C#•2w ago

✅ Non-nullable property netstandard2.0

Hello, In new .NET versions there's the required keyword for this warning, but what's the best way to solve this if not possible? Recently allowed a library to support older .NET versions, and I have no idea what's the preferred way to resolve this.

20 Replies

Sehra•2w ago

try setting LangVersion to 11.0 or higher

CoreOP•2w ago

it is set to latest

c#
<PropertyGroup>
    <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <LangVersion>latest</LangVersion>
</PropertyGroup>

c#
<PropertyGroup>
    <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0;net7.0;net8.0;net9.0</TargetFrameworks>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <LangVersion>latest</LangVersion>
</PropertyGroup>

Oh it actually works Great

CoreOP•2w ago

It doesn't afterall

Sehra•2w ago

it's just attributes, so could include them manually

namespace System.Runtime.CompilerServices;
class RequiredMemberAttribute : Attribute;
class CompilerFeatureRequiredAttribute(string name) : Attribute;

namespace System.Runtime.CompilerServices;
class RequiredMemberAttribute : Attribute;
class CompilerFeatureRequiredAttribute(string name) : Attribute;

Unknown User•2w ago

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CoreOP•2w ago

you mean netstandard 2? Shouldk I completely ditch it?

Unknown User•2w ago

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CoreOP•2w ago

this one not, but the next one will be

Unknown User•2w ago

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CoreOP•2w ago

Got it, most open source propejcts support these, and that's why I was trying it out

Unknown User•2w ago

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CoreOP•2w ago

Is netstandard 2.1 only used by unity?

CoreOP•2w ago

Unknown User•2w ago

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CoreOP•2w ago

yeah I diteched it Thanks for the details How does this work? I get that it will enable all the new syntaxes that are possible in newer .NET versions, like nullable types, required properties, etc. But what happens after building the package, and required was used? Will it simply be omitted in the compiled executable?

Sehra•2w ago

required is only an attribute as i understand it roslyn only looks for specific attributes, and it doesn't matter where they are defined

Unknown User•2w ago

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CoreOP•2w ago

Great, I read the wiki, but I still couldn't entirely understand how it works Thank you again for helping me $close

MODiX•2w ago

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✅ Non-nullable property netstandard2.0

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