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私はWebサーバにアップデートを公開しており、プログラムでダウンロードしてインストールすることはありません。 次のコードを置いても動作しません。vb.net Applicationdeployment.isnetworkdeployed falseを返す
(ApplicationDeployment.IsNetworkDeployed)場合、
条件リターン偽ノーコードが実行された場合。
Imports System.Deployment.Application
Public Class Form1
Private Sub InstallUpdateSyncWithInfo()
Dim info As UpdateCheckInfo = Nothing
System.Diagnostics.Debugger.Launch()
If (ApplicationDeployment.IsNetworkDeployed) Then
Dim AD As ApplicationDeployment = ApplicationDeployment.CurrentDeployment
MsgBox("inside if ")
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
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
InstallUpdateSyncWithInfo()
End Sub
End Class