Simple use of interfaces

Source: Internet
Author: User


An interface defines a protocol. Classes or structures that implement interfaces must comply with their agreements. The statement takes the following form:
[Attributes] [Modifiers]Interface Identifier[:Base-list]{Interface-body}[;]


Additional declarative information. For more information about attributes and attribute classes, see .
The allowed modifiers include new and four access modifiers.
Interface Name.
Contains a list of one or more explicit basic interfaces separated by commas.
Declaration of interface members.

Public interface idinterface
Dataset getmanytable (string [] selectsql, string [] tablename );
Void excutesqlcommand (string sqlcommandstring );

Public class classdata: idinterface
Public dataset getmanytable (string [] selectsql, string [] tablename)
// Skip the intermediate implementation process
Public void excutesqlcommand (string strsqlcmd)
// Skip the intermediate implementation process


Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.