HI
Visual Basic .NET (VB.NET or VB .NET) is a version of Microsoft's http://searchwindevelopment.techtarget.com/sDefinition/0,,sid8_gci213309,00.html that was designed, as part of the company's http://searchwindevelopment.techtarget.com/sDefinition/0,,sid8_gci342248,00.html product group, to make http://searchsoa.techtarget.com/sDefinition/0,,sid26_gci750567,00.html applications easier to develop. According to Microsoft, VB .NET was reengineered, rather than released as VB 6.0 with added features, to facilitate making fundamental changes to the language.http://searchwindevelopment.techtarget.com/answer/How-I-connect-to-an-Excel-spreadsheet-and-search-for-a-value-using-VBNET is the first fully object-oriented programming (http://searchsoa.techtarget.com/sDefinition/0,,sid26_gci212681,00.html) version of Visual Basic, and as such, supports OOP concepts such as http://searchcio-midmarket.techtarget.com/sDefinition/0,,sid183_gci343038,00.html, http://searchcio-midmarket.techtarget.com/sDefinition/0,,sid183_gci212351,00.html, http://searchcio-midmarket.techtarget.com/sDefinition/0,,sid183_gci212803,00.html, and aggregation.
Example

VB.NET ADO.NET Tutorial
ADO.NET is a data access technology from Microsoft http://vb.net-informations.com/framework/what_is_net_framework.htm , which provides communication between relational and non-relational systems through a common set of components . ADO.NET was built for a disconnected architecture , so it enables truly disconnected data access and data manipulation through its Dataset Object, which is completely independent from the Data Source.
The two key components of ADO.NET are http://vb.net-informations.com/ado.net-dataproviders/ado.net-dataproviders-tutorial.htm and DataSet . The .Net Framework includes mainly three Data Providers for ADO.NET. The Microsoft http://vb.net-informations.com/ado.net-dataproviders/ado.net-sqlconnection.htm , http://vb.net-informations.com/ado.net-dataproviders/ado.net-oledbconnection.htm and http://vb.net-informations.com/ado.net-dataproviders/ado.net-odbcconnection.htm are the main Data Providers in the .Net Framework. In the following pages you can see each component of ADO.NET in details with source code.
refer the links
http://vb.net-informations.com/ado.net/vb.net-ado.net-tutorial.htm
http://www.homeandlearn.co.uk/NET/nets1p12.html
http://www.java2s.com/Tutorial/VB/CatalogVB.htm
http://www.vbnettutorial.net/