Syncfusion GridComponent Rendering Multiple Times Despite No Data Changes When Using Template

[Goutham]

Hi Syncfusion Team,
 Syncfusion GridComponent Rendering Multiple Times Despite No Data Changes When Using Template

  I'm facing an issue with the GridComponent in my React application. The component seems to be rendering multiple times even when there is no change in the underlying data, specifically when I'm using a template for one of the columns.

Problem Details:

• I'm using the GridComponent with a custom template for the columns and as child for other components.
• Even though the data remains static and just for  there is change in state updates for other values in parent component, I’m observing that the component is re-rendering multiple times.
• This is causing unnecessary rendering overhead and impacting performance, especially with larger datasets.

Questions:

1. Is there a recommended approach to prevent excessive rendering when using templates in Syncfusion’s GridComponent?
2. Are there specific optimizations or configurations I should consider to handle this case?
   

Thank you

[Aishwarya Rameshbabu]

Hi Goutham,

Greetings from Syncfusion support.

Based on the provided information, it appears you are facing the problem where the Syncfusion Grid with custom templates is rendering multiple times without any changes in the data bound to the Grid, resulting in performance issues.

Query 1: Is there a recommended approach to prevent excessive rendering when using templates in Syncfusion’s GridComponent?

Yes, you can optimize rendering performance by reducing unnecessary re-renders of templates in the Syncfusion Grid. When the state of a React component changes, the entire component—including child components like the Grid with templates—will re-render. To prevent this, set the statelessTemplates property to directiveTemplates in the Syncfusion Grid. This adjustment improves component performance by preventing redundant template re-renders during Grid state updates. For more details, please refer to the documentation below.

Documentation Link: StatelessTemplates

Query 2: Are there specific optimizations or configurations I should consider handling this case?

Yes, there are several optimizations you can apply to prevent unnecessary re-renders when the parent component's state updates. Since the Syncfusion Grid is rendered within a parent component, and re-renders are triggered by state changes in the parent, the following strategies will help improve performance:

1. Use React.memo: Wrap the Grid component with React.memo to prevent re-renders when the props passed to the Grid do not change. React.memo will only re-render the Grid if the props have changed, reducing unnecessary updates.

2. Memoize Functions and Objects: Use useCallback for functions and useMemo for objects or arrays that are passed as props to the Grid. This ensures that new instances of these props are not created on every render, which would otherwise trigger unnecessary re-renders of the Grid.

Documentation Link: Performance tips for React Grid Component | Syncfusion

By combining React.memo with useCallback and useMemo for proper memoization, you can significantly reduce unnecessary re-renders and improve the Grid component's performance.

Please refer to the sample below, where we use the useMemo hook to prevent unwanted Grid refreshes when changing a state variable in the React component:

Sample: https://stackblitz.com/edit/react-xm7mfe-xlwxgq?file=index.js

Documentation:  https://ej2.syncfusion.com/react/documentation/grid/how-to/how-to-prevent-component-re-rendering-while-updating-the-same-state-in-react

If the problem persists, please provide the following details to help us further investigate:

1. The complete Grid rendering code, including event handlers and template definitions.
2. The data binding type used in the Grid—Remote or Local. If Remote, please include the adaptor details.
3. The current version of the Syncfusion package.
4. A video demonstrating the issue, if possible, along with the replicated issue in the shared sample.

Regards

Aishwarya R