似乎无法摆脱错误C#控制台应用程序 [英] cant seem to get rid of error c# console app

问题描述

在导入"部分的字符串"下出现一条摇摆不定的红色线条(在下面的代码中标记为删除线)，错误为预期类，委托，枚举，接口或结构"

任何人都知道我要去哪里哪里

I get a red wiggly line under ''string'' in the Import section (marked with a strikethrough in my code below) with the error "Expected class, delegate, enum, interface, or struct"

anyone know where im going wrong

namespace MEFProgram
{
    [Import (typeof(IMessage))]
    public string GetMessage {get;set;}


    class Program
    {
        static void Main(string[] args)
        {
            Program obj = new Program();
            obj.Compose();
        }

        void Compose()
        {
            var catalog = new TypeCatalog();
            var container = new CompositionContainer();
            container.ComposeParts(catalog);
            Console.WriteLine(GetMessage);
            Console.ReadLine();
        }
    }
}

class plugIN
{
    [Export(typeof(IMessage))]
    string GiveMessage
    {
        get
        {
            return "Message Inserted by MEF";
        }
    }
}

推荐答案

public string GetMessage {get;set;}

不在类之内，不能在名称空间中使用getter和setter.

Is not within a class you can not have a getter ans setter in the namespace.

该属性不应该超出该类吗?只是一个猜测..

Should the attribute not go above the class ? Just a guess..

namespace MEFProgram
{
    public string GetMessage {get;set;}
 

    [Import (typeof(IMessage))]
    class Program
    {

这通常是由于额外的封闭形而引起的.
请参阅以下答案以获取更多信息.
预期的类，委托，枚举，接口，或struct [

This is often caused by an extra a closing paranthesis.
Refer to the below answer for more information.
Expected class,delegate,enum, interface,or struct[^]

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