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Silverlight Application with Management Entity Framework and WCF Service

by Roger C Moore

A guide to constructing an application using Expression Blend and Silverlight for the front-end which obtains data from a WCF service and SQL Server back-end

Simple 3-layer App Based on MVC, EF and Fluent Validation

by alex_lviv

In this article, I will try to describe my vision on creation of simple 3-layer application based on .NET technologies.

Kerosene Dynamic Data Services

by mbarbac

Implementing the Repository and Unit of Work Patterns dynamically using Kerosene ORM

Membership Stores for ASP.NET

by Shuqian Ying

Service based, multi-application, post ASP.NET 4.0 asynchronous custom membership stores for ASP.NET Identity 2.0 with a hierarchical role system.

Latest Articles

As-Is Software Architecture

by Zebedee Mason

Software for automatically constructing architecture diagrams and metrics from source code and .NET assemblies is presented. Examples for Visual C++, Python, the Linux kernel, Boost and .NET are discussed.

Realtime MVC Application using n-tier architecture

by Sandeep Neela

Simple 3-layer App Based on MVC, EF and Fluent Validation

by alex_lviv

In this article, I will try to describe my vision on creation of simple 3-layer application based on .NET technologies.

Silverlight Application with Management Entity Framework and WCF Service

by Roger C Moore

A guide to constructing an application using Expression Blend and Silverlight for the front-end which obtains data from a WCF service and SQL Server back-end

All Articles

N-Tier

Silverlight Application with Management Entity Framework and WCF Service

20 Dec 2014 by Roger C Moore

A guide to constructing an application using Expression Blend and Silverlight for the front-end which obtains data from a WCF service and SQL Server back-end

separating layers tasks in 3tier architecture

9 Jul 2011 by thatraja

You can do that in following waysCheck if duplicateCreate a method to check the username is already exists in databasepublic bool IsUsernameExists(string strUsername){ //Check the Username is exists in database Ex Query like SELECT * FROM Table WHERE...

separating layers tasks in 3tier architecture

9 Jul 2011 by Wonde Tadesse

You can do it in both ways. However if you ask me which one I prefer, I would go implementing in BLL. It is not as such good way of implement such kind of validation in DB level. One draw back is propagating the exception from DAL to BLL and then to UI is one step down than propagating from BLL...

how to create n-tier application in asp.net

23 May 2012 by Rahul Rajat Singh

Here are two application developed using n-tier architectureYaBlogEngine - A Tiny Blog Engine written in ASP.NET/C#[^]YaMessaging - A simple e-mail like messaging application[^]The first one will even explain about the n-tier architecture and how it is designed and developed that way

separating layers tasks in 3tier architecture

12 Jul 2011 by BobJanova

Generally I would put things like this in the business logic layer – after all, it is business logic. However, in the special case of unique constraints on what is presumably a table key, simply setting the primary key (or, if it's not the key column, a unique constraint) on the table will...

Can Business Logic Layer inherit Data Access Layer in n-tier architecture?

12 Feb 2012 by CDP1802

No, it's better not to do that. Inheritance creates a far too strong dependence between the application logic and the data access logic. Just try to estimate the work involved when you have to rewrite the data access classes when migrating to another database. Instead, the DAOs should expose an...

how to create n-tier application in asp.net

23 May 2012 by Sandeep Mewara

To understand about n-tier, read about 3 tier here and see how it works:Create a class library - BusinessLogic (2nd layer)Create a class library - DataAccess (3rd layer)Now, from your UI (1st layer), use the object model and pass on to BusinessLogic project class. This class is a...

New DAL/BLL class for each table

6 Apr 2014 by Abhinav S

I would recommend grouping items from a functional perspective. For eg. all authentication related items together, all database loading related items together and so on.

Best approach to load data from DB in memory (if needed)

7 Jan 2015 by Kornfeld Eliyahu Peter

You gave almost no information on how your application will be used - and that's the key for such a decision you ask for here...In any case I would not advise to pre-load data. If you have huge data it will demand huge memory to contain it, and that should be a waste. If your data is small it...

