C# json无法访问Newtonsoft.json.Linq.JValue上的子值
我不熟悉json逻辑,我有一个复杂的json,我必须从url读取,并使用c#绑定到数据网格 我的json文件:C# json无法访问Newtonsoft.json.Linq.JValue上的子值,c#,json,linq,C#,Json,Linq,我不熟悉json逻辑,我有一个复杂的json,我必须从url读取,并使用c#绑定到数据网格 我的json文件: { "expand": "schema,names", "startAt": 0, "maxResults": 50, "total": 6, "issues": [{ "expand": "operations,versionedRepresentations,editmeta,changelog,renderedFields", "id": "10502",
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我试图用以下代码阅读:
JObject oJson = JObject.Parse(json);
var issueList = (from colIssies in oJson["expand"]["issues"]
select colIssies).ToList();
但我得到了这个错误:System.invalidoOperationException:“无法访问Newtonsoft.Json.Linq.JValue上的子值。”
谁能帮帮我吗?
提前感谢。有很多方法可以将json反序列化到对象,这一切归结为以后需要如何处理数据。 假设您只需要数据的一个子集,因此可以使用给定模板反序列化为匿名对象(使用) 然后,您可以灵活地将提取的数据投影到任何给定的形状
var instance = JsonConvert.DeserializeAnonymousType(data, definition);
var projection = from issue in instance.issues
let date = issue.fields?.created
where date <= DateTime.Now
select new
{
id = issue.id,
key = issue.key,
type = issue.fields?.issuetype?.name,
created = issue.fields?.created,
project = issue.fields?.project?.name,
creator = issue.fields?.creator?.name,
assignee = issue.fields?.assignee?.name,
status = issue.fields?.status?.name,
};
var instance=JsonConvert.DeserializeAnonymousType(数据,定义);
var projection=来自实例中的问题。问题
让日期=问题。字段?已创建
在date中,有很多方法可以将json反序列化到对象,这一切归结为以后需要对数据做什么。
假设您只需要数据的一个子集,因此可以使用给定模板反序列化为匿名对象(使用)
然后,您可以灵活地将提取的数据投影到任何给定的形状
var instance = JsonConvert.DeserializeAnonymousType(data, definition);
var projection = from issue in instance.issues
let date = issue.fields?.created
where date <= DateTime.Now
select new
{
id = issue.id,
key = issue.key,
type = issue.fields?.issuetype?.name,
created = issue.fields?.created,
project = issue.fields?.project?.name,
creator = issue.fields?.creator?.name,
assignee = issue.fields?.assignee?.name,
status = issue.fields?.status?.name,
};
var instance=JsonConvert.DeserializeAnonymousType(数据,定义);
var projection=来自实例中的问题。问题
让日期=问题。字段?已创建
where date您发布了917行JSON,然后只是一段代码。请将此简化为一个简单的JSON示例,该示例仍然演示了您要做的事情和问题。通过在查询中包含“expand”,您想要实现什么?@DylanNicholson没有什么特别的。我试着阅读json结构,但它似乎是您想要的“问题”节点,与“扩展”节点无关。你说得对。你已经发布了917行JSON,然后只是一段代码。请将此简化为一个简单的JSON示例,该示例仍然演示了您要做的事情和问题。通过在查询中包含“expand”,您想要实现什么?@DylanNicholson没有什么特别的。我试着阅读json结构,但它似乎是您想要的“问题”节点,与“扩展”节点无关。你有权利。