C# 从动态对象获取属性值
我试图通过指定属性名从动态对象获取属性值,它使用索引工作,但我需要传入特定的属性名来获取值[因为名称将存储在Db中,而不是索引中]C# 从动态对象获取属性值,c#,json,dynamic,C#,Json,Dynamic,我试图通过指定属性名从动态对象获取属性值,它使用索引工作,但我需要传入特定的属性名来获取值[因为名称将存储在Db中,而不是索引中] var serializer = new JavaScriptSerializer(); serializer.RegisterConverters(new[] { new DynamicJsonConverter() }); dynamic data = serializer.Deserialize(jsonText, typeof(object)); data
var serializer = new JavaScriptSerializer();
serializer.RegisterConverters(new[] { new DynamicJsonConverter() });
dynamic data = serializer.Deserialize(jsonText, typeof(object));
data.Response.Outcome.KeyValueOfstringOutcomepQnxSKQu["PropertyName"]
这是将jSON转换为动态类的代码,我正试图从指定属性获取动态类的值
public sealed class DynamicJsonConverter : JavaScriptConverter
{
public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
{
if (dictionary == null)
throw new ArgumentNullException("dictionary");
return type == typeof(object) ? new DynamicJsonObject(dictionary) : null;
}
public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
{
throw new NotImplementedException();
}
public override IEnumerable<Type> SupportedTypes
{
get { return new ReadOnlyCollection<Type>(new List<Type>(new[] { typeof(object) })); }
}
#region Nested type: DynamicJsonObject
private sealed class DynamicJsonObject : DynamicObject
{
private readonly IDictionary<string, object> _dictionary;
public DynamicJsonObject(IDictionary<string, object> dictionary)
{
if (dictionary == null)
throw new ArgumentNullException("dictionary");
_dictionary = dictionary;
}
public override string ToString()
{
var sb = new StringBuilder("{");
ToString(sb);
return sb.ToString();
}
private void ToString(StringBuilder sb)
{
var firstInDictionary = true;
foreach (var pair in _dictionary)
{
if (!firstInDictionary)
sb.Append(",");
firstInDictionary = false;
var value = pair.Value;
var name = pair.Key;
if (value is string)
{
sb.AppendFormat("{0}:\"{1}\"", name, value);
}
else if (value is IDictionary<string, object>)
{
new DynamicJsonObject((IDictionary<string, object>)value).ToString(sb);
}
else if (value is ArrayList)
{
sb.Append(name + ":[");
var firstInArray = true;
foreach (var arrayValue in (ArrayList)value)
{
if (!firstInArray)
sb.Append(",");
firstInArray = false;
if (arrayValue is IDictionary<string, object>)
new DynamicJsonObject((IDictionary<string, object>)arrayValue).ToString(sb);
else if (arrayValue is string)
sb.AppendFormat("\"{0}\"", arrayValue);
else
sb.AppendFormat("{0}", arrayValue);
}
sb.Append("]");
}
else
{
sb.AppendFormat("{0}:{1}", name, value);
}
}
sb.Append("}");
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
if (!_dictionary.TryGetValue(binder.Name, out result))
{
// return null to avoid exception. caller can check for null this way...
result = null;
return true;
}
result = WrapResultObject(result);
return true;
}
public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
{
if (indexes.Length == 1 && indexes[0] != null)
{
if (!_dictionary.TryGetValue(indexes[0].ToString(), out result))
{
// return null to avoid exception. caller can check for null this way...
result = null;
return true;
}
result = WrapResultObject(result);
return true;
}
return base.TryGetIndex(binder, indexes, out result);
}
private static object WrapResultObject(object result)
{
var dictionary = result as IDictionary<string, object>;
if (dictionary != null)
return new DynamicJsonObject(dictionary);
var arrayList = result as ArrayList;
if (arrayList != null && arrayList.Count > 0)
{
return arrayList[0] is IDictionary<string, object>
? new List<object>(arrayList.Cast<IDictionary<string, object>>().Select(x => new DynamicJsonObject(x)))
: new List<object>(arrayList.Cast<object>());
}
return result;
}
}
#endregion
}
期待得到
dynamic data = serializer.Deserialize(jsonText, typeof(object));
data.Response.Outcome.KeyValueOfstringOutcomepQnxSKQu["Icon"].Field.Value
O的预期值这里有一个解决方案,使用:
多亏了Risto,有没有办法做到这一点:data.Response.output.KeyValueofStringOutcome pqnxskqu为IEnumerable;通过传入要获取的字段的字符串作为示例:var x=“output.KeyValueOfstringOutcomepQnxSKQu as IEnumerable”;data.Response.x;我不明白你的问题,你想如何传递一个字符串?如果你的意思是“图标”-文本作为字符串,你可以将其重构为一个函数,其中你传递“图标”作为参数。这就是你的意思吗?Risto,我不能做特殊的粘贴。Value类在itI更新的答案上有一个Value属性,现在有了模型类的示例(请注意
[JsonProperty(“Value”)]
-名称冲突属性上方的属性)。
dynamic data = serializer.Deserialize(jsonText, typeof(object));
data.Response.Outcome.KeyValueOfstringOutcomepQnxSKQu["Icon"].Field.Value
dynamic data = JsonConvert.DeserializeObject(jsonText, typeof(object));
var list = data.Response.Outcome.KeyValueOfstringOutcomepQnxSKQu as IEnumerable<dynamic>;
var iconNode = list.FirstOrDefault(r => r.Key == "Icon");
var valueOfO = iconNode.Value.Value.Value;
public class Rootobject
{
public Response Response { get; set; }
}
public class Response
{
public Outcome Outcome { get; set; }
}
public class Outcome
{
public Keyvalueofstringoutcomepqnxskqu[] KeyValueOfstringOutcomepQnxSKQu { get; set; }
}
public class Keyvalueofstringoutcomepqnxskqu
{
public string Key { get; set; }
public Value Value { get; set; }
}
public class Value
{
public string DataType { get; set; }
public string Field { get; set; }
[JsonProperty("Value")]
public string Value1 { get; set; }
}