The TimeSpanUpDown controls DefaultValue defaults to NULL.
This is a bit daft as it is supposed to replace the value when the value itself is NULL.
Maybe set it to the 0:00:00 or MinimumValue if this is greater
This is a bit daft as it is supposed to replace the value when the value itself is NULL.
Maybe set it to the 0:00:00 or MinimumValue if this is greater