我已经看过很多关于此搜索从Google搜索中返回的帖子，但是他们中提到的解决方案都没有为我清楚。所以，我以为我会尝试自己。
在这段代码之后：
PowerPoint.Application powerPoint = new Microsoft.Office.Interop.PowerPoint.Application();
powerPoint.Visible = Office.MsoTriState.msoTrue;
Microsoft.Office.Interop.PowerPoint.Presentation ppt = null;enter code here
我可以发出ppt.Quit（）;命令和Powerpoint将关闭，没有进程继续运行。
但是，如果在此代码之后我执行此操作：
ppt = powerPoint.Presentations.Open(localCopyOfPPT,
Microsoft.Office.Core.MsoTriState.msoCTrue,
Microsoft.Office.Core.MsoTriState.msoTriStateMixed,
Microsoft.Office.Core.MsoTriState.msoTrue);
ppt.Close();
powerPoint.Quit();
然后，Quit（）将无效。关于打开演示文稿的东西，即使我然后关闭它，也会阻止Quit（）工作，它会出现。
有人对我如何让应用程序退出正确的任何想法？
答案 0 :(得分：6)
以下知识库文章可能会帮助您解决问题的根源。 http://support.microsoft.com/kb/317109
您可能需要在ppt实例上明确调用System.Runtime.InteropServices.Marshal.ReleaseComObject。
答案 1 :(得分：3)
powerPoint.Presentations.Open（..）
请注意使用Presentations对象。 COM使用基于引用计数的手动内存管理，每个COM接口都有AddRef（）和Release（）方法。获取对象时，AddRef调用是自动的。完成后，您必须调用Release（）方法。在此处使用Presentations对象添加对Presentations对象的引用。这反过来又添加了对内部应用程序对象的引用。
这与.NET框架中的内存管理非常不兼容。它是自动的，垃圾收集器负责处理它。它也适用于COM对象，interop包装器有一个终结器，当它看到COM对象上没有遗留任何.NET引用时，它会减少引用计数。
也许你会看到它的发展方向：在发布所有对象引用之前，PowerPoint无法退出。在垃圾收集器运行并且终结器线程完成之前，这是不可能发生的。您对Quit（）方法的调用不使垃圾收集器运行。只有GC.Collect（）+ GC.WaitForPendingFinalizers可以做到这一点。
您也可以采用手动方式。它需要Marshal.ReleaseComObject（）。这样做很难做到，请注意，您没有对代码中任何位置存储的Presentations对象的引用。您必须完全重写代码以跟踪这些引用，以便您可以在它们上调用ReleaseComObject（）。
我不能推荐这个。如果您真的确实希望PowerPoint退出，那么更好的方法是确保所有引用都为null并调用GC.Collect（）和GC.WFPF。我也不能推荐这个。它最终会退出。别担心。
答案 2 :(得分：3)
替代您的问题。在工作完成后找到该流程，然后将其删除。
<强>码
Process[] processes = Process.GetProcessesByName("powerpnt");
for (int i = 0; i < processes.Count(); i++)
{
processes[i].Kill();
}
命名空间： System.Diagnostics
答案 3 :(得分：2)
我在工作中面临同样的问题......你尝试下面的代码工作
PowerPoint.Application powerPoint = new Microsoft.Office.Interop.PowerPoint.Application();
//powerPoint.Visible = Office.MsoTriState.msoTrue;
Microsoft.Office.Interop.PowerPoint.Presentation ppt = null;
try
{
ppt = powerPoint.Presentations.Open(localCopyOfPPT,
Microsoft.Office.Core.MsoTriState.msoCTrue,
Microsoft.Office.Core.MsoTriState.msoTriStateMixed,
Microsoft.Office.Core.MsoTriState.msoFalse);
ppt.Close();
Marshal.FinalReleaseComObject(ppt);
}catch(){}finally
{
powerPoint.Quit();
Marshal.FinalReleaseComObject(powerPoint);
GC.Collect();
}
答案 4 :(得分：2)
尝试以下方法。
GC.Collect();
GC.WaitForPendingFinalizers();
您可能也必须以这种方式使用
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
因为，请参阅此页面的最后一点http://code.msdn.microsoft.com/office/CSAutomatePowerPoint-b312d416
答案 5 :(得分：1)
如果您打开了多个PowerPoint实例，可以使用这些内容 - 这是我发现关闭PowerPoint应用程序时最简单的方法，当被要求退出时，这些应用程序无法清除。
这就是我最终杀死/关闭PowerPoint（由已打开的文档路径指定）的方式
/// <summary>
/// Close open PowerPoint document
/// </summary>
/// <param name="path">Path to document</param>
/// <param name="saveChanges">Save changes to document</param>
public void PowerPointCloseOpenDocument(String path, Boolean saveChanges = true)
{
ppApp = getPowerPointApp(path);
PowerPoint.Presentation pp = null;
if (!String.IsNullOrEmpty(path))
{
foreach (PowerPoint.Presentation p in ppApp.Presentations)
{
if (p.FullName.Equals(path, StringComparison.CurrentCultureIgnoreCase))
{
try
{
pp = p;
}
catch (Exception)
{ }
break;
}
}
}
if(saveChanges)
{
if(pp!=null)
{
pp.Save();
}
}
if(pp!= null)
{
Marshal.FinalReleaseComObject(pp);
}
if(null != ppApp)
{
Marshal.FinalReleaseComObject(ppApp);
}
var procs = FileUtil.WhoIsLocking(path);
if(procs!= null)
{
foreach(var proc in procs)
{
proc.Kill();
}
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
private PowerPoint.Application getPowerPointApp(String path = "")
{
try
{
PowerPoint.Application ppapp = null;
try
{
if (!String.IsNullOrEmpty(path))
{
ppapp = ((PowerPoint.Presentation)System.Runtime.InteropServices.Marshal.BindToMoniker(path)).Application;
}
}
catch (Exception) { }
if (ppapp == null)
{
try
{
ppapp = (PowerPoint.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("PowerPoint.Application");
}
catch (Exception)
{
ppapp = new PowerPoint.Application();
ppapp.Visible = Microsoft.Office.Core.MsoTriState.msoTrue;
}
}
if (ppapp != null)
{
ppapp.DisplayAlerts = Microsoft.Office.Interop.PowerPoint.PpAlertLevel.ppAlertsNone;
