Sharepoint on premise 2019 Custom Form and Sites

TeePandos As a SharePoint administrator, I understand your desire to create a custom form and site on your SharePoint 2019 on-premises environment without relying on third-party solutions. The approach you've outlined, using the SharePoint Framework (SPFx) to build custom pages and forms, is certainly a viable option.

The SharePoint Framework is a client-side development framework that allows you to build custom web parts, extensions, and other components that can be integrated into your SharePoint environment. This could be a suitable solution for your requirements, as it would enable you to create a custom form and site that can interact with your existing SharePoint lists and data. One of the key advantages of using SPFx is that it allows you to leverage modern web development technologies and practices, such as TypeScript, React, and other popular frameworks. This can provide you with a great deal of flexibility and control over the user experience and functionality of your custom solutions. However, it's important to note that building custom solutions with SPFx does require a certain level of development expertise. You'll need to be comfortable with web development and have a good understanding of the SharePoint Framework and its associated tooling and APIs. As an alternative, you could also consider using the built-in SharePoint features, such as the SharePoint List form pages, to create your custom form.

While this may not offer the same level of customization as an SPFx-based solution, it could be a simpler and more straightforward approach, especially if you're not as proficient in web development. Ultimately, the decision will depend on your specific requirements, the level of customization you need, and your team's development capabilities. If you decide to go the SPFx route, I'd recommend starting with the official Microsoft documentation and exploring the various resources and samples available in the SharePoint Developer community.