Architecture :: Implement Observer Pattern To Refresh Another User Webpage?

Mar 13, 2011

I have some problem about observer pattern. My example is webboard system.

My solution wanna be refresh page after another user submit discussion.

I try to use observer but i don't know how to refresh another user's web page.

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Architecture :: Implement The Entity Translation Pattern?

Feb 7, 2011

Are there any tools out there which I can use to implement the Entity Translation Pattern? I dont want to write all the mappings by hand.

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Architecture :: Design Pattern And Tier Architecture

Jun 12, 2010

I am a newbie to asp.net and work in a firm where the projects are quite small.

I was told by my manager that in a few weeks or so we would be getting a bigger project and I need to be well versed with Design Patterns and N tier arcihtecture.

I would really appreciate if someone could provide me some links and also drop me a few sentences on how this things are useful?

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Architecture :: Is Layered Architecture A Pattern

Mar 2, 2010

guide in typical 4 layered architecture (having User Interface, Custom Types, Business Logic, Data Access Layer) do we follow some design pattern ? I am not clear what pattern it is or what pattern it should be called.

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Architecture :: Allow Each User To Create A Webpage On Domain / Virtual Directory Not Being Configured As An Application In IIS

Mar 1, 2010

I want to allow each user to create a webpage on our domain. example: www.site.com/username

I've created a few pages that get content from database and place it in a folder. I want each user to be able to edit their own data and when they hit "submit". the system will then copy those pages to a folder and modify the code so it read from the right database.

I keep getting "virtual directory not being configured as an application in IIS" errors. Is there any way around this error? I want the process to be 100% automatic so that I don't need to manually go into the server and configure the IIS myself.

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Refresh Small Part Of The Webpage Without Refresh The Entire Page In C# ?

Mar 11, 2011

how we can refresh small part of the web page without refresh the entire page in C# ?

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Architecture :: Which Pattern You Use?

Sep 17, 2010

I wanted to know which all design pattern have you used in your application. Just wanted to see a general idea of most commonly used, popular design patterns. I was going through this site"

http://www.dofactory.com/Patterns/Patterns.aspx

and it has tons of design patters, I have heard about singleton and factory but not others.

So guyz which all popular efficient patterns are there and how would you determine which one suits your app. Can we make a app without a design pattern.

And lastly which one are the most simplest ones out there which are easier to implement.

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Architecture :: Use Objectdatasource With MVP Pattern In C#.net?

Mar 22, 2010

How can we use ObjectDatasource with MVP pattern in ASP.NET application?

In 3-tier architecture there is no Data Access layer,.in place of DAL, I want to consume Web Services and Request and Response is in the form of Custom objects i.e. BusinessRequest and BusinessResponse class type.

Is it possible to merge all these in one solution, MVP, 3-tier web application, No DAL, Only consuming Web Service , BAL, ObjectDataSource, GridView?

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C# - What Pattern Is Layered Architecture In .net ?

Jun 9, 2010

I am a asp.net developer and don't know much about patterns and architecture.In my web applications I use 4 layers.Web site project (having web forms + code behind cs files, user controls + code behind cs files, master pages + code behind cs files)

CustomTypesLayer a class library (having custom types, enumerations, DTOs, constructers, get, set and validations)

BusinessLogicLayer a class library (having all business logic, rules and all calls to DAL functions)

DataAccessLayer a class library( having just classes communicating to database.)

-My user interface just calls BusinessLogicLayer. BusinessLogicLayer do proecessign in it self and for data it calls DataAccessLayer funtions.

-Web forms do not calls directly DAL.

-CustomTypesLayer is shared by all layers.

I though it may be MVC or MVP but pages have there code behind files as well which are confusing me.

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Trying To Implement A Business Delegate Pattern?

Jun 28, 2010

I am using ASP .NET and C#, and using the code-behind-pages concept.I am trying to implement a business delegate pattern in ASP .NET to reduce coupling between the presentation and business tiers.I want to have several ASP pages send information (through asp buttons clicks) to a "business delegate" ASP page, which will in turn send the necessary information to a C# method.The problem is that each button_click event in ASP .NET is directly tied to a C# method. I am having trouble understanding how to separate the presentation and business logic because of that.

