ApplicationDeployment.CheckForUpdateProgressChanged Zdarzenie
Definicja
Ważne
Niektóre informacje odnoszą się do produktu w wersji wstępnej, który może zostać znacząco zmodyfikowany przed wydaniem. Firma Microsoft nie udziela żadnych gwarancji, jawnych lub domniemanych, w odniesieniu do informacji podanych w tym miejscu.
Występuje, gdy aktualizacja postępu jest dostępna w wywołaniu CheckForUpdateAsync() .
public:
event System::Deployment::Application::DeploymentProgressChangedEventHandler ^ CheckForUpdateProgressChanged;public event System.Deployment.Application.DeploymentProgressChangedEventHandler CheckForUpdateProgressChanged;member this.CheckForUpdateProgressChanged : System.Deployment.Application.DeploymentProgressChangedEventHandler Public Custom Event CheckForUpdateProgressChanged As DeploymentProgressChangedEventHandler Typ zdarzenia
Przykłady
Poniższy przykład kodu używa CheckForUpdateProgressChanged zdarzenia, aby poinformować użytkownika, ile manifestu wdrożenia pozostało do pobrania. Przykład wymaga wdrożenia aplikacji Windows Forms zawierającej kontrolkę StatusStrip i że ta kontrolka zawiera kontrolkę ToolStripStatusLabel o nazwie downloadStatus.
private:
long sizeOfUpdate;
private:
void Form1_Load(Object^ sender, System::EventArgs^ e)
{
DoUpdate();
}
public:
void DoUpdate()
{
if (ApplicationDeployment::IsNetworkDeployed)
{
ApplicationDeployment^ currentAppDeployment =
ApplicationDeployment::CurrentDeployment;
currentAppDeployment->CheckForUpdateCompleted +=
gcnew CheckForUpdateCompletedEventHandler(
this, &Form1::currentDeploy_CheckForUpdateCompleted);
currentAppDeployment->CheckForUpdateAsync();
}
}
// If update is available, fetch it.
void currentDeploy_CheckForUpdateCompleted(Object^ sender,
CheckForUpdateCompletedEventArgs^ e)
{
if (nullptr != e->Error)
{
// Log error.
return;
}
if (e->UpdateAvailable)
{
sizeOfUpdate = (long) e->UpdateSizeBytes;
if (!e->IsUpdateRequired)
{
System::Windows::Forms::DialogResult
updateDialogueResult = MessageBox::Show(
"An update is available.Would you like to update the" +
" application now?", "Update Available",
MessageBoxButtons::OKCancel);
if (System::Windows::Forms::DialogResult::OK ==
updateDialogueResult)
{
BeginUpdate();
}
}
else
{
BeginUpdate();
}
}
}
void BeginUpdate()
{
ApplicationDeployment^ ad = ApplicationDeployment::CurrentDeployment;
ad->UpdateCompleted +=
gcnew AsyncCompletedEventHandler(
this, &Form1::CurrentDeployment_UpdateCompleted);
// Indicate progress in the application's status bar.
ad->UpdateProgressChanged +=
gcnew DeploymentProgressChangedEventHandler(this,
&Form1::ad_ProgressChanged);
ad->UpdateAsync();
}
void CurrentDeployment_UpdateCompleted(Object^ sender,
AsyncCompletedEventArgs^ e)
{
if (!e->Cancelled)
{
if (nullptr != e->Error)
{
System::Windows::Forms::DialogResult
restartDialogueResult = MessageBox::Show(
"The application has been updated. Restart?",
"Restart Application",
MessageBoxButtons::OKCancel);
if (System::Windows::Forms::DialogResult::OK ==
restartDialogueResult)
{
Application::Restart();
}
}
else
{
// Replace with your own error reporting or logging.
MessageBox::Show(
"The application encountered an error in downloading" +
" the latest update. Error: {0}",
e->Error->Message);
}
}
else
{
// Replace with your own error reporting or logging.
MessageBox::Show("The update of the application's latest" +
" version was cancelled.");
}
}
void ad_ProgressChanged(Object^ sender,
DeploymentProgressChangedEventArgs^ e)
{
String^ progressText =
String::Format(
"{0:D}K out of {1:D}K downloaded - {2:D}% complete",
e->BytesCompleted / 1024, e->BytesTotal / 1024,
e->ProgressPercentage);
statusStrip1->Text = progressText;
}
long sizeOfUpdate = 0;
private void UpdateApplication()
{
if (ApplicationDeployment.IsNetworkDeployed)
{
ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment;
ad.CheckForUpdateCompleted += new CheckForUpdateCompletedEventHandler(ad_CheckForUpdateCompleted);
ad.CheckForUpdateProgressChanged += new DeploymentProgressChangedEventHandler(ad_CheckForUpdateProgressChanged);
ad.CheckForUpdateAsync();
}
}
void ad_CheckForUpdateProgressChanged(object sender, DeploymentProgressChangedEventArgs e)
{
downloadStatus.Text = String.Format("Downloading: {0}. {1:D}K of {2:D}K downloaded.", GetProgressString(e.State), e.BytesCompleted/1024, e.BytesTotal/1024);
}
string GetProgressString(DeploymentProgressState state)
{
if (state == DeploymentProgressState.DownloadingApplicationFiles)
{
return "application files";
}
else if (state == DeploymentProgressState.DownloadingApplicationInformation)
{
return "application manifest";
}
else
{
return "deployment manifest";
}
}
void ad_CheckForUpdateCompleted(object sender, CheckForUpdateCompletedEventArgs e)
{
if (e.Error != null)
{
MessageBox.Show("ERROR: Could not retrieve new version of the application. Reason: \n" + e.Error.Message + "\nPlease report this error to the system administrator.");
return;
}
else if (e.Cancelled == true)
{
MessageBox.Show("The update was cancelled.");
}
// Ask the user if they would like to update the application now.