Best approach to load data from DB in memory (if needed)

7 Jan 2015 by CHill60

I agree with Kornfeld Eliyahu Peter - don't pre-load, load data as you need it.I'd be a little concerned if a user was dealing with hundreds of records "at a time" in a tax system but I think that is just me misunderstanding your requirements. However it sounds like you will definitely need...

Simple 3-layer App Based on MVC, EF and Fluent Validation

23 Oct 2015 by alex_lviv

In this article, I will try to describe my vision on creation of simple 3-layer application based on .NET technologies.

entity-framework

3 tier architecture with mvvm

21 Oct 2015 by Snesh Prajapati

MVVM is a UI layer pattern so obviously must be used in UI layer. As you have BL and DL layer too, In your ViewModel classes of MVVM, you should be using your exiting Models and BL code. And per 3 layer architecture BL would be using DL. For more have a look on...

separating layers tasks in 3tier architecture

9 Jul 2011 by mahraja

Hi can anyone tell me that in a 3tier win application, policies like 'avoid inserting duplicate username' should be implemented in the BLL, or in database (as stored procedures) ?

separating layers tasks in 3tier architecture

9 Jul 2011 by Mr.Sourav.Maitra

Firstly, do you want to use any built-in tool? Nextly, if you want a simple validation, then YES, surely that can be done in BLL. Put a simple validation by checking the Data Set you have on that moment and run validation block or function. Stored Procedure can also be used and in that case...

separating layers tasks in 3tier architecture

12 Jul 2011 by mahraja

thanks, so if I do that in BLL, it reduces one level of propagating exceptions, but also it needs to refer to database twice, first to see if it exists,next insert the record. so which one is preferred?!

C# N-Tier Project Design/Implementation

24 Sep 2012 by Adam197

Need some advice on a software engineering project that deals with large amounts of File I/O & file manipulation. Current system is written in Visual FoxPro 9 with a SQL Server 2008 database. The compiled application sits on an application server that is accessed via end users across a LAN. ...

C# N-Tier Project Design/Implementation

24 Sep 2012 by Mehdi Gholam

The "n-tier" architecture originally refered to the breaking of the application into physically separate services on different machines where n being more than 3 (UI, BL, DAL) usually multiple business logic machines.Today this is generally understood as breaking the application into...

how to: WCF services navigation

21 Oct 2012 by RuanSmit

helloi am making a wcf service program with n tier app (dataaccess tier, WCF, Presentation(asp.net))C#i have a page where you can modify a record but i am directly connected to the database and im not using a dataset. On this page there are 3 texboxes to modify the users. I want to...

how to: WCF services navigation

21 Oct 2012 by Allan Chong

It will be best to use LINQ to SQL where you map objects to your database relational tablesThen using Operation Contracts you can modify your objects by posting a service call to your WCF services, in your concrete implementation, modify your objects using data contextThe navigation is...

ASP.NET 3-Tier / 3-Layer architecture question.

28 Oct 2012 by I.explore.code

The approach I follow is I have 4 layers: UI, BLL, Objects and DAL. UI layer references BLL and Objects layers, BLL references Objects and DAL layers and DAL references Objects layer. Now, this Objects layer is where you create classes that represent objects like Product, Customer etc and...

ASP.NET 3-Tier / 3-Layer architecture question.

28 Oct 2012 by Satyendra Kumar(Analyst Programmer)

Hi bro,As you are new to .Net you have asked good question. Here is answer for your question step by step:Step 1: Create a new class library project for your Data Access Layer.Stet 2 : Add a new class library project to your solution and name it like ModalLayer. Now put your modal...

ASP.Net multitier applications

28 Dec 2012 by Suwani De Silva

I know this is a simple question and I am yet a newbie. I want to return data by joning 2 tables. "Products" table and "ProductCategory" Table.In my DAL I have a "Products" class and also a "ProductCategory" class. So do I have to create a new class that has both properties of the...

