C# MySQL 在将数据插入我的表时遇到 fatal error

Question

我有一个名为“AddUser”的方法，该方法应该将数据插入到我的表中，但每当我执行它时，都会抛出 MySqlException 。

异常消息:

Fatal error encountered during command execution.

我的专栏:

Column          Type         Null   Default           Comments
Identity Number int(11)      No                       auto_increment
Full Name       varchar(32)  No          
Birthday        date         No          
Sex             varchar(6)   No          
City            varchar(32)  No          
Region          varchar(32)  No          
Zip Code        varchar(10)  No          
Country         varchar(32)  No          
Phone Number    varchar(15)  No          
Email Address   varchar(255) No          
Ticket Number   varchar(8)   No          
Registration    timestamp    No     CURRENT_TIMESTAMP

我的代码:

private MySqlConnection mySqlConnection;

private async void OpenConnection()
{
    if (mySqlConnection == null)
    {
        mySqlConnection = new MySqlConnection(ConfigurationManager.ConnectionStrings[0].ConnectionString);
    }
    await mySqlConnection.OpenAsync();
}

private async void CloseConnection()
{
    if (mySqlConnection != null)
    {
        await mySqlConnection.CloseAsync();
    }
}

private async Task<bool> AddUser(
    string fullName,
    string birthday,
    string sex,
    string city,
    string region,
    string zipCode,
    string country,
    string phoneNumber,
    string emailAddress)
{
    try
    {
        OpenConnection();
        MySqlCommand mySqlCommand = mySqlConnection.CreateCommand();
        mySqlCommand.CommandText = string.Format("INSERT INTO Users (Identity_Number, Full_Name, Birthday, Sex, City, Region, Zip_Code, Country, Phone_Number, Email_Address, Ticket_Number, Registration_Time) VALUES (@Identity_Number, @Full_Name, @Birthday, @Sex, @City, @Region, @Zip_Code, @Country, @Phone_Number, @Email_Address, @Ticket_Number, @Registration_Time);");
        mySqlCommand.Parameters.Add("@Full_Name", MySqlDbType.VarChar).Value = fullName;
        mySqlCommand.Parameters.Add("@Birthday", MySqlDbType.Date).Value = birthday;
        mySqlCommand.Parameters.Add("@Sex", MySqlDbType.VarChar).Value = sex;
        mySqlCommand.Parameters.Add("@City", MySqlDbType.VarChar).Value = city;
        mySqlCommand.Parameters.Add("@Region", MySqlDbType.VarChar).Value = region;
        mySqlCommand.Parameters.Add("@Zip_Code", MySqlDbType.VarChar).Value = zipCode;
        mySqlCommand.Parameters.Add("@Country", MySqlDbType.VarChar).Value = country;
        mySqlCommand.Parameters.Add("@Phone_Number", MySqlDbType.VarChar).Value = phoneNumber;
        mySqlCommand.Parameters.Add("@Email_Address", MySqlDbType.VarChar).Value = emailAddress;
        mySqlCommand.Parameters.Add("@Ticket_Number", MySqlDbType.VarChar).Value = Guid.NewGuid().ToString().GetHashCode().ToString("X");

        await mySqlCommand.ExecuteNonQueryAsync();



CloseConnection();
            mySqlCommand.Dispose();
            return true;
        }
        catch (MySqlException ex)
        {
            MessageBox.Show(ex.Message);
            return false;
        }
    }

有人能够检查我的代码并让我知道我做错了什么吗？也许我该如何改进我的代码？提前致谢。

Answer 1

谢谢@Plutonix 的回答。我删除了下划线，并按照您的建议使用反勾转义了其中包含空格的列名称。代码现在可以运行了。

            mySqlCommand.CommandText = string.Format("INSERT INTO Users (`Full Name`, Birthday, Sex, City, Region, `Zip Code`, Country, `Phone Number`, `Email Address`, `Ticket Number`) VALUES (@Full_Name, @Birthday, @Sex, @City, @Region, @Zip_Code, @Country, @Phone_Number, @Email_Address, @Ticket_Number);");