[. Net] deploying a program using clickonce-Introduction

Previous CS jobsProgramAlways create an installation package for the project, and then install it independently for each user with a USB flash disk or a CD. when it is a computer or a few computers of an order of magnitude, this repetitive installation work is hard to solve one by one. if it hits hundreds or even tens of thousands. good guy. this is not a joke. once installed for hundreds of customers one by one, so tired, There is a shadow in my mind. this exposes a drawback of CS: poor distribution and deployment. don't think of the convenience of BS-only one web page can be used anywhere, without installation. I used to think about the problem of fast distribution and updating of software. A while ago, I followed the manager to upgrade the program for the customer. the manager handed me the previous program to familiarize me with it. the answer was found in the familiar process-using clickonce technology.

 

Clickonce is a deployment technology that allows you to create self-update Windows-based applications that can be installed and run with minimal user interaction. Clickonce deployment overcomes three inherent problems:

• It is difficult to update the application.When you use Microsoft Windows installer to deploy an application, you must reinstall the entire application every time you update the application. When you use clickonce to deploy the application, updates are automatically provided. Only the changed application is downloaded, and the complete and updated application is re-installed from the new parallel folder.

• Impact on users' computers.When using Windows Installer for deployment, applications usually rely on shared components, which may lead to version conflicts. When using clickonce for deployment, each application is independent, it does not interfere with other applications.

• Security permissions.Windows Installer deployment requires administrator permissions and only allows users to install the program. clickonce deployment allows non-administrator users to install the application and only grantCodeAccess security permissions.

In the past, these problems sometimes allowed developers to decide to create Web applications rather than Windows-based applications, sacrificing the rich user interfaces and responsiveness of Windows Forms for ease of installation. For applications deployed using clickonce, you can combine the advantages of these two technologies.

What is a clickonce application?

Simply put, a clickonce application is a Windows form or console application released using the clickonce technology. You can publish a clickonce application in three different ways: publishing from a Web page, sharing from a network file, or publishing from a media such as a CD-ROM. Clickonce applications can be installed on the end user's computer and run locally (even when the computer is offline) or only in online mode, without permanently installing any content on the end user's computer.

Clickonce applications can be updated by themselves. These applications can check the latest version when the new version is available and automatically replace all the updated files. Developers can specify the update behavior. The network administrator can also control the update policy, such as marking the update as mandatory. The end user or administrator can also roll back the updates to restore the application to an earlier version.

Because clickonce applications are essentially isolated, installing or running clickonce applications will not interfere with existing applications. Clickonce applications are completely independent. Each clickonce application is installed in a secure cache based on each user and application and runs from the cache. By default, clickonce applications run in the internet or Intranet security zone. If necessary, applications can request elevated security permissions.

 

Please refer to the msnd help document for details.

Reference address: http://msdn.microsoft.com/zh-cn/library/142dbbz4 (vs.80). aspx