ASP.Net multitier applications

28 Dec 2012 by Oleksandr Kulchytskyi

Why so complicated ?? You can easily be bounded only with 2 tables.As far as i understood every products has it's own Product category, doesn't it??In case of YES, accordingly you must inject additional property to your's ProductCategory like List Products.Otherwise, in case where...

N-tier + MVC +EF application

8 Jan 2013 by testing450

Hi alli find a complete exemple with N-tier architecture + MVC2 (C# code) -Sql Data Base (simple=one table) -DAL(with entity Framework) -Business layer -(service layer) -Presentation Layer With MVC2 (how to make a model and controller: show , insert,...

entity-framework

Crystal Reports with N-Tier Architecture

23 Jan 2013 by AhmedYehiaK

Hi Everyone :),I have a ERP System and i used 3-Tier Architecture then i want to use Crystal reports in my system but i don't know the best way to work with crystal reports in N-Tier ArchitectureWhere i can but the reports physical files?? In which tier??How i can design report...

ASP.NET n-tier application unit testing

3 Feb 2013 by Abhinav S

For unit testing the BLL, you can always consider using the Microsoft Visual Studio Testing Framework or a third party like Nunint.For a mocking framework, you can consider using Moles[^].

SSRS and N-Tier Architecture

8 Feb 2013 by AhmedYehiaK

Hi all :)I'm new in reporting service so i'm very confused about interactions between application designed in 3-Tier architecture and reporting service reports How i can dealing with reports??What is the best practice in 3-Tier and reporting service??What about report server??Where...

SSRS and N-Tier Architecture

9 Feb 2013 by Vyacheslav Voronenko

Several points(1)As you can consume SSRS as a webservice reference, you can create your business logic service than encapsulates working with the reports. You can get the EMF/PDF ..etc representation of the report using webservices and deal with it in your code. I really do not see any...

filtering gridview by calling seach method from bll in code behind (probably simple fix)

7 May 2013 by Member 9339684

I'm fairly new to c#, asp.net and coding in general, and have been following examples online in order to learn. So far so good, well...up until now.This is the part I'm most concerned about...In the codebehind, I've tried to set the datasource for the grid based on a method in my...

insert using scope identity and multiselect checkbox list

9 May 2013 by Member 9339684

i've been stuck on how to do two insertions in one button click event. what i am trying to do is one insertion, then call the newly inserted id value so that i can insert it into another table using a different method.so basically:button click - call bll and bo - send data to dal and...

insert using scope identity and multiselect checkbox list

9 May 2013 by R. Giskard Reventlov

Can't you do both insertions from the same stored procedure? That way you only need one trip to the database and let the stored procedure handle everything.You're already getting the newly created key: use that to insert the new record in another table.If you do go this way I'd also wrap...

Want to log using Log4Net in N-tier architecture

16 Jul 2013 by ♥…ЯҠ…♥

Hi Friends,I am using N-Tier architecture in my application.That consists of MVC web application, proxy project, WCF service project, business layer project, data layer project.I am logging the application activity through Log4Net framework.Now logging is working for MVC Web...

Want to log using Log4Net in N-tier architecture

16 Jul 2013 by praks_1

Hi,see this link:http://sadi02.wordpress.com/2008/06/29/log4net-tutorial-in-c-net-how-can-i-show-log-in-a-file/[^]And u don't have to copy .xml file to all project u can do other way round also.

Want to log using Log4Net in N-tier architecture

18 Jul 2013 by ♥…ЯҠ…♥

Hi Friends, I solved this by creating separate project called log4netwrapper to log the application.I designed a class to read the log4net config file then, i wrote a class for different debug levels.Now I referenced the log4netwrapper dll to all the layer and I added configuration to...

Membership provider with 3-tier architecture

30 Jul 2013 by Ahmad Abd-Elghany

Reference System.Web

Hi All, Does the performance of the web application decrease when we deploy a 2 tier web application where the number of users are more(say 300+),Please advise?

