asp.net订阅表写入数据库

Question

Part of one of my assignments is to make a form that writes to a database when the user enters in the data. I've gotten so far but I'm getting a few errors. This is what I have so far.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;

public partial class subscribe_Registration : System.Web.UI.Page
{

protected void Page_Load(object sender, EventArgs e)
{

}

protected void Button1_Click(object sender, EventArgs e)
{
    reg.Name = txtName.Text;
    reg.Age = txtAge.Text;
    reg.Sex = txtSex.Text;
    reg.Address = txtAddress.Text;
    reg.Email = txtEmail.Text;
    reg.Phone = txtPhone.Text;
    reg.InsertRegistration();
    phSuccess.Visible = true;
}

#region Methods
public void InsertRegistration()
{
    SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Database"].ConnectionString);
    SqlCommand cmd = new SqlCommand("spRegistrationInsert", conn);
    cmd.CommandType = CommandType.StoredProcedure;
    SqlParameter parameterName = new SqlParameter("@Name", SqlDbType.VarChar, 50);
    SqlParameter parameterAge = new SqlParameter("@Age", SqlDbType.VarChar, 50);
    SqlParameter parameterSex = new SqlParameter("@Sex", SqlDbType.VarChar, 50);
    SqlParameter parameterAddress = new SqlParameter("@Address", SqlDbType.VarChar, 50);
    SqlParameter parameterEmail = new SqlParameter("@Email", SqlDbType.VarChar, 100);
    SqlParameter parameterPhone = new SqlParameter("@Phone", SqlDbType.VarChar, 100);
    parameterName.Value = txtName;
    parameterAge.Value = txtAge;
    parameterEmail.Value = txtSex;
    parameterAddress.Value = txtAddress;
    parameterEmail.Value = txtEmail;
    parameterPhone.Value = txtPhone;
    cmd.Parameters.Add(parameterName);
    cmd.Parameters.Add(parameterAge);
    cmd.Parameters.Add(parameterSex);
    cmd.Parameters.Add(parameterAddress);
    cmd.Parameters.Add(parameterEmail);
    cmd.Parameters.Add(parameterPhone);
    try
    {
        conn.Open();
        cmd.ExecuteNonQuery();
    }
    catch (Exception ex)
    {
        throw new Exception(ex.ToString());
    }
    finally
    {
        cmd.Dispose();
        conn.Close();
    }
}
}

#endregion


namespace Registration
{
    public partial class Registration : System.Web.UI.Page
 {
    #region Declarations
    Registration reg = new Registration();
    #endregion
}
}

I also have a class I made in a separate file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Configuration;
using System.Data.SqlClient;
namespace Registration
{
public class Registration
{
    #region Declaration
    public string Name { get; set; }
    public int Age { get; set; }
    public string Sex { get; set; }
    public string Address { get; set; }
    public string Email { get; set; }
    public int Phone { get; set; }
    #endregion
}


}

The errors I'm getting is

the name reg does not exist in current context

Anyone could give me any pointers where I'm going wrong?

Answer 1

The error is occuring in Button1_Click . You need to create an object of Registration class in this method.

protected void Button1_Click(object sender, EventArgs e)
{
    Registration.Registration reg = new Registration.Registration();    //Declare object of Registration class here
    reg.Name = txtName.Text;
    reg.Age = txtAge.Text;
    reg.Sex = txtSex.Text;
    reg.Address = txtAddress.Text;
    reg.Email = txtEmail.Text;
    reg.Phone = txtPhone.Text;
    reg.InsertRegistration();
    phSuccess.Visible = true;
}

Also you don't need this code.

namespace Registration
{
    public partial class Registration : System.Web.UI.Page
 {
    #region Declarations
    Registration reg = new Registration();
    #endregion
}
}

Answer 2

I think you forgot to create a instance of your Registration class. That's why it says name reg does not appear.

protected void Button1_Click(object sender, EventArgs e)
{

    //Add this part
    Registration reg = new Registration();

    reg.Name = txtName.Text;
    reg.Age = txtAge.Text;
    reg.Sex = txtSex.Text;
    reg.Address = txtAddress.Text;
    reg.Email = txtEmail.Text;
    reg.Phone = txtPhone.Text;
    reg.InsertRegistration();
    phSuccess.Visible = true;
}

Answer 3

您需要在subscribe_Registration中创建一个注册类的对象