WinForm中DateTimePicker时间选择与设置为空值显示
时间选择
DateTimePicker.ShowUpDown = true; DateTimePicker.CustomFormat = "hh:mm"; DateTimePicker.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
设置为空
dtp.Format = DateTimePickerFormat.Custom;
dtp.CustomFormat = " ";
dtp.Value = DateTime.FromOADate(0);
dtp.Text = string.Empty;
补充:asp.net教程,基础入门