The type "XXX" Cannot be implicitly converted to "XXX []" (Cannot implicitly convert type 'xxx' to 'xxx [] ')

Q:

The "XXX" type cannot be implicitly converted to "XXX []"

Or

Cannot implicitly convert type 'xxx' to 'xxx []'

This problem occurs only when release is debugged. Because there is no specific error location information, it has not been solved for six months. I have no intention to find a solution today. I 'd like to share it with you.

 

A:

The main reason is related to referencing WebService. Search for the keyword "xmlarrayitemattribute", change typeof (XXX) to typeof (XXX []), and OK.

 

[Via1]

[Via2]