20 Aug 2013 by Bala Selvanayagam

I presume all your processing is done at server level(where the database is and the IIS hosting is) and the workstations are running the web client.Converting this into an N- tier application may help your to distribute across several server - distributing the load and making it faster but...

web_development

Type Return method in DAL Layer when using Entity Framework and Stored Procedure

23 Sep 2013 by Nekoomanesh

i have program 3 tier (in 3 folders DAL,BLL,UI)http://bayanbox.ir/id/5085234522641486493?viewin DAL definition Project Class Library and in project definition .edmx file (Entity Framework)and created folder for Entites (definition class entites in folder).how definition type return...

entity-framework

stored-procedure

How to detect the changed poco entities in an ObservableCollection over wcf in N-Tier architecture?

4 Dec 2013 by Sadique KT

I have following layers in my applicaitonDate Layer (reference to Model)Business Layer(reference to Model ,Data)ModelService(WCF)-(reference to Model,Business Layer)UI (WPF/Silver Light) - Connected via WCF serviceHow do i detect the changed poco entities in an ObservableCollection...

How to Save and Retrieve the data of Biometric Thumb Impression ...

28 Mar 2014 by Mr.VJ

hello see the below linksc# or vb code for thumb impression capturing software using biometrics[^]http://www.vbforums.com/showthread.php?731785-RESOLVED-Biometric-reader[^]http://reddy25.blogspot.in/2009/03/thumb-impression-in-c-net-using.html[^]

New DAL/BLL class for each table

6 Apr 2014 by RexGrammer

Should I make a new DAL/BLL class for each table that I want to access in the DB? Or should I just make a generic DAL/BLL class that can handle everything?When I make new ones for each table, the code gets a bit repetitive, but it seems better than making generic classes.

How to save image to database using N-tier architecture

26 Jul 2014 by Member 1310474

Hi All,Am new to N-tier programming and am trying to save an image to the SQL Server database. The field type for the image is varbinary(MAX). In my first attempt I tried to pass the image as an object to the DAL but I got conversion errors. In the second attempt, I am converting the image...

Best approach to load data from DB in memory (if needed)

7 Jan 2015 by saleem_deek

I am planning for a project that deals with all kinds of tax for multiple companies and users. I'll be using C# (winforms), layered architecture (UI, DAL, BLL and WebService) and SQL Server.Application will be used by multiple users, where a single user will deal with hundreds (maximum...

Asp.Net Identity in n-tiers

17 Feb 2015 by Luis Oliveira 1966

Hello.I wonder how to use Identity ASP.NET on a n-tier design.I have a DLL that provides all the business logic, except authentication and authorization.I would like to implement it using ASP.NET Identity, but I'm finding it difficult to expose the classes of this DLL to the MVC...

Asp.Net Identity in n-tiers

17 Feb 2015 by Abhinav S

This is generally done by hosting OWIN files in another virtual directory and exposing these services either through WCF or WebApi.In this case, you want to integrate authentication into the business dll and so you will need to find a mechanism to host the dll as a service.I'm not aware of...

3 tier architecture with mvvm

21 Oct 2015 by phil.o

We cannot decently answer to your question, it is too vague.You may need to follow several tutorials around WPF, WCF, MVVM or not, to get a closer idea of what you are going to need, and which tool will be the most useful for you. We cannot do that for you, deciding with which technology you...

making a three tiers project

24 Oct 2015 by Sergey Alexandrovich Kryukov

Please see: https://en.wikipedia.org/wiki/Multitier_architecture[^].To proceed, you need to start with learning the OS used in each tier, its API and programming, and also some programming languages and technologies.—SA

3 tier with entity framework

24 Oct 2015 by Sergey Alexandrovich Kryukov

You are mixing up layered architectures with multi-tier architecture. The are different things. You need to learn about each of them separately.—SA

entity-framework

Add refrence class library and warning it

10 Aug 2016 by F-ES Sitecore

If means the assembly you are registering can't be found.

entity-framework

Kerosene Dynamic Data Services

11 Mar 2014 by mbarbac

Implementing the Repository and Unit of Work Patterns dynamically using Kerosene ORM

Membership Stores for ASP.NET

4 May 2014 by Shuqian Ying

Service based, multi-application, post ASP.NET 4.0 asynchronous custom membership stores for ASP.NET Identity 2.0 with a hierarchical role system.

