从MS-Word ApplicationClass获取PID？

Question

考虑以下代码：

using Microsoft.Office.Interop.Word;

ApplicationClass _application = new ApplicationClass();

我可以从_application启动的Winword.exe进程中获取PID吗？

我需要PID因为文件损坏，我只是不能退出ApplicationClass，即使使用这段代码：

_application.Quit(ref saveFile, ref missing, ref missing);
System.Runtime.InteropServices.Marshal.ReleaseComObject(_application);
GC.Collect();
GC.WaitForPendingFinalizers();

我无法搜索winword.exe进程并将其杀死，因为我会有几个，而且我不知道要杀哪个。如果我可以为每个ApplicationClass获取一个PID，我可能会杀死正确的winword.exe进程，这会给我带来麻烦。

Answer 1

这是怎么做的。

//Set the AppId
string AppId = ""+DateTime.Now.Ticks(); //A random title

//Create an identity for the app

this.oWordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
this.oWordApp.Application.Caption = AppId;
this.oWordApp.Application.Visible = true;

while (GetProcessIdByWindowTitle(AppId) == Int32.MaxValue) //Loop till u get
{
    Thread.Sleep(5);
}

///Get the pid by for word application
this.WordPid = GetProcessIdByWindowTitle(AppId);

///You canh hide the application afterward            
this.oWordApp.Application.Visible = false;

/// <summary>
/// Returns the name of that process given by that title
/// </summary>
/// <param name="AppId">Int32MaxValue returned if it cant be found.</param>
/// <returns></returns>
public static int GetProcessIdByWindowTitle(string AppId)
{
   Process[] P_CESSES = Process.GetProcesses();
   for (int p_count = 0; p_count < P_CESSES.Length; p_count++)
   {
        if (P_CESSES[p_count].MainWindowTitle.Equals(AppId))
        {
                    return P_CESSES[p_count].Id;
        }
   }

    return Int32.MaxValue;
}

Answer 2

Word文件中可能存在一些错误。因此，当您使用Word.ApplicationClass.Documents.Open()方法打开文件时，将显示一个对话框，并且该过程将挂起。

请改用Word.ApplicationClass.Documents.OpenNoRepairDialog()。我发现它解决了这个问题。

Answer 3

通常的方法是将Word的标题更改为唯一的标题，然后跳过顶级窗口列表，直到找到它（EnumWindows）。

Answer 4

http://www.codekeep.net/snippets/7835116d-b254-466e-ae66-666e4fa3ea5e.aspx

///Return Type: DWORD->unsigned int
///hWnd: HWND->HWND__*
///lpdwProcessId: LPDWORD->DWORD*
[System.Runtime.InteropServices.DllImportAttribute( "user32.dll", EntryPoint = "GetWindowThreadProcessId" )]
public static extern int GetWindowThreadProcessId ( [System.Runtime.InteropServices.InAttribute()] System.IntPtr hWnd, out int lpdwProcessId );


private int _ExcelPID = 0;
Process _ExcelProcess;

private Application _ExcelApp = new ApplicationClass();
GetWindowThreadProcessId( new IntPtr(_ExcelApp.Hwnd), out _ExcelPID );
_ExcelProcess = System.Diagnostics.Process.GetProcessById( _ExcelPID );

...

_ExcelProcess.Kill();

Answer 5

不，遗憾的是，没有办法将ApplicationClass的实例与正在运行的Word进程相关联。

为什么你需要杀死Word的实例？难道你不能要求它关闭所有文件然后停止使用该实例吗？如果你最终删除了对该类的所有引用，那么GC将启动并取下COM服务器。

Answer 6

在启动应用程序之前，列出所有正在运行的Word进程，启动应用程序，然后再次列出正在运行的Word进程。在第二个列表中找到但在第一个列表中找不到的过程是正确的：

var oPL1 = from proc in Process.GetProcessesByName("WINWORD") select proc.Id;
var app = new Word.Application();

var oPL2 = from proc in Process.GetProcessesByName("WINWORD") select proc.Id;
var pid = (from p in oPL2 where !oPL1.Contains(p) select p).ToList()[0];

该方法有明显的时间问题，但它是我发现的唯一一个在大多数情况下可靠运行的方法。

Answer 7

enter code here  public void OpenWord(string Path, bool IsVisible)
    {

        MessageFilter.Register();
        object oMissing = Missing.Value;
        GUIDCaption = Guid.NewGuid().ToString();
        wordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
        wordApp.Visible = IsVisible;
        wordApp.Caption = GUIDCaption;
        object oPath = Path;
        wordDoc = wordApp.Documents.Open(ref  oPath, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing);

    }
    /// <summary>
    /// 关闭文件
    /// </summary>
    public void CloseWord()
    {
        object oMissing = Missing.Value;
        GUIDCaption = "";
        if (null != wordDoc)
        {
            wordDoc.Close(ref oMissing, ref oMissing, ref oMissing);
        }
        if (null != wordApp)
        {
            wordApp.Quit(ref oMissing, ref oMissing, ref oMissing);
        }
        MessageFilter.Revoke();
        GC.Collect();
        KillwordProcess();

    }
    /// <summary>
    /// 结束word进程
    /// </summary>
    public void KillwordProcess()
    {
        try
        {
            Process[] myProcesses;
            //DateTime startTime;
            myProcesses = Process.GetProcessesByName("WINWORD");

            //通过进程窗口标题判断
            foreach (Process myProcess in myProcesses)
            {
                if (null != GUIDCaption && GUIDCaption.Length > 0 && myProcess.MainWindowTitle.Equals(GUIDCaption))
                {
                    myProcess.Kill();
                }
            }
            MessageFilter.Revoke();
        }
        catch (Exception e)
        {
            throw e;
        }
    }