(C# UWP/WinRT) Demonstrates how to Handle Large Integers in JSON

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Demonstrates how to handle large integers in JSON. (Integers larger than what can fit in a 32-bit signed integer.)

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

// Let's say your JSON has this:

// {
// 	"id": 20000000001234567
// }

Chilkat.JsonObject json = new Chilkat.JsonObject();

bool success = json.LoadFile("qa_data/json/large_int.json");
if (success == false) {
    Debug.WriteLine(json.LastErrorText);
    return;
}

// The integer is too large for a 32-bit signed integer that is returned by IntOf.
// The result will be something that wrapped around and could be negative.
// In this case it would be: -543893881
int id = json.IntOf("id");
Debug.WriteLine("id: " + Convert.ToString(id));

// The solution is to read the integer value as a string, and then use the features in your programming language
// to convert from a string to a 64-bit integer.
// 
// Alternatively, you may wish to simply hold the value as a string.  If, for example, the integer simply references
// an order ID, an account ID, etc., then there's no need to convert to an integer value.  You're not going to be doing
// mathematical operations on it anyway.  This is usually the case for large integers -- they typically exist
// in JSON as an account ID.

// You can get any JSON value as a string:
string accountId = json.StringOf("id");
Debug.WriteLine("accountId: " + accountId);

// Sample output:

// id: -543893881
// accountId: 20000000001234567