Hi Siddharth,
CSS files are not used for setting of control properties.
You can set ImagesPath declaratively or programmatically, for example:
<telerik:RadDateTimePicker
ID="RadDateTimePicker1"
runat="server"
ImagesPath="~/MyCalendarImagesFolder/" />
When using a custom skin, you can go without setting ImagesPath .In this case you will have to set background images for all RadCalendar's buttons in the CSS file using the respective CSS classes.
Let us know if you need more information.
Sincerely yours,
Dimo
the Telerik team
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