获取Windows服务的PID

Question

谁能帮助我知道如何获得Windows服务的PID？
我需要获取PID才能运行以下命令:

Process.Start(new ProcessStartInfo 
    {
        Filename = "cmd.exe",
        CreateNoWindow = true,
        UseShellExecute = false,
        Arguments = string.Format("/c taskkill /pid {0} /f", pidnumber)
    });

Answer 1

另一个答案忽略的是,单个进程也可以托管多个自治服务.这个svchost.exe过程的多个实例,每个实例都有几个服务,就是最好的例子.

因此,一般来说,通过杀死它的托管进程来尝试杀死任意服务是绝对不安全的(我认为这是你尝试做的,因为你提到taskkill.exe).您可以在此过程中删除多个不相关的服务.

如果您确实知道服务的流程只托管您关心的服务,那么您可以在他/她的答案中选择@MC建议的策略.

另外,您还可以使用ServiceController的类打开的句柄,你的服务,然后使用它(通过ServiceHandle属性)到的P/Invoke的QueryServiceStatusEx功能找到你想知道进程的ID.

如果您需要更多细节,您应该澄清您实际想要实现的目标.你的问题并不清楚.

更新这里是我从现有项目中删除的一些代码,它们可以执行您想要的操作,前提是您有一个ServiceController实例._如上所述,请小心使用!__

[StructLayout(LayoutKind.Sequential)]
internal sealed class SERVICE_STATUS_PROCESS
{
    [MarshalAs(UnmanagedType.U4)]
    public uint dwServiceType;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwCurrentState;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwControlsAccepted;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwWin32ExitCode;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwServiceSpecificExitCode;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwCheckPoint;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwWaitHint;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwProcessId;
    [MarshalAs(UnmanagedType.U4)]
    public uint dwServiceFlags;
}

internal const int ERROR_INSUFFICIENT_BUFFER = 0x7a;
internal const int SC_STATUS_PROCESS_INFO = 0;

[DllImport("advapi32.dll", SetLastError = true)]
internal static extern bool QueryServiceStatusEx(SafeHandle hService, int infoLevel, IntPtr lpBuffer, uint cbBufSize, out uint pcbBytesNeeded);

public static int GetServiceProcessId(this ServiceController sc)
{
    if (sc == null)
        throw new ArgumentNullException("sc");

    IntPtr zero = IntPtr.Zero;

    try
    {
        UInt32 dwBytesNeeded;
        // Call once to figure the size of the output buffer.
        QueryServiceStatusEx(sc.ServiceHandle, SC_STATUS_PROCESS_INFO, zero, 0, out dwBytesNeeded);
        if (Marshal.GetLastWin32Error() == ERROR_INSUFFICIENT_BUFFER)
        {
            // Allocate required buffer and call again.
            zero = Marshal.AllocHGlobal((int)dwBytesNeeded);

            if (QueryServiceStatusEx(sc.ServiceHandle, SC_STATUS_PROCESS_INFO, zero, dwBytesNeeded, out dwBytesNeeded))
            {
                var ssp = new SERVICE_STATUS_PROCESS();
                Marshal.PtrToStructure(zero, ssp);
                return (int)ssp.dwProcessId;
            }
        }
    }
    finally
    {
        if (zero != IntPtr.Zero)
        {
            Marshal.FreeHGlobal(zero);
        }
    }
    return -1;
}

Answer 2

假设您知道服务使用的EXE的名称,并且只有其中一个:

int procID = Process.GetProcessesByName("yourservice")[0].Id;

该方法Process.GetProcessesByName("yourservice")返回一个具有指定名称的进程数组,因此如果您不知道"yourservice.exe"运行多少运行,则可能需要一个foreach循环.