HOW TO:使用 ClickOnce 部署 API 以程式設計方式檢查應用程式更新
更新:2007 年 11 月
ClickOnce 提供可在部署應用程式時進行更新的兩種方式。若使用第一種方法,您可以設定 ClickOnce 部署在某些間隔時間自動檢查更新;若使用第二種方法,您可以撰寫使用 ApplicationDeployment 類別的程式碼,以便根據事件 (如使用者要求) 檢查更新。
下列程序會示範某些用來執行程式設計方式更新的程式碼,同時也說明如何設定 ClickOnce 部署,使其以程式設計方式檢查更新。
如果要以程式設計的方式更新 ClickOnce 應用程式,必須指定更新的位置。有時稱為部署提供者。如需設定這項屬性的詳細資訊,請參閱選擇 ClickOnce 更新策略。
注意事項: |
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您也可以使用如下所述的技巧,從某個位置部署您的應用程式,但是從另一個位置進行更新。如需詳細資訊,請參閱 HOW TO:指定部署更新的其他位置。 |
若要以程式設計方式檢查更新
使用偏好的命令列或視覺化工具建立新的 Windows Form 應用程式。
建立按鈕、功能表項目或其他使用者介面項目,讓使用者選取該項目即可檢查更新。從該項目的事件處理常式中,呼叫下列方法,以檢查及安裝更新。
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
private void InstallUpdateSyncWithInfo() { UpdateCheckInfo info = null; if (ApplicationDeployment.IsNetworkDeployed) { ApplicationDeployment ad = ApplicationDeployment.CurrentDeployment; try { info = ad.CheckForDetailedUpdate(); } catch (DeploymentDownloadException dde) { MessageBox.Show("The new version of the application cannot be downloaded at this time. \n\nPlease check your network connection, or try again later. Error: " + dde.Message); return; } catch (InvalidDeploymentException ide) { MessageBox.Show("Cannot check for a new version of the application. The ClickOnce deployment is corrupt. Please redeploy the application and try again. Error: " + ide.Message); return; } catch (InvalidOperationException ioe) { MessageBox.Show("This application cannot be updated. It is likely not a ClickOnce application. Error: " + ioe.Message); return; } if (info.UpdateAvailable) { Boolean doUpdate = true; if (!info.IsUpdateRequired) { DialogResult dr = MessageBox.Show("An update is available. Would you like to update the application now?", "Update Available", MessageBoxButtons.OKCancel); if (!(DialogResult.OK == dr)) { doUpdate = false; } } 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); } if (doUpdate) { try { ad.Update(); MessageBox.Show("The application has been upgraded, and will now restart."); Application.Restart(); } catch (DeploymentDownloadException dde) { MessageBox.Show("Cannot install the latest version of the application. \n\nPlease check your network connection, or try again later. Error: " + dde); return; } } } } }
public: void InstallUpdateSync() { if (ApplicationDeployment::IsNetworkDeployed) { bool isUpdateAvailable = false; ApplicationDeployment^ appDeployment = ApplicationDeployment::CurrentDeployment; try { isUpdateAvailable = appDeployment->CheckForUpdate(); } catch (InvalidOperationException^ ex) { MessageBox::Show("The update check failed. Error: {0}", ex->Message); return; } if (isUpdateAvailable) { try { appDeployment->Update(); MessageBox::Show( "The application has been upgraded, and will now " + "restart."); Application::Restart(); } catch (Exception^ ex) { MessageBox::Show("The update failed. Error: {0}", ex->Message); return; } } } }
編譯應用程式。
使用 Mage.exe 部署以程式設計方式檢查更新的應用程式
請遵循逐步解說:手動部署 ClickOnce 應用程式中說明的指示,使用 Mage.exe 部署您的應用程式。在呼叫 Mage.exe 產生部署資訊清單時,請務必使用命令列參數 providerUrl,並指定 ClickOnce 應前往檢查更新的 URL。例如,如果您的應用程式會從 http://www.adatum.com/MyApp 進行更新,則用來產生部署資訊清單的呼叫可能如下所示:
mage -New Deployment -ToFile WindowsFormsApp1.application -Name "My App 1.0" -Version 1.0.0.0 -AppManifest 1.0.0.0\MyApp.manifest -providerUrl http://www.adatum.com/MyApp/MyApp.application
使用 MageUI.exe 來部署以程式設計方式檢查更新的應用程式
- 請遵循逐步解說:手動部署 ClickOnce 應用程式中說明的指示,使用 Mage.exe 部署您的應用程式。在 [部署選項] 索引標籤上,將 [開始位置] 欄位設定為 ClickOnce 應檢查更新的應用程式資訊清單。在 [更新選項] 索引標籤上,清除 [此應用程式應該檢查更新檔] 核取方塊。
安全性
您的應用程式必須具有完全信任的權限,才能使用程式設計方式的更新。