c# - 成员定义了不止一次的错误信息？

Question

我在 vs2010 中使用 c#，并正在学习 oop；我第一次尝试在我的 appCode 文件夹中声明对象提交时一直给我错误消息

this member defined more than once
ambiguity between Submission.SubmissionId and Submission.SubmissionId

此错误会引发每个变量(CustId、BroId、Coverage)。我遵循了在语法教程中找到的模型；那是问题吗？代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

public class Submission 
    {
        int SubmissionId;
        int CustId;
        int BroId;
        int Coverage;
        //Array Product[] products;

        public Submission() {}
        public int SubmissionId 
        {
            get { return SubmissionId; }
            set { SubmissionId = value; }
        }
        public int CustId
        {
            get { return CustId; }
            set { CustId = value; }
        }
        public int BroId
        {
            get { return BroId; }
            set { BroId = value; }
        }
        public int Coverage
        {
            get { return Coverage; }
            set { Coverage = value; }
        }
    } 

Answer 1

问题是您为变量和属性赋予了相同的名称。

您可以通过给它们不同的名称来修复它:

public class Submission 
{

    public Submission() {}

    private int submissionId;
    public int SubmissionId 
    { 
        get{ return this.submissionId; }
        set{ this.submissionId = value; }
    }

    private int custId ;
    public int CustId
    { 
        get{ return this.custId ; }
        set{ this.custId = value; }
    }

    private int broId ;
    public int BroId
    { 
        get{ return this.broId ; }
        set{ this.broId = value; }
    }

    private int coverage;
    public int Coverage
    { 
        get{ return this.coverage; }
        set{ this.coverage= value; }
    }


} 

阅读How to best name fields and properties .

---

此外，您可以使用 Auto-Implemented Properties :

In C# 3.0 and later, auto-implemented properties make property-declaration more concise when no additional logic is required in the property accessors. They also enable client code to create objects.

开始吧:

public class Submission 
{

    public Submission() {}

    public int SubmissionId { get; set; }

    public int CustId { get; set; }

    public int BroId { get; set; }

    public int Coverage { get; set; }

}