c# - 如何从 JObject 中按键获取值？

Question

我有一个这样的 JObject:

{
  "@STARTDATE": "'2016-02-17 00:00:00.000'",
  "@ENDDATE": "'2016-02-18 23:59:00.000'"
}

我想从 JObject 中获取 @STARTDATE 和 @ENDDATE 值。

---

这是我尝试完成任务的示例代码:

JObject json = JObject.Parse("{\"@STARTDATE\": \"'2016-02-17 00:00:00.000'\",\"@ENDDATE\": \"'2016-02-18 23:59:00.000'\"}");
var key = "@STARTDATE";

var value = GetJArrayValue(json, key);

private string GetJArrayValue(JObject yourJArray, JToken key)
{
    string value = "";
    foreach (JToken item in yourJArray.Children())
    {
        var itemProperties = item.Children<JProperty>();
        //If the property name is equal to key, we get the value
        var myElement = itemProperties.FirstOrDefault(x => x.Name == key.ToString());
        value = myElement.Value.ToString(); //It run into an exception here because myElement is null
        break;
    }
    return value;
}

注意:以上代码无法从JObject中按键获取值。

---

您能帮我找到一种方法从 JObject 中按键获取值吗？

Answer 1

这应该会有所帮助 -

var json = "{'@STARTDATE': '2016-02-17 00:00:00.000',  '@ENDDATE': '2016-02-18 23:59:00.000' }";
var fdate = JObject.Parse(json)["@STARTDATE"];