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• Best practices for sending automated daily emails from web service

  - by Tauren

  I am running a web service that currently sends confirmation emails out to new users via the gmail smtp servers. As I'm only getting a few new users each day, this hasn't been a problem. I've recently added new features to the webapp that will require a customized message to be sent out to each user every day. Think of this as similar to the regular messages LinkedIn sends out that give you a status report on the activity in your network. Every user's message will be different. With thousands of users, this means thousands of unique messages will be sent each day. Edit: I've since found that these types of email are called "transactional or relationship messages". Spamtacular has a good article on differentiating between marketing and transactional email. I don't think using gmail's smtp servers will cut it anymore, but I don't know that for sure. I don't know what gmail's maximum outgoing messages per account is (it might be 100/day), but they limit outgoing mail to 500 recipients per message. I'm not sending a single message to 500 recipients, but I'm going to be sending 1000's of customized messages with each recipient getting one per day. I'm interested to learn any best practices for doing this (especially for Java-based webapps). Here are some of my thoughts and concerns on it: Should I set up my own outgoing mail server? If I do this, it seems like I'll have all sorts of other issues to worry about, such as preventing mail server abuse, monitoring bounces, allowing ways to opt-out of emails, etc. Are there any tools or services to help with this? Maybe something like OpenEMM or a services like MailChimp? But those seem focused more toward email marketing campaigns. I don't think I should have the webapp itself handle sending emails as it currently is for new user signups. I'm thinking I should setup a separate messaging server that can access the same backend/datastore as the webapp. Thoughts on this? Should I consider setting up some sort of message queueing service to help with this, such as JMS, RabbitMQ, ActiveMQ, etc.? Do I need to provide users a way to opt-out? Do I need to flag these as bulk messages? I don't really consider these email marketing messages, but I'm unsure what is considered appropriate or proper netiquette. Any advice is appreciated. I'm also very interested in open source tools or web services that simplify things and could help me to ramp up as quickly as possible. Thanks!

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• Web Development: Which browsers are recommend to be used for web developers?

  - by eibhrum

  Hi, I need your opinion about this one. Which browsers (well, the best, at least) do you recommend for web developers to use?

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• Find an asp:Button in VB.NET

  - by Andrew

  I'm trying to code a section for my website in VB but VB can't seem to find a button. Is there a way for the code to find it? I know where it is. Loginview Login LoginTemplate. How do I get VB.NET to point to that location?

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• How can I select the pixels from an image in opencv?

  - by ajith

  This is refined version of my previous question. Actually I want to do following operation... summation for all k|(i,j)?wk [(Ii-µk)*(Ij-µk)], where wk is a 3X3 window, µk is the mean of wk, Ii & Ij are the intensities of the image at i and j. I dont know how to select Ii & Ij separately from an image which is 2 dimensional[Iij]...or does the equation mean anything else?

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• Visual Studio Web Setup Project - deploy outside of web root (wwwroot)

  - by TheZenker

  I am working with Visual Studio setup projects to install web application. I am looking for a way to change the default physical file installation path. The end result I would like is a Virtual Directory called "MySite" that points to a local path on the server like "C:\Apps\MySite" Is there a built-in option to customize this?

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• how to create a thumbnail image with embedded video code

  - by Fero

  Hi all, How to create a thumbnail image with embedded video code. For example i am having the following embedded code: Now i need to display the thumbnail image of this video and while clicking on that thumbnail image the corresponding video must play. Now, My Prob is "HOW TO CREATE A THUMBNAIL IMAGE OF AN EMBEDDED VIDEO CODE" thanks in advance

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• Entity Date Modelset Generates Errors in Visual Web Developer

  - by davemackey

  I attempted to add a ADO.NET Entity Data Model to my Visual Web Developer 2010 Express project and it generates but returns a whole slew of errors. Why is this generating errors? Here are the main errors: 'Public Property ID As Integer' has multiple definitions with identical signatures. Method 'Onaddress_IDChanging' cannot be declared 'Partial' because only one method 'Onaddress_IDChanging' can be marked 'Partial'. '_line1' is already declared as 'Private _line1 As String' in this class.

