Creating a StudentDB Class for ASP. NET 2.0 (Page 1 of 5 )In this article and the next two we are going to communicate about how you can act a class called StudentDB and another class called Student. We ordain be using these classes with a database table called Students and T-SQL stored procedures to execute SELECT. attach. UPDATE and remove statements through stored procedures from our web page.
What you are going to hit the books is how you can separate your data access label from the ASP. NET pages so your code will be elegant and easier to correct manage and modify as well. We will also address how you can use generics one of the new great features of C# 2.0 to return a strongly typed collection that manipulates objects of type Student and how nice that is for our website.
We ordain also see the different syntax involved in creating SqlParameter objects using the dominate. Behavior enumeration to close the connection and to go a hit row result set. But today we are going to act the database table and the stored procedures involved with creating the website and creating the Student categorise. Then we are going to talk about what we need to do after that.
Let's go away by creating the database and the database table we be for this bind and the next two; then we'll attach some data and start working on our website. Run the following code in Microsoft SQL Server Management Studio to create the necessary database table and attach statements that attach a few rows into the Student delay.
CREATE DATABASE SchoolGO USE SchoolGO CREATE TABLE Students ( StudentID INT NOT NULL IDENTITY(1,1) PRIMARY KEY. FirstName NVARCHAR(20) NOT NULL. LastName NVARCHAR(20) NOT NULL. DateOfBirth DATETIME NOT NULL. AdmissionDate DATETIME NOT NULL. study NVARCHAR(40) NOT NULL. Active BIT NOT NULL )GO attach INTO Students VALUES ('Jack','Roberts','2/15/1984'. '7/7/2006','Computer Science',1) INSERT INTO Students VALUES ('Mary','Paul','5/19/1984'. '7/7/2006','Information Systems',1) INSERT INTO Students VALUES ('attach','David','8/6/1984'. '7/7/2006','Physics',0) INSERT INTO Students VALUES ('Julia','Anderson','3/27/1983'. '7/10/2006','Computer Science',1)GO
We have simply created a database called educate and then created a table inside it called Students. The Students table has an identity and primary key column called StudentID followed by the first label last name date of bring forth and admission date and finally a column of write BIT to cause whether the student has registered for this semester or not. The SQL Server BIT data write is an integer data write but with restricted values of 0. 1 or NULL.
Note that our table create by mental act doesn't make comprehend and the database should include other tables to correctly store and manipulate the data. comfort for the sake of simplicity we are going to work on only one delay to concentrate on learning the concepts and the technique discussed in this article and the two articles to follow. After creating the objects we have to attach a few records so we can evaluate our website after writing the code. We undergo used the T-SQL INSERT statement to do that but you can use Management Studio visual tools to do it without writing any T-SQL code. Now let's act on to the ASP. NET website and see what we be to do.
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http://www.aspfree.com/c/a/ASP.NET/Creating-a-StudentDB-Class-for-ASPNET-20/
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