[英]In C# how to convert list of property names and values to an instantiated class object
我有以下格式的键/值列表
var temp = new Dictionary<string, string>();
temp["Prop1"] = "Test1";
temp["Prop2"] = "Test2";
temp["SubProperty.Sub1"] = "Test3";
temp["SubProperty.Sub2"] = "Test4";
temp["ListData[0].List1"] = "Test5";
temp["ListData[0].List2"] = "Test6";
temp["ListData[1].List1"] = "Test7";
temp["ListData[1].List2"] = "Test8";
有没有一种简单的方法可以将此列表转换为一个新对象,如下所示。
public class MainClass
{
public string Prop1 { get; set; }
public string Prop2 { get; set; }
public SubClass SubProperty { get; set; }
public ListClass[] ListData { get; set; }
}
public class ListClass
{
public string List1 { get; set; }
public string List2 { get; set; }
}
public class SubClass
{
public string Sub1 { get; set; }
public string Sub2 { get; set; }
}
我知道 ASP MVC 会做这样的事情,采用表单名称和值并自动解析为实例化的属性。 但是找不到他们使用的东西。 任何帮助表示赞赏。 希望转换为类或什至 JSON 会很有用,并且可以通过这种方式转换为对象
创建以下使用 ExpandoObjects 似乎可以满足我的需要。 如果遇到任何其他情况将更新
var temp = new Dictionary<string, string>();
temp["Prop1"] = "Test1";
temp["Prop2"] = "Test2";
temp["SubProperty.Sub1"] = "Test3";
temp["SubProperty.Sub2"] = "Test4";
temp["ListData[0].List1"] = "Test5";
temp["ListData[0].List2"] = "Test6";
temp["ListData[1].List1"] = "Test7";
temp["ListData[1].List2"] = "Test8";
temp["ListData[5].List1"] = "Test9";
temp["ListData[5].List2"] = "Test10";
var justjson = PropertiesToObject.ToJson(temp);
var myobj = PropertiesToObject.ToObject<MainClass>(temp);
public static class PropertiesToObject
{
public static T ToObject<T>(Dictionary<string, string> dict)
{
var json = ToJson(dict);
return JsonConvert.DeserializeObject<T>(json);
}
public static string ToJson(Dictionary<string, string> dict)
{
dynamic expando = new ExpandoObject();
foreach (var item in dict)
{
AddProperty(expando, item.Key, item.Value);
}
return JsonConvert.SerializeObject(expando);
}
private static ExpandoObject SetValueIfListOrNot(ExpandoObject expando,string propertyName, object propertyValue)
{
bool isList = propertyName.Contains("[");
var listName = propertyName.Split('[').FirstOrDefault();
int listindex = isList ? int.Parse(propertyName.Split('[').LastOrDefault()?.Split(']').FirstOrDefault()) : 0;
var expandoDict = expando as IDictionary<string, object>;
if (expandoDict.ContainsKey(listName) == false)
{
if (!isList)
{
expandoDict.Add(listName, propertyValue);
}
else
{
var lobj = new dynamic[0];
expandoDict.Add(listName, lobj);
}
}
var exi = expandoDict[listName];
if(exi.GetType().IsArray)
{
var ma = exi as dynamic[];
var len = ma.Length;
if (len < listindex + 1)
{
Array.Resize(ref ma, listindex + 1);
expandoDict[listName] = ma;
}
var item = ma[listindex];
if(item == null)
{
ma[listindex] = propertyValue;
}
return ma[listindex];
} else
{
return exi as ExpandoObject;
}
}
private static void AddProperty(ExpandoObject expando, string propertyName, object propertyValue)
{
var subprops = propertyName.Split('.');
var propname = subprops.First();
var rest = string.Join(".", subprops.Skip(1).ToList());
if (rest == "")
{
SetValueIfListOrNot(expando, propname, propertyValue);
} else
{
var expa = SetValueIfListOrNot(expando, propname, new ExpandoObject());
AddProperty(expa, rest, propertyValue);
}
}
}
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