visual basic 2008 database programming tutorial

... Querying the Database ProductName Grandma's Boysenberry Spread Gravad lax Guaraná Fantástica... complex and advanced task suited to experienced database programmers However, creating database ... programmers However, creating database applications using Visual Basic NET that read, update, insert, and delete data in SQL Server databases that have already been set up is well within the ... covered extensively For the creation and management of databases, Access or the Visual Studio NET Server Explorer are adequate... to run on other database platforms, those statements will have to

Ngày tải lên: 13/08/2014, 12:21

... accesses a database. We need four pieces to build our ADO.NET project: 1. A data source – where the actual data is stored, our database. 2. A Connection object – for connecting us to our database. ... set up by the database administrator and helps prevent people from viewing or modifying the database without permission. Chapter 5 6 ❑ Initial Catalog – this is the name of the database we want ... to populate itself and to update information in the data source. The User Interface for the Database 5 Basic Data Components DataAdapter Data Connection Data Source DataSet Table1 Table2 We will

Ngày tải lên: 13/08/2014, 12:21

... Database Once changes are made to a DataSet how do we update those changes back to the database? Earlier weshowed how calling the AcceptChanges method updates only local records and not the database ... defines how we communicate with the database, and which is specific tothis solution The System.Data assembly is used to retrieve the data directly from the database ❑ Lastly we have the client ... name of the server to connect to, for example: localhost, MYSERVER Initial Catalog or Database (Required) The database to connect to, for example: Northwind, Pubs User ID (Required if set) The login

Ngày tải lên: 13/08/2014, 12:21

... instanceslike that, it makes sense to just create the SQL statement in the Visual Basic NET code and pass theSQL statement to the database After populating the DataSet, we then created the relationships ... function inclsDatabase: PadQuotes = strIn.Replace("'", "''") You only need to use the PadQuotes function when creating and executing SQL statements fromVisual Basic NET If you ... instance of clsDatabase, all we have to do – to pass a pointer to its BuildSQLWhereClause method as a parameter – is to place an AddressOf statement before clsDb.This tells Visual Basic NET to

Ngày tải lên: 13/08/2014, 12:21

... Discontinued value before passing it to the database.The value in Visual Basic NET for a Boolean is different from than which SQL Server expects ATrue in Visual Basic NET is -1 while, in SQL Server, ... toadd new records to the database Try It Out – Saving Added Records in the DataSet to the Database 1. Add the code below to the end of the ProcessUpdates procedure in clsDatabase abovethe Catch ... of being able to easily update the databasewith changes in the DataSet just by invoking the Update method, we have to write our own loopingcode to perform the database changes Let's get started

Ngày tải lên: 13/08/2014, 12:21

... ProductsDataSet.vb, you will see that it contains Visual Basic NET codedefining each element in the schema ProductsDataSet.xsx is a file used by Visual Studio todetermine information about how ... added Youwill see a screen something like that shown below:5. Notice how Visual Studio NET takes the XSD schema and renders it visually on screen If you want to see the file in its original XML format, ... to the late binding that occurs with non-typed DataSets Early binding is the ability to make Visual Basic NET aware of theexact type of an object at design time, whereas late binding means the

Ngày tải lên: 13/08/2014, 12:21

... the application's instructions, passing them on to the database in the usual way Trang 18Database Server Database PackageInside LAN The database package provides the application with the data ... drawingdata directly from the database or through a Web Service We'll do this by inserting a layer between the application calls that require database access and thedatabase itself This layer will ... the WSDL file to bring up the context menu, and select CopyShortcut 7. Open Visual Studio NET and select New Visual Basic project | Windows Application Call itBookBuyer The name doesn't matter

Ngày tải lên: 13/08/2014, 12:21

... application This Visual Basic 2008 application will be installed oneach workstation within the library, and will include both patron and trative features adminis-• The library database This database, ... (see Figure 2-4) Figure 2-4 Snip, snip, snip Trang 15From the snippet list, select Programming Visual Basic 2008, and then selectChapter 2 A list of the available snippet items for this chapter ... write Visual Basic programs;you may feel that a mild sedative would be right just about now But don’t fret Thischapter served as an introduction to the syntax and major features of Visual Basic.Now

Ngày tải lên: 13/08/2014, 08:20

... syntax: Trang 38Defining overloaded operators in Visual Basic 2008 is somewhat similar If you wereto translate the definition of multiplication into Visual Basic function-ese, it mightlook like this: ... youand I are looking for simplicity in programming, and we plunked down good moneyfor Visual Studio, so we’re certainly going to use its visual tools to edit our visualforms Trang 25The upshot of ... humble Visual Basic addition operator (+)had dreams of flying, or of speaking Hungarian, or of bending steel Well, operatorsare people, too And now their dreams can be fulfilled because Visual Basic

Ngày tải lên: 13/08/2014, 08:20

... find a Start-menu entry for it at Start ➝ [All] Programs ➝Microsoft Visual Studio 2008 ➝ Visual Studio Tools ➝ Visual Studio 2008 Com-mand Prompt envi-Figure 19-8 An amazing likeness of Form1, ... supports color If you used to be a Visual Basic 6.0 developer, you wereaccustomed to the convenient Printers collection The absence of that collection inVisual Basic 2008 means that we must use more ... following code: Private Sub MyApplication_Startup(ByVal sender As Object, _ ByVal e As Microsoft.VisualBasic.ApplicationServices _ StartupEventArgs) Handles Me.Startup If (MsgBox("Switch from

