using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void btnStart_Click(object sender, EventArgs e)
    {
        List<string> passwords = new List<string>
        {
            "KIPNUGGET",
            "BIGMAC",
            "MCHANS",
            "MCKROKET",
            "BIGTASTY"
        };
        string inputPassword = txtPassword.Text.ToUpper();
        string username = txtName.Text;

        if (inputPassword.Length > 10)
        {
            lblError.Text = "Wachtwoord is te lang!";
        }
        else
        {
            for (int i = 0; i < passwords.Count; i++)
            {
                if (inputPassword == passwords[i])
                {
                    pnlLogin.Visible = false;
                    pnlConvert.Visible = true;
                    lblGreet.Text = "<h2>Welkom " + username + "!</h2>";
                }
                else
                {
                    lblError.Text = "Wachtwoord is onjuist!";
                }
            }
        }
    }

    protected void ddlValue_SelectedIndexChanged(object sender, EventArgs e)
    {
        uint inputMeters = Convert.ToUInt32(txtMeter.Text);
        string inputValue = ddlValue.SelectedValue;

        lblResult.Text = convertValue(inputMeters, inputValue);
    }
    string convertValue(uint meter, string value)
    {
        const float feet = 3.28084f;
        const float yard = 1.09361f;
        const float mile = 0.00062f;

        float result = 0f;
        switch (value)
        {
            case "feet":
                result = meter * feet;
                break;
            case "yard":
                result = meter * yard;
                break;
            case "mile":
                result = meter * mile;
                break;
        }
        result = Convert.ToSingle(Math.Round(result, 2));

        return Convert.ToString(result);
    }
}