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Architecture :: Facade Pattern (banking App)?

Sep 20, 2010

I just started working on one of the application, bascially its some maintanence work. I see from the application that Facade pattern has been utilized as I see Class Library projects named as Business Facade, Data Facade.

Though I am not redesigning this, but just wanted to know what this pattern is, a simple explanation, use, real world example should be good enough. The application is basically a banking app. I know its diff but if anyone can give me some hints/points as in why the designer chose this pattern (banking app).

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Architecture :: How To Use Singleton Pattern In Project

Jun 16, 2010

I am working on singleton desing patterns and want some real world example of design patterns.Can you please give me an example how you have used singleton pattern in you project. I would appreciate if you can provide code.

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Architecture :: Which Design Pattern Can Be Implemented?

Mar 22, 2011

suggest me a good design pattern for implmenting the following? I have an object say myObject. This myObject is created using few inputs from the UI. After the creation of myObject. This object will be passed to few methods.. like method1(myObject);

method2(myObject);... method5(myObject);etc. Each methods will prepare the input for successive methods call. For example method1(myObject) will set the values necessary for the operation of method2.Then method2(myObject) will set up the values necessary for the operation of method3 and so on..Same object is used as the argument for every method calls.Which design pattern can be implemented?

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Implement Task Recurrence Pattern In .NET Like Outlook?

Sep 7, 2010

I have to implement Scheduler like outlook in my .NET application.I have already started working on it but I can't implement Recurrence Pattern. how could i achieve this functionality. how to save task with Recurrence in database? I found this RadScheduler for ASP.NET AJAX but unfortunately this controller is commercial

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Architecture :: Repository Pattern - Pros And Cons?

Jul 8, 2010

This is possibly the worst kind of religious debate -- a religious debate with practical consequences. But it's one that needs to be had, and I can't seem to fit it in my tiny head. Here are the pros and cons of the pattern as I know them:

Pros:

-Encourages DRY (don't repeat yourself) design in that identical queries are written only once per set of query conditions
-Facilitates unit testing by allowing itself to be abstracted into an interface
-Creates an opportunity for business-level validation

Cons:

-Breaks DRY philosophy in that you're generally repeating your database schema
-In a sense breaks separation of concerns, because the query concerns of the controller and view frequently become the concerns of whoever is maintaining the repository
-Determining what should be a repository and what should be returned as a raw associated ORM entity becomes an ambiguous art

To me it seems like all this stuff should be done at the ORM level, but Entity Framework has much fewer hooks than Linq to Sql does, yet Entity Framework tends to be regarded as being more robust, so it seems that this is by design, and that the designers of EF are in fact encouraging another layer. Are there any tools or anything that I could be using for this? Am I missing something?

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Architecture :: Data Validation In Repository Pattern?

Dec 21, 2010

I am currently using the 3-tier Repository pattern in my application. Actually it's the first time for me to implement a design pattern at all! i used to put all my code in the so called now presentation layer.

i want to implement data validation, for example, password should not be more than 10 characters and have to contain special characters. Should i put this code in the data access layer? but my data access layer contains methods that take the DTO as a parameter for example

[Code]....

and the same is for other CRUD operations (DELETE and UPDATE), so implementing such validation on the DAL would make me duplicate the code in each and every method that accepts the DataObject as a paramter. Same holds for the business logic layer where i am using it as a proxy between the presentation and the data access layers.

Eventually it has to use the same Data Objects as parameters. This only leaves me with one option which is to do the validation on the Data Object part. But i think this is not the essence of the respository pattern which states that the Data object class should only be a "container" class with no behavior.

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Architecture :: What Basically Is Factory Design Pattern

Jul 17, 2010

I visited this Link to study about Factory design pattern.http://wiki.asp.net/page.aspx/310/factory/ But i am confused about it still. What i understood is that we must use an Interface to define a class .In the interface we will give the prototype of functions and later on we will define it in concrete class. Is that simple concept is Factory design pattern ?

