ASP PAGE STRUCTURE-DIRECTIVES(IMPORT )

Import Directives

• By default, only certain namespaces are automatically imported into an ASP.NET page. 
• If we want to refer to a class that isn't a member of one of the default namespaces, then  explicitly import the namespace of the class or  use the fully qualified name of the class.
• For example, suppose we want to send an email from an ASP.NET page by using the Send method of the SmtpMail class. 
• The SmtpMail class is contained in the System.Web.Mail namespace. 
• This is not one of the default namespaces imported into an ASP.NET page.
• The easiest way to use the SmtpMail class is to add an Import directive to your ASP.NET page to import the necessary namespace.

<%@ Import Namespace="System.Web.Mail" %>
 Dim mailMessage As SmtpMail

• Instead of importing the System.Web.Mail namespace with the import directive, we can alternatively use its fully qualified name.

Dim mailMessage As System.Web.Mail.SmtpMail