这个问题的原始答案现在已经超过7年了。该代码保留在https://gist.github.com/ieb/2290426上
。如果出于某种原因需要使用Windows XP，则此旧版本可能对您有用。
更好的答案是如何检查文件锁定？
我在下面复制了Eric J的答案（
using添加了语句，并且类和方法的名称与此处的旧代码相匹配）。请注意，此答案的注释可能已过期。
- 用户’Walkman’的研究正在进行中，以改进旧代码，因为在某些情况下，重新启动管理器未列出所有锁。参见Github仓库：https
- //github.com/Walkman100/FileLocks
使用方式如下：
List<Process> locks = Win32Processes.GetProcessesLockingFile(@"C:Hello.docx");
码：
using System;using System.Collections.Generic;using System.Diagnostics;using System.Runtime.InteropServices;namespace FileLockInfo{ public static class Win32Processes { /// <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.googlepre.com/svn-history/r401/trunk/frmFilesInUse.cs (no copyright in pre at time of viewing) /// </remarks> public static List<Process> GetProcessesLockingFile(string path) { uint handle; string key = Guid.NewGuid().ToString(); 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 MORE_DATA = 234; uint pnProcInfoNeeded, pnProcInfo = 0, lpdwRebootReasons = RmRebootReasonNone; string[] resources = {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 == MORE_DATA) { return EnumerateProcesses(pnProcInfoNeeded, handle, lpdwRebootReasons); } else if (res != 0) throw new Exception("Could not list processes locking resource. Failed to get size of result."); } finally { RmEndSession(handle); } return new List<Process>(); } [StructLayout(LayoutKind.Sequential)] public 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; public enum RM_APP_TYPE { RmUnknownApp = 0, RmMainWindow = 1, RmOtherWindow = 2, RmService = 3, RmExplorer = 4, RmConsole = 5, RmCritical = 1000 } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unipre)] public 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.Unipre)] static extern int RmRegisterResources(uint pSessionHandle, uint nFiles, string[] rgsFilenames, uint nApplications, [In] RM_UNIQUE_PROCESS[] rgApplications, uint 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); private static List<Process> EnumerateProcesses(uint pnProcInfoNeeded, uint handle, uint lpdwRebootReasons) { var processes = new List<Process>(10); // Create an array to store the process results var processInfo = new RM_PROCESS_INFO[pnProcInfoNeeded]; var pnProcInfo = pnProcInfoNeeded; // Get the list var res = RmGetList(handle, out pnProcInfoNeeded, ref pnProcInfo, processInfo, ref lpdwRebootReasons); if (res != 0) throw new Exception("Could not list processes locking resource."); for (int i = 0; i < pnProcInfo; i++) { try { processes.Add(Process.GetProcessById(processInfo[i].Process.dwProcessId)); } catch (ArgumentException) { } // catch the error -- in case the process is no longer running } return processes; } }}
