credentials and process the order. However, if I go that route then it seems to me that I would have to store the customers' credit card information temporarily until the merchant has the opportunity to log in and process the order, which to me is the greater evil. Has anyone dealt with this situation? If so, what are the options available and what pitfalls should I look out for? In my mind, security customer credit card information is priority number one with the merchant account information a close second.

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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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• How do I create a reusable WF sequential workflow?

  - by djgiard

  I have two customers that have the same workflow (Create file -transport file - wait for response - send response to internal team); however the implementation of each step is different for each customer. For example, one customer requires a flat file to be sent via SFTP, while the other customer requires an XML file to be sent via FTP. I'd like to create a sequential workflow, using Microsoft Workflow Foundation (WF) and reuse this workflow for multiple vendors. Each action's call to an external module can use the same interface, but a different concrete implementation. However, I'm unfamiliar with WF and I'm not sure how to implement this. Can someone point me to the proper way to use this pattern? Will it make a difference whether I choose WF 3.5 or WF 4.0? Thank you.

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• SSRS: Report label position dynamic

  - by Nauman

  I have a report which displays customer address in multiple labels. My customers use windowed envelopes for mailing. I need the address labels position to be configurable. Something like, I'll have a database table which stores the Top/Left position of each label per customer. Based on this table, I need to position the address labels on my report. I thought, it is doable by expressions, but Location property doesn't provides ability to set an expression and make the label's top and left dynamic. Anybody, any ideas, on how to achieve this?

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• Agile and code release

  - by ring bearer

  Do you know of any agile process that is created for code releases? One of the main theme of agile is frequent releases and each company/client would have their own test/approval processes that control code releases. Most of the time these slow down the pace of "frequent releases" Currently we have a proprietary tool based workflow. The team who needs a code promotion needs to create a promotion request to one of the final UAT servers. Once this is complete, and once tests are done, certain customers, technical/non-technical managers need to approve, then it goes in to production deploy stage. Meanwhile no sprint planning meeting or anything of that sort. What is the code release process (Which is agile) that has worked for you?

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• Specification of Extended Properties in OleDb connection string?

  - by Monty

  At the moment I'm searching for properties for a connection string, which can be used to connect to an Excel file in readonly mode. Searching Google gets me a lot of examples of connection strings, but I can't seem to find a specification of all possibilities in the 'Extended Properties' section of the OleDb connection string. At the moment I've this: Provider = Microsoft.Jet.OLEDB.4.0; Data Source = D:\Data\Customers.xls; Extended Properties = 'Excel 8.0; Mode=Read; ReadOnly=true; HDR=Yes'; However... I've composed this by examples. So questions: 1. What is a decent source for OleDb Connection String documentation/reference? 2. Is the above connection string indeed connecting to the Excel file in readonly mode? Thanks!

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• What to implement today to help yourself fixing bugs in the future?

  - by Heinrich Ulbricht

  Assume you are in the process of developing some really cool software. It will be deployed to a lot of customers. They will need this software and they will use it in time-critical situations. So if something goes wrong they will call (you). And you or your team will be the ones who have to resolve the issue. Fast. You know out of experience this will happen. Now if you could decide what to implement to aid your future self - what would that be?

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• Custom Grails Environments?

  - by tinny

  I have been developing several Grails applications over the past couple of years. I am increasingly finding that the three grails environments (dev, test, prod) aren't enough to satisfy my needs. The more "enterprisey" your application gets, the more environments you tend to have. I tend to use 6 environments for my development cycle... DEVA //My dev DEVB //Team mates dev CI_TEST //CI like Hudson QA_TEST //Testing team environment UAT_TEST //Customers testing environment PROD //Production Im wondering if there is a way to define custom Grails environments? I dont think there is, but the feature could be handy. The way I am getting around this right now is by externalising the config to a properties file. Id imagine that this is a pretty common requirement, so how have you been dealing with your environments?

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• OpenDACS .Net Framework

  - by Goober

  Scenario As some of you may have heard, OpenDACS is an open source data-access control system for enforcing data usage permissions. DACS comes integrated with the Reuters platform but you can use OpenDACS for extending third-party software. I'm using IE6, I can't embed these links properly. http://thomsonreuters.com/products_services/financial/financial_products/real-time/data_access_control_system https://customers.reuters.com/developer/Kits/OpenDACS/opendacs.aspx Question Has anyone used OpenDACS at all? I'm quite interested in it but I have no idea where to start. Ideally some examples would be fantastic, or a startup guide. Thoughts I use C# heavily and am looking to extend a C# application with DACS. I understand that there is currently no C# API, however I've heard that the SFC-COM Edition can used with the .Net/COM interoperability layer Help greatly appreciated. Cheers.

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• what the true nature of @ in Transct-SQL

  - by Richard77

  Hello, I reading some old ScottGu's blogs on Linq2SQL. Now I'm doing the SPROC part. I'd like to know what's the exact meaning of @variable. See this from ScottGu's Blog ALTER PROCEDURE dbo.GetCustomersDetails ( @customerID nchar(5), @companyName nvarchar(40) output ) AS SELECT @companyName = CompanyName FROM Customers WHERE CustomerID = @customerID SELECT * FROM Orders WHERE CustomerID = @customerID ORDER BY OrderID I'm kind of lost as, so far, I've though of anything preceded by a '@' as a placeholder for user input. But, in the example above, it looks like '@companyName' is used as a regular variable like in C# for instance (SELECT @companyName = ...). But, @companyName is not known yet. So, what the true nature a something preceded by a '@' like above? a vriable? a simple placeholder to accommodate user entered value? Thanks for helping

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