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• FormView templates break when refactored to Master/Content

  - by ZaijiaN

  Let's say I have an abstract class IA, with subclasses A1, A2, A3. For each subclass, I had a page with a FormView to insert/edit/view, with code specific to that class. The templates for insert/edit/view are all very similar, so it was mostly cut & paste, and the compiler had no problem that there were controls with the same IDs in the different templates. Something like this: <asp:FormView> <InsertItemTemplate> <asp:Label id="Label1" /> </InsertItemTemplate> <EditItemTemplate> <asp:Label id="Label1" /> </EdittItemTemplate> </asp:FormView> Much of the code/markup ended up being redundant across the pages, so I refactored it to use a master/content format, with the master page having content placeholders for the insert/edit/view templates. Master page: <asp:FormView> <InsertItemTemplate> <asp:ContentPlaceHolder ID="InsertItemTemplate"></asp:ContentPlaceHolder> </InsertItemTemplate> <EditItemTemplate> <asp:ContentPlaceHolder ID="EditItemTemplate"></asp:ContentPlaceHolder> </EdittItemTemplate> </asp:FormView> And content page: <asp:Content ContentPlaceHolderID="InsertItemTemplate"> <asp:Label id="Label1" /> </asp:Content> <asp:Content ContentPlaceHolderID="EditItemTemplate"> <asp:Label id="Label1" /> </asp:Content> In the content page templates, I'm doing the exact same thing I was doing before I refactored, but now the compiler is blowing up with the error BC30260: 'Label1' is already declared as 'Protected WithEvents Label1 As System.Web.UI.WebControls.Label' in this class. For some reason, it's not separating the controls in the content blocks the same way it did when they were in the templates, even though the content placeholders are in the individual templates. Is there a way around this, other than to rename all my controls?

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• strange error with upload files in asp.net mvc

  - by user276640

  i using upload form like this using (Html.BeginForm("FilesAdd", "Admin", null, FormMethod.Post, new { enctype = "multipart/form-data" })) it uploads files success except for mp3 files, i can't understand why?i use build web server in visual studio 2008

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• how to ignore already checked checkboxes in vb.net / asp.net ?

  - by user559800

  If i have 3 asp.net checkboxes in my asp.net webform namely : CheckBox1, Checkbox2, Checkbox3 and a textbox namely textbox1 If Checkbox1.text ="1" Checkbox2.text ="2" Checkbox3.text ="3" I WANT : if checkbox1 is already checked ... if checkbox is remain checked and even after i check checkbox2 and checkbox3 then the output in textbox would be 2,3 ..... by ignoring already checked checkbox text ... LOGIC I WANT : Ignore already check checkboxes and insert recent checkbox text to textbox1 as comma seperated string ... How to do that ?

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• Stateful EJBs in web application?

  - by Sebastien Lorber

  Hello I never used stateful EJBs. I understand that a stateful EJB can be useful with a java client. But i wonder: in which case to use them on a web application? And how? Should we put these stateful beans in Session (because of stateless http)? Is it a good practice? (without debating too much about stateful vs stateless)

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• Problem when creating Web Service

  - by Polaris

  I am using Visual Studio 2008 SP1 and framework 3.5 sp1 on Windows XP sp3. I have Java service which I consume in my .NET application. When attemp to add web service I get next error: The operation could not be complited.An attempt was made to load a program with an incorrect format But on another machine everything works fine. There is not any error in Java service. I think error in VS. Is anybody have seen this error before?

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• Asp.net library to extract plain text from docx, pptx, xlsx (for search index)

  - by Myster

  Is there a pre-existing library to extract plain text form docx, pptx, and xlsx files? I require this to populate a lucene.net index. I've found this example which extracts text from docx and it seems to work ok. But before building my own solution based on this I was wondering if there's something already available for the other file formats?

