I answered a thread about this today and could not find anywhere it has been posted before. 

It is well documented how to save the contents of a multi-select combo box to a Single Line of Text field, but not so how to successfully get it back into the DefaultSelectedItems of the control.

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Hi Folks, 

 

Scenario: If you are not a C# / JavaScript developer and want to implement Multi Select check box in PowerApps Portal. Then this article will help you. 

 

In Dataverse: 

 

1. Choose your Table > Add fields > Add Column > "Two-Option field sets". Leave the default value as it is ( Yes/ No) 

2. In the Tables choose forms > Pick your form > Add a section ( preferably with column 3 or Column 4) 

3. Add all your "Two-option field sets" in to your section.  

 

Entity Form / Web Form Steps: 

 

1. Go to portal management > Entity Forms 

2. Click on the form you want to build multiselect ( For Ex: Contact) 

3. Related > Entity Form Meta data > New Entity Form meta data 

4. Under General > Type > Select "Attribute" 

5. Under the Attribute logical name > Choose your "Two-option field set" you have added . Example in the screen shot below 

6. Under Style control > Choose "Multiple choice" and under Group name " Type your Section name" . Example in the screen shot

 

Repeat it for all your "Two-options" set . And the output you will get it like below. 

 

 

Hope this is useful 

Note: Originally published @

 https://ragavanrajan.medium.com/how-to-implement-multiselect-aka-multi-check-box-selection-in-power...