if (e.UpdateAvailable)
{
sizeOfUpdate = e.UpdateSizeBytes;
if (!e.IsUpdateRequired)
{
DialogResult dr = MessageBox.Show("An update is available. Would you like to update the application now?\n\nEstimated Download Time: ", "Update Available", MessageBoxButtons.OKCancel);
if (DialogResult.OK == dr)
{
BeginUpdate();
}
}
else
{
MessageBox.Show("A mandatory update is available for your application. We will install the update now, after which we will save all of your in-progress data and restart your application.");
BeginUpdate();
}
}
}
private void BeginUpdate()
{
ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment;
ad.UpdateCompleted += new AsyncCompletedEventHandler(ad_UpdateCompleted);
// Indicate progress in the application's status bar.
ad.UpdateProgressChanged += new DeploymentProgressChangedEventHandler(ad_UpdateProgressChanged);
ad.UpdateAsync();
}
void ad_UpdateProgressChanged(object sender, DeploymentProgressChangedEventArgs e)
{
String progressText = String.Format("{0:D}K out of {1:D}K downloaded - {2:D}% complete", e.BytesCompleted / 1024, e.BytesTotal / 1024, e.ProgressPercentage);
downloadStatus.Text = progressText;
}
void ad_UpdateCompleted(object sender, AsyncCompletedEventArgs e)
{
if (e.Cancelled)
{
MessageBox.Show("The update of the application's latest version was cancelled.");
return;
}
else if (e.Error != null)
{
MessageBox.Show("ERROR: Could not install the latest version of the application. Reason: \n" + e.Error.Message + "\nPlease report this error to the system administrator.");
return;
}
DialogResult dr = MessageBox.Show("The application has been updated. Restart? (If you do not restart now, the new version will not take effect until after you quit and launch the application again.)", "Restart Application", MessageBoxButtons.OKCancel);
if (DialogResult.OK == dr)
{
Application.Restart();
}
}
Private sizeOfUpdate As Long = 0
Dim WithEvents ADUpdateAsync As ApplicationDeployment
Private Sub UpdateApplication()
If (ApplicationDeployment.IsNetworkDeployed) Then
ADUpdateAsync = ApplicationDeployment.CurrentDeployment
ADUpdateAsync.CheckForUpdateAsync()
End If
End Sub
Private Sub ADUpdateAsync_CheckForUpdateProgressChanged(ByVal sender As Object, ByVal e As DeploymentProgressChangedEventArgs) Handles ADUpdateAsync.CheckForUpdateProgressChanged
DownloadStatus.Text = [String].Format("{0:D}K of {1:D}K downloaded.", e.BytesCompleted / 1024, e.BytesTotal / 1024)
End Sub
Private Sub ADUpdateAsync_CheckForUpdateCompleted(ByVal sender As Object, ByVal e As CheckForUpdateCompletedEventArgs) Handles ADUpdateAsync.CheckForUpdateCompleted
If (e.Error IsNot Nothing) Then
MessageBox.Show(("ERROR: Could not retrieve new version of the application. Reason: " + ControlChars.Lf + e.Error.Message + ControlChars.Lf + "Please report this error to the system administrator."))
Return
Else
If (e.Cancelled = True) Then
MessageBox.Show("The update was cancelled.")
End If
End If
' Ask the user if they would like to update the application now.
If (e.UpdateAvailable) Then
sizeOfUpdate = e.UpdateSizeBytes
If (Not e.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 (System.Windows.Forms.DialogResult.OK = dr) Then
BeginUpdate()
End If
Else
MessageBox.Show("A mandatory update is available for your application. We will install the update now, after which we will save all of your in-progress data and restart your application.")
BeginUpdate()
End If
End If
End Sub
Private Sub BeginUpdate()
ADUpdateAsync = ApplicationDeployment.CurrentDeployment
ADUpdateAsync.UpdateAsync()
End Sub
Private Sub ADUpdateAsync_UpdateProgressChanged(ByVal sender As Object, ByVal e As DeploymentProgressChangedEventArgs) Handles ADUpdateAsync.UpdateProgressChanged
Dim progressText As String = String.Format("{0:D}K out of {1:D}K downloaded - {2:D}% complete", e.BytesCompleted / 1024, e.BytesTotal / 1024, e.ProgressPercentage)
DownloadStatus.Text = progressText
End Sub
Private Sub ADUpdateAsync_UpdateCompleted(ByVal sender As Object, ByVal e As AsyncCompletedEventArgs) Handles ADUpdateAsync.UpdateCompleted
If (e.Cancelled) Then
MessageBox.Show("The update of the application's latest version was cancelled.")
Exit Sub
Else
If (e.Error IsNot Nothing) Then
MessageBox.Show("ERROR: Could not install the latest version of the application. Reason: " + ControlChars.Lf + e.Error.Message + ControlChars.Lf + "Please report this error to the system administrator.")
Exit Sub
End If
End If
Dim dr As DialogResult = MessageBox.Show("The application has been updated. Restart? (If you do not restart now, the new version will not take effect until after you quit and launch the application again.)", "Restart Application", MessageBoxButtons.OKCancel)
If (dr = System.Windows.Forms.DialogResult.OK) Then
Application.Restart()
End If
End Sub
Uwagi
CheckForUpdateProgressChanged raportuje stan pobierania manifestu wdrożenia aplikacji. Mogą to być ważne informacje dla użytkowników, którzy pobierają wdrożenie za pośrednictwem wolnych połączeń sieciowych.