Reflection Ignore Unsupported Properties

Questions & Answers
1

I am using reflection in an editor script. The script looks up all of the components on a GameObject and returns their properties with GetProperties();

Some properties are obsolete and return an error when used in conjunction with GetValue such as:

minVolume is not supported anymore. Use min-, maxDistance and rolloffMode instead.
System.Reflection.MonoProperty:GetValue(Object, Object[])

How can we check for these obsolete properties or simply avoid having to see these error messages?

try{ 
  propertyValue = propertyInfo.GetValue(myComponent,null); 
} catch {
  // is not catching the error
}

Edit: The problematic properties I’ve found were “rolloffFactor”,“minVolume”, and “maxVolume” which are all from AudioSource. My current workaround is to check for these property names and skip them.

3

You need to use:

if(!propertyInfo.IsDefined(typeof(ObsoleteAttribute), true))
    propertyValue = propertyInfo.GetValue(myComponent,null);
2

I accidently just posted some code first, but the idea is to look for an Obsolete attribute on your property.

Here’s some more info:

And a code snippet:

object[] attr = propertyInfo.GetCustomAttributes (typeof(ObsoleteAttribute), true);

if(attr.Length > 0)
   continue;