The DayFormat property specifies the DateTime format to be used for day headers. It accepts the same string as DateTime.ToString(string).
Here are the examples for EN-US locale:
| DayFormat value | Sample header |
|---|---|
| "d" | 6/5/2006 |
| "D" | Monday, June 5, 2006 |
| "m" or "M" | June 5 |
| DayFormat value | Sample header |
|---|---|
| "dddd" | Monday |
| "ddd" | Mo |
| "dd" | 05 |
| "%d" | 5 |
| "M/dd" | 6/05 |
| "M/d" | 6/5 |
| "MM/dd" | 06/05 |
| "d MMMM yyyy" | 5 June 2006 |
| "yyyy-MM-dd" | 2006-06-05 |