Validator Attirbute

1. Create new class, for example ExampleAttribute.cs

   public class ExampleAttribute
   {
   
   }
   

2. Inherit from ValidatorAttribute class.

   public class ExampleAttribute : ValidatorAttribute
   {
   
   }
   

3. Optionaly add Required/Optional parameters.

   public class ExampleAttribute : ValidatorAttribute
   {
       // Required parameter.
       public readonly string text;
   
       // Constructor with required parameter.
       public ExampleAttribute(string text)
       {
           this.text = text;
       }
   
       // Optional parameter.
       public float SomeValue { get; set; }
   }
   

---

Example

public class ExampleComponent : MonoBehaviour
{
    // Required parameter.
    [Example("Some Text")]
    public float value;

    // Required and optional parameter.
    [Example("Some Text", Value = 10.0f)]
    public float value;
}