c# – 以编程方式启用Windows服务

内容导读

互联网集市收集整理的这篇技术教程文章主要介绍了c# – 以编程方式启用Windows服务，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含3846字，纯文字阅读大概需要6分钟。

内容图文

我试图通过修改注册表中的值以编程方式启用Windows服务,如下所示.价值确实在变化.但是,之后我无法启动该服务,因为Windows仍然将其视为已禁用.

public void EnabledTheService(string serviceName)
{
    try
    {
        RegistryKey key = Registry.LocalMachine
                                   .OpenSubKey(@"SYSTEM\CurrentControlSet\Services\"
                                                       + serviceName, true);
        key.SetValue("Start", 2);                
    }
    catch (Exception ex)
    {
         Console.Write(ex.Message);
    }
}

public void StartService(string serviceName)
{
    ServiceController service = new ServiceController(serviceName);
    try
    {
        service.Start();
        service.WaitForStatus(ServiceControllerStatus.Running, 
                                            new TimeSpan(0, 0, 0, 20));
    }
    catch (Exception ex)
    {
        Console.Write(ex.Message);
    }
}

解决方法:

有几种方法可以更改Windows服务的启动类型(请参阅this question).如果我没记错,WMI方法在我测试时工作但不完全可靠,所以我使用了Windows API函数ChangeServiceConfig.我从未尝试过注册表方法.我认为这将是三个选项中最不稳定的.

请注意,如果您想要“自动(延迟启动)”模式,则需要拨打ChangeServiceConfig2.

public void ChangeServiceStartType(string serviceName, ServiceStartupType startType)
{
    //Obtain a handle to the service control manager database
    IntPtr scmHandle = OpenSCManager(null, null, SC_MANAGER_CONNECT);
    if (scmHandle == IntPtr.Zero)
    {
        throw new Exception("Failed to obtain a handle to the service control manager database.");
    }

    //Obtain a handle to the specified windows service
    IntPtr serviceHandle = OpenService(scmHandle, serviceName, SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG);
    if (serviceHandle == IntPtr.Zero)
    {
        throw new Exception($"Failed to obtain a handle to service '{serviceName}'.");
    }

    //Change the start mode
    bool changeServiceSuccess = ChangeServiceConfig(serviceHandle, SERVICE_NO_CHANGE, (uint)startType, SERVICE_NO_CHANGE, null, null, IntPtr.Zero, null, null, null, null);
    if (!changeServiceSuccess)
    {
        string msg = $"Failed to update service configuration for service '{serviceName}'. ChangeServiceConfig returned error {Marshal.GetLastWin32Error()}.";
        throw new Exception(msg);
    }

    //Clean up
    if (scmHandle != IntPtr.Zero)
        CloseServiceHandle(scmHandle);
    if (serviceHandle != IntPtr.Zero)
        CloseServiceHandle(serviceHandle);
}

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr OpenSCManager(string machineName, string databaseName, uint dwAccess);

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr OpenService(IntPtr hSCManager, string lpServiceName, uint dwDesiredAccess);

[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool ChangeServiceConfig(
    IntPtr hService,
    uint nServiceType,
    uint nStartType,
    uint nErrorControl,
    string lpBinaryPathName,
    string lpLoadOrderGroup,
    IntPtr lpdwTagId,
    [In] char[] lpDependencies,
    string lpServiceStartName,
    string lpPassword,
    string lpDisplayName);

[DllImport("advapi32.dll", EntryPoint = "CloseServiceHandle")]
private static extern int CloseServiceHandle(IntPtr hSCObject);

private const uint SC_MANAGER_CONNECT = 0x0001;
private const uint SERVICE_QUERY_CONFIG = 0x00000001;
private const uint SERVICE_CHANGE_CONFIG = 0x00000002;
private const uint SERVICE_NO_CHANGE = 0xFFFFFFFF;

public enum ServiceStartupType : uint
{
    /// <summary>
    /// A device driver started by the system loader. This value is valid only for driver services.
    /// </summary>
    BootStart = 0,

    /// <summary>
    /// A device driver started by the IoInitSystem function. This value is valid only for driver services.
    /// </summary>
    SystemStart = 1,

    /// <summary>
    /// A service started automatically by the service control manager during system startup.
    /// </summary>
    Automatic = 2,

    /// <summary>
    /// A service started by the service control manager when a process calls the StartService function.
    /// </summary>
    Manual = 3,

    /// <summary>
    /// A service that cannot be started. Attempts to start the service result in the error code ERROR_SERVICE_DISABLED.
    /// </summary>
    Disabled = 4
}

内容总结

以上是互联网集市为您收集整理的c# – 以编程方式启用Windows服务全部内容，希望文章能够帮你解决c# – 以编程方式启用Windows服务所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。

内容备注

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。

内容手机端