JSON反序列化后的空子数据结构

Question

I have an object that has a property which is a List of other custom objects. It actually drills down many tiers of custom object properties, but let's just look at the last 3 levels of the object.

{
    "version" : {
        "version_data" : [ {
            "version_value" : "6.06"
        }, {
            "version_value" : "7.10"
        }, {
            "version_value" : "8.04"
        }, {
            "version_value" : "8.10"
        } ]
    }
}

So my classes look like so:

public class Version
{
    [Required()]
    public Version_Data version_data { get; set; }
}
public class Version_Data
{
    [MinLength(1)]
    public List<Version_Data_Item> items { get; set; }
}
public class Version_Data_Item
{
    [Required()]
    public string version_value { get; set; }
}

I was able to extract one version_data_item

{
     "version_value" : "6.06"
}

and if I deserialize that JSON I am able to call something like: deserializedObject.version_value and it returns 6.06

The problem I run into is the upper levels. For example, I then extract the "Version_Data" object from the data

{
    "version_data" : [ {
        "version_value" : "6.06"
    }, {
        "version_value" : "7.10"
    }, {
        "version_value" : "8.04"
    }, {
        "version_value" : "8.10"
    } ]
}

that deserializes into a Version_Data (no exceptions raised at least), but when I debug it says the list is null .

What am I missing?

Answer 1

Your version_data should be called items:

{
    "items" : [ {
        "version_value" : "6.06"
    }, {
        "version_value" : "7.10"
    }, {
        "version_value" : "8.04"
    }, {
        "version_value" : "8.10"
    } ]
}

Answer 2

For generation C# from JSON you can use very helpful web generator .

Your correct models are here:

public class VersionData
{
    public string version_value { get; set; }
}

public class Version
{
    public List<VersionData> version_data { get; set; }
}

public class RootObject
{
    public Version version { get; set; }
}

Answer 3

Are you using Newtonsoft's JSON? The structure does not look correct. Unless you use custom parser, the structure should be like this: https://app.quicktype.io?share=Olvtc5B3C1zg7hy2CJgp