A month or so ago, I wrote a few articles introducing you to the world of databases and VB. If you have followed them, you have seen that it is not particularly difficult to use databases properly from VB. Today's article is no exception. Today I will talk about using stored procedures built into SQL Server, with your VB. Well, technically, here is a great definition; but, a stored procedure is simply a means of keeping your database layer apart from your actual program's code.

You store whatever SQL commands you'd like to execute in a stored procedure that you can use externally. Another benefit of a stored procedure is that it eliminates the risk of SQL Injection, as all the parameters used will be populated dynamically.

Today you will learn the following:. Before we can create a stored procedure to do all of the above mentioned tasks, we obviously need a database. I may be captain obvious here, but open SQL Server and create a new database named Test.

If you do not want to create a database, leave it at the default SQL Server database, which is Master. This creates a procedure in SQL named CreateTable. Then it tells the procedure what to do. This is a standard SQL statement creating a table with the fields, their data types and each field's constraints.

Before you create the Insert statement, you must specify the parameters that this query will expect. These parameters will be populated during runtime of your application. Now we can move on to create the VB. Name it anything you like and design the form to resemble Figure 1. Figure 1 - Our Design. In all honesty, most of the code I will demonstrate today will be more or less the same. I live by the principle: Keep it simple stupid.

This has brought me very far, even if I am not the sharpest tool in the shed. As always, let me start with the Imports statement s needed for today's example.

SQL Server Forums - IDENTITY_INSERT is set to ON problem

Add this line on top of your class definition:. The first object, strConn specifies our database connection string. It is broken down into three parts:. The next object, sqlCon will be used as a SQLConnection object, which assists in connecting to the physical data store specified earlier.

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This next sub you will be creating is used just to load the data from the database and display it to the user. There is no use of a stored procedure as that would have been overkill. This should look familiar if you have read my previous article concerning databases. If you haven't read any of them yet, here is an introduction to get you started.

Anyways, it is quite simple really. This is what happened in the LoadData sub:.

Processing an OLAP cube with a T-SQL Stored Procedure

It's the same principle here, except that we modify the Command object a little to specify the stored procedure we will be using; then, we execute it as a NonQuery. NonQuery means that there is no data being returned, just a simple action the SQL code should take.

Now that you have a table, you can insert data into it. Create the InsertNewRecord sub now:. Again, still following the same principle - see, I told you it is easy! There are a couple of new statements in there. The statements in the middle add parameters to the command object. These parameters were specified inside the Insert Stored Procedure.

By using parameters it easier to manage the data being sent into the SQL Command object. Here, you also gave each parameter a value, which is the associated textbox. Now add the following two subs. One sub is to edit the information inside a database table; the other is to delete certain information:. As you can see, if you have the basic fundamentals of database design and VB. NET, you can create very powerful yet small programs to extract and manipulate data.

Obviously, this is just a small example; but it can be used in any major application. I hope you have enjoyed this little article.

Programming with Stored Procedures in Visual Basic .NET (Part 2) - sotoyege.web.fc2.com

Until next time, cheers! Good Code but as i think studentid parameter is missing in Private Sub UpdateRecord procedure. All good basic examples except for the first one that displays the data to the user. Never hard-code SQL statements unless it is just something for yourself. Otherwise, I like your examples and the use of the "Using" block.

There are far too many developers out there without either sufficient rights or sufficient skill to write a good sproc. LINQ for SQL will do if you're in one of those places, although a SQL admin will come knocking on your door if your query is a performance mule.

I HAVE A SQLITE DATA BASED FROM A iPhone AND I WANT TO BE ABEL TO EXPORT THIS AND READ THE MESSAGES. ExecuteNonQuery ] is always -1!!! Stay up-to-date with our free Microsoft Tech Update Newsletter.

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