Make an icon not clickable / not visible if date is not inputted

[FelipeCaru]

Hello everyone,

I have a question regarding the 'visible' of an icon/button and/or making it clickable.

In an edit form I have, the user can input a 'start date' and 'end date', which both come blank from the start, and also ticket a box marking it as 'completed'. What I want to do is to make that checkbox visible or, better if it is possible, to be seen but not able to be ticketed/used if the 'end date' has not been inputted by the user.

How can I go doing something like this? Any help would be appreciated

[LRVinNC · Accepted solution]

To make the field invisible:  On your checkbox, set Visible to !IsBlank(<name of control with the end date in it>), for example, !IsBlank(Label4).  If Label4 has a value in it the checkbox will be displayed.  If Label4 does not, the checkbox will be hidden.  

To make the field visible but disabled:  On your checkbox set DisplayMode to (using Label4 again as the field):

If(IsBlank(Label4),DisplayMode.Disabled,DisplayMode.Edit)

[FelipeCaru]

This was exactly what I needed, thank you @LRVinNC 

[Mr-Dang-MSFT]

Thanks @LRVinNC for not only providing one, but two ways of achieving the experiences. @FelipeCaru, can you let us know what you decide to go with and what other question you have related to this scenario?

[FelipeCaru]

@Mr-Dang-MSFT 

I used the method of disabling the checkbox, since that way the user knows it is there and will know it is missing the end date (it was, actually, a requirement from them)

If(IsBlank(DateValue4)=true, DisplayMode.Disabled, DisplayMode.Edit)