New c# 11 required keyword behavior

[ebfortin]

I just installed .NET 7 preview 5 and am playign with the required keyword. In one instance I have a parameterless constructor that set a required property to some value. However I get a CS9035 error (Required member must be set in the obejct initializer or attribute constructor). I wasn't expecting that. I thought setting it in the constructor would make the required requriement fulfilled.

Is this the intended behavior?

[HaloFour]

I believe you need to apply the SetsRequiredMembers attribute to the constructor: https://github.com/dotnet/csharplang/blob/main/proposals/required-members.md#setsrequiredmembersattribute

[ebfortin]

Cool there is a solution to my use case even if what I describe is the intended behavior. Thanks.

[DavidThielen]

that link is bad

[333fred]

https://github.com/dotnet/csharplang/blob/main/proposals/csharp-11.0/required-members.md is the moved link.

[333fred]

Is this the intended behavior?

Yes, that is correct. Required members are a part of the public contract of your constructor, and we do not do any inference of public contracts in C#.