Architecture :: What Is Component Based Development In Dotnet
Feb 19, 2010
1. Can you explain me what is component based development ? What I am already doing is using layers (user interface, custom types, data access layer and busines logic layer). For example for filling a drop down list with countries what I do is getting data from DAL using custom types in my BLL and BLL return a list of countries to user interface. Now in my opinion it is a plug-able component that I can use anywhere. Should it be called a component ?
2. What is a component a method ? or class or a assambly ?
3. Can components be like that (methods and assemblies) or they are services to embed ?
4. Actually I never have used services, if component can be in both ways (services & classes and assemblies) than what approach is better, should component be made in form of assemblies or services ?
5. Without being so technical any general rules on making re-usable components ?
I'm building an ASP.Net MVC 2 application with a component architecture. There are two different types of components: Elementary Components, which have an associated controller action rendering a partial view, and Layout Components, which render all their child components (Elementary Components or again Layouts) in a certain layout.Here is my generic RenderComponent() action method, which takes a component ID and renders the appropriate view:
[Code]....
Is my hierarchical component architecture incompatible with ASP.Net MVC? How would you build such a system in ASP.Net MVC?
I am starting to design my own CMS , and i want it to be modular to add more functionality later by me or by any other developer I put my eyes on joomla CMS (very popular ,robust and extensible) I want to make a CMS with asp.net to be just skeleton and all functions are done through components
Functions like :-
User management Content Management ,editing and display etc.
My main idea is to let the skeleton to know from the query URL the required component and pass all other parameters to it and the component do the rest (parse parameters display results etc.)
the problem is how to achieve this how to call the component and and how to let it render its UI and pass it to the skeleton to put it in the appropriate place in the main site template
I have two questions, could anybody please answer to those:1) Do I need to install Dotnet framework 2.0 if dotnet framework 3.5 is already installed on the same server?2) Also do I need to install "ASP.NET 2.0 AJAX Extensions 1.0" if higher version is installed on the same server?
We are in the midst of developing WEB application using .NET. so, i would like to know the Best practises for ASP.NET development, SQL server db, IIS security and network security as well. Where to get the information? I googled for it, but i cannot get the complete set and the info was updated 7 years ago. [URL]
This question is for ASP.NET and SQL Server developers. What are your best practices with respect to setting up your development and test environment? I'm interesting in the following issues:
1. How many tiers do you recommend and what goes on on each tier? Just dev, test, and production or perhaps dev, test, staging, and production?
2. Which types of applications and/or servers should run on actual physical hardware and which can get away with a VM?
3. What are your strategies for loosely coupling users from web sites, web developers from their web/app/DB servers, and DB developers from their DB servers?
4. How do developers stay "DRY?"
5. What are the pros and cons to putting web, app, and DB servers on their own machines? Does putting servers on separate machines in order to minimize contention for a machine's resources trump any NIC and network latencies that might be introduced by putting them on different machines?
6. How do you configure your web apps to minimize contention for resources (e.g. virtual directories, separate application pools, etc.)
7. How and how often do you refresh your databases on each tier? Do you just refresh the data or both the data and objects?
was giving a though on using ajax enabled wcf services as part of architecturegenerally wht im usingis UI-> BL-> data accessis it suggestable to use wcf services layer insteadof BLnd hv UI-> services-> data accessrelated to asp.netwould like to no pro's and con's of doing this thing.
Is there any way to seperate development of different modules in a application other than using namespaces? I want to be able to define interfaces between the modules and unit test them seperately.
Actually i dont know whther this is the correct forum or not? but i didnt found any other section to post a question like this.Actually i am in . I need to document the service i developed so when my absence or something the other developer can understand my way and code.The aim is to specify the module descriptions, needs and business logic i used to implement. So the next developer can understandCan anyone tell me the name of this document. Developer Document ? Please tell the correct name of this and any link to download any template to undertand. Please dont take it as simple question
I am trying to stop the data flow when certain conditions happen in the script component. Like if a row in the data set has an invalid date, I dont want that dataset to be inserted in the tables or go through OLEDB Destination, rather I want the entire data flow for that dataset to stop and go back to the control flow page.
I have tried mulitple solutions but nothing worked. Conditional Split ends up inserting the correct rows, but I just dont want anyting to be inserted when one row is bad, where as I do want the entire dataset to be inserted if all rows are good.
