net中如何启动windows服务?

最新推荐文章于 2022-01-29 21:19:01 发布

转载最新推荐文章于 2022-01-29 21:19:01 发布 · 1k 阅读

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#windows #service #string #null #query

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本文提供了一个使用C#代码启动Windows服务的示例，并展示了如何处理服务已启用、禁用等情况。通过枚举和WMI接口实现了服务状态检查及更改启动模式的功能。

enum StartServiceResult
    {
        Success = 0,
        AccessDenied = 2,
        ServiceAlreadyRunning = 10,
        ServiceDisabled = 14
    }

    /// <returns>error message, if any</returns>
    static string StartService(string serviceName)
    {
        string errMsg = string.Format("Unable to open '{0}' service", serviceName);
        string query = string.Format("select * from Win32_Service where Name='{0}'", serviceName);
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);

        foreach(ManagementObject obj in searcher.Get())
        {
            uint result = (uint)obj.InvokeMethod("StartService", null);
            switch ((StartServiceResult)result)
            {
                case StartServiceResult.Success:
                case StartServiceResult.ServiceAlreadyRunning:
                    errMsg = null;
                    break;
                case StartServiceResult.ServiceDisabled:
                    result = (uint)obj.InvokeMethod("ChangeStartMode", new string[] { "Automatic" });
                    if ((StartServiceResult)result == StartServiceResult.Success)
                    {
                        errMsg = StartService( serviceName );
                    }
                    else
                    {
                        errMsg = string.Format("Error Changing Service Start Mode: ({0})", result);
                    }
                    break;
                default:
                    errMsg = string.Format("Error Starting Service: ({0})", result);
                    break;
            }
            break;
        }

        if( errMsg != null )
        {
           // wait until service's status is Running or time-out
        }

        return errMsg;
    }