本文整理汇总了VB.NET中System.Deployment.Application.UpdateCheckInfo.IsUpdateRequired属性的典型用法代码示例。如果您正苦于以下问题：VB.NET UpdateCheckInfo.IsUpdateRequired属性的具体用法？VB.NET UpdateCheckInfo.IsUpdateRequired怎么用？VB.NET UpdateCheckInfo.IsUpdateRequired使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类System.Deployment.Application.UpdateCheckInfo的用法示例。
在下文中一共展示了UpdateCheckInfo.IsUpdateRequired属性的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: InstallUpdateSyncWithInfo
Private Sub InstallUpdateSyncWithInfo()
Dim info As UpdateCheckInfo = Nothing
If (ApplicationDeployment.IsNetworkDeployed) Then
Dim AD As ApplicationDeployment = ApplicationDeployment.CurrentDeployment
Try
info = AD.CheckForDetailedUpdate()
Catch dde As DeploymentDownloadException
MessageBox.Show("The new version of the application cannot be downloaded at this time. " + ControlChars.Lf & ControlChars.Lf & "Please check your network connection, or try again later. Error: " + dde.Message)
Return
Catch ioe As InvalidOperationException
MessageBox.Show("This application cannot be updated. It is likely not a ClickOnce application. Error: " & ioe.Message)
Return
End Try
If (info.UpdateAvailable) Then
Dim doUpdate As Boolean = True
If (Not info.IsUpdateRequired) Then
Dim dr As DialogResult = MessageBox.Show("An update is available. Would you like to update the application now?", "Update Available", MessageBoxButtons.OKCancel)
If (Not System.Windows.Forms.DialogResult.OK = dr) Then
doUpdate = False
End If
Else
' Display a message that the app MUST reboot. Display the minimum required version.
MessageBox.Show("This application has detected a mandatory update from your current " & _
"version to version " & info.MinimumRequiredVersion.ToString() & _
". The application will now install the update and restart.", _
"Update Available", MessageBoxButtons.OK, _
MessageBoxIcon.Information)
End If
If (doUpdate) Then
Try
AD.Update()
MessageBox.Show("The application has been upgraded, and will now restart.")
Application.Restart()
Catch dde As DeploymentDownloadException
MessageBox.Show("Cannot install the latest version of the application. " & ControlChars.Lf & ControlChars.Lf & "Please check your network connection, or try again later.")
Return
End Try
End If
End If
End If
End Sub