MUI DataGrid Slots Row: Custom Row Component Guide

Customize MUI DataGrid slots row custom row component in 2026 with Material-UI's powerful slots API. Transform standard rows into interactive elements with editable cells, expandable sections, and conditional styling.

This step-by-step guide covers implementation for React apps, from basic overrides to advanced features like drag-and-drop and virtualization.

Step 1: Setup MUI DataGrid v7

Install latest packages.

  1. npm i @mui/x-data-grid@latest @mui/material
  2. Import DataGridPro for premium slots.
  3. Define slots in props: slots={{ row: CustomRow }}

Step 2: Create Custom Row Component

Functional component with row props.

  1. const CustomRow = ({ row, rowNode }) => { ... }
  2. Use row.id, row.formattedValues for data.
  3. Apply sx for hover effects, borders.
<Box sx={{ display: 'flex', p: 1, '&:hover': { bgcolor: 'action.hover' } }}>
  {rowNode.children?.map(child => (
    <Chip key={child.id} label={row.formattedValues[child.field]} />
  ))}
</Box>

Step 3: Add Editability & Actions

Integrate form controls.

  1. useState for local edits.
  2. TextField in cells with onChange.
  3. IconButton for delete/duplicate.

Step 4: Advanced Features

Elevate with animations, virtualization.

  1. GridActionsCell for bulk ops.
  2. Draggable with react-dnd.
  3. Expandable rows via slots.rowGroup.
  4. Conditional rendering by row.api.

Step 5: Performance Optimization

Handle 10k+ rows.

  1. Memoize CustomRow with React.memo.
  2. rowHeight='auto' for variable heights.
  3. virtualization: true in GridRows.

Common Pitfalls & Fixes

Troubleshoot fast.

  1. Key prop errors: use row.id.
  2. Re-render loops: stable callbacks.
  3. Focus issues: disableVirtualization temporarily.

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