本文介绍了如何访问JArray元素的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下的Json从Twitter得到了
I have the following Json gotten from Twitter
+ token {[
{
"trends": [
{
"name": "Croke Park II",
"url": "http://twitter.com/search?q=%22Croke+Park+II%22",
"promoted_content": null,
"query": "%22Croke+Park+II%22",
"events": null
},
{
"name": "#twiznight",
"url": "http://twitter.com/search?q=%23twiznight",
"promoted_content": null,
"query": "%23twiznight",
"events": null
},
{
"name": "#Phanhattan",
"url": "http://twitter.com/search?q=%23Phanhattan",
"promoted_content": null,
"query": "%23Phanhattan",
"events": null
},
{
"name": "#VinB",
"url": "http://twitter.com/search?q=%23VinB",
"promoted_content": null,
"query": "%23VinB",
"events": null
},
{
"name": "#Boston",
"url": "http://twitter.com/search?q=%23Boston",
"promoted_content": null,
"query": "%23Boston",
"events": null
},
{
"name": "#rtept",
"url": "http://twitter.com/search?q=%23rtept",
"promoted_content": null,
"query": "%23rtept",
"events": null
},
{
"name": "Facebook",
"url": "http://twitter.com/search?q=Facebook",
"promoted_content": null,
"query": "Facebook",
"events": null
},
{
"name": "Ireland",
"url": "http://twitter.com/search?q=Ireland",
"promoted_content": null,
"query": "Ireland",
"events": null
},
{
"name": "Everton",
"url": "http://twitter.com/search?q=Everton",
"promoted_content": null,
"query": "Everton",
"events": null
},
{
"name": "Twitter",
"url": "http://twitter.com/search?q=Twitter",
"promoted_content": null,
"query": "Twitter",
"events": null
}
],
"as_of": "2013-04-17T13:05:30Z",
"created_at": "2013-04-17T12:51:41Z",
"locations": [
{
"name": "Dublin",
"woeid": 560743
}
]
}
]} Newtonsoft.Json.Linq.JToken {Newtonsoft.Json.Linq.JArray}
问题是，我似乎无法访问任何元素。我曾尝试foreach循环和正常循环运行，似乎从来没有访问单个elemets它总是结束了访问整个区域。
Problem is I can't seem to access any of the elements. I have tried foreach loops and normal for loops and can never seem to access individual elemets it always ends up accessing the whole area.
任何想法我如何访问各个元素？此JSON JArray
Any idea how I access the individual elements in this Json JArray?
推荐答案
更新 - 我核实了以下工作。也许你JArray的创作是不完全正确。
Update - I verified the below works. Maybe the creation of your JArray isn't quite right.
[TestMethod]
public void TestJson()
{
var jsonString = @"{""trends"": [
{
""name"": ""Croke Park II"",
""url"": ""http://twitter.com/search?q=%22Croke+Park+II%22"",
""promoted_content"": null,
""query"": ""%22Croke+Park+II%22"",
""events"": null
},
{
""name"": ""Siptu"",
""url"": ""http://twitter.com/search?q=Siptu"",
""promoted_content"": null,
""query"": ""Siptu"",
""events"": null
},
{
""name"": ""#HNCJ"",
""url"": ""http://twitter.com/search?q=%23HNCJ"",
""promoted_content"": null,
""query"": ""%23HNCJ"",
""events"": null
},
{
""name"": ""Boston"",
""url"": ""http://twitter.com/search?q=Boston"",
""promoted_content"": null,
""query"": ""Boston"",
""events"": null
},
{
""name"": ""#prayforboston"",
""url"": ""http://twitter.com/search?q=%23prayforboston"",
""promoted_content"": null,
""query"": ""%23prayforboston"",
""events"": null
},
{
""name"": ""#TheMrsCarterShow"",
""url"": ""http://twitter.com/search?q=%23TheMrsCarterShow"",
""promoted_content"": null,
""query"": ""%23TheMrsCarterShow"",
""events"": null
},
{
""name"": ""#Raw"",
""url"": ""http://twitter.com/search?q=%23Raw"",
""promoted_content"": null,
""query"": ""%23Raw"",
""events"": null
},
{
""name"": ""Iran"",
""url"": ""http://twitter.com/search?q=Iran"",
""promoted_content"": null,
""query"": ""Iran"",
""events"": null
},
{
""name"": ""#gaa"",
""url"": ""http://twitter.com/search?q=%23gaa"",
""promoted_content"": null,
""query"": ""gaa"",
""events"": null
},
{
""name"": ""Facebook"",
""url"": ""http://twitter.com/search?q=Facebook"",
""promoted_content"": null,
""query"": ""Facebook"",
""events"": null
}]}";
var twitterObject = JToken.Parse(jsonString);
var trendsArray = twitterObject.Children<JProperty>().FirstOrDefault(x => x.Name == "trends").Value;
foreach (var item in trendsArray.Children())
{
var itemProperties = item.Children<JProperty>();
//you could do a foreach or a linq here depending on what you need to do exactly with the value
var myElement = itemProperties.FirstOrDefault(x => x.Name == "url");
var myElementValue = myElement.Value; ////This is a JValue type
}
}
这么称呼您JArray孩子得到JArray每个JObject。调用每个JObject儿童访问对象的属性。
So call Children on your JArray to get each JObject in JArray. Call Children on each JObject to access the objects properties.
foreach(var item in yourJArray.Children())
{
var itemProperties = item.Children<JProperty>();
//you could do a foreach or a linq here depending on what you need to do exactly with the value
var myElement = itemProperties.FirstOrDefault(x => x.Name == "url");
var myElementValue = myElement.Value; ////This is a JValue type
}
这篇关于如何访问JArray元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！