how to handle api response.

Pradeep Rawat

here "additionalInfo" field is "" blank basically its a array formate...but sometimes its coming "", how will handle this.

actual response formate is

"bill":{

"additionalInfo":[

{

"name": "Pena",

"value": "100.20"

}

"amount": "",

"billDate": "",

"billNumber": "",

"billPeriod": "",

"customerName": "Evelyn JADHV",

"dueDate": "2020-08-22"

but it comes like that from api

data": {

"bill": {

"additionalInfo": "",

"amount": "",

"billDate": "",

"billNumber": "",

"billPeriod": "",

"customerName": "",

"customerRefId": "01517476646",

"dueDate": ""

}

my classes

public class GetBillFatchedBilldata
{
public bill bill { get; set; }
}
public class bill
{
public List additionalInfo { get; set; }
public string amount { get; set; }
public string billDate { get; set; }
public string billNumber { get; set; }
public string billPeriod { get; set; }
public string customerName { get; set; }
public string customerRefId { get; set; }
public string dueDate { get; set; }
}
public class additional
{
public string name {get; set;}
public string value {get; set;}
}

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Pradeep Rawat5y ago
thankx sachin,,,i think it will work.. but i m little confused to modified your class into our class object.. can you please help
.
Sachin Singh5y ago
No if you are geting an array like a string then this is completely third party error, an array should always come as [] null and not as "";
it must be an array on api side , so talk to your vendor why is the response in string format.
"additionalInfo": [], // valid
"additionalInfo": "", // not valid
but on your side , for now you can handle this by modifying the property inside class as shown below
private object _additionalInfo;

        public string[] additionalInfo
        {
            get
            {
                if (_additionalInfo != null)
                {
                    if (_additionalInfo is string)
                    {
                        _additionalInfo = Enumerable.Empty();
                    }
                    else if (_additionalInfo is string[])
                    {
                       return  _additionalInfo as string[];
                    }
                }

                return _additionalInfo as string[];
            }
        }
Pradeep Rawat5y ago
when array is null then no problem when it is "" then this error its showing Cannot convert object of type 'System.String' to type 'System.Collections.Generic.List
Sachin Singh5y ago
create the classes as shown below then you will be able to handle the response correctly , note if array is null then it is not an issue it will be simply null on api.
// Root myDeserializedClass = JsonConvert.DeserializeObject(myJsonResponse);
    public class AdditionalInfo    {
        public string name { get; set; }
        public string value { get; set; }
    }

    public class Bill    {
        public List additionalInfo { get; set; }
        public string amount { get; set; }
        public string billDate { get; set; }
        public string billNumber { get; set; }
        public string billPeriod { get; set; }
        public string customerName { get; set; }
        public string dueDate { get; set; }
    }

    public class Root    {
        public Bill bill { get; set; }
    }
paas root as parameter in your api method
public IActionResult Save(Root root)
{
// save to database

}
send the following data from postman to api and you will successfully get the data.
data": {
"bill": {
"additionalInfo": [],
"amount": "",
"billDate": "",
"billNumber": "",
"billPeriod": "",
"customerName": "",
"customerRefId": "01517476646",
"dueDate": ""
},
}
Pradeep Rawat5y ago
actually api response is not our hand.. i am taking other party api. so i am getting frormat like below. my question is how to handle both scenario .

data": {
"bill": {
"additionalInfo": "",
"amount": "",
"billDate": "",
"billNumber": "",
"billPeriod": "",
"customerName": "",
"customerRefId": "01517476646",
"dueDate": ""
},
}

but some time the response is coming

data": {
"bill": {
"additionalInfo": [{
"name": "Penalty fees",
"value": "100.20"
}],
"amount": "",
"billDate": "",
"billNumber": "",
"billPeriod": "",
"customerName": "",
"customerRefId": "01517476646",
"dueDate": ""
},
}
Piyush Pansuriya5y ago
Hi,
Can you please share the code which is in API?
May be API side there should be a string property or somthing.
Otherwise It should return "additionalInfo": null or "additionalInfo": []