C# 在类中通过反射循环结构

我想使用反射将存储在时间内的字符串连接到字符串s中。后来我不得不修改类和结构，我不想调整连接代码

通过对类中的每个结构使用foreach循环，我得到了想要的结果

public struct volt_struct
{
    public string volt1;
    public string volt2;
    public string volt2;
    public string volt3;
}
private class Injection_class
{
    public volt_struct stru1;
    public volt_struct stru2;
    public volt_struct stru3;
    public volt_struct stru4;
    public volt_struct stru5;
    public volt_struct stru6;
}

public void main()
{
    Injection_class Time = new Injection_class();

    //Here is code that fills Time with Time values as string type

    string s="";
    FieldInfo[] fi_inner = Time.stru1.GetType().GetFields();
    FieldInfo[] fi_outer = Time.GetType().GetFields();

    // This part is wrong, but shows what I want to achive.
    foreach(FieldInfo field_outer in fi_outer)
    {
        foreach(FieldInfo field_inner in fi_inner)
        {
            s = string.concat(s+field_outer.field_inner.GetValue(Time) + ";");
        }
    }

}

我想像我给出的第一个例子那样实现它。

---

这可能吗？

在“field\u internal”上操作的FieldInfo属性需要引用“volt\u struct”类型的对象，因此时间在这里不起作用。您需要首先对“field_outer”执行GetValue，有点像这样：

 foreach (FieldInfo field in fi_inner)
{
    s = string.Concat(s + field.GetValue(Time.stru1) + ";");
    //field.SetValue(Time, "not measured"); //reset value
}
foreach (FieldInfo field in fi_inner)
{
    s = string.Concat(s + field.GetValue(Time.stru2) + ";");
    //field.SetValue(Time, "not measured"); //reset value
}
//and so one for each other struct

foreach(FieldInfo field_outer in fi_outer)
{
    var outer_object = field_outer.GetValue(Time);
    if (outer_object == null) throw someexception;

    foreach (FieldInfo field_inner in fi_inner)
    {
        s = string.concat(s+field_inner.GetValue(outer_object) + ";");
    }
}

---

如果要更改父类型和子类型，可以将它们作为System.Type参数传入，也可以编写带有两个类型参数的泛型函数。您还可以将'fi_inner='移动到外部循环中，并执行fi_inner=outer_object.GetType.GetFields。这将连接任何子对象上的字符串，无论其类型如何。

无需反射即可轻松完成此操作。按如下方式更改结构和类：

 foreach (FieldInfo field in fi_inner)
{
    s = string.Concat(s + field.GetValue(Time.stru1) + ";");
    //field.SetValue(Time, "not measured"); //reset value
}
foreach (FieldInfo field in fi_inner)
{
    s = string.Concat(s + field.GetValue(Time.stru2) + ";");
    //field.SetValue(Time, "not measured"); //reset value
}
//and so one for each other struct

foreach(FieldInfo field_outer in fi_outer)
{
    var outer_object = field_outer.GetValue(Time);
    if (outer_object == null) throw someexception;

    foreach (FieldInfo field_inner in fi_inner)
    {
        s = string.concat(s+field_inner.GetValue(outer_object) + ";");
    }
}

现在，您可以使用漂亮、方便的阵列：

public struct volt
{
    private string[] _volts = new string[4];
    public string[] volts {get {return _volts;} }

    public string volt1 {
       get {return _volts[0];}
       set {_volts[0] = value;}
    }
    public string volt2 {
       get {return _volts[1];}
       set {_volts[1] = value;}
    }
    public string volt3 {
       get {return _volts[2];}
       set {_volts[2] = value;}
    }
    public string volt4 {
       get {return _volts[3];}
       set {_volts[3] = value;}
    }
}

private class Injection
{
    private _volt[] = new volt[5];

    public volt[] {get {return _volt;} }

    public volt stru1 {
        get {return _volt[0];}
        set {_volt[0] = value;}
    }
    public volt stru2 {
        get {return _volt[1];}
        set {_volt[1] = value;}
    }
    public volt stru3 {
        get {return _volt[2];}
        set {_volt[2] = value;}
    }
    public volt stru4 {
        get {return _volt[3];}
        set {_volt[3] = value;}
    }
    public volt stru5 {
        get {return _volt[4];}
        set {_volt[4] = value;}
    }
    public volt stru6 {
        get {return _volt[5];}
        set {_volt[5] = value;}
    }
}

---

这会奏效的。但是出于操作的考虑，我还想建议在Injection类中添加一个额外的volt_struct[]属性，并在循环中使用该数组。谢谢你的建议。我将在以后的代码中考虑它。但对于这个问题，我认为@MarkRabjohn给了我更好的答案。