C# 禁用时设置无值datetimepicker的方法
如果禁用datetimepicker,是否有方法设置无值C# 禁用时设置无值datetimepicker的方法,c#,C#,如果禁用datetimepicker,是否有方法设置无值 private void radActualSales_CheckedChanged(object sender, EventArgs e) { if (radActualSales.Checked == true) { startTimePicker.Enabled = true; endTimePicker.Enabled = true; }
private void radActualSales_CheckedChanged(object sender, EventArgs e)
{
if (radActualSales.Checked == true)
{
startTimePicker.Enabled = true;
endTimePicker.Enabled = true;
}
else
{
startTimePicker.Enabled = false;
startTimePicker.Value.ToString("00:00:00");
endTimePicker.Enabled = false;
endTimePicker.Value.ToString("00:00:00");
}
}
如果用户选中radActualSales
单选按钮,则允许用户输入时间,但如果不选中,则我希望为其指定默认时间,如12:00am为开始时间,11:59pm为结束时间。如何做到这一点?看看这个解决方案:
我已重写Value属性以接受Null值作为
DateTime.MinValue,同时维护MinValue和
标准控件的最大值。就这些
您可以为DateTimePicker指定一个新值
private void radActualSales_CheckedChanged(object sender, EventArgs e)
{
if (radActualSales.Checked == true)
{
startTimePicker.Enabled = true;
endTimePicker.Enabled = true;
}
else
{
startTimePicker.Enabled = false;
//day, month, year, hour, minute, second
startTimePicker.Value = new DateTime(1, 1, 1, 11, 59, 59);
endTimePicker.Enabled = false;
endTimePicker.Value. = new DateTime(1, 1, 1, 12, 0, 0);
}
}
因此,您不需要空的日期选择器,而是希望分别将时间设置为
12:00am
和11:59pm
,是这样吗?
private void radActualSales_CheckedChanged(object sender, EventArgs e)
{
if (radActualSales.Checked == true)
{
startTimePicker.Enabled = true;
endTimePicker.Enabled = true;
}
else
{
startTimePicker.Enabled = false;
startTimePicker.Value = DateTime.Today.AddHours(0);
endTimePicker.Enabled = false;
endTimePicker.Value = DateTime.Today.AddHours(-0.01);
}
}