我需要通过遍历列来动态创建一个 Json 对象。因此,声明一个空的 JSON 对象,然后动态向其添加元素。
例如:
List<String> columns = new List<String>{"FirstName","LastName"};
var jsonObj = new {};
for(Int32 i=0;i<columns.Count();i++)
jsonObj[col[i]]="Json" + i;
最终的 json 对象应该是这样的:
jsonObj={FirstName="Json0", LastName="Json1"};
[TestFixture]
public class DynamicJson
{
[Test]
public void Test()
{
dynamic flexible = new ExpandoObject();
flexible.Int = 3;
flexible.String = "hi";
var dictionary = (IDictionary<string, object>)flexible;
dictionary.Add("Bool", false);
var serialized = JsonConvert.SerializeObject(dictionary); // {"Int":3,"String":"hi","Bool":false}
}
}
我找到了一个与DPeden非常相似的解决方案,尽管不需要使用IDictionary,但您可以直接从ExpandoObject
传递到JSON转换:
dynamic foo = new ExpandoObject();
foo.Bar = "something";
foo.Test = true;
string json = Newtonsoft.Json.JsonConvert.SerializeObject(foo);
输出变为:
{ "FirstName":"John", "LastName":"Doe", "Active":true }
您应该使用JavaScriptSerializer
.这可以将实际类型序列化为 JSON :)
参考: http://msdn.microsoft.com/en-us/library/system.web.script.serialization.javascriptserializer.aspx
编辑:像这样的东西?
var columns = new Dictionary<string, string>
{
{ "FirstName", "Mathew"},
{ "Surname", "Thompson"},
{ "Gender", "Male"},
{ "SerializeMe", "GoOnThen"}
};
var jsSerializer = new JavaScriptSerializer();
var serialized = jsSerializer.Serialize(columns);
输出:
{"FirstName":"Mathew","Surname":"Thompson","Gender":"Male","SerializeMe":"GoOnThen"}
使用 dynamic
和 JObject
:
dynamic obj = new JObject();
obj.ProductName = "Elbow Grease";
obj.Enabled = true;
obj.StockCount = 9000;
分配属性的另一种方法:
var obj = new JObject();
obj["ProductName"] = "Elbow Grease";
obj["Enabled"] = true;
obj["StockCount"] = 9000;
或使用JObject.FromObject
:
JObject obj = JObject.FromObject(new
{
ProductName = "Elbow Grease",
Enabled = true,
StockCount = 9000
});
它们都产生以下结果:
Console.WriteLine(obj.ToString());
// {
// "ProductName": "Elbow Grease",
// "Enabled": true,
// "StockCount": 9000
// }
https://www.newtonsoft.com/json/help/html/CreateJsonDynamic.htm