Passing Array from Javascript to C#

Question

I have a .js script that contain an array:

The output of the js is like:

var foo=
[
    {
        "bar1":"value1",
        "bar2":"value2"
        // And so on...            
    }
]

I have no access to the js source, so i cannot output as JSON and Deserialize.

I can only get this as a String using WebClient, but how i can parse it and create an Array/Dictionary and work on it inside C#?

I believe you can do this : var foo = new JavaScriptSerializer().Deserialize<List<YourModelHere>>(YourString); — Hugo Hilário
– Hugo Hilário, Commented Sep 6, 2013 at 21:05
What is the string you get with WebClient? Because you ask how to parse it but don't show it. — I4V
– I4V, Commented Sep 6, 2013 at 21:08
@I4V The string is the output of the js. Exactly like i wrote. — Fr0z3n
– Fr0z3n, Commented Sep 6, 2013 at 21:19
@WiS3 does the string start with "var foo = " or is that how it's set in the JavaScript? — D Stanley
– D Stanley, Commented Sep 6, 2013 at 21:38
@DStanley The string starts with "var foo...", it is plain text, like reading a .txt. — Fr0z3n
– Fr0z3n, Commented Sep 6, 2013 at 21:46

user240141 · Accepted Answer · 2013-09-06 20:59:28Z

1

You should consider calling WebClient.DownloadString . Then Parse using JSON.Net or whatever

As per the example provided over there

string json = @"{
  ""Name"": ""Apple"",
  ""Expiry"": "2008-12-28T00:00:00",
  ""Price"": 3.99,
  ""Sizes"": [
    ""Small"",
    ""Medium"",
    ""Large""
  ]

}";
JObject o = JObject.Parse(json);
string name = (string)o["Name"];
// Apple
JArray sizes = (JArray)o["Sizes"];
string smallest = (string)sizes[0];

// Small

answered Sep 6, 2013 at 20:59

user240141

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Comments

Hugo Hilário · Accepted Answer · 2013-09-06 21:04:10Z

0

var foo = new JavaScriptSerializer().Deserialize<List<YourModelHere>>(YourString);

answered Sep 6, 2013 at 21:04

Hugo Hilário

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Comments

D Stanley · Accepted Answer · 2013-09-06 21:56:14Z

0

You can use a JavaScriptSerializer to deserialize that string:

string str=
@"var foo = 
  [
    {
        ""bar1"":""value1"",
        ""bar2"":""value2""

    }
]";

JavaScriptSerializer js = new JavaScriptSerializer();
var o = js.Deserialize<Dictionary<string,string>[]>(str.Substring(str.IndexOf('[')));

Result:

Dictionary<String,String> (2 items)   

Key    Value 
------ --------
bar1   value1 
bar2   value2

edited Sep 6, 2013 at 21:56

answered Sep 6, 2013 at 21:08

D Stanley

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3 Comments

I4V Over a year ago

D Stanley, I expected this answer:) But javascript can not be parsed with json parsers. Suppose a line like "bar3": Math.max(a,b)

D Stanley Over a year ago

@I4V The example provided does not have embedded code - I have tested my answer with the provided example and it works.

I4V Over a year ago

D Stanley, I know it works, I just say, OP is trying to do something wrong and your answer works for the posted example (A very primiteve string op. to be able to pass it to json parser). What do you think for this? I have a .js script that contain an array:. Do you expect your answer would work for every js that contains an array?

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