如何取得局域网主机的共享文件夹？

如题：） 
谢谢。贡献一段代码，监测主机是否存在Sqlserver数据库。        private bool GetSqlServerInfo(string strHostName)
        {
            bool bolConnectionInfo = false;
            SQLDMO.Application sap = new SQLDMO.ApplicationClass();
            SQLDMO.NameList servers = sap.ListAvailableSQLServers();
            string _strHostName = string.Empty;
            if (strHostName.ToUpper() == Dns.GetHostName().ToUpper())
            {
                _strHostName = "(local)";
            }
            else
            {
                _strHostName = strHostName;
            }            for (int i = 0; i < servers.Count; i++)
            {
                object svr = servers.Item(i + 1);                if (string.Equals(_strHostName, svr.ToString()))
                {
                    bolConnectionInfo = true;
                    break;
                }
            }
            return bolConnectionInfo;
        }