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亚音速SimpleRepository存储成员类

subsonic-simplerepository subsonic serialization sql c#

qdot · 技术社区 · 16 年前

我是C和亚音速的新手。我正在努力解决以下问题:

public class UnknownInt { 
  public int val;
  public bool known;
}

public class Record {
  public int ID;
  public UnknownInt data;
}

我正在尝试构建一个问卷系统,在这个系统中,用户可以提供一个“整数”答案、“未知”答案,以及一个空答案(问题尚未回答)

换句话说-我的未知类需要实现哪些接口才能符合条件并转换为亚音速3.0简单存储库?

干杯!

2 回复 | 直到 16 年前

Jürgen Steinblock 15 年前

我会这样做:

public class Record
{
    public int ID {get;set;}

    [EditorBrowsable(EditorBrowsableState.Never)]
    public int UnknownIntValue {get;set;}

    [EditorBrowsable(EditorBrowsableState.Never)]
    public bool UnknownIntKnown {get;set;}

    [SubSonicIgnore]
    public UnknownInt UnknownInt
    {
        get
        {
            return new UnknownInt()
            {
                val = UnknownIntValue,
                known = this.UnknownIntKnown
            };
        }
        set
        {
             this.UnknownIntValue = value.val;
             this.UnknownIntKnown = value.known;
        }
    }

}

public struct UnknownInt
{ 
    public readonly int Val;
    public readonly bool Known;

    public UnknownInt(int val, bool known) 
    {
        this.Val = val;
        this.Known = known;
    }

    public override string ToString()
    {
        return String.Format("{0} ({1})",
           Val, Known == true ? "known" : "unknown");
    }
    public override bool Equals(Object obj) 
    {
       return obj is UnknownInt && this == (UnknownInt)obj;
    }
    public static bool operator ==(UnknownInt x, UnknownInt y) 
    {
       return x.Val == y.Val && x.Known == y.Known;
    }
    public static bool operator !=(UnknownInt x, UnknownInt y) 
    {
       return !(x == y);
    }

}

其基本思想是必须创建存储用户定义类型但对intellisense隐藏的列(System.ComponentModel.EditorBrowsable属性)。

用法示例:

// 1. Step Create item1
var item1 = new Record();
item1.ID = 1;
item1.UnknownInt = new UnknownInt(1, true);

// 2. Setp Create item2
var item2 = new Record();
item2.ID = 2;
item2.UnknownImt = new UnknownInt(1, false);

if (item1.UnknownInt == item2.UnknownInt)
    Console.WriteLine("???");
else
    Console.WriteLine("Profit!!!");