MiniJSON loop condition

Scripting
1

Hello !

I am using the Facebook MiniJSON feature to loop inside a JSON from the Graph API provided by Facebook.

Everything worked fine until now (I managed to get all the JSON infos, put it in a list so I can extract each entry independently by turning them to strings, etc…).

BUT : sometimes some entries are missing (for exemple, when I look into the Feed to get all the posts from a user, some posts don’t have a “message” key. So, my loop stops when there is no key, and I can’t access the next keys.

SO, I would like to know if there is a way to put a condition on it : “when there is no such key, ignore it and go to the next entry”.

I hope you will understand what I’m trying to do… Here is my code (in C#) :

void FBFeedInfos(FBResult result)
    {
        var JSONresult = Json.Deserialize(result.Text) as Dictionary<string, object>;
        object info;
        var feedList = new List<object>();
      
        Debug.Log("FEED : " + result.Text);
      
        if(JSONresult.TryGetValue ("feed", out info))
        {
            feedList = (List<object>)(((Dictionary<string, object>)info) ["data"]);
          
            if(feedList.Count > 0)
            {
                for (int i = 0; i < feedList.Count; i++)
                {
                    // Get the input "message" for each entry
                    string message = System.Convert.ToString(((Dictionary<string, object>)feedList[i])["message"]);
                  
                    Debug.Log(message);

                    // Put text result on the UI
                    GameObject FeedPanel;
                    FeedPanel = Instantiate (FeedEntry) as GameObject;
                    FeedPanel.transform.SetParent(FeedScrollList.transform);
                  
                    Transform ThisFeedMessage = FeedPanel.transform.Find ("FeedMessage");
                  
                    Text FeedMessage = ThisFeedMessage.GetComponent<Text>();
                  
                    FeedMessage.text = message;
                }
            }
            else
            {
                Debug.Log("Failed to get feed!");
            }
        }

So I get the data on the Feed, with the “message” key. But when there is no such key, I got an error on line 18 : “KeyNotFoundException: The given key was not present in the dictionary”.

I really hope you will be able to help me with that.

Thank you in advance !

EDIT : Just FYI, the “result” is a JSON string that I get when I call the Facebook Graph API.

2

If you’re still having an issue with this: Dictionary has a ContainsKey method, so you can check it exists before attempting to pull the value.