How To Create A Custom Data Field Type In SharePoint List

SharePoint lists offer a range of field types, but sometimes you may need to create a custom data field type to meet specific requirements. With SharePoint Foundation, you can customize field types and create fields with custom validation and rendering, enhancing your SharePoint skillset.

In this section, we will provide step-by-step instructions on how to create a custom data field type in a SharePoint list. You will learn how to set up the project in Visual Studio, create the necessary classes, and implement custom validation and rendering. By following these guidelines, you will be able to tailor your SharePoint lists to fit your unique needs.

Creating a custom field type involves various components such as JavaScript files, user controls, and XML files. You will also utilize the JSLink property to register the JavaScript files with SharePoint fields or List View web parts. Additionally, we will explore the remote provisioning pattern to deploy and register the JavaScript files with SharePoint.

It’s important to note that while these steps can be implemented using the SharePoint server-side object model, the SharePoint client-side object model, or with PowerShell, JSLink based customizations are not supported in modern experiences, such as modern lists and libraries in SharePoint Online or on-premises.

Now, let’s dive into the detailed steps for creating a custom field type in SharePoint and expand your SharePoint skillset.

Steps To Create A Custom Field Type

To create a custom field type in SharePoint, follow these steps carefully and utilize the various tools and resources available.

1. Set up the project in Visual Studio by creating an Empty SharePoint Project.

2. Add a new class for the field and another class for the field control.

3. Add a third class for a validation rule.

4. Map folders to TEMPLATE\ControlTemplates and TEMPLATE\XML in Solution Explorer.

5. Create SharePoint User Control and XML files to define the field type and its rendering.

6. Add references and create a validation rule class to implement custom validation.

7. Use JavaScript files and client-side rendering to implement the custom field type.

8. Register the JavaScript files with SharePoint fields or List View web parts using the JSLink property.

9. Use the remote provisioning pattern to deploy the JavaScript files and register them with SharePoint.

10. Set the JSLink property on a List View web part or an SPField to apply the custom rendering.

These steps can be implemented using the SharePoint server-side object model, SharePoint client-side object model, or with PowerShell. It is important to note that JSLink based customizations are not supported in modern experiences, such as modern lists and libraries in SharePoint Online or on-premises.

To enhance your SharePoint skillset and customize field types with custom validation and rendering, follow these steps and create your custom data field type in a SharePoint list.

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