Set DropDownList Selected Value (Text) on Page Load in ASP.Net using C# and VB.Net

i have the following fields: type(dropdownlist)---->ExhibitionMonth(dropdownlist)----> All monthsYear(dropdownlist)-----> Years till 2049

when i click on view link button,it display all the events of the selected month and year.

I want the same result but on pageload.i am selecting exhibition then i am selecting month and then i am selecting year and clicking on view link button and i am getting the required result.

what i want is Exhibition, current month and current year should be selected by default on Page load.how to achieve that?

<div id="divCrmInformation1" style="border-bottom: 1px dotted; border-color: #0a7898;
    height: 560px; margin-top: 15px; margin-right: 20px; margin-bottom: 5px;">
    <div class="homeDivHdr">
        Upcoming Exhibitions</div>
    <table>
        <tr>
            <td align="right" valign="top">
                Type :<br />
            </td>
            <td align="left">
                &nbsp;
            </td>
            <td align="left" valign="top">
                <asp:DropDownList ID="lstType" runat="server" Width="210px" Height="26px">
                    <asp:ListItem Value='--Select--' Selected="True">--Select--</asp:ListItem>
                    <asp:ListItem Value="Exhibition">Exhibition</asp:ListItem>
                </asp:DropDownList>
            </td>
            <td align="right" valign="top">
                Month :
            </td>
            <td align="left">
                &nbsp;
            </td>
            <td align="left" valign="top">
                <asp:DropDownList ID="lstMonth" runat="server" Width="210px" Height="26px">
                    <asp:ListItem Value='--Select--' Selected="True">--Select Month--</asp:ListItem>
                    <asp:ListItem>January</asp:ListItem>
                    <asp:ListItem>Febuary</asp:ListItem>
                    <asp:ListItem>March</asp:ListItem>
                    <asp:ListItem>April</asp:ListItem>
                    <asp:ListItem>May</asp:ListItem>
                    <asp:ListItem>June</asp:ListItem>
                    <asp:ListItem>July</asp:ListItem>
                    <asp:ListItem>August</asp:ListItem>
                    <asp:ListItem>September</asp:ListItem>
                    <asp:ListItem>October</asp:ListItem>
                    <asp:ListItem>November</asp:ListItem>
                    <asp:ListItem>December</asp:ListItem>
                </asp:DropDownList>
            </td>
            <td align="right" valign="top">
                Year :
            </td>
            <td align="left">
                &nbsp;
            </td>
            <td align="left" valign="top">
                <asp:DropDownList ID="lstYear" runat="server" Width="210px" Height="26px">
                    <asp:ListItem Value='--Select--' Selected="True">--Select Year--</asp:ListItem>
                </asp:DropDownList>
            </td>
            <td>
                <asp:Button ID="buttView" CssClass="buttSearch buttMagine" ForeColor="White" runat="server"
                    Text="View Link" OnClick="buttContact_Click" BorderStyle="None" Height="25px"
                    Width="90px" />
            </td>
        </tr>
    </table>    
</div>

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        int month = DateTime.Now.Month;
        int year = DateTime.Now.Year;
        lstMonth.SelectedIndex = month;
        lstYear.SelectedIndex = year;
        setYears();
    }
}

protected void setYears()
{
    for (int i = 1990; i < 2050; i++)
        lstYear.Items.Add(i.ToString());
}