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• technologies beside scaling web applications in a distributed nature

  - by wik

  Hello, I am interested in theory to scale web applications in a distributed nature, i.e. when there is some platform/stack can be extended by others applications running on different servers, etc. I am researching this field and feels the lack of the right keywords :) Interesting concepts found so far: opensocial through API, like shopify does (shopify it's a hosted ecommerce solution) semantic web not quite sure about this one Am I on the right way or am I lost anything? :) Thanks.

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• Making a Web Gui to design a Garden Layout

  - by paddydub

  I would like to design a web page Gui where users can design a simple interactive garden. The user would pick a template design and receive price estimates based on the design template and the dimensions entered. I'd like the user to be able to move items such as plants, stones and be able to adjust the dimensions of the grass, paving. I'm thinking i could make it using flash but I would like to know there are any other ways I could use to implement this?

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• Setting debug=false in web.config as part of build

  - by Cherian

  Is it possible to instruct the aspnet_compiler to set debug=false in the web.config? My intention is to automate this as part of the nant build process. I am open to suggestions other than xml parsing

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• Does the XSP2 web server always uses Mono?

  - by Jader Dias

  I am not sure if XSP2 is using mono or .NET in my Windows box. How can I be sure?

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• sending outlook meeting request through asp.net application

  - by Vimlendu Kumar

  Hi All, Can any one plase send me the code to sending meeting request through .net web application? Thanks in advance. Regards, Vimlendu

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• what jar's should Web Component WEB-INF LIB should contain in a war file

  - by Laxmikanth Samudrala

  is web-inf/lib should contain only application specific jar's or deployment environment specific jar's also as per J2EE standards. Note : war file is not making use of any deployment environment specific functionality (for instance weblogic or websphere or tomat etc ...)

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• How to decide on what hardware to deploy web application

  - by Yuval A

  Suppose you have a web application, no specific stack (Java/.NET/LAMP/Django/Rails, all good). How would you decide on which hardware to deploy it? What rules of thumb exist when determining how many machines you need? How would you formulate parameters such as concurrent users, simultaneous connections and DB read/write ratio to a decision on how much, and which, hardware you need? Any resources on this issue would be very helpful...

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• Web based client for Amazon S3

  - by Dick Lebavo

  We are looking for a secure online solution to access our files stored on Amazon S3. We have about 3K files, mostly media and documents, that we need to make available to our employees on the move. We don't want to develop anything in-house if there is an existing solution. Please note that our employees are not technologically minded , so a simple web based upload/download GUI would work the best.

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• How to scale JPEG image down so that text is clear as possible?

  - by Juha Syrjälä

  I have some JPEG images that I need scale down to about 80% of original size. Original image dimension are about 700px × 1000px. Images contain some computer generated text and possibly some graphics (similar to what you would find in corporate word documents). How to scale image so that the text is as legible as possible? Currently we are scaling the imaeg down using bicubic interpolation, but that makes the text blurry and foggy.

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• [ASP.NET - CurrentUICulture] Where can I set CurrentUICulture at a web page

  - by Ricky

  Hi folks: I see a document said: CurrentUICulture must be set at the startup of a application. For a web page, where do I dynamically/statically set this property appropriately? Thanks.

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• How to convert Java Image into JPEG array of bytes?

  - by unknownthreat

  Is there a way to convert a Java Image, encode it into JPEG (but not saving it to a file), and store it as an array of bytes? (byte[]) I need the JPEG-encoded image as an array of bytes.

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• Best way for cross browser applications

  - by Xpiatio

  In our organization, we are still on .net 1.1 environment, using javascript, a few open source applications/widgets. Development is done using Visual Studio 2003, grid view, and iframes. Our application works in Internet Explorer 7 and IE 8 (in compatibilily mode). Can anyone give any basic steps we can take to get our application to work cross browsers? What are the starting locations we can get at to start making existing code work in different browsers?

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