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Architecture :: Singleton Pattern And Abstract Class?

Aug 19, 2010

I know what Singleton Pattern means and Abstract class means.What I wanted to know was how would this apply to real world.Could anyone give me any good example or simple explanation.Say I have a simple website, why would I use any of the above if any.Why would it simplify my architechture.

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Architecture :: The Respository Pattern In A Layered Web Environment?

Oct 27, 2010

I have been looking at the Repository Pattern. While trolling around the net I have come across many implementations and examples. Many of these examples have code like:

ObjectDataSource1.Datasource = CustomerRepository.GetAll();.

Since the Repository basically serves as the Data Access Layer, doesn't this violate the principles of a layered approach by having a UI component accessing the data access layer? If so, my assumption is that I would need to wrap the call CustomerRepository.GetAll() in some business object like:

ObjectDataSource1.Datasource = CustomerManager.GetAll();
where CustomerManager calls CustomerRepository.GetAll();.

If this is correct, what benefit am I getting by wrapping a business class around the Repository? It seems like I am adding an extra layer for the sole purpose of avoiding calling the DataAccessLayer/Repository directly from the UI?

Is it okay for the UI to have access to my Data Access layer in order to read data from the database?

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Architecture :: Code In Object Oriented Pattern?

Oct 4, 2010

I am creating an authentication service. This service has one of the methods to validate username and password and return a status based on it.

The validation method has bunch of things to check before it can say user is valid. This method has a pseudo code similar to this:

If UserName and Password is correct

If User Account is Locked (due to invalid attempts)

{[code]....

As you can see there are lots of if else statements that I am writing. It looks more like a procedural programming rather than object oriented.How can I fit such kind of code in object oriented pattern?

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Using WCF Callback And Web Application To Implement Publish/subscribe Pattern?

Mar 1, 2011

I'm trying to use WCF Callback to implement publish/subscribe pattern. I would like to send the message from UserA to UserB or UserA to every clients at the moment. I got an example from here

In my app, I use asp.net as a client to connect wcf service instead and I found a problem when I subscrib to wcf service.

The wcf service does not hold any other clients object. So when I call GetAllClients(_guid), It will return only 1 client which is itself.

Here is the code in asp.net page (i put every control inside updatePanel)

[code]...

Is it possible to implement this publish/subscribe with asp.net and wcf callback? (I already tried on window app and it worked fine)If it is possible, how can I keep all clients that is connecting to WCF Service so I can use those GuId to call callback method.

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Architecture :: Good Design Pattern For Forum Development?

Jan 12, 2011

i want to know which design pattern is good for forums web site design

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Architecture :: Provider Model Versus Repository Pattern

Feb 4, 2011

I am trying to understand the fundamental differences between the Provider Model and Repository Pattern.

I have used the Provider Model in many many situations and am confident with it when designing applications. However, the more examples I encounter on the internet and asp.net evolution I keep coming across "Repository" Interfaces for classes that look like a Provider Model.

I have dug around a bit but all I can see is that they kinda do the same thing, or closely overlap by enforcing an inheriting class to adhere to a "contract" of implemented / abstracted methods etc...is there more to it?

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Ajax - Pattern For Long Running Tasks Invoked Through Webpage?

Apr 1, 2011

I need to invoke a long running task from an ASP.NET page, and allow the user to view the tasks progress as it executes.

In my current case I want to import data from a series of data files into a database, but this involves a fair amount of processing. I would like the user to see how far through the files the task is, and any problems encountered along the way.

Due to limited processing resources I would like to queue the requests for this service.

I have recently looked at Windows Workflow and wondered if it might offer a solution?

I am thinking of a solution that might look like:

ASP.NET AJAX page -> WCF Service -> MSMQ -> Workflow Service *or* Windows Service

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Architecture :: Implement N-tier Architecture?

Feb 19, 2011

some link of some articles for learning N-tier architecture ....

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