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Nao_
Advocate II
Advocate II

Set a Dropdown DataCardValue to Empty

Hi everyone !

 

In a integrated Sharepoint app, I have a form with two dropdowns, one related to the other.
When a change is done on the first dropdown, the second has to be set to no selection.
The reset() function is not a option, because it will set the value to the default value of the form, or i need it to be empty.

 

Does anyone has an idea?


Thanks in advance !

11 REPLIES 11
Nogueira1306
Super User
Super User

A dropdowdown does not has a "blanck" option but the combobox does.

I was going to tell you to use the reset function but in your case it will not work.

zWhat you can try, is adding a "blank" value in the options and use that value as default. After that, use the "reset" property

 

If you need additional help please tag me in your reply and please like my reply.
If my reply provided you with a solution, pleased mark it as a solution ✔️!

Best regards,

Gonçalo Nogueira

Check my LinkedIn!

My website!

My blog!

Nao_
Advocate II
Advocate II

Hi @Nogueira1306 ,
thank you for your answer !
I can't set the default value to "blank", because default value come from the Sharepoint list.
All i need is to reset this value to "nothing selected" when my first dropdown/combobox has change.

Is it even possible?
Thank you !

raf_and46
Helper III
Helper III

 

When a change is done on the first dropdown, the second has to be set to no selection.

 

Maybe not ideal, but perhaps set the second dropdown to be invisible?

 

Okay..

 

https://powerusers.microsoft.com/t5/Building-Power-Apps/How-to-set-dropdown-value-based-on-another-d...

 

Check if that work for you

 

If you need additional help please tag me in your reply and please like my reply.
If my reply provided you with a solution, pleased mark it as a solution ✔️!

Best regards,

Gonçalo Nogueira

Check my LinkedIn!

My website!

My blog!

Manan-Malhotra
Super User
Super User

In this case reset can be used and it won't reset it to the default values
To do so 

1. Select the dropdown

2. Goto its advance setting
3. type AllowEmptySelection in search box of advance
4.  set value as true

5. Set default value =Blank()

 

now use the reset on the other drop down onchange property
This wont reset the value to deafaut instead it will make it blank

@Nao_ 

Nao_
Advocate II
Advocate II

Hi @raf_and46 , I don't want the dropdown to be invisible, but to be set to null ( nothing selected) to force the user to select a new value.

@Nogueira1306  : Thanks for the link, i will look at it.

Hi @Manan-Malhotra, i can't set the default value to null (explained in second comment of the topic)

@Nao_  Sorry If I miss understood your point however in the below image in the marked area you have request to make the 2nd value as blank

If I understood it incorrectly could you re-explain the issue you are facing and what results are you expecting

MananMalhotra_0-1664809752559.png

 

Hi @Manan-Malhotra 
Thanks for you answer

I can't set the default value to "blank", because default value come from the Sharepoint list.

What I need is the second value to be "not selected".
For example :
Dropdown 1 is for categories.
Dropdown 2 is for subcategories.

If the item selected has already a category and a subcategory, and if the user changes the category, i need the subcategory to be unselected.

Nolan2
New Member

I am experiencing the same dilemma. Any solution please?

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