Handling attachments in SharePoint lists is a common requirement in enterprise solutions. Instead of building custom upload and download logic, developers can leverage the PnP SPFx React Controls library, which provides ready-to-use components that simplify development.

Working with ListItemAttachments in SPFx Using PnP React Controls

Introduction

Handling attachments in SharePoint lists is a common requirement in enterprise solutions. Instead of building custom upload and download logic, developers can leverage the PnP SPFx React Controls library, which provides ready-to-use components that simplify development.

One such powerful control is ListItemAttachments, which allows you to display, upload, and manage attachments directly for a SharePoint list item.

In this article, we will explore how to use the ListItemAttachments control in a React Functional Component (React.FC) and understand how each part of the implementation works.

Complete Code Example

Below is a basic implementation of the ListItemAttachments control:

import * as React from ‘react’;

import { ListItemAttachments } from ‘@pnp/spfx-controls-react/lib/ListItemAttachments’;

import { IListItemAttachmentsWpProps } from ‘./IListItemAttachmentsWpProps’;

const listItemAttachmentsWp: React.FC<IListItemAttachmentsWpProps> = ({ context }) => {

  return (

    <ListItemAttachments

      listId=’5e30db14-c47c-4fec-938a-e14b797f3504′

      itemId={1}

      context={context}

      disabled={false}

    />

  );

};

export default listItemAttachmentsWp;

What is ListItemAttachments?

The ListItemAttachments control is a PnP reusable component designed to:

• Display existing attachments from a SharePoint list item
• Allow users to upload new files
• Enable file deletion
• Manage attachments without custom REST code

This greatly reduces development time and ensures consistency with SharePoint behavior.

Breaking Down the Code

1. Functional Component (React.FC)

const listItemAttachmentsWp: React.FC<IListItemAttachmentsWpProps> = ({ context }) => {

“

This defines a functional component using TypeScript. The context is passed as a prop and is required for the control to interact with SharePoint.

2. Using the ListItemAttachments Control

<ListItemAttachments

  listId=’5e30db14-c47c-4fec-938a-e14b797f3504′

  itemId={1}

  context={context}

  disabled={false}

/>

This is the main control responsible for handling attachments.

Key Properties Explained

listId

listId=’5e30db14-c47c-4fec-938a-e14b797f3504′

• The GUID of the SharePoint list
• This identifies where the attachments are stored

itemId

itemId={1}

“

• The ID of the specific list item
• Attachments are always associated with a list item, not the list itself

context

context={context}

• Passed from the SPFx web part
• Required for authentication and SharePoint API interaction

disabled

disabled={false}

• Controls whether users can modify attachments
• false = full access (upload/delete)
• true = read-only mode

How It Works

When the component renders:

1. It connects to the specified SharePoint list via context
2. Retrieves attachments for the given itemId
3. Displays them in a list
4. Allows users to:
   • Upload files
   • Delete files
   • View attachments

All operations are handled internally by the control using SharePoint APIs.

Important Considerations

1. Valid List ID

Ensure the listId is correct. You can retrieve it via:

• SharePoint REST API
• Browser developer tools
• List settings page

2. Existing Item Requirement

The itemId must exist. Attachments cannot be added to items that are not yet created.

3. Permissions

Users must have permission to:

• Edit items (for uploading/deleting)
• Read items (for viewing)

Enhancements and Real-World Usage

This basic implementation can be extended in several ways:

Dynamic Item ID

Instead of hardcoding:

itemId={1}

You can dynamically pass the item ID from:

• URL parameters
• Selected list item
• Form context

Conditional Editing

You can disable editing based on logic:

disabled={!props.userCanEdit}

Integration with Forms

This control works well inside:

• Custom forms
• SPFx extensions
• Dialog-based editors

Best Practices

• Always validate listId and itemId
• Use dynamic values instead of hardcoded ones in production
• Control user permissions carefully
• Combine with other PnP controls for richer experiences

Conclusion

The ListItemAttachments control is a powerful tool for handling SharePoint attachments without writing complex API logic. By using it within a React Functional Component, you get a clean, efficient, and modern implementation aligned with current SPFx development standards.

This approach reduces development time while delivering a seamless user experience.

Official Documentation

For more details and advanced configurations, refer to the official PnP documentation: