using System;using System.Collections.Generic;using System.Text;using System.Diagnostics; namespace Utils{    /// <summary>    /// <para>　</para>    /// 　常用工具类——系统日志类    /// <para>　---------------------------------------------------</para>    /// <para>　WriteEventLog：写入系统日志(２个方法重载)</para>    /// <para>　DelEventName：删除日志事件源分类</para>    /// </summary>    public class EventLogHelper    {        #region 写入系统日志        /// <summary>        /// 写入系统日志        /// </summary>        /// <param name="EventName">事件源名称</param>        /// <param name="LogStr">日志内容</param>        public static void WriteEventLog(string EventName, string LogStr)        {            try            {                if (!EventLog.SourceExists(EventName))                {                    EventLog.CreateEventSource(EventName, EventName);                }                EventLog.WriteEntry(EventName, LogStr);            }            catch (Exception)            {            }        }        /// <summary>        /// 写入系统日志        /// </summary>        /// <param name="EventName">事件源名称</param>        /// <param name="LogType">日志类型</param>        /// <param name="LogStr">日志内容</param>        public static void WriteEventLog(string EventName, string LogStr, EventLogEntryType LogType)        {            try            {                if (!EventLog.SourceExists(EventName))                {                    EventLog.CreateEventSource(EventName, EventName);                }                EventLog.WriteEntry(EventName, LogStr, LogType);            }            catch (Exception)            {            }        }        #endregion         #region 删除日志事件源分类        /// <summary>        /// 删除日志事件源分类        /// </summary>        /// <param name="EventName">事件源名</param>        /// <returns></returns>        public static bool DelEventName(string EventName)        {            bool flag = false;            try            {                if (EventLog.SourceExists(EventName))                {                    EventLog.DeleteEventSource(EventName,".");                    flag = true;                }            }            catch (Exception)            {            }            return flag;        }        #endregion    }}