How can I fail the component when certain conditions happen int eh script component.
i am going to develop a web based application with c# but i am very upset that how to design a good pattern how to code to let the program more efficient.
i just want to make sure that i am folling the correct pattern and following the right practice and i have read the book (Wrox.Professional.Enterprise.dot.NET) and based on that book here is what i come-up with my design.
I am working on a website where when the user logs in, I select their database based on their username. Currently I have a list of all databases in the web.config and I select the Database ID from the username and then read the database string from web.config. What is the most optimal way to implement this scenario?
currently I:
- store the Database ID in the session object
- the Session object expires after like 5 minutes so i have to read the Database ID from the online database based on the username and regenerate the Session["DatabaseID"] again.
- there are some security issues with the Session ID, so I started clearing the Session in !(Page.IsPostBack) and I generate the Database string again.
Where shall I store the DatabaseID and the database connection string so I can easily reuse it once the user has logged in?
We have one new project to implement. Let me explain briefly about this project. This project is related showing chart to end user on the basis of different mathematical calculated formulas.
End user has authority to change these formulas on the fly and on the basis of that changed formula we need to show the chart. So this is all central idea about the project. These charts which I mentioned above are very complicated and user friendly
So can any buddy tell me which is best suitable architecture for this and how can fit her to my scenario .I knows, three tier architecture and some other are there but I want know which is the best architectures that developed above idea in right way
I need to implement field level security based on the roles. I have a page Employee.aspx . In that i have ten controls. If i am enter as admin role i need to show all the controls. If i am enter as user have to show only five controls. How to design the appplication for control level security?
I am beginner in asp.net / vb.net and I developed a web application for inventory management. here I have my insertion procedure that I entered in my code behind all the different page of my application. My problem is the following:
* I would like to put my procedure in a class that I will call on my different page * how to create this class * how to call this class on my pages
here is my procedure:
Private Sub reqinsertion (ByVal sreq As String) Dim con As New System.Data.Odbc.OdbcConnection ("Dsn = dshealthboard") Sun ocommand As System.Data.Odbc.OdbcCommand con.Open () ocommand = New System.Data.Odbc.OdbcCommand (sreq, con) ocommand.ExecuteNonQuery () con.Close () End Sub
I would like to know how can I list for every page (child page) selected the number and id of localize component in the current page. I need this to update resources files, a button will be on the master page and when they click on it, they will go to a page which show up every data in the resource file.
Edit: I would like to keep the infrastructure as is, so while the framework ideas are appreciated, please keep your suggestions centered on the context I have provided.
Background
I'm building a web-based application that dynamically loads plugins. Each plugin comes with a manifest file that contains its dll location, namespace, and type.
Right now I'm using System.Reflection.Assembly.LoadFile to load up the dlls based off the locations provided in the manifest files. Then I load the types and so on.
As an Aside: I may wind up changing to System.Reflection.Assembly.LoadFrom since I'll eventually be loading files from outside the bin directory. But if their is a better way (Assembly.Load or something), feel free to add that in as well
Problem
The problem is that Multiple plugins can potentially run off the same dll. So I wind up executing System.Reflection.Assembly.LoadFile("Identical.dll") multiple times.
I have the idea to check if my assembly has already been loaded by iterating through AppDomain.CurrentDomain.GetAssemblies(), but I don't know if that will help with performance (or if it will work period, I haven't tried it).
Also, I can't keep a list of loaded assemblies due to the project's design constraints (though you may argue that it's a poor design: I can't change it, even if I wanted to OR agreed with you... so please don't press the issue.
Ultimately my goals are:
Don't ever re-load the same assembly twice. Performance is key.
i got a problem.. how i can declare template textbox in a datagrid at code behind? i already make a stored procedure and put the update query inside it.. if i declare the textbox inside code behind(.aspx.vb).. there will be an error.. " there is already a component named "txtitem1"component must have a unique name.."
We have a largely asp.net web form team (With some Oracle developers thrown in).
Question 1:
Is it a good idea to start using asp.net MVC which will mean redevelopment of a number of standard controls for not much benefit.
Question 2:
Is it a good idea to hire developers where there most recent skills are with asp.net MVC?
I doubt there is any benefit adopting MVC now, given the 100+ applications in this suite of products, and the maintenance/rework this will cause. Given this, is there any particular reason to hire MVC developers, as they won't be hitting the ground running, which is what I need now.
