CODEWITHSUNDEEP
c#mongodbmongodb-.net-drivermongodb-query
skywalker2909
skywalker2909

Reputation: 1686

How to retrieve values from an array in MongoDB using C#

Below in the code that retrieves the elements in the form of a BsonArray. I just want to fetch the numeric value from the array and use that value to calculate the sum.

var fields = "secondary.amount";
    foreach (var document in collection.FindAllAs<BsonDocument>().SetFields(fields))
    {
        foreach (string name in document.Names)
        {
            BsonElement element = document.GetElement(name);                  
            Console.WriteLine("{0}", element.Value);
        }
    }

I tried converting the bson element to an int64, int32, double and then use the numeric value for addition but i get a runtime error of not able to cast a bsonarray etc. Does anyone have any idea on how to go about this?

Upvotes: 0

Views: 4079

Answers (1)

skywalker2909
skywalker2909

Reputation: 1686

I figured out the solution, by making the following changes and it works now:

foreach (BsonDocument nestedDocument in Document["name"].AsBsonArray)
                        {
                            Total += Convert.ToDouble(nestedDocument["amount"]);
                        }

Upvotes: 1

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