Generic type names

[HavenDV]

C# 9:

// Definitions:
public record RemoteMethodBase(string Name, string Service);

public record RemoteMethod<T1, T2, T3>(string Name, string Service) : RemoteMethodBase(Name, Service)
{
    public RemoteMethodCall Call(T1 value1, T2 value2, T3 value3)
    {
        return new(this, new object?[] { value1, value2, value3 });
    }
}

public record RemoteMethodCall(RemoteMethodBase Method, IEnumerable<object?>? Arguments = null);

// Usage:
public static RemoteMethod<string, string, string> ValidateUser2 { get; } = new (nameof(ValidateUser2), Name);

C# 10+:

// Definitions:
public RemoteMethodCall Call(T1, T2, T3)
{
     return new(this, new object?[] { value1, value2, value3 });
// or
     return new(this, new object?[] { valueof(T1), valueof(T2), valueof(T3) });
}

// or 
[GenericTypeNamesAttribute("username", "password", "authKey")]
public record RemoteMethod<T1, T2, T3>(string Name, string Service) : RemoteMethodBase(Name, Service)

// Usage:
public static RemoteMethod<string username, string password, string authKey> ValidateUser2 { get; } = new (nameof(ValidateUser2), Name);

ValidateUser2(  // IDE will prompt us 'username'
ValidateUser2("username",  // IDE will prompt us 'password'

[CyrusNajmabadi]

I honestly don't know what this proposal is asking for. Can you provide more info?

[jnm2]

I think this is (or involves) #1883. Related: #2738.

[HavenDV]

Yes, that's what I mean, only in the context of all Generic types.