I have the following JSON:
{
"reviews": [
{
"reviewId": "123",
"authorName": "author",
"comments": [
{
"userComment": {
"text": "text",
"lastModified": {
"seconds": "1580461776",
"nanos": 1
},
"starRating": 5,
"reviewerLanguage": "GB",
"appVersionCode": "",
"appVersionName": "",
"thumbsUpCount": 0,
"thumbsDownCount": 0
}
}
]
}
]
}
From this all I want to access is the starRating (but with the potential for multiple reviews) I have managed to deserialize the JSON into a C# object correctly and have checked this when debugging my code.
So far I have:
var appReview = JsonConvert.DeserializeObject<appData>(appJson);
var reviews = appReview.Reviews;
int reviewCount = reviews.Length;
for (int i = 0; i < reviewCount; i++)
{
Console.WriteLine(reviews[0].Comments[0].UserComment.StarRating);
}
However I don't just want the star rating of this specific review as in the future there will be more reviews and star ratings, therefore I need to select all of the reviews in the JSON and get an average of the star rating? Because of that, I'm not sure accessing them with the [0] index is correct. Hopefully I have explained that well enough - can anyone please point me in the correct direction?
If you are comfortable using linq then I would suggest something like this:
var ratings = appReview.Reviews
.SelectMany(r => r.Comments.Select(c => c.UserComment.StarRating));
This should get you a list of ratings. This works by selecting the StarRating from the Comments then SelectMany flattens the arrays to a single array.
Then you can use get the average like so:
var average = ratings.Average();