Untitled

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Webprog.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    </div>
        <asp:Label ID="Label1" runat="server" Text="Ime"></asp:Label>
        <p>
            <asp:TextBox ID="TextBox1" runat="server" OnTextChanged="TextBox1_TextChanged" style="margin-left: 0px"></asp:TextBox>
        </p>
        <asp:Label ID="Label2" runat="server" Text="Prezime"></asp:Label>
        <p>
            <asp:TextBox ID="TextBox2" runat="server" style="margin-bottom: 2px"></asp:TextBox>
        </p>
        <asp:Button ID="Button1" runat="server" Height="48px" OnClick="Button1_Click" Text="Submit" Width="129px" />
        <p>
            <asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
        </p>
        <asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="RadioButtonList1_SelectedIndexChanged">
            <asp:ListItem>Bora Stankovic</asp:ListItem>
            <asp:ListItem>Franc Kafka</asp:ListItem>
            <asp:ListItem>Milos Crnjanski</asp:ListItem>
        </asp:RadioButtonList>
        <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
            <asp:ListItem>Dela</asp:ListItem>
            <asp:ListItem>Necista krv</asp:ListItem>
            <asp:ListItem>Uvela ruza</asp:ListItem>
            <asp:ListItem>Bozji ljudi</asp:ListItem>
        </asp:DropDownList>
        <asp:DropDownList ID="DropDownList2" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList2_SelectedIndexChanged">
            <asp:ListItem>Dela</asp:ListItem>
            <asp:ListItem>Odustani!</asp:ListItem>
            <asp:ListItem>Prometej</asp:ListItem>
            <asp:ListItem>Mala basna</asp:ListItem>
        </asp:DropDownList>
        <asp:DropDownList ID="DropDownList3" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList3_SelectedIndexChanged">
            <asp:ListItem>Dela</asp:ListItem>
            <asp:ListItem>Seobe</asp:ListItem>
            <asp:ListItem>Dnevnik o Carnojevicu</asp:ListItem>
            <asp:ListItem>Roman o Londonu</asp:ListItem>
        </asp:DropDownList>
        <p>
            <asp:Label ID="Label4" runat="server" Text="Label"></asp:Label>
        </p>
    </form>
</body>
</html>
//////////////
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Webprog
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DropDownList1.Visible = false;
            DropDownList2.Visible = false;
            DropDownList3.Visible = false;
        }

        protected void TextBox1_TextChanged(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            Label3.Text = "Zdravo, " + TextBox1.Text + " " + TextBox2.Text;
        }

        protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string x = RadioButtonList1.SelectedItem.Value;
            if (x == "Bora Stankovic") DropDownList1.Visible = true;
            if (x == "Franc Kafka") DropDownList2.Visible = true;
            if (x == "Milos Crnjanski") DropDownList3.Visible = true;
        }

        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            Label4.Text = "Moja omiljena lektira je delo " + DropDownList1.SelectedValue + "  koje je napisao " + RadioButtonList1.SelectedItem.Value;
        }

        protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
        {
            Label4.Text = "Moja omiljena lektira je delo " + DropDownList2.SelectedValue + "  koje je napisao " + RadioButtonList1.SelectedItem.Value;
        }

        protected void DropDownList3_SelectedIndexChanged(object sender, EventArgs e)
        {
            Label4.Text = "Moja omiljena lektira je delo " + DropDownList3.SelectedValue + "  koje je napisao " + RadioButtonList1.SelectedItem.Value;
        }
    }
}