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for (var i = 0; i < postcodeArr.length; i++) {
            var pstcd = postcodeArr[i];
            if (i == 0)
                jsonstring = "{'PostalCode': '" + pstcd + "' ";
            else {
                jsonstring += "," + "'PostalCode': '" + pstcd + "' ";
        jsonstring += "}";
        //jsonstring = JSON.stringify(jsonstring);
        var arrGPDetails = [];
        var dataString = 'servicetype=GPPostcode&data=' + jsonstring;

GPDetails objGPpost = jSer.Deserialize<GPDetails>(data);

GPDetails properties are given below
public string PostalCode { get; set; }

What i required is i will get more than one postcodes in to objGPPost objects and i need to assign into Postalcode. But i am getting only one postal code. Multiple not getting assigned into PostalCode.

I tried putting public string PostalCode { get; set; }

However when i am doing so it throws an exception
ex = {"Cannot convert object of type 'System.String' to type 'System.String[]'"}

How to solve this issue.
Thanks in advance
Updated 17-Feb-14 21:53pm
Krunal Rohit 18-Feb-14 4:18am    
at which line are you getting exception ?
Trajan McGill 18-Feb-14 9:49am    
I'm not sure exactly what you're trying to accomplish, or what the GPDetails class or structure looks like, but I can tell you for one thing that the string you're putting in the jsonstring variable doesn't define an array. An array in Javascript looks like this:
"[1, 2, 3]".

You are building a string that looks like this:
"{'PostalCode':'12345', 'PostalCode':'23456', 'PostalCode':'34567'}"
and that is the definition of an object with the same property ("PostalCode") defined over and over again.

You may be intending to build a JSON string more like this:
"{'PostalCodes':['12345', '23456', '34567']}"
or possibly like this:
"{'PostalCodes':[{'PostalCode':'12345'}, {'PostalCode':'23456'}, {'PostalCode':'34567']}"
depending on what you're trying to do with the resulting array.

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