Convert a Json string to C# class object [duplicate]

Question

I have a json string like {field:'DateToEnd',dir:'asc'}

And i have a class in c# with following two properties.

public class SortDescriptor
{
    public SortDescriptor()
    {
    }
    public string Field { get; set; }
    public string Dir { get; set; }
}

Now i want to convert this string to the class object so that i can access the properties.

I tried the following example. But it's not working for me.

JavaScriptSerializer serialize = new JavaScriptSerializer();
SortDescriptor sort = (SortDescriptor)serialize.DeserializeObject(fixSortString);

It gives following error:

Unable to cast object of type 'System.Collections.Generic.Dictionary`2[System.String,System.Object]' to type 'NF.Common.SortDescriptor'.

Can anyone let me know that how i can do this?

Use json.net from nuget (newtonsoft.json)

deeiip
– deeiip

2016-03-24 06:49:00 +00:00
Commented Mar 24, 2016 at 6:49 — deeiip
– deeiip, Commented Mar 24, 2016 at 6:49
serialize.Deserialize<SortDescriptor>(fixSortString);

Gene R
– Gene R

2016-03-24 06:53:11 +00:00
Commented Mar 24, 2016 at 6:53 — Gene R
– Gene R, Commented Mar 24, 2016 at 6:53
@JeremyThompson I have edited my question.

Code Rider
– Code Rider

2016-03-24 06:55:34 +00:00
Commented Mar 24, 2016 at 6:55 — Code Rider
– Code Rider, Commented Mar 24, 2016 at 6:55
@GeneR It works for me. Thanks.

Code Rider
– Code Rider

2016-03-24 06:58:35 +00:00
Commented Mar 24, 2016 at 6:58 — Code Rider
– Code Rider, Commented Mar 24, 2016 at 6:58
That's my 2nd answer

Jeremy Thompson
– Jeremy Thompson

2016-03-24 07:00:50 +00:00
Commented Mar 24, 2016 at 7:00 — Jeremy Thompson
– Jeremy Thompson, Commented Mar 24, 2016 at 7:00

Jeremy Thompson · Accepted Answer · 2016-03-24 06:52:47Z

0

I'm pretty sure DeserializeObject requires a type as a second parameter, eg

JavaScriptSerializer serialize = new JavaScriptSerializer();
SortDescriptor sort = (SortDescriptor)serialize.DeserializeObject(fixSortString, typeof(SortDescriptor));

Or using Generics:

JavaScriptSerializer serialize = new JavaScriptSerializer(); 
SortDescriptor sort = (SortDescriptor)serialize.DeserializeObject<SortDescriptor>(fixSortString);

answered Mar 24, 2016 at 6:52

Jeremy Thompson

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