Drop Down List In ASP.NET Web Forms | Web Forms Tutorial | ASP.NET Tutorial

 using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;


namespace DropDownList

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            //"!IsPostBack" means page load at first time

            if (!IsPostBack)

            {

                ListItem L1 = new ListItem("Ahmedabad", "1");

                ListItem L2 = new ListItem("Mumbai", "2");

                ListItem L3 = new ListItem("Surat", "3");

                ListItem L4 = new ListItem("Rajkot", "4");


                //Adding Above 4 Items to DropDownList at Runtime as shown below :

                DropDownList1.Items.Add(L1);

                DropDownList1.Items.Add(L2);

                DropDownList1.Items.Add(L3);

                DropDownList1.Items.Add(L4);


                DropDownList1.Items[1].Selected = true;

            }

        }

    }

}

Above File is DropDownList\WebForm1.aspx.cs





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


<!DOCTYPE html>


<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

        <div>

            <asp:DropDownList ID="DropDownList1" runat="server" Height="35px" Width="176px">

                <%--<asp:ListItem Value="1" Text="Ahmedabad"></asp:ListItem>

                <asp:ListItem Value="2" Text="Mumbai"></asp:ListItem>

                <asp:ListItem Value="3" Text="Surat"></asp:ListItem>

                <asp:ListItem Value="4" Text="Rajkot"></asp:ListItem>--%>

            </asp:DropDownList>

            <br />

            <br />

            <asp:Button ID="Button1" runat="server" Text="Submit" />

        </div>

    </form>

</body>

</html>

Above File is DropDownList\WebForm1.aspx






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