<table runat="server">
    <tr>
        <td>Month/Year:</td>
        <td>
            <telerik:RadMonthYearPicker ID="MonthYear" runat="server" Width="150px">
            </telerik:RadMonthYearPicker>
        </td>
        <td>
            <asp:Button ID="btnGenerate" runat="server" Text="Get Report" OnClick="btnGenerate_Click" />
        </td>
    </tr>
</table>

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            MonthYear.SelectedDate = DateTime.Today;
            MonthYear.MaxDate = DateTime.Today.AddDays(1);
        }
    }