- Collection is a group of items or we can say a group of information
- It can store a group of numbers. For example: [1,2,3]
- It can store a group of strings. For example: ["a","b","c"]
- It's a group of similar data
- It can even save array of objects
- [{Id: 1, Value: "India"},{Id: 2, Value: "US"},{Id: 3, Value: "UK"}]
- (In Power Apps language, array of objects is called as Table of Records)
- Collections get saved locally inside the Power Apps application
- Collections are used when you want to store some information temporarily
- If you refresh the app, the collection will be erased and you need to initiate it again
Methods to initialize a collection in Power Apps
- We can use Collect or ClearCollect function to initialize the collection
Actions:
- Showing collection in a gallery
- Adding a new item to a collection
- Removing item from a collection
- Clearing a collection
How to access collection and it's elements
- First function - to read first element/record of the collection
- Last function - to read last element/record of the collection
- FirstN function - to access first N elements/records of the collection
- LastN function - to access last N elements/records of the collection
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