How to convert a json string?

Question

Can't seem to get this working. I have this json string and I want to convert it to a C# object:

{"name":"mousePos","args":[{"mouseDet":{"rid":"1","posx":1277,"posy":275}}]}

I've been trying JavaScriptSerializer but I'm having no luck. I'm unsure how to get the values of posx and posy. Can anyone suggest how I would do this? Thanks for the help.

EDIT:

public class JsonData
{
    public string name { get; set; }
}
public Form1()
{
    // ---- Other stuff here ----

    string json = data.MessageText; // The json string.

    JavaScriptSerializer ser = new JavaScriptSerializer();
    JsonData foo = ser.Deserialize<JsonData>(json);


    MessageBox.Show(foo.name); // Shows 'mousePos'
}

Can you show us what you tried with JavaScriptSerializer? – Abe Miessler Jun 05 '12 at 21:55 — Abe Miessler, Jun 05 '12 at 21:55

Jason Kulatunga · Answer 1 · 2012-06-05T22:02:55.863

1

I dropped that into JsonLint and got an error. Its invalid JSON

{
    "name": "mousePos",
    "args": [
        "mouseDet": {
            "rid": "1",
            "posx": 1277,
            "posy": 275
        }
    }    //-- THIS should not be here.
]
}

edited Jun 05 '12 at 22:02

answered Jun 05 '12 at 21:56

Jason Kulatunga

5,814
1
26
50

Ah. Is this okay: {"name":"mousePos","args":[{"mouseDet":{"rid":"1","posx":1277,"posy":275}}]} – Joey Morani Jun 05 '12 at 21:59

score 0 · Answer 2 · answered Jun 05 '12 at 21:59

0

The reason the JSON is not valid is because your "args" property contains a key/value pair inside of square brackets, which is not a valid array. I'm guessing it should be something like:

{
    "name":"mousePos",
    "args":[{"mouseDet":{"rid":"1","posx":1277,"posy":275}}]
}

answered Jun 05 '12 at 21:59

Joe Enos

39,478
11
80
136

Yeah, sorry. That's it. Typo. :) – Joey Morani Jun 05 '12 at 22:01

score 0 · Accepted Answer · answered Jul 10 '12 at 23:34

You just need to extend out your object model a little bit to cover it. Based on what you've got in your example, it would be something like:

public class JsonData
{
    public string name { get; set; }
    public Arguments[] args { get; set; }
}

public class Arguments
{
    public MouseDet mouseDet { get; set; }
}

public class MouseDet
{
    public int rid { get; set; }
    public int posx { get; set; }
    public int posy { get; set; }
}

...

var posx = foo.args[0].mouseDet.posx;

How to convert a json string?

3 Answers3