Question

How do I deserialize following JSON string to an object?

{
    "ArrayOfResults": {
        "Results": [
            {
                "ErrorID": "0",
                "ErrorMessage": null,
                "MetroID": "281",
                "MetroName": "050908 add metor no dffd"
            },
            {
                "ErrorID": "0",
                "ErrorMessage": null,
                "MetroID": "284",
                "MetroName": "050908 added with dff"
            }
        ]
    }
}

Answer 1

What you have shown is invalid JSON. You will need to fix your JSON in order to hope to handle it with a JSON serializer:

{
    "ArrayOfResults": {
        "Results": [
            {
                "ErrorID": "0",
                "ErrorMessage": null,
                "MetroID": "281",
                "MetroName": "050908 add metor no dffd"
            },
            {
                "ErrorID": "0",
                "ErrorMessage": null,
                "MetroID": "284",
                "MetroName": "050908 added with dff"
            }
        ]
    }
}

Once you have fixed it you can use the JavaScriptSerializer class to deserialize it to strongly typed model that you define:

public class Item
{
    public int ErrorID { get; set; }
    public string ErrorMessage { get; set; }
    public int MetroID { get; set; }
    public string MetroName { get; set; }
}

public class ResultArray
{
    public Item[] Results { get; set; }
}

public class Result
{
    public ResultArray ArrayOfResults { get; set; }
}

class Program
{
    static void Main()
    {
        var json = @"{ ""ArrayOfResults"": { ""Results"": [ {""ErrorID"": ""0"", ""ErrorMessage"": null, ""MetroID"": ""281"", ""MetroName"": ""050908 add metor no dffd"" }, {""ErrorID"": ""0"", ""ErrorMessage"": null, ""MetroID"": ""284"", ""MetroName"": ""050908 added with dff"" }]}}";
        var serializer = new JavaScriptSerializer();
        var response = serializer.Deserialize<Result>(json);

        // TODO: do something with the response
    }
}