Example of Disabled Items in ASP.NET Core Dropdown List Control
This example showcases the disabled items of DropDownList. When you click on the DropDownList the popup will open, and you will notice that the disabled items are greyed out and cannot be selected.
DEMO
SOURCE
Vegetable
The DropDownList provides options for individual items to be in either an enabled or disabled state for specific scenarios. Once an item is disabled, it cannot be selected as a value for the component. To configure the disabled item columns, use the fields.disabled property.