How to: Check for ClickOnce Application Updates
This example uses the My.Application.Deployment object to check for available updates to the application. If the application was deployed as a ClickOnce application, the example displays appropriate user interface (UI) text.
For more information on ClickOnce applications and how to deploy them, see ClickOnce Deployment and Publishing ClickOnce Applications.
Example
This example uses the My.Application.IsNetworkDeployed Property to make sure that the application is deployed from a network using ClickOnce. Then it uses the CheckForUpdate method of the My.Application.Deployment object to check if a ClickOnce update is available for the application.
Sub CheckUpdateAvailability()
If My.Application.IsNetworkDeployed() Then
If My.Application.Deployment.CheckForUpdate() Then
MsgBox("Update is available for download")
Else
MsgBox("No updates are available for download")
End If
Else
MsgBox("Application is not ClickOnce deployed")
End If
End Sub
Only applications that are deployed using ClickOnce can be updated using the My.Application.Deployment object. For more information on deploying a ClickOnce application, see How to: Publish a ClickOnce Application.
See Also
Tasks
How to: Download ClickOnce Application Updates