无法使用office interop C＃关闭powerpoint应用程序 [英] Unable to close powerpoint application using office interop C#

问题描述

亲爱的所有人，



我们正在winform应用程序中自动化MsOffice（C＃）。



目前我们正在努力创建一个powerpoint文件（以编程方式）。我们成功创建了pptx文件。



创建pptx文件后，我们试图关闭演示文稿和应用程序。它仅仅是演示文稿，但不是ppt应用程序。



MyCode



我尝试了什么：

  private   static   void  QuitApplication（PowerPointInterop.Application powerPointApplication）
 {
  if （powerPointApplication！=  null ）
 {
  try  
 {
 powerPointApplication.DisplayAlerts = PowerPointInterop.PpAlertLevel.ppAlertsNone; 
 powerPointApplication.Visible = Microsoft.Office.Core.MsoTriState.msoFalse; 
 powerPointApplication.Quit（）; 
 
 Marshal.FinalReleaseComObject（powerPointApplication.Presentations）; 
 Marshal.FinalReleaseComObject（powerPointApplication）; 
 
 powerPointApplication =  null ; 
 
 GC.Collect（）; 
 GC.WaitForPendingFinalizers（）; 
 
  //  需要调用GC两次才能获得名为 
  //    - 第一次，它只是列出了什么是 
  //  已完成，第二次，它实际上正在最终确定。只有 
  //  然后对象会自动执行ReleaseComObject。 
 GC.Collect（）; 
} 
  catch （例外）
 {
  //  忽略 
} 
} 
} 

  public   static   bool  CreateNewFile（IQuestion问题，字符串文件名）
 {
 WinUtil.DeleteFile（filename）; 
  if （File.Exists（filename））
  return  假; 
 
 PowerPointInterop.Application powerpointApplication =  null ; 
 尝试 
 {
  //  在初始化时避免屏幕闪烁或不需要的警报 
 powerpointApplication =  new  PowerPointInterop.Application（）; 
 
  //  创建演示文稿 
 PowerPointInterop.Presentation pptPresentation = powerpointApplication.Presentations.Add（MsoTriState.msoTrue）; 
 
 pptPresentation.SaveAs（filename，PowerPointInterop.PpSaveAsFileType.ppSaveAsDefault，MsoTriState.msoTriStateMixed）; 
 
 pptPresentation.Close（）; 
 powerpointApplication.Quit（）; 
 
  return   true ; 
} 
  catch （例外）
 {
  return   false ; 
} 
 最后 
 {
 QuitApplication（powerpointApplication）; 
} 
} 

参考： Office C＃app自动化C＃for Visual Studio 2010中的PowerPoint（CSAutomatePowerPoint）示例 [ ^ ]



有人可以帮助我。



谢谢

解决方案

我建​​议你阅读： Office应用程序在从Visual Studio .NET客户端自动化后不会退出 [ ^ ]

您必须使用Marshal.ReleaseComObject Method（Object）（System.Runtime.InteropServices） [ ^ ]直接在您的ppt应用程序对象上（实例）。

Dear All,

We are automating MsOffice in winform application(C#).

Currently we are working on, to create a powerpoint file(Programmatically). We are successfully created pptx file.

After creating a pptx file, we are trying to close both the presentation and application. Its clsoing only presentation, but not ppt application.

MyCode

What I have tried:

private static void QuitApplication(PowerPointInterop.Application powerPointApplication)
        {
            if (powerPointApplication != null)
            {
                try
                {
                    powerPointApplication.DisplayAlerts = PowerPointInterop.PpAlertLevel.ppAlertsNone;
                    powerPointApplication.Visible = Microsoft.Office.Core.MsoTriState.msoFalse;
                    powerPointApplication.Quit();

                    Marshal.FinalReleaseComObject(powerPointApplication.Presentations);
                    Marshal.FinalReleaseComObject(powerPointApplication);

                    powerPointApplication = null;

                    GC.Collect();
                    GC.WaitForPendingFinalizers();

                    // GC needs to be called twice in order to get the Finalizers called  
                    // - the first time in, it simply makes a list of what is to be  
                    // finalized, the second time in, it actually is finalizing. Only  
                    // then will the object do its automatic ReleaseComObject.
                    GC.Collect();
                }
                catch (Exception)
                {
                    //Ignore
                }
            }
        }

public static bool CreateNewFile(IQuestion question, string filename)
        {
            WinUtil.DeleteFile(filename);
            if (File.Exists(filename))
                return false;

            PowerPointInterop.Application powerpointApplication = null;
            try
            {
                //Avoid screen flickering or unwanted alerts while initializing
                powerpointApplication = new PowerPointInterop.Application();

                // Create the Presentation File
                PowerPointInterop.Presentation pptPresentation = powerpointApplication.Presentations.Add(MsoTriState.msoTrue);               

                pptPresentation.SaveAs(filename, PowerPointInterop.PpSaveAsFileType.ppSaveAsDefault, MsoTriState.msoTriStateMixed);

                pptPresentation.Close();
                powerpointApplication.Quit();

                return true;
            }
            catch (Exception)
            {
                return false;
            }
            finally
            {
                QuitApplication(powerpointApplication);
            }
        }

Ref: Office C# app automates PowerPoint (CSAutomatePowerPoint) sample in C# for Visual Studio 2010[^]

can anyone please help me.

Thanks

解决方案

I'd suggest to read this: Office application does not quit after automation from Visual Studio .NET client[^]
You have to "clean up" by using Marshal.ReleaseComObject Method (Object) (System.Runtime.InteropServices)[^] directly on your ppt application object (instance).

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