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            IPHostEntry dnstoip = new IPHostEntry();
            dnstoip = Dns.Resolve("www.xxx.com");
            connString = @"server=";
            ipaddr = dnstoip.AddressList[0].ToString();
            constr=@",1433; integrated security = true; database = mydatabase";
            connString += ipaddr + constr;

Ï൱Óڵõ½ÁËconnString="server=999.999.999.999,9999;integrated security = true; database = mydatabase;ÕâÑùµÄÁ¬½ÓÓï¾ä.
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