Centering text inside a Power Apps data table isn't as straightforward as clicking an alignment button in the ribbon. The native Data Table control in Microsoft Power Apps Canvas Apps comes with rigid layout limitations. It lacks direct CSS or property-level text alignment controls for individual columns. If you want centered headers, aligned numbers, or neatly formatted data cells, you have to work around these platform constraints using specific container structures or modern component alternatives.
This guide breaks down exactly how to achieve center-aligned text and headers in your Power Apps data tables. We'll look at the limitations of the traditional data table control, practical workarounds using galleries, and modern canvas design patterns that give you complete control over your column styling.
Understanding the Limitations of Native Power Apps Data Tables
When you drop a traditional Data Table control onto a Power Apps canvas screen, you bind it to a data source like a Microsoft Dataverse table, SharePoint list, or SQL collection. Power Apps automatically generates columns based on your schema.
However, the native data table has strict styling boundaries:
- You cannot directly change individual cell padding, background colors, or text alignment via properties like
Align. - Text alignment defaults to left-aligned for strings and right-aligned for numbers or currency values in most locales.
- Formatting row contents requires modifying the underlying schema or switching to alternative controls.
Because of these restrictions, developers aiming for precise UI polish often hit a brick wall. Microsoft documents control properties thoroughly on the Microsoft Power Apps documentation, but workarounds are necessary for advanced layout formatting.
Method 1: The Modern Gallery Alternative for Custom Alignment
The most reliable way to create a data table with center text in Power Apps is to replace the native Data Table control with a Blank Vertical Gallery. Galleries give you total control over every individual element inside a row, letting you center text, add icons, or apply conditional formatting with ease.
Here is how to build a custom data table using a gallery:
- Insert a Blank Vertical Gallery control onto your screen and set its
Itemsproperty to your data source or collection (for example,ColInventory). - Set the
TemplateSizeof the gallery to your desired row height, such as60. - Inside the gallery template, add a Label control for each column you want to display.
- Select each label and set its
Alignproperty toLayout.Center. - Adjust the
XandWidthproperties of each label so they span evenly across the gallery width, mirroring a traditional table grid.
By using labels inside a gallery, you bypass all native data table restrictions. Every cell's text alignment respects the Layout.Center property instantly.
Method 2: Structuring Header Rows for Centered Text
A table looks incomplete if the data cells are centered but the column headers remain left-aligned. When building a custom gallery table, you also need to construct a matching header row.
Place a container or a simple rectangle above your gallery to act as the header background. Inside that container, add header labels corresponding to your data columns. Set the Align property of these header labels to Layout.Center as well.
To keep your headers aligned with your gallery rows even when users scroll horizontally or vertically, bind the X coordinate of your gallery labels directly to the corresponding header labels. This ensures that resizing or shifting columns keeps your layout intact.
Handling Common Formatting Edge Cases
When centering text in tabular layouts, you'll encounter a few common visual challenges. Knowing how to handle them keeps your app looking professional.
Managing Long Text Strings
Centered text that exceeds the width of a column wraps to multiple lines. In a table grid, multi-line centered text can quickly break the vertical rhythm of your rows.
To fix this:
- Set the
Wrapproperty of your gallery labels tofalseif you prefer truncation with an ellipsis. - If you need multi-line text, increase the row height dynamically or use tooltips (
Tooltipproperty) to show the full string on hover.
Aligning Numeric Data
While text looks balanced when centered, numeric data—such as prices, quantities, or percentages—is generally harder to read when centered. Numbers should ideally align by their decimal points.
If your table contains mixed data types, keep text columns centered or left-aligned, but explicitly set numeric columns to right-aligned using Layout.Right.
Common Mistakes to Avoid
Developers often run into performance or maintenance issues when trying to force styles in Power Apps. Keep these pitfalls in mind:
- Overcomplicating nested containers: Don't wrap every single label in multiple nested layout containers unless you are building responsive multi-breakpoint layouts. Keep your gallery templates flat to avoid rendering lag on mobile devices.
- Hardcoding X coordinates: Avoid hardcoding pixel values for column widths inside large galleries. Calculate widths dynamically based on
Parent.Widthdivided by the number of columns (for example,Parent.Width / 4). - Ignoring screen readers: Custom gallery tables don't automatically expose table semantics to assistive technologies. Ensure your labels have appropriate accessibility roles if your organization requires strict compliance.
To explore broader UI design patterns and canvas app best practices, you can review guidelines provided by organizations like Nielsen Norman Group regarding data density and table readability.
Frequently Asked Questions
Can I center text in the native Power Apps Data Table control?
No. The native Data Table control does not expose properties to alter individual column text alignment. To center text, you must use a gallery control populated with labels.
Does using a gallery instead of a data table hurt app performance?
For standard datasets under a few hundred rows, galleries perform exceptionally well. For large enterprise datasets exceeding thousands of rows, ensure you utilize Delegation properly on your data source queries.
How do I add alternating row colors to a custom gallery table?
You can use an item's index to alternate background colors. Set the template fill property of your gallery to If(Mod(ThisItem.Value, 2) = 0, RGBA(245, 245, 245, 1), RGBA(255, 255, 255, 1)).
Can I make table columns resizable in a gallery?
Native column resizing is built into the standard Data Table control, but custom galleries require custom logic involving mouse dragging and temporary variables to adjust column widths dynamically. For most standard apps, fixed proportional widths are sufficient.
