How to add an item to a drop down list in asp.net

Drop down is used to display data in the form of list but at a time only one item will display. It just behaves as the input control for User and in form. There are many ways to add the items in drop down; Direct defined in HTML file, add items from C# file and add items from datasource.

@Directly Add items from HTML file

Adding item from item list. Adding the items through item list

Add Directly :      <asp:DropDownList ID="DropDownList1" runat="server">

        <asp:ListItem Text="First" Selected=True  Value=1>First</asp:ListItem>

        <asp:ListItem Text="Second"   Value=1>Second</asp:ListItem>

        </asp:DropDownList>

@Adding Items in Dropdown from c#

HTML Code:

C# Code added :  <asp:DropDownList ID="DropDownList2" runat="server"></asp:DropDownList>

C# Code:

protected void Page_Load(object sender, EventArgs e)

        {

            BindValue();

        }

        public void BindValue()

        {

            //DropDownList2.Items.Add(new ListItem("Zero"));  Binding only text

            DropDownList2.Items.Clear();

            DropDownList2.Items.Add(new ListItem("first", "1"));

            DropDownList2.Items.Add(new ListItem("Second", "2"));

        }

@OutPut

Bind data into dropdown from datasource

http://getmscodes.blogspot.in/2013/11/bind-object-to-dropdownlist.html