Access Modifier error.

Question

User1421620300 posted

This is the controller code for a .svc file. It is not apparent as to why i receive the following error! I believe that it states their is something wrong with type or format of public access modifier for this version state supposedly. 

Link: https://ibb.co/znTV0dH

[OperationContract]
[WebInvoke(ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Bare,
UriTemplate = "Fight/{Id1}/{Id2}", Method = "GET")]

public string Fight(string Id1, string Id2)  //error code! (public) 
{
SuperHero hero1 = Data.SuperHeroes.Find(hero => hero.Id == int.Parse(Id1));
SuperHero hero2 = Data.SuperHeroes.Find(hero => hero.Id == int.Parse(Id2));

if (hero1.Combat > hero2.Combat)
{
return $"{hero1.HeroName} wins!";
}

if (hero2.Combat > hero1.Combat)
{
return $"{hero2.HeroName} wins!";
}
return "its a tie!";

}
}
}

Severity Code Description Project File Line Suppression State
Error CS0106 The modifier 'public' is not valid for this item SuperHeroDB C:\Users\Andrew\Documents\Visual Studio 2015\MyProjects\SuperHeroDB\SuperHeroDB\Service\SuperHeroService.svc.cs 140 Active
Error CS8652 The feature 'local function attributes' is currently in Preview and *unsupported*. To use Preview features, use the 'preview' language version.

SuperHeroDB C:\Users\Andrew\Documents\Visual Studio 2015\MyProjects\SuperHeroDB\SuperHeroDB\Service\SuperHeroService.svc.cs 136 Active

Answer 1

User475983607 posted

You did not share all the relevant code so I'm guessing.  Operational contracts are Interfaces which do not have access modifiers or a body of code.  The implementation of the Interface has these features.  An Operation contract has the following pattern and within an Interface

[ServiceContract]
public interface IService1
{
    [OperationContract]
    string Fight(string Id1, string Id2);
}

The implantation of the Interface has method body.

[WebInvoke(ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Bare, UriTemplate = "Fight/{Id1}/{Id2}", Method = "GET")]
public string Fight(string Id1, string Id2)  //error code! (public) 
{
    SuperHero hero1 = Data.SuperHeroes.Find(hero => hero.Id == int.Parse(Id1));
    SuperHero hero2 = Data.SuperHeroes.Find(hero => hero.Id == int.Parse(Id2));

    if (hero1.Combat > hero2.Combat)
    {
        return $"{hero1.HeroName} wins!";
    }

    if (hero2.Combat > hero1.Combat)
    {
        return $"{hero2.HeroName} wins!";
    }
    return "its a tie!";
} 

You've been on these forum for a long time.... Please use the "Insert/Edit Code samples" button when posting code on the forms.  

Answer 2

User1421620300 posted

I corrected error mgebhard, it was missing brackets in Controller class.. It was not apparent to me as i am following tutorial.