3-Tier architecture is a very well know buzz word in the world of software development whether it web based or desktop based. Below is the code for BAL (Your can overwrite your default written code for the class file by pasting this code). You can also navigate to another page your created (list.aspx) and try updating, deleting records.In this article I am going to show how to design a web application based on 3-tier architecture. Code for Business Access Layer using System; using System. By using 3-Tier architecture in your project you can achive 1.
The below is my connection string which is stored in web.config file.For this demo application, I have taken a very simple example. 1) Fix for the code block For the css 'pre', add new property 'min-width: 730px;' and add width nn percentage.I am assuming that I have to play with record of persons (First Name, Last Name, Age) and I will refer only these data through out this article. just to give you flexibility to not show scroll bar for long screens. I have separate method for inserting, deleting, updating records into database and loading records from database. In the above code, I am instantiating Person BAL3 and calling Delete method by passing person ID as parameter so that select reocrds will be deleted from datbase. Sql Client; /// In the above code, I have a member variable called conn Str that is getting database connection string from my web.config file that is being used through out the class. Code for Grid View Data Key Names="Person ID" Auto Generate Edit Button="True" Auto Generate Columns="False" On Row Editing="Edit Record" On Row Updating="Update Record" On Row Canceling Edit="Cancel Record" On Row Deleting="Delete Record" Page Size="5" Above method will fire when Delete link will be clicked on the Grid View.Dear Sir, I find there is a format mismatch between i BO.
Help Desk Call Date and txt Help Desk Request Date in the code-behind but really dont know how to fix it. Help Desk Call Date - txt Help Desk Request Date : "30-8-2008 " I am new to programming, but looking at this I feel IBO.
Lets create a form that will have three textboxes for First Name, Last Name and Age.
Now we have to write our Presentation Layer that will use our Business Access Layer methods.
Html Controls; /// Till now we haev our Business Access Layer and Database Access Layer ready.
How we can pass a large amount of data from one layer to another. Regards Haneef Dear Sir, Thanks so much for such a nice article, I am sure it will help a lot of new . I have a small problem while using your code, I am not being able to enter and save a date field in a plain textbox (also tried using a datepicker).
Presentation Layer (UI) Presentation layer cotains pages like or windows form where data is presented to the user or input is taken from the user. Hope this article helped you understanding 3-Tier architecture and desiging it. Updated on July 01 2008: Source Code attached Full Name: Sheo Narayan Member Level: Honorary Platinum Member Status: Administrator Member Since: 7/8/2008 PMCountry: India Regards, Sheo Narayan MVP, Author, Writer, Mentor & architecting applications since year 2001.