อยากทราบวิธีการส่งค่าลง sql โดยใช้ ภาษา asp.net ครับ

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Configuration;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    private string strConn, strSql;
    SqlCommand cmd;
    SqlConnection conn;

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void bt_ok_Click(object sender, EventArgs e)
    {
        strConn = WebConfigurationManager.ConnectionStrings["System sales CCTV online area in Bangkok"].ConnectionString;
        conn = new SqlConnection(strConn);
        conn.Open();
        cmd = new SqlCommand();

        strSql = "INSERT INTO [member]([Mem_usename],[Mem_password],[Mem_question],[Mem_answer],[Mem_fname],[Mem_lname],[Mem_card],[Mem_birthday],[Mem_address],[Mem_District],[Mem_province],[Mem_zipcode],[Mem_tel],[Mem_email]) VALUES(@Mem_usename,@Mem_password,@Mem_question,@Mem_answer,@Mem_fname,@Mem_lname,@Mem_card,@Mem_birthday,@Mem_sex,@Mem_address,@Mem_District,@Mem_province,@Mem_zipcode,@Mem_tel,@Mem_email)";

        cmd.Parameters.Add("@Mem_usename", SqlDbType.VarChar).Value = TextBox3.Text.Trim();
        cmd.Parameters.Add("@Mem_password", SqlDbType.VarChar).Value = TextBox4.Text.Trim();
        cmd.Parameters.Add("@Mem_email", SqlDbType.VarChar).Value = TextBox6.Text.Trim();
        cmd.Parameters.Add("@Mem_question", SqlDbType.VarChar).Value = TextBox7.Text.Trim();
        cmd.Parameters.Add("@Mem_answer", SqlDbType.VarChar).Value = TextBox8.Text.Trim();
        cmd.Parameters.Add("@Mem_fname", SqlDbType.VarChar).Value = TextBox9.Text.Trim();
        cmd.Parameters.Add("@Mem_lname", SqlDbType.VarChar).Value = TextBox10.Text.Trim();
        cmd.Parameters.Add("@Mem_birthday", SqlDbType.VarChar).Value = TextBox11.Text.Trim();
        cmd.Parameters.Add("@Mem_card", SqlDbType.VarChar).Value = TextBox12.Text.Trim();
        cmd.Parameters.Add("@Mem_address", SqlDbType.VarChar).Value = TextBox13.Text.Trim();
        cmd.Parameters.Add("@Mem_District", SqlDbType.VarChar).Value = TextBox14.Text.Trim();
        cmd.Parameters.Add("@Mem_province", SqlDbType.VarChar).Value = TextBox15.Text.Trim();
        cmd.Parameters.Add("@Mem_zipcode", SqlDbType.VarChar).Value = TextBox16.Text.Trim();
        cmd.Parameters.Add("@Mem_tel", SqlDbType.VarChar).Value = TextBox17.Text.Trim();

        cmd.CommandText = strSql;
        cmd.CommandType = CommandType.Text;
        cmd.Connection = conn;

    //    int x = cmd.ExecuteNonQuery();
    //    txtName.Text = "";
    //    txtlastName.Text = "";
    //    TextBox1.Text = "";
   }
    protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
    {

    }
    protected void TextBox3_TextChanged(object sender, EventArgs e)
    {

    }
}