C＃属性数组符号 [英] C# properties as array notation

问题描述

使用JavaScript有可能使用点符号或数组符号来访问对象。

  VAR myArray的= {E1：elem1，E2：elem2时，E3：elem3E4elem4};
VAR VAL1 = myArray的[E1];
VAR将val2 = myArray.e1;
 

是否有可能做到这一点使用C＃？

这是我尝试：

 的[AcceptVerbs（HttpVerbs.Post）
公众的ActionResult编辑（INT ID，的FormCollection frmVals）
{
  字符串值;
  所有者所有者=新主人（）;  的foreach（在frmVals.AllKeys VAR键）
  {
    值= frmVals [关键]
    主[关键] =价值;
  }
}
 

解决方案

虽然没有办法用C＃正好做到这一点。你可以改变你code以下几种方式可以实现你的目标。首先，你可以使用一个字典是这样的：

  VAR东西=新词典＆LT;字符串对象＆gt;（）{
    {财产，价值}，
    {property1，1}
};
的foreach（在一些VAR KEYVAL）{
    VAR财产= keyVal.Key;
    VAR为PropertyValue = keyVal.Value;
}
 

另一种选择是动态地做到这一点：

 动态somethingDyn =新System.Dynamic.ExpandoObject（）;
somethingDyn.property =值;
somethingDyn.property1 = 1;VAR somethingDynDict =（IDictionary的＆LT;字符串对象＆gt;）somethingDyn;
VAR propValue = somethingDyn [属性];的foreach（在somethingDynDict VAR KEYVAL）{
    VAR财产= keyVal.Key;
    VAR为PropertyValue = keyVal.Value;
}
 

如果您需要通过性能强类型的对象，您可以使用反射到迭代：

  VAR所有者=新Metis.Domain.User（）;
。变种属性= owner.GetType（）的GetProperties（）;
的foreach（在性能VAR道具）{
    对象值= prop.GetValue（所有者，NULL）;
}
 

Using JavaScript it's possible to access an object using the dot notation or array notation.

var myArray = {e1:"elem1",e2:"elem2",e3:"elem3",e4:"elem4"};
var val1 = myArray["e1"];
var val2 = myArray.e1;

Is it possible to accomplish this using C#?

This is what I have attempted:

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Edit(int id, FormCollection frmVals)
{
  string value;
  Owner owner = new Owner();

  foreach (var key in frmVals.AllKeys)
  {
    value = frmVals[key];
    owner[key] = value;  
  }
}

解决方案

While there is no way to do this exactly with C#. You could change your code in several ways that may accomplish your goal. First, you could use a Dictionary like this:

var something = new Dictionary<string, object>() {
    { "property", "value"},
    { "property1", 1}
};
foreach (var keyVal in something) {
    var property = keyVal.Key;
    var propertyValue = keyVal.Value;
}

Another option would be to do it dynamically:

dynamic somethingDyn = new System.Dynamic.ExpandoObject();
somethingDyn.property = "value";
somethingDyn.property1 = 1;

var somethingDynDict = (IDictionary<string, object>)somethingDyn;
var propValue = somethingDyn["property"];

foreach (var keyVal in somethingDynDict) {
    var property = keyVal.Key;
    var propertyValue = keyVal.Value;
}

If you need to iterate through properties on a strongly typed object you could use reflection:

var owner = new Metis.Domain.User();
var properties = owner.GetType().GetProperties();
foreach (var prop in properties) {
    object value = prop.GetValue(owner, null);
}

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