Indicates whether or not a value has been set; this parameter is always false if ShowCheckBox is false. It is used to obtain the state of the checkbox that is displayed if ShowCheckBox is true; if the checkbox is checked, the date is valid. If it is unchecked, the date is regarded as "unset".
[Visual Basic] Public Property ValueSet As Boolean [C#] public bool ValueSet {get; set;} [C++] public: __property bool get_ValueSet(); public: __property void set_ValueSet(bool); [JScript] public function get ValueSet() : Boolean; public function set ValueSet(Boolean);
DateTimePicker Class | DateTimePicker Members | System.WinForms Namespace