Windows-service

Inversion of Control/Dependency Injection with Repository Pattern, Fluent Nhibernate, and LightCore Framework

17 Dec 2012 by Curtis Shull

Using IOC/DI and Repository Factory with LightCore.

N-Tier Architecture and Tips

4 May 2013 by Ws Hu

This article tries to clarify many basic concepts in N-Tier architecture from all aspects, and also provide some practical tips

Creating ASP.NET Applications with N-Tier Architecture

11 Nov 2013 by Rahul Rajat Singh

This article describes how to build ASP.NET applications using n-tier architecture.

Dynamically Loading .NET Assemblies using Interfaces and Reflection

27 Apr 2011 by Scott Bentley

This article describes why you may want to load an assembly at runtime and how to accomplish it.

Best Practice Architecture with Workflow Foundation (WF)

10 Jun 2012 by ManojKumar19

This article demonstrates how WF can be consumed as a business layer.

nTier Code Generator

9 Dec 2012 by MarkChimes2

A small utility that generates C# code for each of the layers in an nTiered system.

code-generation

As-Is Software Architecture

7 Jul 2016 by Zebedee Mason

Software for automatically constructing architecture diagrams and metrics from source code and .NET assemblies is presented. Examples for Visual C++, Python, the Linux kernel, Boost and .NET are discussed.

Get connectionstring in a class library project

13 Feb 2014 by OriginalGriff

Go with the last: the DAL is responsible for data access, so it's the only one which should need to know that connections strings are needed. And it's the one that needs to know where the database server is...the path may be different from the PL or BL because they could be on different...

Get connectionstring in a class library project

13 Feb 2014 by Prafulla Sahu

hi I am doing a sample project which has 3 layers like BAL,DAL,PL.BAL which will handle all the Business logic and DAL to perform all database related operations but I am little but confused when I entered into the DAL.To perform database operation we need connectionstring from...

ASP.NET 3-Tier / 3-Layer architecture question.

28 Oct 2012 by stuuz

Morning,Only just signed up to this site but I have read a lot of articles previously and found it really useful, so thank you for that!I am currently studying towards my final year of a Computer Science degree, and working on my final project and dissertation. I will be using ASP.NET...

Crystal Reports with N-Tier Architecture

23 Jan 2013 by Mycroft Holmes

If you have a choice DO NOT USE CRYSTAL REPORTS. They have one of the worst reputations for support in the industry. We use SQL Server Reporting Services SSRS but there are a number of better products around.It depends if you want to embed the reports in your application or use a report...

ASP.NET n-tier application unit testing

3 Feb 2013 by stuuz

Hey,I've posted about this application before and had some good responses, so hopefully you guys can help again.I'm currently undertaking my final year of a Computer Science degree in the UK, and building an ASP.NET Web Forms CMS with an E-Commerce module as my final project.I'm...

ASP.NET n-tier application unit testing

3 Feb 2013 by Kishor Deshpande

Hi,MSTest comes with Visual studio which is testing framework.Now, when you think about isolation framework to remove external dependencies, most of the developers use Rhino Mocks.If you really want to learn how you can write Unit tests for your BAL code without changing it to OR/M,The...

Error : no entity framework provider found for the ADO.NET

10 Aug 2016 by The Praveen Singh

Try adding the following runtime assembly bindings:

entity-framework

SQL-Server-2014

Error : no entity framework provider found for the ADO.NET

10 Aug 2016 by misaqyrn9677

No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file.See http://go.microsoft.com/fwlink/?LinkId=260882 for more information."Iam Using...

entity-framework

SQL-Server-2014

N-tier + MVC +EF application

8 Jan 2013 by Christian Graus

MVC2 is rubbish. Don't use it. MVC is up to 4, but 3 is good. You're asking for someone to give you a complete project, I suggest rentacoder, you'll need to pay someone to do that.

entity-framework

N Tier Entity Framework?

