How to get all properties of event viewer file(.evtx)?

Question

Hi All

 

I am writing a Text file which is containing all properties of .Evtx file.

 

While retiring the properties of event viewer file (.evtx) sometimes some properties values are coming as a null. for example below properties:

LevelDisplayName

TaskDisplayName

EventID

 

I am getting null values for them sometimes.

 

So I want to ask is there any other properties which have same values so that I can read values.

 

Thanks

 

What I have tried:

 

I tried to search all properties while debugging but not able to find.