我在外部服务器上有一个SQL服务器和数据库设置(为了这个目的,让我们调用域名“hello.com”),我想通过C#程序连接到这个服务器。到目前为止,我有这个(所有服务器/数据库的详细信息都与实际不同):
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());
}
}
这给了我一条错误消息:
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SQLWorkbench现在查询数据库。
有什么想法吗?
答案 0 :(得分:5)
您需要MySQL
驱动程序:
http://dev.mysql.com/downloads/connector/net/
然后,您可以使用MySqlConnection
连接类进行连接。
MySqlConnection connection = new MySqlConnection(connectionString);
http://www.codeproject.com/Articles/43438/Connect-C-to-MySQL
答案 1 :(得分:3)
您无法使用SqlConnection
对象连接到MySQL数据库,导入其dll后应使用MySqlConnection