Ngày tải lên: 13/08/2014, 08:20

... with Visual Basic 2008 c 01. indd 1 4/2/08 5 :17 :02 PM Chapter 1: Welcome to Visual Basic 2008 Visual Basic 2008 can also be used... Need to Run Visual Basic 2008? ... Acknowledgments Introduction Chapter 1: Welcome to Visual Basic 2008 Event-Driven Programming Installing Visual Basic 2008 The Visual Basic 2008 IDE The Profile Setup Page The Menu The ... one of the following: ❑ Microsoft Visual Basic 2008 Express ❑ Microsoft Visual Basic 2008 Profession Edition ❑ Microsoft Visual Basic 2008 Team System... Client- and Server-Side

Ngày tải lên: 09/08/2014, 14:21

... example, 06/07/2008) that is also a valid date in the required mm/dd/yyyy format This requirement reduces ambiguity: Does 6/7/2008 mean July or June 7? In fact, this is a general truth of programming ... variable represents the address of a location in the computer’s memory Given an array index, Visual Basic 2008 just multiplies the index by the size of one element and adds the product to the address ... String) If you specify an array but don’t define a size (or upper-bound value), you’re telling Visual Basic 2008 that you don’t know or care how big the array is That means that you can pass an array

Ngày tải lên: 09/08/2014, 14:21

... a user interface and should not be confused with a programming language such as Visual Basic 2008 To illustrate this point, take a look at a basic Windows application defined in XAML and the ... values, so, by specifying that you wanted to add the Customer structure to the list box, Visual Basic 2008 called the ToString method of the Customer structure By default, the ToString method ... Using Preserve By including the Preserve keyword with the ReDim keyword, you can instruct Visual Basic 2008 to not clear the existing items One thing to remember is that if you make an array smaller

Ngày tải lên: 09/08/2014, 14:21

... benefits to software developers This is mainly because languages such as Visual Basic, C++, and, of course, Visual Basic 2008 and C# have matured to a point where they make creating objects and ... options for viewing the contents of the variable and contains an option for Text Visualizer, XML Visualizer, and HTML Visualizer ❑ Figure 10-14 2 At this point, you ’ ll want to test the debugging ... stop your project Error Handling Error handling is an essential part of any good code In Visual Basic 2008 the error mechanism is based on the concept of exceptions that can be thrown to raise

Ngày tải lên: 09/08/2014, 14:21

... the instance of Visual Studio 2008 containing the Internet Favorites project 2 Save the project and then close Visual Studio 2008 3 Switch to the instance of Visual Studio 2008 containing the ... instructions for creating a class library in Visual Studio ❑ ❑ ❑ Try It Out Creating a Class Library 1 In Visual Studio 2008 select File New Project 2 Select Visual Basic from the Project Types list ... new key pair From the Windows Start menu select All Programs Microsoft Visual Studio 2008 Visual Studio Tools Visual Studio 2008 Command Prompt If you are running on Windows Vista, you will most

Ngày tải lên: 09/08/2014, 14:21

... are two ways in which you can use images with Visual Basic 2008 First, you can use the PictureBox control that you can find in the Visual Studio 2008 Toolbox This is a control that you place ... images Trang 17 Accessing Databases Most applications manipulate data in some way Visual Basic 2008 applications often manipulate data that come from relational databases To do this, your ... Using database query objects can make your Visual Basic 2008 code simpler, because you have fewer complex SQL queries included in your code They can also make your programs faster, because database

Ngày tải lên: 09/08/2014, 14:21

... focus on the basics for web site development and move to database - driven applications With Visual Studio 2008, you will be building data - driven sites in to host your site with VS 2008; ASP.NET ... ASP.NET also supports all NET - compatible languages By default, Visual Basic 2008, C#, and JScript.NET are all available in Visual Studio 2008 Special Web Site Files When you work with ASP.NET, ... see different default attributes set by Visual Studio 2008 If you work with code in the aspx page, only the Language attribute is set by Visual Studio 2008 The Page directive has over 30 attributes

Ngày tải lên: 09/08/2014, 14:21

... to make the tasks of data transportation and exchange easier, and you, as a newcomer to Visual Basic and programming in general, are unlikely to do integration work (as it ’ s typically done by ... Trang 20Try It Out A Demonstration Web Service 1 Open Visual Studio and select File New Web Site from the menu 2 Make sure Visual Basic is selected in the Language box, and File System ... the type of project you want to create Visual Studio 2008 includes eight project templates for workflows Figure 22 - 1 shows the Workflow plates Form in Visual Studio with the template choices:

Ngày tải lên: 09/08/2014, 14:21

... more! Visual Basic 2008 Programmer ’ s Reference (Wrox Press, 978 - 0 - 470 - 18262 - 8) Visual Basic 2008 Programmer ’ s Reference is a language tutorial and a reference guide to the 2008 ... details of a couple of key titles Professional Visual Basic 2008 (Wrox Press, ISBN 978 - 0 - 470 - 19136 - 1) This book is different than other Visual Basic books because it explains intermediate ... that will help you develop your programming skills in the direction that you want We have a selection of tutorial - style books that build on the Visual Basic 2008 knowledge gained here These

Ngày tải lên: 09/08/2014, 14:21

... magazine articles devoted to VB database programming with SQL and ODBC. Visual Basic 4.0 introduced 32-bit projects but wasn’t a robust development platform. 1995’s Visual Basic 5.0 added ActiveX Data ... Microsoft Visual Basic .NET n-tier and client/server database applications, and data-intensive ASP.NET Web services. He’s been a member of the beta test team for all versions of Visual Basic starting ... Joint Engine Technology (Jet) indexed sequential access method (ISAM) database and Embedded Basic, the forerunner of Visual Basic for Applications (VBA), in 1992. Access 1.0 and 1.1 enabled rapid...

Ngày tải lên: 17/04/2014, 09:18