c# - Invalid enum value -

so have type:

public enum types {     aaa= 1,     bbb= 2,     ccc= 4 }  public class requestpayload {     public int prop1 { get; set; }     public string prop2 { get; set; }     public types prop3 { get; set; } } 

and postman testing web api.

public mytype create([frombody] requestpayloadpayload) {     return null } 

here postman settings:

so why in controller object has property prop3 6666 when enum not have value?

i don't know "postman", assume you're surprised int value other 1, 2, or 4 can assigned prop3. reason - that's how enums work in c# since, under hood, field of enum type converted int (or whatever underlying type of enum is), int value can legally stored in it.

from msdn:

enum days : byte {sat=1, sun, mon, tue, wed, thu, fri};   

a variable of type days can assigned value in range of underlying type; values not limited named constants.

this probably avoid expensive run-time checking of values against "defined" values, there may other architectural reasons (the use of "flag" enums 1 comes mind).