C#正则表达式如何取出某字符串等于号后的括号前的数据

(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = ahnu)(PORT = 1521)))(CONNECT_DATA = (SID =orcl)))如何取出host等于什么，Port等于什么，sid等于什么

 <?<=[A-Z]+\s\=>[A-Z]+

PROTOCOL=.*)?

PORT=.*)?

这样写为什么不对

``` string str = "(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = ahnu)(PORT = 1521)))(CONNECT_DATA = (SID =orcl)))";
str = str.Trim();
str=str.ToUpper();
Regex reg = new Regex(@"^(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=(\w+))(PORT=(\w+))))(CONNECT_DATA=(SID=(\w+))))$");
Match m = reg.Match(str);
if (m.Success)

搞定了

``` string str = "(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = ahnu)(PORT = 1521)))(CONNECT_DATA = (SID =orcl)))";
str = str.Trim();
Match m = Regex.Match(str, @".+?=.+?=.+?=(.+?))).+?=(.+?)))");
if (m.Success)
{
string s1 = m.Groups[1].Value;//" (PROTOCOL = TCP)(HOST = AHNU)(PORT = 1521"
string s2 = m.Groups[2].Value;// (SID =ORCL"
if (m.Success)
{
string str3 = m.Groups[1].Value;
string str4 = m.Groups[2].Value; //" (PROTOCOL = TCP)(HOST = AHNU)(PORT = 1521"
m = Regex.Match(s1, @"(.+?=.+?)(.+?=(.+?))(.+?=(.+)");
if (m.Success)
{
string host = m.Groups[1].Value;
string port = m.Groups[2].Value;
}
m = Regex.Match(s2, @"(.+?=(.+)");
if (m.Success)
{
string SID = m.Groups[1].Value;
}
}