请参阅:

http://forums.asp.net/t/1334649.aspx [ http://www.sqlservercentral.com/Forums/Topic936712-149-1.aspx [ ^ ]

问候，
爱德华(Eduard)

See this:

http://forums.asp.net/t/1334649.aspx[^]

http://www.sqlservercentral.com/Forums/Topic936712-149-1.aspx[^]

Regards,
Eduard

检查是否允许在SQL Server中进行远程连接
配置SQL Server

check you allow remote connection in sql server
configure SQL Server

基本上，当您无法连接到SQL Server时，问题可能是:
1)网络问题，
2)SQL Server配置问题.
3)防火墙问题，
4)客户端驱动程序问题，
5)应用程序配置问题.
6)身份验证和登录问题.

Basically, when you failed to connect to your SQL Server, the issue could be:
1) Network issue,
2) SQL Server configuration issue.
3) Firewall issue,
4) Client driver issue,
5) Application configuration issue.
6) Authentication and logon issue.

检查这些
解决SQL连接问题的步骤 [ ^ ]
SQL Server 2005连接性问题疑难解答-第一部分 [对SQL Server 2005中的连接问题进行故障排除-第二部分 [ ^ ]
对SQL Server 2005中的连接问题进行故障排除-第III部分 [ ^ ]

顺便说一句，也检查这堆是否有未来的错误

Check these
Steps to troubleshoot SQL connectivity issues[^]
SQL Server 2005 Connectivity Issue Troubleshoot - Part I[^]
Troubleshoot Connectivity Issue in SQL Server 2005 - Part II[^]
Troubleshoot Connectivity Issue in SQL Server 2005 - Part III[^]

BTW check this bunch also for future errors