How to Construct a JSON Object for an AJAX Web Service Request?

How to Construct a JSON Object for an AJAX WebService Request

To address the issue of sending a valid JSON object to an AJAX WebService, let's examine the requirements of the web service and its method.

The web service method ValidateAddress expects a Request object as its parameter. The Request class contains an Address instance as a property. The Address class has several string and object properties, including:

public class Address
{
    public string Address1;
    public string Address2;
    public string City;
    public string State;
    public string Zip;
    public AddressClassification AddressClassification;
}

To build a properly formatted JSON object, we need to match this class structure. Using native JavaScript objects, we can construct the JSON object as follows:

var myData = {
    Address: {
        Address1: "123 Main Street",
        Address2: "Suite 20",
        City: "New York",
        State: "NY",
        Zip: "10000",
        AddressClassification: {
            Code: 123,
            Description: "bla bla"
        }
    }
};

This object contains all the properties and values required by the web service method.

To use this object in an AJAX request, we need to JSON-encode it and pass it as the data parameter. Using jQuery, we would modify the data property as follows:

data: {request:$.toJSON(myData)}

Alternatively, we can use JSON.stringify from JSON.org:

data: {request:JSON.stringify(myData)}

By following these steps, we can ensure that the JSON object we send to the web service is properly formatted and meets the requirements of the method.

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