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I would like to be able to display a DateTimePicker that has a default value of nothing, i.e. no date.
For example, I have a start date dtTaskStart and an end date dtTaskEnd for a task, but the end date is not known, and not populated initially.
I have specified a custom format of yyyy-MM-dd for both controls.
Setting the value to null, or an empty string at runtime causes an error, so how can I accomplish this?
I have considered using a checkbox to control the enabling of this field, but there is still the issue of displaying an initial value..
Edit:
Arguably a duplicate of the question DateTimePicker Null Value (.NET), but the solution I found for my problem is not a solution for that question, so I think it should remain here for others to find..
788
if user wants to clear date, simply again set its CUSTOM FORMAT property to empty string " ", and set its TAG back to 0. Thats it..
You just need to set property valueDefault={null} and the DatePicker will be blank.
The JavaScript DateTime Picker is a lightweight and mobile-friendly control that allows end users to enter or select date and time values from a pop-up calendar and drop-down time list. It provides month, year, and decade views for quick navigation to the desired date.
Just set the property as follows:
When the user press "clear button" or "delete key" do
dtpData.CustomFormat = " " 'An empty SPACE dtpData.Format = DateTimePickerFormat.Custom On DateTimePicker1_ValueChanged event do
dtpData.CustomFormat = "dd/MM/yyyy hh:mm:ss" If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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