如何使用c#清除windows应用程序中的datetimepicker值？

Question

我想点击清除按钮时清除我的datetimepicker对象值.

我只是这样试过:

 datetimepicker1.Format = DateTimePickerFormat.Short;
 datetimepicker1.CustomFormat = " "; 

是的,它清除了datetimepicker控件下的值.但问题是在清除了值之后,我想在选择特定日期后选择日期,该日期不会显示在datetimepicker对象中.有什么问题？

Answer 1

这应该符合你的目的.逻辑是将日期重置为最小值,然后使用ValueChanged事件使用您已尝试过的内容将其隐藏.

private void DateTimePicker1_ValueChanged(object sender, EventArgs e)
{
    if (dateTimePicker1.Value == DateTimePicker.MinimumDateTime)
    {
        dateTimePicker1.Value = DateTime.Now; // This is required in order to show current month/year when user reopens the date popup.
        dateTimePicker1.Format = DateTimePickerFormat.Custom;
        dateTimePicker1.CustomFormat = " ";
    }
    else
    {
        dateTimePicker1.Format = DateTimePickerFormat.Short;
    }
}

private void Clear_Click(object sender, EventArgs e)
{
    dateTimePicker1.Value = DateTimePicker.MinimumDateTime;
}