How do I make window form for conductind online aptitude test..?

Ive tried. I have stored questions and options into the database. Now I'm trying to display the question into the form. But I ccant do it.....No errors ....but no changes in the form and the text box, label and radio buttons for options are empty.

The code that I've tried ios below....

Please help me with I have to do my project....There are still more....
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace TypeA
{
public partial class q1 : Form
{

public q1()
{
InitializeComponent();
}

private void q1_Load(object sender, EventArgs e)
{
String con1 = @"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Ruth Priya\Documents\q1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";
SqlConnection con2 = new SqlConnection(con1);
int i = 1;
SqlCommand select = new SqlCommand("Select Questions from q1 where Qid = '" + i + "' ", con2);
SqlDataReader dr;
con2.Open();
dr = select.ExecuteReader();
dr.Read();

label1.Text = dr["Questions"].ToString();
dr.Close();
con2.Close();

DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter("select Questions from q1 where Qid='" + i + "'", @"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Ruth Priya\Documents\q1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
da.Fill(ds);
if (ds.Tables[0].Rows.Count >= 0)
{
textBox1.Text = ds.Tables[0].Rows[0]["Qid"].ToString();

}

SqlConnection myConn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Ruth Priya\Documents\q1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True");
myConn.Open();
SqlCommand myCommand = myConn.CreateCommand();

myCommand.CommandText = "select Questions from q1 where Qid = i ";

myCommand.CommandType = CommandType.Text;
SqlDataReader reader = myCommand.ExecuteReader();
DataTable dt2 = new DataTable();
dt2.Load(reader);

if (dt2.Rows.Count != 0)
{
label1.Text = dt2.Rows[0].ToString();



}



}




private void button1_Click(object sender, EventArgs e)
{
this.Hide();
q2 ss = new q2();
ss.Show();

}

private void label1_Click(object sender, EventArgs e)
{

}

private void textBox1_TextChanged(object sender, EventArgs e)
{
string myString = string.Empty;
using (SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Ruth Priya\Documents\q1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"))
{
string query = @"select Questions from q1 where Qid = i ";
using (SqlCommand cmd = new SqlCommand(query, conn))
{
cmd.Parameters.Add("@Qid", SqlDbType.Int).Value = 1; //set your value

using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
myString += string.Format("Qid: {1}",
reader["Qid"].ToString()) + "\r\n";
}

label1.Text = "These are the results from the query:\r