6 Nov 2013 by thatraja

I suggest you to go with WPF-Silverlight instead of WPF-ASP.NET. Because of similaries like XAML, MVVM, etc., So it'll be easy for you as you could use the same code for two projects. Check theseBuilding WPF and Silverlight Applications with a Single Code Base Using Prism[^]Contrasting...

entity-framework

Realtime MVC Application using n-tier architecture

9 Jan 2016 by Sandeep Neela

N Tier Entity Framework?

6 Nov 2013 by Sadique KT

I am planning to create an WPF & ASP.NET application using Entity Framework 5 or 6 with WCF in Ntier architecture..(T want the same application in desktop n web with different databases sql n oracle so if there is better way to do the same in some other manner please suggest ...)Or Any...

entity-framework

N-tier + MVC +EF application

9 Jan 2013 by testing450

Christian Graus =i find the "how to" -Passing information between layers DAL,BLL,MVC (C# Class)-why don't use RAD (MVC EF) solution?

entity-framework

how to create n-tier application in asp.net

23 May 2012 by eyecondeveloper

help needed in this with coding please.

3 tier architecture with mvvm

21 Oct 2015 by 1234ctk

I need to do a project with 3-tieras I understand the 3 tier architecture work like that:I have the view-the UI of the user,I have the BLL that have the business logic and the DAL+Model-(I want to use in entity framework)-these three are different projects on the same solution and for...

How to Save and Retrieve the data of Biometric Thumb Impression ...

30 May 2019 by Rakesh Katanguri

Hi All,I have a web application, currently we are storing the user details.Now we wants to store the Thumb Impressions of the users also, for the unique data maintenance. So, what is the procedure to store these info and how can i retrieve this data to compare(to avoid the duplicates). How...

Can Business Logic Layer inherit Data Access Layer in n-tier architecture?

12 Feb 2012 by abi1988

Is that a better way to inherit the Data Access Layer(DAL) in Business Logic Layer(BLL) instead of creating an object of DAL in BLL in any Object oriented language? However the DAL uses only protected methods & properties so that it is not 'visible' to other layers. Is this breaking n-tier...

Membership provider with 3-tier architecture

30 Jul 2013 by Ahmad Abd-Elghany

i cant reference the membership provider in my BLL ! i can't find :using System.web.security and i don't know how to reference it to the BLL, as its deal with its own DAL i know i don't need to use it with my DAL.but how can i use it with in my Tier project

Hi All, Does the performance of the web application decrease when we deploy a 2 tier web application where the number of users are more(say 300+),Please advise?

20 Aug 2013 by Prathap S V

Hi All, we have developed a web application using 2 tier architecture since the number of users are less than 30, now we need to deploy the same application to another client where the number of users are more than 300, please advise, I think may be converting this 2 tier to N-tier may be a good...

web_development

How to detect the changed poco entities in an ObservableCollection over wcf in N-Tier architecture?

4 Dec 2013 by Mycroft Holmes

I was going to be helpful right up until I saw that you are using EF. My short answer would be that you don't, you have to implement INotifyPropertyCahnged in your model. We reference the model project from both the WCF and the UI projects.

Get connectionstring in a class library project

13 Feb 2014 by Gitanjali Singh

Refer:http://stackoverflow.c...

N Tier Entity Framework?

25 Jun 2014 by Christof Senn

You might be interested in using the open source N-Tier Entity Framework[^] which uses Entity Framework on server-side and generates the entire infrastructure for building an n-tier architecture based on WCF including an EF-like API on client-side for both, Silverlight and .NET

entity-framework

making a three tiers project

24 Oct 2015 by Patrice T

Quote:How can I do that?Can't help you because you didn't give informations.Start studying documentation of 3-tier framework, search again on Google for examples ang tutorials, ask on forums of users.

Add refrence class library and warning it

12 Aug 2016 by misaqyrn9677

Can Fix It Just All Layer Must One Version Net FrameWork

entity-framework