How to check if dynamic array is empty?

Question

This is my code :

  var client = new FacebookClient(token);
 dynamic result = client.Get("search?q=tbilisi&type=user", new {  });

result.data is an array, how to determine if it's an empty array. For example what i'm trying to do :

 while (true)
 {
     if (result == null)
     {
         break;
     }
     if (result.data ==  null )
     {
         break;
     }

But not woks. When result.data = [] i want to check and break while loop.

Use result.count instead of .length maybe?

eikooc
– eikooc

2015-12-17 09:03:44 +00:00
Commented Dec 17, 2015 at 9:03 — eikooc
– eikooc, Commented Dec 17, 2015 at 9:03
Same error, it is json array object

Nika Javakhishvili
– Nika Javakhishvili

2015-12-17 09:04:41 +00:00
Commented Dec 17, 2015 at 9:04 — Nika Javakhishvili
– Nika Javakhishvili, Commented Dec 17, 2015 at 9:04
If you do know type of object why do you use dynamic ?

Fabjan
– Fabjan

2015-12-17 09:05:53 +00:00
Commented Dec 17, 2015 at 9:05 — Fabjan
– Fabjan, Commented Dec 17, 2015 at 9:05

Backs · Accepted Answer · 2015-12-17 09:06:30Z

9

var array = result.data as Facebook.JsonArray;
if (array == null || array.Count == 0)

edited Dec 17, 2015 at 9:06

answered Dec 17, 2015 at 9:00

Backs

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7 Comments

Nika Javakhishvili Over a year ago

It is dynmic object and doesn't have Length property

Nika Javakhishvili Over a year ago

Runtime error : 'Facebook.JsonArray' does not contain a definition for 'Length'

Backs Over a year ago

@NikaJavakhishvili so, you have JsonArray object

Nika Javakhishvili Over a year ago

Same error , it doesn't have any property, i think need to cast

Nika Javakhishvili Over a year ago

I've to use jsonserilizer, but can't figure out how

|

Alberto Monteiro · Accepted Answer · 2015-12-17 09:12:33Z

1

while (true)
{
     if (result == null)
     {
         break;
     }
     if (result.data ==  null || !result.data.Any())
     {
         break;
     }
}

answered Dec 17, 2015 at 9:12

Alberto Monteiro

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Comments

urvish patel · Accepted Answer · 2015-12-17 09:10:13Z

0

while (result.data.length >0) { your code here }

answered Dec 17, 2015 at 9:10

urvish patel

11 bronze badge

Comments

Tien Dang · Accepted Answer · 2021-11-26 05:00:21Z

0

This one works for me:

if (object == null || ((JArray)object).Count == 0) { // code }

answered Nov 26, 2021 at 5:00

Tien Dang

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