how to save checked item into database.

Question

hello,
can any one tell me how to insert checked item to a database..i have following code.

protected void ImageButton1_Click(object sender, ImageClickEventArgs e)

SqlConnection con = new SqlConnection(strConnection);

        con.Open();

        cmd = new SqlCommand("Insert Into UserCreation(FullName,UserName,Email,PhoneNo,RegionID,StateId,CityID,Password,SecurityQue,SecurityAns,MenuMasterID) VALUES(@FullName,@UserName,@Email,@PhoneNo,@RegionID,@StateId,@CityID,@Password,@SecurityQue,@SecurityAns,@MenuMasterID)", con);

        cmd.CommandType = CommandType.Text;

        cmd.Parameters.AddWithValue("@FullName", txtFullname.Text);

        cmd.Parameters.AddWithValue("@UserName", txtUserName.Text);

        cmd.Parameters.AddWithValue("@Email", txtEmail.Text);

        cmd.Parameters.AddWithValue("@PhoneNo", txtPhoneno.Text);

        cmd.Parameters.AddWithValue("@RegionID", DdlRegion.SelectedValue);

        cmd.Parameters.AddWithValue("@StateId", DdlState.SelectedValue);

        cmd.Parameters.AddWithValue("@CityID", DdlCity.SelectedValue);

        cmd.Parameters.AddWithValue("@Password", txtPassword.Text);

        cmd.Parameters.AddWithValue("@SecurityQue", txtSecurityquestion.Text);

        cmd.Parameters.AddWithValue("@SecurityAns", txtSecurityanswer.Text);

        cmd.Parameters.AddWithValue("@MenuMasterID",chkmenuRights.SelectedItem);

        cmd.ExecuteNonQuery();

        con.Close();

        

        ClientScript.RegisterStartupScript(this.GetType(), "Hello", "alert('Successfully created a user');", true);

        txtFullname.Text = "";

        txtUserName.Text = "";

        txtEmail.Text = "";

        txtPhoneno.Text = "";

        txtPassword.Text = "";

        txtConfirmpassword.Text = "";

        txtSecurityquestion.Text = "";

        txtSecurityanswer.Text = "";

        DdlRegion.SelectedIndex = 0;

        DdlState.SelectedIndex = 0;

        DdlCity.SelectedIndex = 0;

    }

pls help me.
thanx.