How to Build Bulk Checkbox Selection (Select All) in Power Apps Gallery

Checkboxes are commonly used in groups, but Power Apps doesn’t provide a native way to group classic checkboxes. This can be challenging when you need to manipulate multiple checkboxes simultaneously.

I encountered this limitation while working on a project requiring a highly customized UI, so I’d like to share my solution for managing multiple checkboxes efficiently in Power Apps.

About Checkboxes

Let’s start with some checkbox basics. A checkbox is a control element that has two states: “checked” (true) and “unchecked” (false).

*Note: For single-choice selections, radio buttons are the more appropriate option.

Implementation

Now, let’s implement the bulk operation (“Select All”) for multiple checkboxes inside a Gallery.

Step 1: Create a Collection

First, create a collection that will serve as the data source for our checkboxes. You can do this in the OnVisible property of the screen.

ClearCollect(ColCheckboxes,
    {Name: "Option A", Value: false},
    {Name: "Option B", Value: false},
    {Name: "Option C", Value: false},
    {Name: "Option D", Value: false},
    {Name: "Option E", Value: false}
)

Step 2: Setup the Gallery

Add a Gallery control (Vertical or Horizontal) and connect it to the ColCheckboxes collection we just created.

Step 3: Add Checkbox to Gallery

Add a Checkbox control inside the gallery.

Set the Checkbox properties as follows to bind it to the collection:

• Text: ThisItem.Name
• Default: ThisItem.Value

Step 4: Sync Checkbox State to Collection

Crucially, we need to update the collection whenever a user manually checks or unchecks a box. Use the Patch function in the OnCheck and OnUncheck properties.

// OnCheck & OnUncheck
Patch(ColCheckboxes, ThisItem, {Value: Self.Value})

(Optional) Add a label to visualize the Value property for testing.

Bulk Operations (Select All / Deselect All)

Select All

To check all boxes at once, use the UpdateIf function to update the entire collection.

// OnSelect of "Select All" button
UpdateIf(ColCheckboxes, true, {Value: true})

Deselect All

Similarly, use UpdateIf to set all values to false.

// OnSelect of "Deselect All" button
UpdateIf(ColCheckboxes, true, {Value: false})

Counting & Validation

Count Selected Items

To count how many items are checked, use CountIf.

CountIf(ColCheckboxes, Value = true)

Check if “All Selected”

You can easily verify if all checkboxes are checked by comparing the count to the total rows.

CountIf(ColCheckboxes, Value = true) = CountRows(ColCheckboxes)

Dynamic Options (Adding Items)

Since we rely on a collection, adding new options dynamically is straightforward.

Collect(ColCheckboxes, {Name: "New Option", Value: false})

You can even allow users to add their own options via a text input:

Collect(ColCheckboxes, {Name: TextInput1.Text, Value: false})

Summary

While modern Table controls offer basic multi-select, using a Gallery + Collection approach gives you ultimate flexibility.

• Full control over design and layout.
• Ability to add dynamic logic (Sum, Validation).
• Easy bulk updates using UpdateIf.

This pattern is essential for building advanced Power Apps interfaces.