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Customized CSS Styles for AJAX Calendar Control

Jul 30, 2010

Here I will explain how change the appearance of ajax calendar using CSS Styles.


In so many situations I have used calendar control but I didn’t tried to change CSS style of calendar control in one project I got requirement like to match calendar control style to project default colors at that time I changed calendar control style by using following CSS style classes.

First add Ajax tollkit reference to your project and register that ajax referece like this in your aspx page

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>

After that design your aspx like this

<html xmlns="">
<head id="Head1" runat="server">
<style type="text/css">
/*Calendar Control CSS*/
.cal_Theme1 .ajax__calendar_container   {
background-color: #DEF1F4;
border:solid 1px #77D5F7;

.cal_Theme1 .ajax__calendar_header  {
background-color: #ffffff;
margin-bottom: 4px;

.cal_Theme1 .ajax__calendar_title,
.cal_Theme1 .ajax__calendar_next,
.cal_Theme1 .ajax__calendar_prev    {
color: #004080;
padding-top: 3px;

.cal_Theme1 .ajax__calendar_body    {
background-color: #ffffff;
border: solid 1px #77D5F7;

.cal_Theme1 .ajax__calendar_dayname {
margin-bottom: 4px;
margin-top: 2px;
color: #004080;

.cal_Theme1 .ajax__calendar_day {
color: #004080;

.cal_Theme1 .ajax__calendar_hover .ajax__calendar_day,
.cal_Theme1 .ajax__calendar_hover .ajax__calendar_month,
.cal_Theme1 .ajax__calendar_hover .ajax__calendar_year,
.cal_Theme1 .ajax__calendar_active  {
color: #004080;
font-weight: bold;
background-color: #DEF1F4;

.cal_Theme1 .ajax__calendar_today   {

.cal_Theme1 .ajax__calendar_other,
.cal_Theme1 .ajax__calendar_hover .ajax__calendar_today,
.cal_Theme1 .ajax__calendar_hover .ajax__calendar_title {
color: #bbbbbb;
<form id="form1" runat="server">
<asp:ScriptManager ID="script" runat="server">
<asp:TextBox SkinID="txtboxCustomizedMSkin" ID="tbEndDate" runat="server" CausesValidation="true" ReadOnly="true" />
<ajaxToolkit:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="tbEndDate" CssClass= " cal_Theme1" />

Download sample code attached


Related AJAX calendar control posts

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Anonymous said...

Since last 3 months , i show the best example in this site .... Thanks suresh ....


Suresh Dasari said...

Thanks Darshan Keep visiting....

Anonymous said...

hi suresh..thanks for the best articles..
i want to start writing blog.. can u plz tell me how to add demos like in these articles to my blog..

Anonymous said...

your website is very helpful. Please give more assignments to work on.

Anonymous said...

hi suresh ... i have some problem on this issue .....

instead of TODAY, its showing in arabic ... can u please tell me wats the solution?

Shah Rizar said...


KALPESH said...

hi suresh i want fill Background Color On Today Date

Anonymous said...

thanks a lot buddy

Anonymous said...

@kalpesh: write a style like .cal_Theme1 .ajax__calendar_today { background-color: red; }

Best Reagrds

Sree said...

In he same way you change the language by adding style.

should be like....
cal_Theme1 .ajax__calendar_today { language : English;}

or you can write for parent too

Best Regard


Anonymous said...

Thank you, really great help. :)

Anonymous said...

it's excellent aportation!, I just say what if you put css code in a .css file doesn't work (at least me)
then you have to put into aspx page raw

ahmed ezzat said...

you are amazing and proffesional

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