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## 1.8.5

**`(feat):`** Add forward-compatible enums. Set `experimental-enable-forward-compatible-enums` to `true` in the configuration to generate forward-compatible enums.
With forward-compatible enums you can create and parse an enum value that is not predefined.

* Forward compatible enums are not compatible with the previously generated native enums.
  This is a breaking change for the users of the generated SDK, but only users using switch-case statements are affected.
* Use the `Value` property to get the string value of the enum. - For each value in the enum,
  * a public static property is generated, which is an instance of the enum class,
  * a public static property is generated within the nested `Values` class with the string value of the enum.

Here's a before and after for creating and parsing a resource with a predefined enum value and a custom enum value:
**Before**:
``csharp var resource = client.CreateResource(new Resource { Id = "2", EnumProperty = MyEnum.Value2 } ); // The line below does not compile because the enum does not have a `Value3` value. // resource = client.CreateResource(new Resource { Id = "3", EnumProperty = MyEnum.Value3 } ); resource = client.GetResource("3"); switch(resource.EnumProperty) {
    case MyEnum.Value1:
        Console.WriteLine("Value1");
        break;
    case MyEnum.Value2:
        Console.WriteLine("Value2");
        break;
    default:
        // this will never be reached until the SDK is updated with the new enum value
        Console.WriteLine("Unknown");
        break;
} if(resource.EnumProperty == MyEnum.Value1) {
        Console.WriteLine("Value1");
} else if (resource.EnumProperty == MyEnum.Value2) {
        Console.WriteLine("Value2");
} else {
    // this will never be reached until the SDK is updated with the new enum value
    Console.WriteLine("Unknown");
} ``
No exception is thrown, but the output incorrectly shows `Value1` because .NET falls back to the first value in the enum.
**After**:

````csharp var resource = client.CreateResource(new Resource { Id = "2", EnumProperty = MyEnum.Value2 } ); resource = client.CreateResource(new Resource { Id = "3", EnumProperty = MyEnum.Custom("value3") } ); resource = client.GetResource("3"); switch(resource.EnumProperty.Value) {
    case MyEnum.Values.Value1:
        Console.WriteLine("Value1");
        break;
    case MyEnum.Values.Value2:
        Console.WriteLine("Value2");
        break;
    default:
        Console.WriteLine(resource.EnumProperty.Value);
        break;
} if(resource.EnumProperty == MyEnum.Value1) {
    Console.WriteLine("Value1");
} else if (resource.EnumProperty == MyEnum.Value2) {
    Console.WriteLine("Value2");
} else {
    Console.WriteLine(resource.EnumProperty.Value);
} ```
The output correctly shows `Value3`.

````