i want to match the radiobutton options with C# sql

Question

i want to match the radiobutton options with correct ans in data base but what i did is

its just giving right for wrong, and viceversa

private void answer()

{

string Answer;

int score = 0;

SqlConnection con = new SqlConnection();

string cmd2= "SELECT Answer FROM Questions

con.ConnectionString = constring;

SqlCommand cmdn = new SqlCommand(cmd2, con);

//SqlDataAdapter sda = new SqlDataAdapter(cmd2, conn);

try

{

con.Open();

SqlDataAdapter sda = new SqlDataAdapter(cmd2, con);

DataTable dtb = new DataTable();

SqlDataReader Reader = cmdn.ExecuteReader();

if (radioButton1.Checked == true)

{

Answer = radioButton1.Text;

radioButton1.Checked = false;

}

else if (radioButton2.Checked == true)

{

Answer = radioButton2.Text;

radioButton2.Checked = false;

}

else if (radioButton3.Checked == true)

{

Answer = radioButton3.Text;

radioButton3.Checked = false;

}

else if (radioButton4.Checked == true)

{

Answer = radioButton4.Text;

radioButton4.Checked = false;

}

else { Answer = ""; }

if (Answer == label3.Text)

{

MessageBox.Show("your answer is correct");

}

else

{

MessageBox.Show("your answer in incorrect");