I want to create my own Boolean operation on an element to pass in as a FilterRule. The ElementPasses member description states:
Derived classes override this method to implement the test that determines whether the given element passes this rule or not.
I have tried to create my own derived class but I can't figure out how to implement it. I would think an interface would be available but I can't find anything. Annoyingly, I remember seeing an example of this but I can't seem to find anything.
This fails with: Static class 'ParameterDefinitionExists' cannot derive from type 'FilterRule'. Static classes must derive from object.
static public class ParameterDefinitionExists : FilterRule
{
public static bool ElementPasses(Element element)
{
return true;
}
}
And this fails with:'FilterRule' does not contain a constructor that takes 0 arguments
static public class ParameterDefinitionExists : FilterRule
{
new public bool ElementPasses(Element element)
{
return true;
}
}
What constructor arguments does it take?
There may be another way to go about it but I can't anything for FilterRules. I'm trying to define and refine a trigger in an updater but maybe I should query the element after it is passed in to the command. I imagine catching it with a filter rule is more efficient.
