Question

I know how to insert String:

MySqlConnection connection = new MySqlConnection();
connection .Open();
MySqlCommand command = connection.CreateCommand();
command.CommandText = "INSERT INTO User ('username') VALUE ('David')");
command.ExecuteNonQuery();
connection.Close();

How can I insert binary data using varBinary?

Answer 1

You can insert string as is –

command.CommandText = "INSERT INTO User (username) VALUE ('David')");

Also, you can insert data as a hex value, use Encoding.GetBytes method to get array of butes, then convert bytes to a hex string (write special function), the result should be like this –

command.CommandText = "INSERT INTO User (username) VALUE (0x4461766964)");