}
try { ppapp.Activate(); }
catch (Exception) { }
return ppapp;
}
catch (Exception)
{
return (PowerPoint.Application)Activator.CreateInstance(Type.GetTypeFromProgID("PowerPoint.Application"));
}
}
File Util类，它为您提供当前锁定文档的进程列表。
static public class FileUtil
{
[StructLayout(LayoutKind.Sequential)]
struct RM_UNIQUE_PROCESS
{
public int dwProcessId;
public System.Runtime.InteropServices.ComTypes.FILETIME ProcessStartTime;
}
const int RmRebootReasonNone = 0;
const int CCH_RM_MAX_APP_NAME = 255;
const int CCH_RM_MAX_SVC_NAME = 63;
enum RM_APP_TYPE
{
RmUnknownApp = 0,
RmMainWindow = 1,
RmOtherWindow = 2,
RmService = 3,
RmExplorer = 4,
RmConsole = 5,
RmCritical = 1000
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
struct RM_PROCESS_INFO
{
public RM_UNIQUE_PROCESS Process;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCH_RM_MAX_APP_NAME + 1)]
public string strAppName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCH_RM_MAX_SVC_NAME + 1)]
public string strServiceShortName;
public RM_APP_TYPE ApplicationType;
public uint AppStatus;
public uint TSSessionId;
[MarshalAs(UnmanagedType.Bool)]
public bool bRestartable;
}
[DllImport("rstrtmgr.dll", CharSet = CharSet.Unicode)]
static extern int RmRegisterResources(uint pSessionHandle,
UInt32 nFiles,
string[] rgsFilenames,
UInt32 nApplications,
[In] RM_UNIQUE_PROCESS[] rgApplications,
UInt32 nServices,
string[] rgsServiceNames);
[DllImport("rstrtmgr.dll", CharSet = CharSet.Auto)]
static extern int RmStartSession(out uint pSessionHandle, int dwSessionFlags, string strSessionKey);
[DllImport("rstrtmgr.dll")]
static extern int RmEndSession(uint pSessionHandle);
[DllImport("rstrtmgr.dll")]
static extern int RmGetList(uint dwSessionHandle,
out uint pnProcInfoNeeded,
ref uint pnProcInfo,
[In, Out] RM_PROCESS_INFO[] rgAffectedApps,
ref uint lpdwRebootReasons);
/// <summary>
/// Find out what process(es) have a lock on the specified file.
/// </summary>
/// <param name="path">Path of the file.</param>
/// <returns>Processes locking the file</returns>
/// <remarks>See also:
/// http://msdn.microsoft.com/en-us/library/windows/desktop/aa373661(v=vs.85).aspx
/// http://wyupdate.googlecode.com/svn-history/r401/trunk/frmFilesInUse.cs (no copyright in code at time of viewing)
///
/// </remarks>
static public List<Process> WhoIsLocking(string path)
{
uint handle;
string key = Guid.NewGuid().ToString();
List<Process> processes = new List<Process>();
int res = RmStartSession(out handle, 0, key);
if (res != 0) throw new Exception("Could not begin restart session. Unable to determine file locker.");
try
{
const int ERROR_MORE_DATA = 234;
uint pnProcInfoNeeded = 0,
pnProcInfo = 0,
lpdwRebootReasons = RmRebootReasonNone;
string[] resources = new string[] { path }; // Just checking on one resource.
res = RmRegisterResources(handle, (uint)resources.Length, resources, 0, null, 0, null);
if (res != 0) throw new Exception("Could not register resource.");
//Note: there's a race condition here -- the first call to RmGetList() returns
// the total number of process. However, when we call RmGetList() again to get
// the actual processes this number may have increased.
res = RmGetList(handle, out pnProcInfoNeeded, ref pnProcInfo, null, ref lpdwRebootReasons);
if (res == ERROR_MORE_DATA)
{
// Create an array to store the process results
RM_PROCESS_INFO[] processInfo = new RM_PROCESS_INFO[pnProcInfoNeeded];
pnProcInfo = pnProcInfoNeeded;
// Get the list
res = RmGetList(handle, out pnProcInfoNeeded, ref pnProcInfo, processInfo, ref lpdwRebootReasons);
if (res == 0)
{
processes = new List<Process>((int)pnProcInfo);
// Enumerate all of the results and add them to the
// list to be returned
for (int i = 0; i < pnProcInfo; i++)
{
try
{
processes.Add(Process.GetProcessById(processInfo[i].Process.dwProcessId));
}
// catch the error -- in case the process is no longer running
catch (ArgumentException) { }
}
}
else throw new Exception("Could not list processes locking resource.");
}
else if (res != 0) throw new Exception("Could not list processes locking resource. Failed to get size of result.");
}
finally
{
RmEndSession(handle);
}
return processes;
}
}