Gets or sets a value indicating whether a spin button control (also known as an up-down control) is used to adjust the date/time value.
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When the DateTimePicker.ShowUpDown property is set to true, a spin button control (also known as an up-down control), rather than a drop-down calendar, is used to adjust time values. The date and time can be adjusted by selecting each element individually and using the up and down buttons to change the value.
To display only time in a System.Windows.Forms.DateTimePicker, set the DateTimePicker.Format property to DateTimePickerFormat.Time, and the DateTimePicker.ShowUpDown property to true.