如何让ClickOnce进行手动更新(含代码)

ClickOnce发布方便快捷，可实现程序远程下载、安装、自动更新等功能，但是还是有些细节做的不到位。比方服务器更新了一个新版本1.0.0.22，这时客户端运行程序检查到有新版本更新，如果不小心点击“跳过”按钮，那么再次打开程序的时候将不会再去检查是否有新版本。也就是说新版本1.0.0.22再也更新不到了，必须等待下一个新版本的发布。针对这种情况我们需要在程序中添加一个手动更新的功能，以下是网上找到的方法，特此分享给大家。

方法一：

该方法出至microsoft官方文档，以下是C#代码：

using System.Deployment.Application;

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;                }            }        }    }}

官网地址：https://msdn.microsoft.com/zh-cn/library/ms404263.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1 

方法二：

该方法是elearning视频上记录下来的，以下是C#代码：

 private void InstallUpdateSyncWithInfo()        {            if (ApplicationDeployment.IsNetworkDeployed == true)            {                ApplicationDeployment thisDeployment = ApplicationDeployment.CurrentDeployment;                this.Text = "正在检测更新...";                if (thisDeployment.CheckForUpdate() == true)                {                    if (MessageBox.Show("检测到有新的版本可以进行更新,现在需要更新吗?", "选择是否要进行更新", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)                    {                        this.Text = "正在更新中";                        thisDeployment.Update();                        MessageBox.Show("更新完毕,将要重启程序!");                        Application.Restart();                    }                    else                    {                        this.Text = Application.ProductName + " " + Application.ProductVersion;                    }                }                else                {                    MessageBox.Show("并没有新的版本进行更新!");                }            }            else            {                MessageBox.Show("这不是网络发布的程序");            }        }