C# 正在从“更新ShowMessageAsync进度值”；“外部”；方法

我有一个使用资源的WPF C#应用程序。我试图将控件绑定到另一个类的方法调用，并在方法逐步完成时手动增加进度条的进度

我很难理解如何编程“我们在方法X的检查点1-报告完成25%。现在我们在方法X的检查点2-报告完成50%”

MainWindow.xaml.cs中启动ShowMessageAsync进度条的方法如下所示：

     private async void installThirdPartyUpdatesButton_Click(object sender, RoutedEventArgs e)
    {
        var app = ((FrameworkElement)sender).DataContext as Tuple<ThirdPartyUpdate.InstalledApplicationFromRegistryScan, ThirdPartyUpdate.ManifestRequiredApplication, ThirdPartyUpdate.RequiredApplicationState>;

        Button ThirdPartyInstallButton = sender as Button;
        ThirdPartyInstallButton.IsEnabled = false;

        var controller = await this.ShowProgressAsync("Please wait...", "Preparing update installation...");
        await Task.Delay(2000);
        controller.SetCancelable(false);

        if (app != null)
        {
            ThirdPartyUpdate.thirdPartyApplicationInstallWorkflow(app);
        }

        controller.SetProgress(.25);
        controller.SetMessage("Closing dependant processes...");
        await Task.Delay(2000);
        controller.SetProgress(.50);
        controller.SetMessage("Uninstalling legacy version...");
        await Task.Delay(2000);
        controller.SetProgress(.75);
        controller.SetMessage("Installing new version...");
        await Task.Delay(2000);
        controller.SetProgress(.100);

        await controller.CloseAsync();
        await this.ShowMessageAsync("Success!", "Update installed successfully.");
    }

当它遇到某些代码段时报告其进度。以下是该方法的内容，以防有帮助：

 public static int thirdPartyApplicationInstallWorkflow(Tuple<ThirdPartyUpdate.InstalledApplicationFromRegistryScan, ThirdPartyUpdate.ManifestRequiredApplication, ThirdPartyUpdate.RequiredApplicationState> thirdPartyApp)
    {
        // 1. Close listed process
        // 2. Execute explicit uninstall
        // 3. Execute WMI uninstall
        // 4. Execute install/command          

        writeEvent(EventLogEntryType.Information, "Beginning execution of: " + thirdPartyApp.Item2.Name + " job.", "Third Party Update");

        //Close processes prior to upgrade if needed
        closeProcesses(thirdPartyApp);

        //Execute explicit uninstall if needed
        uninstallExplicit(thirdPartyApp);

        //Execute WMI uninstall if needed
        uninstallWMI(thirdPartyApp);

        //Execute install
        if (!string.IsNullOrEmpty(thirdPartyApp.Item2.InstallString))
        {
            //String cleanup on comma placement so that a few different input styles are valid
            string cleanedstrInstall = thirdPartyApp.Item2.InstallString.Replace(", ", ",").Replace(" ,", ",").Replace(" , ", ",");
            List<string> strInstall = cleanedstrInstall.Split(',').ToList<string>();
            int installExitCode = 0;
            DateTime timeLaunched;
            DateTime timeCompleted;

            foreach (var install in strInstall)
            {
                ProcessStartInfo procStartInfo = new ProcessStartInfo("cmd.exe", "/c " + thirdPartyApp.Item2.InstallString);
                // The following commands are needed to redirect the standard output.
                // This means that it will be redirected to the Process.StandardOutput StreamReader.
                procStartInfo.RedirectStandardOutput = true;
                procStartInfo.RedirectStandardError = true;
                procStartInfo.UseShellExecute = false;
                // Do not create the black window.
                procStartInfo.CreateNoWindow = true;
                // Now we create a process, assign its ProcessStartInfo and start it
                System.Diagnostics.Process proc = new System.Diagnostics.Process();
                proc.StartInfo = procStartInfo;
                writeEvent(EventLogEntryType.Information, "Attempting to launch upgrade: " + thirdPartyApp.Item2.InstallString, "Third Party Update");
                timeLaunched = DateTime.UtcNow;
                proc.Start();
                string stderror = proc.StandardError.ReadToEnd();
                proc.WaitForExit();
                timeCompleted = DateTime.UtcNow;
                if (proc.ExitCode == 0 || proc.ExitCode == 3010)
                {
                    writeEvent(EventLogEntryType.Information, "Successfully completed upgrade from: " + thirdPartyApp.Item2.InstallString, "Third Party Update");
                }
            }       
        }
        return 0;
    }

public static int thirdpartyaapplication安装工作流（元组thirdPartyApp）
{
//1.封闭式流程
//2.执行显式卸载
//3.执行WMI卸载
//4.执行安装/安装命令
writeEvent（EventLogEntryType.Information，“开始执行：”+thirdPartyApp.Item2.Name+“作业”，“第三方更新”）；
//如果需要，请在升级之前关闭流程
封闭过程（第三方PP）；
//如果需要，执行显式卸载
第三方（第三方PP）；
//如果需要，执行WMI卸载
第三方（第三方）；
//执行安装
如果（！string.IsNullOrEmpty（thirdPartyApp.Item2.InstallString））
{
//逗号位置上的字符串清理，以便几个不同的输入样式有效
string cleanedstrInstall=thirdPartyApp.Item2.InstallString.Replace（“，”，“，”）.Replace（“，”，“，”）.Replace（“，”，”）.Replace（“，”，”）；
List strInstall=cleanedstrInstall.Split（'，'）.ToList（）；
int installExitCode=0；
时间启动的日期时间；
完成日期时间；
foreach（在strInstall中安装var）
{
ProcessStartInfo procStartInfo=新的ProcessStartInfo（“cmd.exe”，“/c”+thirdPartyApp.Item2.InstallString）；
//重定向标准输出需要以下命令。
//这意味着它将被重定向到Process.StandardOutput StreamReader。
procStartInfo.RedirectStandardOutput=true；
procStartInfo.RedirectStandardError=true；
procStartInfo.UseShellExecute=false；
//不要创建黑色窗口。
procStartInfo.CreateNoWindow=true；
//现在我们创建一个进程，分配它的ProcessStartInfo并启动它
System.Diagnostics.Process proc=新的System.Diagnostics.Process（）；
proc.StartInfo=procStartInfo；
writeEvent（EventLogEntryType.Information，“正在尝试启动升级：”+thirdPartyApp.Item2.InstallString，“第三方更新”）；
timeLaunched=DateTime.UtcNow；
proc.Start（）；
字符串stderror=proc.StandardError.ReadToEnd（）；
进程WaitForExit（）；
timeCompleted=DateTime.UtcNow；
如果（proc.ExitCode==0 | | proc.ExitCode==3010）
{
writeEvent（EventLogEntryType.Information，“已成功完成从以下位置的升级：”+thirdPartyApp.Item2.InstallString，“第三方更新”）；
}
}       
}
返回0；
}

只需委托控制器上的SetProgress功能即可

var controller = await this.ShowProgressAsync("Please wait...", "Progress message");

在某处定义以下委托：

public delegate void UpdateProgressFunc(double value);

更改方法thirdPartyApplicationInstallWorkflow以将此委托添加为方法参数：

public static void thirdPartyApplicationInstallWorkflow(App app, UpdateProgressFunc UpdateProgress);

然后在此函数中，在不同的阶段，只需调用：

UpdateProgress(PERCENT);

UpdateProgress(PERCENT);