如何在连接字符串中使用带有用户名的ip-address？

Question

我写了这个方法，但是如果"uid“中有‘符号，它就会抛出System.ArgumentException。

        public void Init(string constr)
            {
                var server = "a222068_6.mysql.mchost.ru";
                var database = "'a222068_6'";
                var uid = "'a222068_6'@'10.0.2.13'";
                var pass = "pass";

                constr = "SERVER=" + server + ";DATABASE=" + database + ";UID=" + uid + ";PASSWORD=" + pass + ";SSL Mode=None;";
                cnt = new MySqlConnection(constr); // Exception is thrown here
            }

在没有‘’的情况下尝试连接时出现异常消息

Authentication to host 'a222068_6.mysql.mchost.ru' for user 'a222068_6@10.0.2.13' using method 'mysql_native_password' failed with message: Access denied for user 'a222068_6@10.0.2.13'@'localhost' (using password: YES)

Answer 1

变化

var uid = "'a222068_6'@'10.0.2.13'";

至

var uid = @"a222068_6@10.0.2.13";

Answer 2

使用verbatim string literal

逐字字符串文字以@开头，也用双引号括起来。

还有其他几个关于如何使用MySqlConnectionStringBuilder的StackOverflow答案，比如this one

var connectionStringBuilder = new MySqlConnectionStringBuilder
{
    Server = "<instanceIp>",
    UserID = "<userId>",
    Password = "<password>",
    Database = "<databaseName>",
    CertificateFile = @"<Path_To_The_File>\client.pfx",
    CertificatePassword = "<Password_For_The_Cert>"
};

var conn = new MySqlConnection(connectionStringBuilder.ToString())