Dynamically bind Integer (Numbers) to DropDownList in ASP.Net

Here I have created sample that binds DropDwonList using For Loop

HTML

<div>
    <asp:DropDownList ID="ddlNumbers" runat="server">
    </asp:DropDownList>
</div>

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        BindNumbers();
    }
}

private void BindNumbers()
{
    for (int i = 1; i <= 4; i++)
    {
        this.ddlNumbers.Items.Add(i.ToString());
    }
}