C＃将用户变量错误地发送到MYSQL

如何解决C＃将用户变量错误地发送到MYSQL

这是一小段代码，我将它们组合在一起以测试功能，然后再将类似的代码实现到更大且无关的项目中。我进行了搜索，发现并找到了有效的点点滴滴代码，甚至找到了一个与相同问题非常相似的示例（我已经检查过，并且没有人遇到的相同错误）。也就是说，我仍然没有获得所需的结果。也许我因为看了太久而“看不懂我的代码”，却错过了一些真正基础的东西？任何反馈将不胜感激，以帮助我走出困境！

此代码在表单上实现。每次我按下“添加新行”按钮时，都会将三个文本框的行拖放到表单上。用户应填写方框及其响应（无论他们添加了多少行数据，都应将它们添加到MYSQL中名为“ autolottest”的表中。该表具有3列：“ Make”，“ Color”和“ “名称”。下面的代码在autolottest中呈现以下用户输入：@ make，@ color和@name，无论用户在文本框中输入什么内容，需要注意的是，我没有设置存储过程在MYSQL中...正在尝试将其发送过来而不创建存储过程。

private void btnAddNewRow_Click(object sender,EventArgs e)
{
        iteration = 0;

        AutoLotTable = new DataTable();
        AutoLotTable.Columns.Add("Make",typeof(string));
        AutoLotTable.Columns.Add("Color",typeof(string));
        AutoLotTable.Columns.Add("Name",typeof(string));

        TextBox txt_Make = new TextBox();
        this.Controls.Add(txt_Make);
        txt_Make.Size = new Size(100,20);
        txt_Make.Name = "txt_Make" + iteration.ToString();
        txt_Make.Top =  leftControl * 24;
        txt_Make.Left = 12;
        txt_Make.DataBindings.Add("Text",AutoLotTable,"Make");
        
        TextBox txt_Color = new TextBox();
        this.Controls.Add(txt_Color);
        txt_Color.Size = new Size(100,20);
        txt_Color.Name = "txt_Color" + iteration.ToString();
        txt_Color.Top = txt_Make.Top;
        txt_Color.Left = 116;
        txt_Color.DataBindings.Add("Text","Color");
     
        TextBox txt_Name = new TextBox();
        this.Controls.Add(txt_Name);
        txt_Name.Size = new Size(100,20);
        txt_Name.Name = "txt_Make" + iteration.ToString();
        txt_Name.Top = txt_Make.Top;
        txt_Name.Left = 222;
        txt_Name.DataBindings.Add("Text","Name");

        for (int i = 0; i<iteration;i++)
        {
            DataRow row = AutoLotTable.NewRow();
            row["Make"] = txt_Make.Text;
            row["Color"] = txt_Color.Text;
            row["Name"] = txt_Name.Text;
            AutoLotTable.Rows.Add(row);
        }

        MySqlParameter make = new MySqlParameter();
        make.ParameterName = "@Make";
        make.DbType = DbType.String;
        make.Direction = ParameterDirection.Input;
        make.Value = txt_Make.Text;

        MySqlParameter color = new MySqlParameter();
        color.ParameterName = "@Color";
        color.DbType = DbType.String;
        color.Direction = ParameterDirection.Input;
        color.Value = txt_Color.Text;

        MySqlParameter name = new MySqlParameter();
        name.ParameterName = "@Name";
        name.DbType = DbType.String;
        name.Direction = ParameterDirection.Input;
        name.Value = txt_Name.Text;


        MySqlCommand InsertCommand = new MySqlCommand("Insert into autolottest(Make,Color,Name) values (@Make,@Color,@Name)",AutoLotConnection);
        InsertCommand.Parameters.AddWithValue("@Make",make);
        InsertCommand.Parameters.AddWithValue("@Color",color);
        InsertCommand.Parameters.AddWithValue("@Name",name);
        InsertCommand.Prepare();
        InsertCommand.ExecuteNonQuery();
        InsertCommand.Dispose();


        iteration++;
        leftControl++;


}