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i am using CalendarExtender in that i want to disable only sunday,monday dates only for throught year. when i select monday or sunday date it will not selectable and i want to apply red colour those days.

how i want to write the code

please give me solution as early as possible


D.V.Mallikarjuna Guptha

Look here for details of how you can do it here:
ASP.NET AJAX Calendar Extender Tips and Tricks[^]

For Red color part, apply CSS.
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<script type="text/javascript">
    function checkDate(sender,args)
 if (sender._selectedDate < new Date())
                alert("You cannot select a day earlier than today!");
                sender._selectedDate = new Date();
                // set the date back to the current date

and on extender textbox you have to call checkdate function
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
         <cc1:CalendarExtender ID="CalendarExtender1"
         runat="server" OnClientDateSelectionChanged="checkDate" TargetControlID="TextBox1" /

this can give you better idea how to customize you control according to any requirment.
if you have any other question regarding to development .please feel free to contact or mail me at
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