asp.net - How to add a Literal to a day cell in Calendar

How to add Literal control in Calendar Day Cell
AddLiteralInCalendarDayCell.aspx

<%@ Page Language="C#" AutoEventWireup="true" %>

<!DOCTYPE html>

<script runat="server">
    protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
    {
        if (e.Day.IsToday)
        {
            Literal Literal1 = new Literal();
            Literal1.Text ="<br /><font size=-1 color=Snow>ToDay</font>";

            e.Cell.Font.Italic = true;
            e.Cell.Font.Size = FontUnit.XLarge;
            e.Cell.BackColor = System.Drawing.Color.DodgerBlue;
            e.Cell.BorderColor = System.Drawing.Color.SkyBlue;
            e.Cell.ForeColor = System.Drawing.Color.Wheat;
            e.Cell.Font.Name = "Courier New";

            e.Cell.Controls.AddAt(1,Literal1);
        }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>How to add Literal control in Calendar Day Cell</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h2 style="color:SlateBlue; font-style:italic;">
            How to add Literal control in Calendar Day Cell
        </h2>
        <hr width="475" align="left" color="SlateGray" />
        <asp:Calendar
            ID="Calendar1" 
            runat="server"
            NextPrevFormat="FullMonth"
            ForeColor="WhiteSmoke"
            SelectionMode="Day"
            DayNameFormat="Full"
            Font-Names="Book Antiqua"
            Font-Size="Medium"
            OnDayRender="Calendar1_DayRender"
            >
            <DayHeaderStyle
                 BackColor="OliveDrab"
                 />
            <DayStyle
                 BackColor="DarkBlue"
                 BorderColor="CornflowerBlue"
                 BorderWidth="1"
                 Font-Bold="true"
                 Font-Italic="true"
                 Font-Size="Large"
                 />
            <NextPrevStyle
                 Font-Italic="true"
                 Font-Names="Arial CE"
                 />
            <SelectedDayStyle
                 BackColor="Crimson"
                 BorderColor="Pink"
                 />
            <TitleStyle
                 BackColor="MidnightBlue"
                 Height="36"
                 Font-Size="Large"
                 Font-Names="Courier New Baltic"
                 />
        </asp:Calendar>
    </div>
    </form>
</body>
</html>
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