insert directly from application to database

string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
try
{
    using (SqlConnection connect = new SqlConnection(connectionString))
    {
        SqlCommand command = new SqlCommand();
        command.Connection = connect;
        command.CommandText = "insert into customer(name, address) values(@name, @address)";
        command.Parameters.Add(new SqlParameter("@name", SqlDbType.VarChar));
        command.Parameters.Add(new SqlParameter("@address", SqlDbType.VarChar));
        command.Parameters["@name"].Value = name.Text.ToLower();
        command.Parameters["@address"].Value = address.Text.ToLower();
        connect.Open();
    }
}