DatePicker controls
The FontWeight property specifies the stroke weight of the text in the control.
To set the stroke weight of all text in a control:
Display the Font page in the control’s Properties view and select the Bold check box, or select the control and click the B button on the StyleBar.
The FontWeight property takes an integer value. A value of 400 indicates a normal weight, and 700 indicates a bold weight. The following example sets the text labels of the tab pages of a tab control to bold:
dp_1.FontWeight = 700