C# Parsing JSON String

问题:

I have tried countless methods to Parse my JSON string (Steam Public Data), yet nothing seems to work. I just want to be able to extract values from the string. For Example, obtaining the value of personaname which would return SlothGod. I have JSON.NET installed in my project.

Here is my JSON:

{
    "response": {
        "players": [
            {
                "steamid": "76561198301407459",
                "communityvisibilitystate": 3,
                "profilestate": 1,
                "personaname": "SlothGod",
                "lastlogoff": 1508389707,
                "commentpermission": 1,
                "profileurl": "http://steamcommunity.com/id/sleuthgud/",
                "avatar": "https://steamcdn-a.akamaihd.net/steamcommunity/public/images/avatars/09/09cea52b91136fb3306c57771a746db2823b91ba.jpg",
                "avatarmedium": "https://steamcdn-a.akamaihd.net/steamcommunity/public/images/avatars/09/09cea52b91136fb3306c57771a746db2823b91ba_medium.jpg",
                "avatarfull": "https://steamcdn-a.akamaihd.net/steamcommunity/public/images/avatars/09/09cea52b91136fb3306c57771a746db2823b91ba_full.jpg",
                "personastate": 0,
                "realname": "Josh",
                "primaryclanid": "103582791460168790",
                "timecreated": 1462086929,
                "personastateflags": 0,
                "loccountrycode": "AU",
                "locstatecode": "QLD"
            }
        ]

    }
}

Main method suggested to me:

public class Details
{
    public string personaname { get; set; }
}
private void GetSteamDetails()
{
    var data = Newtonsoft.Json.JsonConvert.DeserializeObject<Details>(SteamDetailsJson);
    SteamName = data.personaname;
}

This is placed before Page_Load(). I then call GetSteamDetails(); when I want to fetch the name.

回答1:

After my question being down voted, I decided to not give up on this problem. After extensive research, trial and error, and YouTube tutorials which are the most helpful IMO. I found that the data was containing a JSON array, and yes I will admit, I was confused with this, but the answer was to simply treat it like a C# array and add [1] to the end of players.

Details details = new Details();
public class Details
{
    public string avatar { get; set; }
    public string avatarmedium { get; set; }
    public string avatarfull { get; set; }
    public string realname { get; set; }
    public string personaname { get; set; }
    public string steamid { get; set; }
}

private void GetSteamDetails()
{
    var SteamDetails= JsonConvert.DeserializeObject<dynamic>(SteamDetailsJson);
    avatar = SteamDetails.response.players[1].avatar.ToString();
    personaname = SteamDetails.response.players[1].personaname.ToString();
}

回答2:

Based on the JSON string you provided, you should have the following C# classes to support it, or to deserialize the JSON object values into: I used this link to generate the classes.

public class Player
{
    public string steamid { get; set; }
    public int communityvisibilitystate { get; set; }
    public int profilestate { get; set; }
    public string personaname { get; set; }
    public int lastlogoff { get; set; }
    public int commentpermission { get; set; }
    public string profileurl { get; set; }
    public string avatar { get; set; }
    public string avatarmedium { get; set; }
    public string avatarfull { get; set; }
    public int personastate { get; set; }
    public string realname { get; set; }
    public string primaryclanid { get; set; }
    public int timecreated { get; set; }
    public int personastateflags { get; set; }
    public string loccountrycode { get; set; }
    public string locstatecode { get; set; }
}

public class Response
{
    public List<Player> players { get; set; }
}

public class RootObject
{
    public Response response { get; set; }
}

Then, using Newtonsoft.Json, you can deserialize the JSON object into your C# classes as follow:

JsonConvert.DeserializeObject<RootObject>("yourJsonString");

回答3:

You mention that Newtonsoft.Json already referenced in the project.

Use class to represent json data structure, then you can easy deserialize it.
You can use only properties you need in the class.

public class Player
{
    public string personaname { get; set; } 
}

var player = Newtonsoft.Json.JsonConvert.DeserializeObject<Player>(jsonString);

// use player.personaname

For updates question create classes which represent your data structure

public class Team
{
    public List<Player> players { get; set; } 
}

public class Response
{
    public Team response { get; set; } 
}

回答4:

You can use http://json2csharp.com/ to generate a class automatically from a JSON string.