How to handle json object in codebehind

Question

I have - var JsonObj = []; and I pushed some data into that and send it to codebehind using JQuery.ajax() method. I am able to receive in a method which has parameter like this

[WebMethod]
public static void SaveInfo(List<Object> userEnteredDetails)
{
}

And i loop thru the collection to get the data something like this,

foreach (object item in userEnteredDetails)
{
Dictionary<string, object> details = item as  Dictionary<string, object>;

string name = details["customerName"] as string;
}

The problem here is, I am receiving more than 10 items in the collecton. So i cannot read another property in my above for loop. Something like this,

foreach (object item in userEnteredDetails)
{
Dictionary<string, object> details = item as  Dictionary<string, object>;

string name = details["customerName"] as string;
string city= details["city"] as string;
}

Firsttime city wil throw an error, and next time customername. Because item variable will have one variable at a time. How to read all the more than 10 records efficiently since we dont have property, but can read only through an indexer (details["customerName"]).

is there any particular reason why you are using object instead of a custom strong-typed DTO like Person, Employee etc? — Jupaol
– Jupaol, Commented Jul 12, 2012 at 10:55

Kapil Khandelwal · Accepted Answer · 2012-07-12 10:59:55Z

3

Try this:

string name = String.Empty;
string city = String.Empty;
foreach (object item in userEnteredDetails)
{
 Dictionary<string, object> details = item as  Dictionary<string, object>;
if (details.ContainsKey("customerName"))
 name = details["customerName"] as string;
if (details.ContainsKey("city"))
 city= details["city"] as string;
}

answered Jul 12, 2012 at 10:59

Kapil Khandelwal

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Comments

Tomas Grosup · Accepted Answer · 2012-07-12 11:06:10Z

2

You can enumerate the details Dictionary.

foreach(var kvp in details)
  {
// do something with kvp.Key and kvp.Value
  }

EDIT: To get a one merged details dictionairy first, you can try this:

var details = list.Select(item => item as Dictionary<string, object>).SelectMany(d => d).ToDictionary(kvp => kvp.Key, kvp => kvp.Value);

edited Jul 12, 2012 at 11:06

answered Jul 12, 2012 at 11:00

Tomas Grosup

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1 Comment

Tomas Grosup Over a year ago

If u want all of the data merged to one dictionairy, you can merge the individual items to a dictionairy first.

Vinoth · Accepted Answer · 2012-07-12 10:59:38Z

1

One thing you could have a type with fields in them mapping to the list of objects. While making the ajax call stringify the json object. In your web method recieve it as string. Use Json Deserializer and deserialize it to the type you have created.

answered Jul 12, 2012 at 10:59

Vinoth

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Comments

Christian Phillips · Accepted Answer · 2012-07-12 11:11:53Z

1

Theres a very flexible json framework (JSON.NET) which could help with this, definitley worth considering if your doing a lot of work with JSON http://json.codeplex.com/

answered Jul 12, 2012 at 11:11

Christian Phillips

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