Select this option to enable a drop-down date selector. When this option is enabled, the Edit Format Property becomes required and accepts a standard DateTime Formatter. When specifying the Edit Format property, the value must match the Input Mask.
Example: Input mask = 00/00/0000
Edit Format = mm/dd/yyyy
DateTime Standard Format Specifier:
• d - Short date pattern
• D - Long date pattern
• t - Short time pattern
• T - Long time pattern
• f - Full date/time pattern (short time)
• F - Full date/time pattern (long time)
• g - General date/time pattern (short time)
• G - General date/time pattern (long time)
• M - month day pattern
• y - Year month pattern
Please see http://msdn2.microsoft.com/en-us/library/8kb3ddd4(VS.71).aspx for more information regarding DateTime format specifiers.