Question Problem with custom format of datetime picker

[John_neuman]

i have a problem with datetimepicker that when i have custom format i couldn't select date by clciking it in dropdown. but when i had a regular short or sth i could select date by clciking it on the datetimepicker dropdown.

in my code the datetime picker is in custom format with fomat as blank for empty display at the beginning

Private Sub Form_UNS_main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Eff_date.Format = DateTimePickerFormat.Custom

Eff_date.CustomFormat = " "

End Sub

and once the user changes the value it goes to short format.

Private Sub Eff_date_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Eff_date.ValueChanged

Eff_date.Format = DateTimePickerFormat.Short

End Sub

so i cannot select the date the firstime by clciking the dropdown. but after the first time i can select the date by clciking the dropdown easily

so how do i address this issue.

Any help