How to get the items count of an enum

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I have declare a enum in my program, like:
public enum enAllow { SchoolID , PW , Kind , SchYears , GradeID , Ver , IP,
Msg};

How can I get the items count of this enum?

 

[Truong Hong Thi]

Use either Enum.GetNames or Enum.GetValues method.
Example:

int count = Enum.GetValues(typeof(enAllow)).Length;

 

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Thanks a lot!