检测主机是否有Sqlserver

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;
}