ClickOnce

ClickOnce Deployment Architecture

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While continuing my research and learning of ClickOnce deployment, I came across a very interesting page that explains Click Once Deployment Architecture. The article describes how a ClickOnce installation is physically installed on a client computer.

Application Publication

Each application publication has:

  • A deployment manifest – A deployment manifest is an XML file that describes a ClickOnce deployment, including the identification of the current ClickOnce application version to deploy.
  • An application manifest – An application manifest is an XML file that describes an application that is deployed using ClickOnce.
  • All of the application files for that version.
The client computer must have the .NET framework 2.0 or later installed in order to do a ClickOnce deployment to that computer. The .NET framework can be deployed in a variety of ways including the ClickOnce Bootstrapper.

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ClickOnce Deployment – Deploying multiple versions of the same application

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According to Wikipedia, ClickOnce is a Microsoft technology that enables the user base to install and run a Windows Application by clicking a link in a web page. ClickOnce is a component of Microsoft .NET Framework 2.0 and later and it supports deploying applications made with Windows Forms or Windows Presentation Foundation.

ClickOnce attempts to bring the ease of deployment similar to web applications to the Windows user base. ClickOnce aims to solve three common problems with conventional methods of deploying an application:

  1. The sometimes difficulty of updating a deployed application.
  2. The impact of an application on a user’s computer system.
  3. The need for administrator permission in order to install or update the application.