private static void Setupsql()
{
    string connectionString = "server=hello.com; database=db1; uid=user1; pwd=xxxxx;";
    connection = new sqlConnection();
    connection.ConnectionString = connectionString;
    try
    {
        connection.Open();
        Console.WriteLine("Connected");
    }
    catch (Exception e)
    {
        Console.WriteLine(e.Message.ToString());
    }
}

这给了我一条错误信息：

A network-related or instance-specific error occurred while establishing a connection to sql Server. The server was not found or was not accessible. Verify that the instance name is correct and that sql Server is configured to allow remote connections. (provider: Named Pipes Provider,error: 40 - Could not open a connection to sql Server)

我检查了所有连接字符串,并且允许远程访问,因为我已经在同一台计算机上打开查询数据库的sqlWorkbench.

有任何想法吗？