ClickOnce部署问题

Question

我遇到问题，看到ClickOnce如何知道它如何比较文件以及如何查找这些文件。我将让我的ClickOnce应用程序连接到服务器，但它是否在内部执行此操作？

Answer 1

如果你不想做编程的更新，请在更新对话框中的“运行前检查更新”（点击发布屏幕上更新）。然后，当您发布新版本时，它将与原始部署位于相同的文件夹中。当用户运行应用程序时，它会检查是否有更新，并会询问他是否要安装它。此时，用户可以跳过它，或接受更新。

如果您使最低版本（在更新对话框中）等于您正在部署的版本，它不会问他，它只会更新应用程序。

如果他跳过更新，几周后他不会再看到它，如果有的话。微软说2周，但我不相信它再次出现，所以他可能要等到NEXT更新或去手工安装新的。

Answer 2

你会发现你需要的一切在Publishing ClickOnce Applications（MSDN）。

从How to: Check for Application Updates Programmatically Using the ClickOnce Deployment API：

1. 创建一个新的Windows窗体用你喜欢的命令行或可视化工具的应用。
2. 创建您希望用户选择检查更新的任何按钮，菜单项或其他用户界面项目。从该项目的 事件处理程序调用以下方法检查并安装 更新。

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; 
       } 
      } 
     } 
    } 
}