In the DateTimePicker control, when we click the dropdown button , a calendar gets displayed . at the bottom of the calendar , there is a button : Today , which on being cli
I seem to recall wanting to modify this control myself a while ago, and finding out that it is not possible. The solution was to build your own custom control.
If it helps, I did find this Show a custom calendar dropdown with a derived DateTimePicker class, which links to a custom Winforms calendar Culture Aware Month Calendar and DatePicker.